US3649985A - Disposable rotary brush core and filament assembly for power sweepers - Google Patents

Disposable rotary brush core and filament assembly for power sweepers Download PDF

Info

Publication number
US3649985A
US3649985A US837052A US3649985DA US3649985A US 3649985 A US3649985 A US 3649985A US 837052 A US837052 A US 837052A US 3649985D A US3649985D A US 3649985DA US 3649985 A US3649985 A US 3649985A
Authority
US
United States
Prior art keywords
core
shaft
coupling
drive shaft
rubberlike
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US837052A
Inventor
Frederick B Hunt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3649985A publication Critical patent/US3649985A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B13/00Brushes with driven brush bodies or carriers
    • A46B13/001Cylindrical or annular brush bodies

Definitions

  • the present invention is directed to new and useful improvements in rotary brooms of the type used in street sweepers.
  • rotary brooms of this type have usually been of a spiral channel type or a type in which a plurality of circular wafer-like filament assemblies consisting of circular supports with filaments held thereon are slipped over a supporting core in the broom.
  • the spiral wound type may be of a type in which a spiral groove is machined in the core or a type wherein a separate channel is wound about a core with filaments held in the channel by means of a cord positioned in the channel and/or by means of clamping pressure from the sides of the channel.
  • a spiral channel and filament assembly is removably fitted over a core.
  • both classes of such brooms it has been customary to provide special driving attachments on the core itself.
  • the drive shaft for the broom is formed integrally with the core.
  • the cost of replacing a worn brush is usually more expensive than is the case where the drive shaft is removable from the brush core and filament assembly.
  • the attaching facilities are relatively expensive and cumbersome.
  • the waferlike brush constructions which are removably fitted on a core are relatively expensive and require a relatively large amount of time for removal from and replacement on a core.
  • the principal purposes of the present invention are to form a brush filament assembly on a cylindrical core without any special drive attaching facilities on the core and in such a manner that the replacement channel and filament assembly is in the normal operating position when received by the purchaser thereof so that the purchaser may quickly and easily remove a similarly formed unit from his sweeping machine and replace it with a new filament and core assembly.
  • a related purpose of the invention is to provide simple and effective means to enable a quick attachment of and detachment of a replaceable filament assembly with drive shaft means of a street sweeping machine.
  • Another related purpose of the invention is to provide a rotary broom in which the cost of material, time and labor in replacing worn-out filaments is less than in prior machines.
  • FIG. 1 is a diagrammatic view of a broom of a power sweeping machine incorporating the principles of the present inventron;
  • FIG. 3 is another diagrammatic view of a broom as shown in FIG. 1 but illustrating a different driving and supporting means for the broom;
  • FIG. 4 is a sectional view of the broom or brush core together with a new and improved coupling for coupling the broom drive shaft to the brush core;
  • FIG. 5 is a view of the same elements shown in FIG. 4 while illustrating a different operative condition of the elements
  • FIG. 6 is a sectional view of a modified form of coupling between the drive shaft and the brush core
  • FIG. 7 is a sectional view of the brush core, coupling and drive shaft shown in FIG. 6 but illustrating a different operative position of the elements illustrated in FIG. 6;
  • FIG. 9 is a diagrammatic sectional view of a broom using the couplings of FIGS. 6 and 7.
  • the numeral 10 designates a brush or broom core having brush filaments 11 fixed thereto and extending radially outwardly therefrom.
  • the filaments 11 as illustrated in FIG. 1 and as used in the invention may be fixed to the core through use of a spiral channel wound about the core and with a cord holding portions of the filaments within the channel and/or with the channel clamping the filaments, Both in a manner known to the art.
  • a channel may be machined in the exterior surface of the core while using a holding cord to hold the filaments in the channel in a manner known to the art.
  • the filaments may also be positioned on the core through use of a plurality of waferlike" filaments and supports positioned side by side on the core.
  • relatively short supporting sleeves each carry brush filaments extending radially outwardly therefrom and a plurality of the wafer-like" brush elements are positioned side by side along the length of the core 11.
  • the core 10 is hollow and generally cylindrical in form.
  • the core may be made from steel, wood, plastic or may be fabricated from a plurality of spirally wound laminations of paper which are bonded together.
  • the core 10 must be such as to provide a substantially smooth inner surface from one end of the core to the other end 10b, while providing approximately the same crosssectional area from one end to the other. While the inner surface is smooth, it should be understood that the material of the core should provide good friction with materials such as rubber and resilient polyurethane plastics.
  • the material used for the core 10 should be sufficiently rigid as to maintain its concentricity and cylindrical shape during subsequent sweeping operations in power sweepers or brooms.
  • the core may be approximately eight inches in internal diameter, approximately one-half inch thick and approximately five feet long.
  • the core may be formed with other lengths, thicknesses and diameters.
  • a drive shaft 12 extends through the hollow interior of the core and is fixed to the core through use of spaced couplings l3 and 14 which will be described hereinafter.
  • Brooms or brushes as thus described are customarily used with power sweepers of the type having movable or stationary supporting arms for the drive shaft 12 as illustrated in the alternative drive systems shown in FIGS. 2 and 3.
  • a typical power sweeper is a street sweeping machine.
  • the drive shaft 12 is shown as hollow and is provided with flanges 15 and 16 on the opposite ends thereof.
  • the drive shaft may be solid.
  • the broom supporting arms 17 and 18 may be pivotally mounted on the frame of power sweeping machines so as to enable lowering of the broom to an operative position and raising the broom to an inoperative position in a manner known to the art. In some power sweepers, the supporting arms 17 and 18 may be fixed in the operative position.
  • the broom supporting arms carry machine stub shafts 19 and 20 which can be coupled with the end flanges 15 and 16 of the drive shaft 12.
  • the stub shafts are rotatably mounted in the bearings 19a and 20a which are carried by the arms 17 and 18.
  • One stub shaft, as for example stub shaft 19, may carry a drive sprocket which is keyed on stub shaft 19 and driven through a chain or belt drive 21 from a suitable prime mover on the machine.
  • FIG. 3 illustrates another driving arrangement in which the broom or brush supporting arms 17 and 18 carry bearings 21 and 22 in which the drive shaft 12 is removably journale d.
  • a drive sprocket 23 is keyed to the main drive shaft 12 and driven from the prime mover of the machine.
  • the sprockets may be inside or outside of the supporting arms.
  • the brush core with the assembled brush filaments thereon is removably fixed to the drive shaft through use of couplings as illustrated in FIGS. 4-7.
  • a first generally circular clamping plate 23 is positioned around and fixed to the drive shaft as by means of welding or the like.
  • a movable clamping plate 24 surrounds the drive shaft 12 and a disc of rubber or rubberlike material 25 is positioned between the two plates 23 and 24.
  • Disc 24 also surrounds the shaft.
  • the disc 25 may be formed from resilient natural rubber or synthetic types of neoprene or polyurethane plastic, possessing good memory characteristics.
  • TI-Ie fixed plate 23, movable plate 24, and rubber element 25 have normal diameters providing a clearance with the internal cylindrical surface of the brush core 10. This diametral clearance may be on the order of 1/8 to l/IOOO inch so that the brush core is easily slipped over these elements.
  • the inner diameter of the fixed plate 23 should be such that it makes a rather snug fit with the drive shaft 12.
  • the inner diameter of the rubber disc 25 preferably should also be such that it makes a relatively snug fit with the external surface of the drive shaft 12, although a small clearance such as several thousandths of an inch may be used between the disc 25 and shaft 12.
  • the internal diameter of the movable plate 24 may be such as to provide a clearance space of approximately N16 to H100 of an inch between the plate 24 and the external diameter of the shaft 12. Greater and lesser clearances may be used.
  • the stationary plate While it is preferable to fix the stationary plate to the drive shaft 12, in some cases it may be advantageous to mount the plate 23 for sliding movement along drive shaft 12 while precluding rotation thereon through use of a key or keyway.
  • the particular formation of the core enables selective positioning of the coupling elements at various positions along the drive shaft. This latter type of arrangement may be advantageous in circumstances wherein different lengths of brush core assemblies are desired for use on the same drive shaft. After adjustment of the coupling assemblies at a particular position by sliding movement along the shaft,'the position lar shoulder 28 which abuts against the end of the brush core 10. A similar abutting fixed plate is used at each end of the assembly.
  • the fixed plate 27 may be fixed to the drive shaft 12 as by welding or the like, or may be mounted for a slidable adjustment along the length of the drive shaft 12.
  • tightening of the bolts 26 serves to cause the rubberlike element to flow outwardly into a tight frictional driving engagement with the inner surface of the core 10.
  • the form of the invention illustrated in FIGS. 6 and 7 may be used with the form illustrated in FIGS. 4 and 5 with a coupling of FIGS. 6 and 7 at one end of the core and a coupling of FIGS. 4 and 5 at the other end to permit endwise removal and replacement of the brush core over the couplings.
  • a coupling as illustrated in FIGS. 6 and 7 may be used at each end of the core if the couplings are removably fixed to the drive shaft to permit removal and replacement of the core.
  • a worn brush unit is easily replaced simply by loosening the coupling elements whereby the memory of the rubber will cause it to return toward its normal condition (providingclearance between it and the internal surface of the core) whereupon the worn assembled core and filaments are removed from the shaft and couplings by a simple endwise sliding movement.
  • a new disposable core and filament unit may then be inserted endwise over the couplings and fixed in position.
  • the invention makes use of disposable filament and core assemblies practical and economical.
  • the brush core when removed may, if desired, be provided with new filaments as, for example, by removing the filament holding facilities from the core and then adding new filament holding facilities and filaments to the core whereupon the core and filament assembly is ready for reuse in the sweeping machine.
  • a core maybe provided with new filaments in the case of a spiral channel filament holding assembly as described in US. Pat. to George B. Hunt, No. 3,343,884, by removing the old channel and filaments from the core and thereafter winding a new channel and group of filament on the core. 7
  • a heavy duty replaceable rotary brush and drive assembly for power street sweeping machines and the like including an elongated, hollow, rigid, cylindrical core, said core having a substantially smooth inner surface from end to end thereof and providing an unobstructed passageway of approximately the same cross-sectional area from end to end of the core, filament holding means on the exterior surface of the core, brush filaments carried by said means and extending outwardly from the core, a drive shaft positioned within said core and extending from one end of said core to the other, said drive shaft carrying means providing a connection with a power source and means providing a connection for supporting arms of a power sweeping machine, and spaced couplings carried by said shaft within said core for fixing core to said drive shaft for rotation therewith, each coupling including expansible rubberlike elements extending around said shaft and platelike elements embracing each rubberlike element, each coupling having means for moving said platelike elements toward one another to cause said rubberlike elements to bulge outwardly and grip the internal wall of said core in a frictional driving engagement, each rubberlike element having a

Abstract

A disposable cylindrical brush assembly for use in power sweeping machines such as street sweepers. The cylindrical brush is attached to a drive shaft for the machine through use of expansible elastic coupling elements which are carried by the drive shaft and which frictionally engage the inner surface of a cylindrical core which carries the brush filaments.

Description

United States Patent Hunt 1 Mar. 21, 1972 54] DISPOSABLE ROTARY BRUSH CORE 3,097,022 7/1963 Serentz ..29/11'/ x AND FILAMENT ASSEMBLY FOR 3,533,?33 3419?; Adams ....l5/l82 34 3 19 Swanson et al. ....15/182 X POWER SWEEPERS 3,195,159 7/1965 Enchelmaier et a1. ..15/ 179 X [72] Inventor: Frederick B. Hunt, 2559 Pasadena Boulevard wauwatosa, 53226 FOREIGN PATENTS OR APPLICATIONS Filed: June 27 Great Britain ..l5/l [21] Appl. No.: 837,052 Primary Examiner-Peter Feldrnan Attorney-Mann, Brown & McWilliams [52] U.S. Cl "115/179, 29/117 [57] ABSTRACT [51] Int. Cl. ..A46b 1/00 58 Field of Search ..1s 179-1s3; A disposable cylindrical brush assembly for use in P 29/117 sweeping machines such as street sweepers. The cylindrical I brush is attached to a drive shaft for the machine through use [56] Reerences cited of expansible elastic coupling elements which are carried by the drive shaft and which frictionally engage the inner surface of a cylindrical core which carries the brush filaments.
4 Claims, 9 Drawing Figures PATENTEDHARZI I972 3,649,985
sum 3 [1F 3'- Jkvezz 5'02" DISPOSABLE ROTARY BRUSH CORE AND FILAMENT ASSEMBLY FOR POWER SWEEPERS The present invention is directed to new and useful improvements in rotary brooms of the type used in street sweepers.
In the past rotary brooms of this type have usually been of a spiral channel type or a type in which a plurality of circular wafer-like filament assemblies consisting of circular supports with filaments held thereon are slipped over a supporting core in the broom. The spiral wound type may be of a type in which a spiral groove is machined in the core or a type wherein a separate channel is wound about a core with filaments held in the channel by means of a cord positioned in the channel and/or by means of clamping pressure from the sides of the channel. In some spiral wound brushes, a spiral channel and filament assembly is removably fitted over a core. In both classes of such brooms it has been customary to provide special driving attachments on the core itself. Sometimes the drive shaft for the broom is formed integrally with the core. When the drive shaft is formed integrally with the brush core, the cost of replacing a worn brush is usually more expensive than is the case where the drive shaft is removable from the brush core and filament assembly. In the case of brush cores which are removable from the drive shaft, the attaching facilities are relatively expensive and cumbersome. The waferlike brush constructions which are removably fitted on a core are relatively expensive and require a relatively large amount of time for removal from and replacement on a core.
With the foregoing in mind, the principal purposes of the present invention are to form a brush filament assembly on a cylindrical core without any special drive attaching facilities on the core and in such a manner that the replacement channel and filament assembly is in the normal operating position when received by the purchaser thereof so that the purchaser may quickly and easily remove a similarly formed unit from his sweeping machine and replace it with a new filament and core assembly. A related purpose of the invention is to provide simple and effective means to enable a quick attachment of and detachment of a replaceable filament assembly with drive shaft means of a street sweeping machine. Another related purpose of the invention is to provide a rotary broom in which the cost of material, time and labor in replacing worn-out filaments is less than in prior machines. These and other purposes of the invention will become more apparent in the course of the ensuing specification and claims when taken with the accompanying drawings, in which:
FIG. 1 is a diagrammatic view of a broom of a power sweeping machine incorporating the principles of the present inventron;
FIG. 2 is another diagrammatic view of the broom shown in FIG. 1 while illustrating machine driving and supporting means for the broom;
FIG. 3 is another diagrammatic view of a broom as shown in FIG. 1 but illustrating a different driving and supporting means for the broom;
FIG. 4 is a sectional view of the broom or brush core together with a new and improved coupling for coupling the broom drive shaft to the brush core;
FIG. 5 is a view of the same elements shown in FIG. 4 while illustrating a different operative condition of the elements;
FIG. 6 is a sectional view of a modified form of coupling between the drive shaft and the brush core;
FIG. 7 is a sectional view of the brush core, coupling and drive shaft shown in FIG. 6 but illustrating a different operative position of the elements illustrated in FIG. 6;
FIG. 8 is a perspective view illustrating the method of assembling brooms or brushes formed in accordance with the present invention with the couplings and drive shaft herein illustrated; and
FIG. 9 is a diagrammatic sectional view of a broom using the couplings of FIGS. 6 and 7.
Like elements are designated by like characters throughout the specification and drawings.
With specific reference to the drawings, and in the first instance to FIG. 1, the numeral 10 designates a brush or broom core having brush filaments 11 fixed thereto and extending radially outwardly therefrom. The filaments 11 as illustrated in FIG. 1 and as used in the invention may be fixed to the core through use of a spiral channel wound about the core and with a cord holding portions of the filaments within the channel and/or with the channel clamping the filaments, Both in a manner known to the art. In lieu of a separate channel member, a channel may be machined in the exterior surface of the core while using a holding cord to hold the filaments in the channel in a manner known to the art. The filaments may also be positioned on the core through use of a plurality of waferlike" filaments and supports positioned side by side on the core. In this latter case, relatively short supporting sleeves each carry brush filaments extending radially outwardly therefrom and a plurality of the wafer-like" brush elements are positioned side by side along the length of the core 11.
In accordance with the invention, the core 10 is hollow and generally cylindrical in form. The core may be made from steel, wood, plastic or may be fabricated from a plurality of spirally wound laminations of paper which are bonded together. The core 10 must be such as to provide a substantially smooth inner surface from one end of the core to the other end 10b, while providing approximately the same crosssectional area from one end to the other. While the inner surface is smooth, it should be understood that the material of the core should provide good friction with materials such as rubber and resilient polyurethane plastics. The material used for the core 10 should be sufficiently rigid as to maintain its concentricity and cylindrical shape during subsequent sweeping operations in power sweepers or brooms. In one example, the core may be approximately eight inches in internal diameter, approximately one-half inch thick and approximately five feet long. The core may be formed with other lengths, thicknesses and diameters.
A drive shaft 12 extends through the hollow interior of the core and is fixed to the core through use of spaced couplings l3 and 14 which will be described hereinafter.
Brooms or brushes as thus described are customarily used with power sweepers of the type having movable or stationary supporting arms for the drive shaft 12 as illustrated in the alternative drive systems shown in FIGS. 2 and 3. A typical power sweeper is a street sweeping machine. In FIG. 2, for example, the drive shaft 12 is shown as hollow and is provided with flanges 15 and 16 on the opposite ends thereof. The drive shaft may be solid. The broom supporting arms 17 and 18 may be pivotally mounted on the frame of power sweeping machines so as to enable lowering of the broom to an operative position and raising the broom to an inoperative position in a manner known to the art. In some power sweepers, the supporting arms 17 and 18 may be fixed in the operative position. The broom supporting arms carry machine stub shafts 19 and 20 which can be coupled with the end flanges 15 and 16 of the drive shaft 12. The stub shafts are rotatably mounted in the bearings 19a and 20a which are carried by the arms 17 and 18. One stub shaft, as for example stub shaft 19, may carry a drive sprocket which is keyed on stub shaft 19 and driven through a chain or belt drive 21 from a suitable prime mover on the machine. FIG. 3 illustrates another driving arrangement in which the broom or brush supporting arms 17 and 18 carry bearings 21 and 22 in which the drive shaft 12 is removably journale d. In the arrangement of FIG. 2, a drive sprocket 23 is keyed to the main drive shaft 12 and driven from the prime mover of the machine. In both FIGS. 2 and 3 the sprockets may be inside or outside of the supporting arms.
It should be understood that the invention described herein is applicable to a number of different drive shaft supporting and driving means. The two different supporting arm and drive arrangements in FIGS. 2 and 3 should be taken as illustrative of brush shaft supporting and driving means known to the art to which the present invention may be applied.
In accordance with the invention, the brush core with the assembled brush filaments thereon is removably fixed to the drive shaft through use of couplings as illustrated in FIGS. 4-7. In FIG. 4, for example, a first generally circular clamping plate 23 is positioned around and fixed to the drive shaft as by means of welding or the like. A movable clamping plate 24 surrounds the drive shaft 12 and a disc of rubber or rubberlike material 25 is positioned between the two plates 23 and 24. Disc 24 also surrounds the shaft. The disc 25 may be formed from resilient natural rubber or synthetic types of neoprene or polyurethane plastic, possessing good memory characteristics.
TI-Ie fixed plate 23, movable plate 24, and rubber element 25 have normal diameters providing a clearance with the internal cylindrical surface of the brush core 10. This diametral clearance may be on the order of 1/8 to l/IOOO inch so that the brush core is easily slipped over these elements. The inner diameter of the fixed plate 23 should be such that it makes a rather snug fit with the drive shaft 12. The inner diameter of the rubber disc 25 preferably should also be such that it makes a relatively snug fit with the external surface of the drive shaft 12, although a small clearance such as several thousandths of an inch may be used between the disc 25 and shaft 12. The internal diameter of the movable plate 24 may be such as to provide a clearance space of approximately N16 to H100 of an inch between the plate 24 and the external diameter of the shaft 12. Greater and lesser clearances may be used.
The plates 23 and 24 together with the rubber element 25 are held in an assembled position by bolts 26 which are passed through the stationary plate 23 and threaded into the movable plate 24. A plurality of these bolts 26 are equally spaced around the shaft. Tightening of the bolts causes the movable plate 24 to move towards the stationary plate 23 and cause the rubber disc 25 to flow outwardly into a tight binding frictional engagement with the inner surface of the core. This compressive force exerted by the plates 23 and 24 also causes the rubberlike element 25 to press inwardly against the external surface of the drive shaft 12. The inward and outward flow tendency of the rubber tends to insure concentricity of the brush core with respect to the axis of the drive shaft 12 because the pressure exerted on the rubber disc develops radial forces within this element acting both inwardly and outwardly with respect to the axis of the drive shaft. If the clearance between shaft 12 and disc 25 is such that 'the disc 25 does not contact shaft 12 in the expanded or distorted condition of disc 25, concentricity is then established from the fixed position of the bolts 26. Such a structure can be used with the removable brush cores described herein, but it is preferred to use a close fit between the shaft and disc to provide the radial forces against the shaft. It should be understood that both couplings 4 I3 and 14 are formed in a manner identical to the coupling illustrated in FIGS. 4 and 5.
The rubberlike disc 25 may be made in one piece. To facilitate removal and replacement of the disc, the disc may be made in identical half sections or have a radial slit therein so that it may be removed without endwise movement over the shaft.
While it is preferable to fix the stationary plate to the drive shaft 12, in some cases it may be advantageous to mount the plate 23 for sliding movement along drive shaft 12 while precluding rotation thereon through use of a key or keyway. The particular formation of the core enables selective positioning of the coupling elements at various positions along the drive shaft. This latter type of arrangement may be advantageous in circumstances wherein different lengths of brush core assemblies are desired for use on the same drive shaft. After adjustment of the coupling assemblies at a particular position by sliding movement along the shaft,'the position lar shoulder 28 which abuts against the end of the brush core 10. A similar abutting fixed plate is used at each end of the assembly. Again, the fixed plate 27 may be fixed to the drive shaft 12 as by welding or the like, or may be mounted for a slidable adjustment along the length of the drive shaft 12. In FIGS. 6 and 7 tightening of the bolts 26 serves to cause the rubberlike element to flow outwardly into a tight frictional driving engagement with the inner surface of the core 10. The form of the invention illustrated in FIGS. 6 and 7 may be used with the form illustrated in FIGS. 4 and 5 with a coupling of FIGS. 6 and 7 at one end of the core and a coupling of FIGS. 4 and 5 at the other end to permit endwise removal and replacement of the brush core over the couplings. A coupling as illustrated in FIGS. 6 and 7 may be used at each end of the core if the couplings are removably fixed to the drive shaft to permit removal and replacement of the core.
In each form of the invention use is made of a brush element in the form of a cylindrical core with brush filaments mounted thereon in a normal operative position. The assembled core and filaments are easily placed into a power machine simply by sliding the core over the coupling elements as diagrammatically indicated in FIG. 8, whereupon the bolts 26 are tightened to bring about the driving engagement between the shaft 12 and the core 10. If the couplings are slidably mounted on the shaft and one or more is removable from the shaft, the coupling or couplings may be removed from the shaft before the core is removed. Then a new core unit is placed over the shaft and the removable coupling or couplings are placed in their normal operative positions. A worn brush unit is easily replaced simply by loosening the coupling elements whereby the memory of the rubber will cause it to return toward its normal condition (providingclearance between it and the internal surface of the core) whereupon the worn assembled core and filaments are removed from the shaft and couplings by a simple endwise sliding movement. A new disposable core and filament unit may then be inserted endwise over the couplings and fixed in position.
The invention makes use of disposable filament and core assemblies practical and economical.
The brush core when removedmay, if desired, be provided with new filaments as, for example, by removing the filament holding facilities from the core and then adding new filament holding facilities and filaments to the core whereupon the core and filament assembly is ready for reuse in the sweeping machine. A core maybe provided with new filaments in the case of a spiral channel filament holding assembly as described in US. Pat. to George B. Hunt, No. 3,343,884, by removing the old channel and filaments from the core and thereafter winding a new channel and group of filament on the core. 7
In each form of the invention, the'inner cylindrical, frictional surface of the brush core is the sole drive shaft attaching facility on the core.
I claim:
1. A heavy duty replaceable rotarybrush and drive assembly for power street sweeping machines and the like including an elongated, hollow, rigid, cylindrical core, said core having a substantially smooth inner surface from end to end thereof and providing an unobstructed passageway of approximately the same cross-sectional area from end to end of the core, filament holding means on the exterior surface of the core, brush filaments carried by said means and extending outwardly from the core, a drive shaft positioned within said core and extending from one end of said core to the other, said drive shaft carrying means providing a connection with a power source and means providing a connection for supporting arms of a power sweeping machine, and spaced couplings carried by said shaft within said core for fixing said core to said drive shaft for rotation therewith, each coupling including expansible rubberlike elements extending around said shaft and platelike elements embracing each rubberlike element, each coupling having means for moving said platelike elements toward one another to cause said rubberlike elements to bulge outwardly and grip the internal wall of said core in a frictional driving engagement, each coupling including means for holding it on said shaft for rotation therewith, one platelike element of each coupling having an outer annular portion engaging one end face of said core.
2. A heavy duty replaceable rotary brush and drive assembly for power street sweeping machines and the like including an elongated, hollow, rigid, cylindrical core, said core having a substantially smooth inner surface from end to end thereof and providing an unobstructed passageway of approximately the same cross-sectional area from end to end of the core, filament holding means on the exterior surface of the core, brush filaments carried by said means and extending outwardly from the core, a drive shaft positioned within said core and extending from one end of said core to the other, said drive shaft carrying means providing a connection with a power source and means providing a connection for supporting arms of a power sweeping machine, and spaced couplings carried by said shaft within said core for fixing core to said drive shaft for rotation therewith, each coupling including expansible rubberlike elements extending around said shaft and platelike elements embracing each rubberlike element, each coupling having means for moving said platelike elements toward one another to cause said rubberlike elements to bulge outwardly and grip the internal wall of said core in a frictional driving engagement, each rubberlike element having a normal, undistorted shape providing a clearance with the internal wall of said core and each rubberlike element having an internal aperture with a diameter providing a snug fit with said shaft in the undistorted shape of the element, whereby, upon movement of said platelike elements toward one another to cause distortion and outward expansion of said element into a frictional engagement with the internal wall of said core, said element exerts inward pressure against said shaft, each coupling including means for holding it on said shaft for rota' tion therewith.
3. The structure of claim 2 characterized by and including means for fixing at least one platelike element of each coupling to said shaft.
4. The structure of claim 2 characterized by and including means for holding each coupling against rotation relative to said shaft.
t i t

Claims (4)

1. A heavy duty replaceable rotary brush and drive assembly for power street sweeping machines and the like including an elongated, hollow, rigid, cylindrical core, said core having a substantially smooth inner surface from end to end thereof and providing an unobstructed passageway of approximately the same cross-sectional area from end to end of the core, filament holding means on the exterior surface of the core, brush filaments carried by said means and extending outwardly from the core, a drive shaft positioned within said core and extending from one end of said core to the other, said drive shaft carrying means providing a connection with a power source and means providing a connection for supporting arms of a power sweeping machine, and spaced couplings carried by said shaft within said core for fixing said core to said drive shaft for rotation therewith, each coupling including expansible rubberlike elements extending around said shaft and platelike elements embracing each rubberlike element, each coupling having means for moving said platelike elements toward one another to cause said rubberlike elements to bulge outwardly and grip the internal wall of said core in a frictional driving engagement, each coupling including means for holding it on said shaft for rotation therewith, one platelike element of each coupling having an outer annular portion engaging one end face of said core.
2. A heavy duty replaceable rotary brush and drive assembly for power street sweeping machines and the like including an elongated, hollow, rigid, cylindrical core, said core having a substantially smooth inner surface from end to end thereof and providing an unobstructed passageway of approximately the same cross-sectional area from end to end of the core, filament holding means on the exterior surface of the core, brush filaments carried by said means and extending outwardly from the core, a drive shaft positioned within said core and extending from one end of said core to the other, said drive shaft carrying means providing a connection with a power source and means providing a connection for supporting arms of a power sweeping machine, and spaced couplings carried by said shaft within said core for fixing core to said drive shaft for rotation therewith, each coupling including expansible rubberlike elements extending around said shaft and platelike elements embracing each rubberlike element, each coupling having means for moving said platelike elements toward one another to cause said rubberlike elements to bulge outwardly and grip the internal wall of said core in a frictional driving engagement, each rubberlike element having a normal, undistorted shape providing a clearance with the internal wall of said core and each rubberlike element having an internal aperture with a diameter providing a snug fit with said shaft in the undistorted shape of the element, whereby, upon movement of said platelike elements toward one another to cause distortion and outward expansion of said element into a frictional engagement with the internal wall of said core, said element exerts inward pressure against said shaft, each coupling including means for holding it on said shaft for rotation therewith.
3. The structure of claim 2 characterized by and including means for fixing at least one platelike element of each coupling to said shaft.
4. The structure of claim 2 characterized by and including means for holding each coupling against rotation relative to said shaft.
US837052A 1969-06-27 1969-06-27 Disposable rotary brush core and filament assembly for power sweepers Expired - Lifetime US3649985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83705269A 1969-06-27 1969-06-27

Publications (1)

Publication Number Publication Date
US3649985A true US3649985A (en) 1972-03-21

Family

ID=25273383

Family Applications (1)

Application Number Title Priority Date Filing Date
US837052A Expired - Lifetime US3649985A (en) 1969-06-27 1969-06-27 Disposable rotary brush core and filament assembly for power sweepers

Country Status (1)

Country Link
US (1) US3649985A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726109A (en) * 1971-09-27 1973-04-10 Wayne Manufacturing Co Street sweeper power transmission couplings
US3900913A (en) * 1974-04-01 1975-08-26 Arthur E Drumm Core mounting assembly for rotary brooms
US3990391A (en) * 1975-03-19 1976-11-09 Addressograph Multigraph Corporation Mounting for pressure fixing rollers
US4028783A (en) * 1975-03-26 1977-06-14 King Label Company Idler roll for printing press drying stage
US4150622A (en) * 1976-09-13 1979-04-24 Reinhard Muhs Printing roller
US4214339A (en) * 1979-04-23 1980-07-29 Marysville Rotary Broom Service, Inc. Rotary broom core assemblage
US4547940A (en) * 1983-06-22 1985-10-22 American Barmag Corporation Transport roller assembly
DE29502695U1 (en) * 1995-02-18 1995-04-13 Giesler Matthias Dipl Ing Fh Sweeper for work vehicles
US5803235A (en) * 1995-02-13 1998-09-08 Mcginnis, Deceased; Herbert E. Idler roller conversion system with impact shell
US20050172438A1 (en) * 2004-01-29 2005-08-11 Applied Materials, Inc. Methods and apparatus for installing a scrubber brush on a mandrel
US20070209135A1 (en) * 2006-03-07 2007-09-13 Applied Materials, Inc. Scrubber brush with sleeve and brush mandrel for use with the scrubber brush
US20080120957A1 (en) * 2006-11-28 2008-05-29 Didier Delphigue Roller And Agricultural Machine
US20090067767A1 (en) * 2006-11-03 2009-03-12 Faass Robert L Radially compliant bearing hanger for rotating shafts
US20100065675A1 (en) * 2008-09-15 2010-03-18 Xerox Corporation Expandable belt mandrel
US20120090540A1 (en) * 2008-04-04 2012-04-19 Belanger, Inc. Automotive tire dressing applicator
US8914933B1 (en) 2011-03-18 2014-12-23 Roadtec, Inc. Broom assembly for sweeping machine and method of operation
US20160207734A1 (en) * 2015-01-20 2016-07-21 Superba S.A.S. Roller for a wire-feed device
US10329724B2 (en) 2015-11-24 2019-06-25 Roadtec, Inc. Sweeping machine with side loading broom

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749133A (en) * 1954-08-16 1956-06-05 James C Rich Core chuck
US2879534A (en) * 1956-04-19 1959-03-31 Tennant Co G H Rotary brush
GB834598A (en) * 1957-02-20 1960-05-11 Gem Power Brushes Ltd Improvements in or relating to rotary brushes
US3097022A (en) * 1960-01-14 1963-07-09 Sernetz Heinz Elastically mounted antifriction bearing structures
US3195159A (en) * 1963-12-20 1965-07-20 Harvard W K Enchelmaier Quick-change mounting assembly
US3237233A (en) * 1964-03-25 1966-03-01 Smada Corp Rotary brush

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749133A (en) * 1954-08-16 1956-06-05 James C Rich Core chuck
US2879534A (en) * 1956-04-19 1959-03-31 Tennant Co G H Rotary brush
GB834598A (en) * 1957-02-20 1960-05-11 Gem Power Brushes Ltd Improvements in or relating to rotary brushes
US3097022A (en) * 1960-01-14 1963-07-09 Sernetz Heinz Elastically mounted antifriction bearing structures
US3195159A (en) * 1963-12-20 1965-07-20 Harvard W K Enchelmaier Quick-change mounting assembly
US3237233A (en) * 1964-03-25 1966-03-01 Smada Corp Rotary brush

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726109A (en) * 1971-09-27 1973-04-10 Wayne Manufacturing Co Street sweeper power transmission couplings
US3812551A (en) * 1971-09-27 1974-05-28 Wayne Manufacturing Co Street sweeper broom drive
US3900913A (en) * 1974-04-01 1975-08-26 Arthur E Drumm Core mounting assembly for rotary brooms
US3990391A (en) * 1975-03-19 1976-11-09 Addressograph Multigraph Corporation Mounting for pressure fixing rollers
US4028783A (en) * 1975-03-26 1977-06-14 King Label Company Idler roll for printing press drying stage
US4150622A (en) * 1976-09-13 1979-04-24 Reinhard Muhs Printing roller
US4214339A (en) * 1979-04-23 1980-07-29 Marysville Rotary Broom Service, Inc. Rotary broom core assemblage
US4547940A (en) * 1983-06-22 1985-10-22 American Barmag Corporation Transport roller assembly
US5803235A (en) * 1995-02-13 1998-09-08 Mcginnis, Deceased; Herbert E. Idler roller conversion system with impact shell
DE29502695U1 (en) * 1995-02-18 1995-04-13 Giesler Matthias Dipl Ing Fh Sweeper for work vehicles
US20090031516A1 (en) * 2004-01-29 2009-02-05 Applied Materials, Inc. Methods and apparatus for installing a scrubber brush on a mandrel
US7779527B2 (en) 2004-01-29 2010-08-24 Applied Materials, Inc. Methods and apparatus for installing a scrubber brush on a mandrel
WO2005072560A3 (en) * 2004-01-29 2005-11-17 Applied Materials Inc Methods and apparatus for installing a scrubber brush on a mandrel
KR101122792B1 (en) * 2004-01-29 2012-03-21 어플라이드 머티어리얼스, 인코포레이티드 Method and apparatus for installing a scrubber brush on a mandrel
WO2005072560A2 (en) * 2004-01-29 2005-08-11 Applied Materials, Inc. Methods and apparatus for installing a scrubber brush on a mandrel
US20090025197A1 (en) * 2004-01-29 2009-01-29 Applied Materials, Inc. Methods and apparatus for installing a scrubber brush on a mandrel
US20050172438A1 (en) * 2004-01-29 2005-08-11 Applied Materials, Inc. Methods and apparatus for installing a scrubber brush on a mandrel
CN100502722C (en) * 2004-01-29 2009-06-24 应用材料公司 Methods and apparatus for installing a scrubber brush on a mandrel
US8407846B2 (en) 2006-03-07 2013-04-02 Applied Materials, Inc. Scrubber brush with sleeve and brush mandrel for use with the scrubber brush
US20070209135A1 (en) * 2006-03-07 2007-09-13 Applied Materials, Inc. Scrubber brush with sleeve and brush mandrel for use with the scrubber brush
US7771126B2 (en) * 2006-11-03 2010-08-10 Goodrich Corporation Radially compliant bearing hanger for rotating shafts
US20090067767A1 (en) * 2006-11-03 2009-03-12 Faass Robert L Radially compliant bearing hanger for rotating shafts
US20080120957A1 (en) * 2006-11-28 2008-05-29 Didier Delphigue Roller And Agricultural Machine
US8601972B2 (en) * 2008-04-04 2013-12-10 Belanger, Inc. Automotive tire dressing applicator
US20120090540A1 (en) * 2008-04-04 2012-04-19 Belanger, Inc. Automotive tire dressing applicator
CN101676817B (en) * 2008-09-15 2013-06-26 施乐公司 Expandable belt mandrel
US8333388B2 (en) * 2008-09-15 2012-12-18 Xerox Corporation Expandable belt mandrel
US20100065675A1 (en) * 2008-09-15 2010-03-18 Xerox Corporation Expandable belt mandrel
US8914933B1 (en) 2011-03-18 2014-12-23 Roadtec, Inc. Broom assembly for sweeping machine and method of operation
US20160207734A1 (en) * 2015-01-20 2016-07-21 Superba S.A.S. Roller for a wire-feed device
US9994417B2 (en) * 2015-01-20 2018-06-12 Superba S.A.S. Roller for a wire-feed device
US10329724B2 (en) 2015-11-24 2019-06-25 Roadtec, Inc. Sweeping machine with side loading broom
US10704216B2 (en) 2015-11-24 2020-07-07 Roadtec, Inc. Sweeping machine with material presentation system
US10724193B2 (en) 2015-11-24 2020-07-28 Roadtec, Inc. Sweeping machine having improved surface seal

Similar Documents

Publication Publication Date Title
US3649985A (en) Disposable rotary brush core and filament assembly for power sweepers
RU98115393A (en) METHOD FOR MANUFACTURING COIL FROM FLEXIBLE SUBJECT AND ITS CORE
US4779716A (en) Conveyor belt cleaner
US3937412A (en) Expanding outer sleeve for a mandrel or chuck
US4495683A (en) Roller, in particular transport roller
US3942210A (en) Brush frame and shell
US2970333A (en) Quick-change brush means
SE8801061D0 (en) honing tool
ITMI932387A1 (en) MODULAR EXPANDABLE GRINDING TOOL, ESPECIALLY FOR GRINDING MACHINES WITH TUBULAR ABRASIVE SLEEVE ELEMENT
US2452378A (en) Cable reel
US3688335A (en) Brush structure
DE3476016D1 (en) Cylindrical brush for sweepers
US3900913A (en) Core mounting assembly for rotary brooms
CN210150512U (en) Automatic unwinding equipment with adjustable diameter
EP0315107A2 (en) Rotary grinding brush
US3481017A (en) Core structures for rotary brushes
US2379205A (en) Brush construction and mounting therefor
US1975567A (en) Fastening device for rotary brushes and the like
US3329986A (en) Rotary brush
CA1066007A (en) Rotary brush roll construction
US3810571A (en) Self-centering rolls
ATE356561T1 (en) MODULAR ROLLERS FOR INDUSTRIAL BRUSH ROLL, ESPECIALLY FOR OUTDOOR USE
US4165551A (en) Rotary brush roll construction
US2864112A (en) Street sweeper brush and holder
US3763516A (en) Car washing brush