US3174371A

US3174371A - Band ribbon feeding mechanism

Info

Publication number: US3174371A
Application number: US110289A
Authority: US
Inventors: Macomber James Keith
Original assignee: CONSOLIDATED LITHOGRAPHING CORP
Current assignee: CONSOLIDATED LITHOGRAPHING CORP
Priority date: 1961-04-10
Filing date: 1961-04-10
Publication date: 1965-03-23
Anticipated expiration: 1982-03-23

Description

March 23, 1965 J. K. MACIOMBER 3,174,371

BAND RIBBON FEEDING MECHANISM Filed April 10, 1961 4 Sheets-Sheet 1 INVENTOR. JAMES KEITH MACUMQEQ 2am; MA

4 TTOENE Y March 23, 1965 J, K. MACOMBER 3,174,371

BAND RIBBON FEEDING MECHANISM Filed April 10, 1961 4 Sheets-Sheet 2 INVENTOR. 44 48 33 48 mm-s KE/I'H MACOMBER Z QAQ A T TOENE Y March 23, 1965 J, K. MACOMBER BAND RIBBON FEEDING MECHANISM 4 Sheets-Sheet 3 Filed April 10, 1961 RELAY INVENTOR. JIMES KEITH MACUMBER yaw/ A K 4 TToRA/EY March 23, 1965 J. K. MACOMBER 3,174,371

BAND RIBBON FEEDING MECHANISM Filed April 10, 1961 4 Sheets-Sheet 4 E'q-IZ svgdwmd A T TOR/V5 Y United States Patent 3,174,371 BAND RIBBON FEEDING MECHANKSM James Keith Macomber, Roclrville Centre, N.Y., assignor to Consolidated Lithographing Corporation, New York, N.Y., a corporation of New York Filed Apr. 10, 1961, Ser. No. 110,289 20 Claims. (Cl. 83-86) This invention relates to machines for wrapping cigars or the like in cellophane packages with a band wrapped around the article. The main object of this invention is to provide mechanical means to supply cut bands from a continuous supply of ribbon of uncut bands to be delivered from a reel, or ribbon holding means. In the usual device of the prior art, banding machines are provided with a hopper into which preeut bands are placed by an operator. The bands are then removed, usually from the bottom of the hopper by a sucker or other mechanism of the banding machine and are placed around the article by the machine.

There are at least three types of such banding machines, one of which comprises a circular type turret, with several positions, which rotates on a vertical axis, another which comprises a turret, with several positions, rotating on a horizontal axis, and another which operates in connection with a roller application principle. In most cases, bands are usually supplied to the machine through a hopper from which one cut band is removed at a time. A hopper is not absolutely necessary, however, since in some machines a projecting band is heat sealed to a web of wrap ping cellophane and then cut from the band supply ribbon. Since the band is already sealed to the cellophane prior to being cut, a hopper would be superfluous.

It is an object of my invention to provide a device which can either be a separate auxiliary device, or an attachment for an existing banding machine, or incorporated into a new banding machine, which will supply a cut band at the proper point of operation of the machine, without the necessity of precutting the bands, packaging the cut bands and having an operator place the cut bands within the hopper of the machine.

It is a further object of my invention to supply such cut bands by mechanical means without the use of electric, or electronic, auxiliary devices for measuring and cutting the said cut band. I refer to the common electrical device comprising one or more photo-electric cells and solenoids to actuate starting and stopping and cutting mechanisms.

I achieve the objects of my invention by providing a supply reel and a web or ribbon of uncut bands and fingers mechanically actuated to move the said bands for a predetermined distance to be cut into a cut band. These features, as well as other features of my invention are illustrated in the accompanying drawings in which:

FIG. 1 is a perspective view of my invention as adapted to be incorporated in a banding machine;

FIG. 2 is a view similar to FIG. 1 showing the Working parts of my invention in relative positions, with the portions in solid line and labeled F shown in forward posiition, and the portions shown in solid line and labeled R moving toward rearward position, and the portions shown in dotted lines again moving toward forward position;

FIG. 3 is a sectional view of the carriage, the rocker arms, the fingers and the ribbon pathway of my device as seen along the lines 3-3 in FIG. 1;

FIG. 4 is a top plan view of a detail showing the cam and cam roller and associated parts for operating the cutting means of my device;

FIG. 5 is an enlarged view of a detail of FIG. 3 showing another form of guide means for the ribbon pathway of my device;

FIG. 6 is a detail showing atop plan view of the hopper of my device;

FIG. 6a is a detail showing a top plan view of another form of hopper;

FIG. 6b is a detail showing a top plan view of a further form of hopper;

FIG. 7 is a section along the lines 77 in FIG. 6;

FIG. 8 is a section along the lines 8-8 in FIG. 6;

FIG. 9 is a section along the lines -9 in FIG. 6;

FIG. 10 is a diagrammatic figure showing a detail of a switching arrangement associated with the hopper in an alternate form of my invention;

FIG. 11 is a front elevation of a finger of my device;

FIG. 12 is an enlarged detail as seen from lines 12-12 of FIG. 11;

FIG. 13 is a top plan view of a portion of band ribbon moving through my device in the direction of the arrows, being gripped by a pair of finger ends shown partially in section and partially in phantom;

FIG. 14 is a view similar to FIG. 13 showing an alternate form of band ribbon;

FIG. 15 is a top plan view of a portion of another alternate form of band ribbon;

FIG. 16 shows side and front elevations of an alternate form of finger for use with band ribbons shown in FIG. 15;

FIG. 17 is a top plan view of a portion of another alternate form of band ribbon;

FIG. 18 is an alternate form of finger for use with the band ribbon shown in FIG. 17;

FIG. 19 is a cross section along the lines 1919 in FIG. 18; and,

FIG. 20 is an elevational detail, partly in section, showing how my invention can be adapted to another form of machine for wrapping and handing.

My mechanical band feed has guide means including a top shaft 16 and a bottom shaft 11 for a carriage 12. The shafts l0 and 11 may be mounted on the main frame of a banding or packaging machine or on the frame of an auxiliary unit, in any suitable manner. I provide a reciprocating carriage 12 with

bearings

13 and 14 adapted to slide fit around the shafts 1i and 11 respectively. The carriage 12 has a bearing or shaft hanger 15 within which I place a shaft 16 which has a rocker arm 17 at one end and a rocker arm 18 at the other end. Rocker arm 18 has fingers 19 mounted by means of screws 20.

Rocker arm 17 is connected by means of a link 21 to a feed drive crank 22. Link 21 has ball joint suspen sion bearings 23 and 24 respectively which connect to the rocker arm 17 and the feed drive crank 22.

Feed drive crank 22 is in turn connected with a band feed drive shaft 25 which comprises universal joints 26 and

shaft ends

27 and 28. Shaft end 28 is connected to the familiar main drive (not shown) of the packaging machine by means of a Gilmer, or other, drive not shown completely, as it is old and familiar in the art. The drive connection is made by means of a 1 to 1 ratio so that every time the main drive of the machine makes one revolution, the band feed drive shaft 25 will make one revolution. This ratio should deliver one cut cigar band 31 for each revolution of the main drive which will correspond to the presentation of one cigar, or other article, for handing.

The cigar bands 31 are cut from a band ribbon 33 drawn from a reel 34 suspended on the main frame of the machine and over a plate 29 supported by spring wires 39 mounted on the main frame.

I provide a ribbon pathway 35 which is defined by guide means for guiding the ribbon 33, such as the op posed

portions

35a and 35b of the ribbon guide means. Portion 35a is placed on the main frame of the device in faced relationship to portion 35b, and is spaced sufficiently distant, so that the band ribbon 33 may slide or be pushed within pathway 35 between 35a and 35b without undue drag or friction. The ribbon pathway guide means also comprise

portions

35c and 35d which should be spaced somewhat wider than the ribbon 33 to define the width of the ribbon path, or pathway, plane 35.

The band ribbon 33 comprises a series of bands 31 which are as yet uncut. Each band comprises end portions 42 and a central or medallion portion 43. Thus the uncut band ribbon 33 increases and diminishes in width in a regular fashion from a narrower portion at the ends 42 to a wider portion at the center or medallion 43. I shall designate the measurement of the narrower portion as N and of the wider portion as W. The width of the ribbon guide means 35a and 3511 should be approximately the same width as the narrow or N measurement across the band 31. Thus, the edges of the center or medallion 43 of the wider portion of the band 31 will extend on either side of the

portions

35a and 35b so that the ribbon path, or pathway 35 will also extend beyond 35a and 35b but within 350 and 35d. It is understood that 35a, 35b, 35c and 35d are suspended from the main frame by means of brackets or any other suspension means known to the art. In an alternate form such as ribbon guide means 44, portions 35!), 35c and 35d are made in combination, and may be mounted on the main frame in such fashion. In alternate form 44, longitudinal slots 44a are provided to receive the fingers 19. Thus the ends 47 of the fingers 19 may move within the plane 35 of the ribbon pathway in either form of the guide means shown. In the

form comprising portions

35a, 35b, 35c and 35d, the fingers 19 may move alongside

portions

35a and 35b and within

portions

35c and 35d, and in the form comprising portion 44, the longitudinal slots 44a permit movement of the fingers 19 alongside ribbon path 35.

These fingers 19 comprise a body portion 45 having an opening 46 through which a screw is placed to attach the finger 19 to the rocker arm 18. Finger ends 47 depend from each finger body portion 45. The width of the finger ends 47 must be less than the distance between element 35c and

elements

35a and 35b, or element 35b and

elements

35a and 35b, or the inside width of slots 44a, so that finger ends 47 may move freely without touching the mentioned elements. The finger ends 47, in the preferred form of the invention, are arranged as a set of two, or a pair of finger ends 47, on the rocker arm 18 in such a manner, that the distance between facing sides 47a of the finger ends 47 is smaller than the measurement W across the band 31 or band ribbon 33.

Near the bottom of each finger end 47, I have provided an obliquely shaped cut 48. The width of the cut 48 should be slightly greater than the thickness of the band ribbon 33, including any necessary splice of the ribbon, since the band ribbon 33 must fit Within the dimensions of the cut 48 of the finger ends 47. The finger ends 47 are designed to engage the band ribbon 33 within the cuts 48, and by so doing: to pull the band ribbon 33 from the ribbon supply means or reel 34 past the spring mounted ribbon guide means or plate 29 through the ribbon band path 35 and: to push the band ribbon 33 past the position of the fingers 19 and beyond the band pathway 35 to the cutting means.

The inner ends or walls 60 of the cuts 48 are substantially oblique, and may be straight 60' or curved 60a to fit the particular contour of the band ribbon 33 or 33a as the case may be respectively. The inner wall 60 will be in substantial registration with a portion of the edges 61 of the band ribbon 33. The edges 61 are those portions of the edges of the band ribbon 33 between the widest portion W and the narrowest portion N. Thus, if a band ribbon 33 is shaped from wide to narrow in straight line relationship, then the inner wall 60 of the cut 48 will be a straight line. If on the other hand,

the shape of the band ribbon 33a from wide to narrow is in a curved relationship, then the inner wall 60a will have a corresponding curve, to fit the curve of the band ribbon 33a.

It will now be appreciated that the band ribbon 33 is pushed or pulled forward by the finger ends 47 which are adapted to reciprocate, since mounted on the reciprocating carriage 12, in the direction of the movement of the band ribbon 33. When the finger ends 47 move forward the cuts 48 are in the same plane 35 as the band ribbon 33 and engage its edges 61. When the finger ends 47 move backward they are raised above the plane 35 of the band ribbon 33, by rocker arm 18, as I will explain more fully hereinbelow, so as not to engage and foul the band ribbon 33 on the reverse movement.

I provide rounded leading edges 62 for the cuts 48 so that the finger ends 47 will engage edges 61 of the band ribbon 33 as the fingers 19 move forward. The rounded leading edges 62 will engage the edges 61 of the ribbon 33 even though such edges 61 may have been bent or creased. The radius of the rounded leading edges 62 will serve to widen the cut 48 and the leading edge to insure that edges 61 will be guided into cuts 48. Thus, the leading edges 62 of the cuts 48 are rounded to provide a wide leading edge to place the bands within the cuts 43 and yet the cuts 48 are narrow enough so that the inner walls 60 can make good engagement with the edges 61 of the band 33, without buckling the band 33.

Opperation In order for the device to operate properly, finger shifting means are provided so that finger ends 47 may shift to different positions with relation to the ribbon pathway 35. The finger shifting means comprise the link 21 and the

rocker arms

17 and 18 as well as other elements including stop means.

The carriage 12 is provided with stop means, a first stop means or forward stop pin 65 and a second stop means or rear stop pin 66. An upper limit stop guide, or shift means restrainer 67 is mounted on any convenient place on the main frame of the machine at or near the most forward position which the reciprocating fingers 19 may take in the operation of the machine. The function of these various stop means 65, 66 and 67 are as follows: The forward stop pin 65 and the rear stop pin 66 limit the rocking movement of rocker arm 17. When link 21 moves in a forward direction as shown in the arrow F in FIG. 1, it pushes rocker arm 17 forward. This causes finger ends 47 to move downward until cuts 48 will be in the same plane as edges 61 of the band ribbon 33. This should occur when arm 17 hits forward stop pin 65. The forward rocking action will then cease, finger ends 47 will stop moving downward, and the entire carriage 12 and its components will then move forward. The cuts 48 of the finger ends 47 will engage edges 61 of the band ribbon 33 thereby pulling and pushing the band ribbon 33 along.

Shortly, link 21 will stop and reverse because of the action of feed drive crank 22. At this point the upper surfaces 68 of at least one of the finger bodies 45 will be underneath shift restrainer 67. Thus, as the link 21 draws back, the motion of the carriage 12 and the fingers 19 will reverse, but the finger end cuts 48 will not shift upward, continuing to move in reverse in the same plane as band ribbon 33, until the upper surface 68 clears the shift restrainer 67.

When the link 21 stops and reverses, as aforesaid, the ribbon 33 stops and is held motionless by friction brakmg means comprising a felt pad 151 adapted to hold the ribbon 33 against against guide portion 35b. Felt pad 151 is mounted at one end of a brake arm 152 which is held in place by means of a bearing on the 'U shaped bracket 153, which is soldered or welded on the frame of the device, and an expansion spring 154, seated against the spring arm 152 and a portion of the frame of the device. The other end 155 of the spring arm 152 may serve as a thumb release. By pressing end 155 down with the finger or thumb will release the felt brake pad 151 when it is necessary to thread in a new band ribbon 33. The tension of the friction brake 150 is such that when there is no pulling action on the band ribbon 33, the band ribbon will be held motionless against backward pull exerted by tension in springs 31 but when there is pulling action by means of the fingers, the brake 150 will permit the band ribbon to move forward.

After the ribbon 33 is stopped by action of brake 151B, finger ends 47 will be drawn back toward the narrower dimension N of the band, and cuts 48 will ride back clear of the wider dimension W and the edges 61. At

this position, upper portion 68 of finger bodies should clear restrainer 67, permitting the fingers 19 to shift in an upward direction and permitting rocker arm 17 to rock in a reverse or backward rocking motion until it hits stop pin 66.

The fingers 19 will be raised when the finger shifting means (

elements

16, 17, 18 and 21) reverses, and reverse direction of the reciprocating carriage 12 is prevented until the backward rocking motion of rocker arm 17 stops against stop pin 66. Motion of the carriage 12 may be prevented by the normal friction in the

bearings

13 and 14 or by providing a nylon friction brake 160 which fits in an aperture 161 in the carriage and is tensioned by means of a flat spring 162 which is fastened to the carriage 12. The action of the flat spring 162 holds the nylon friction brake against shaft 11). This friction brake means 160 will limit the movement of the carriage 12 when the power transmission means such as the link 21 is not acting directly on the carriage 12. When the transmission means applies power to the carriage 12 by means of one of the stops or 66), the carriage will move; otherwise, it will be held in place by the braking means 160.

Thus, after the fingers 19 are raised and the action of the link 21 continues in reverse direction, it will pull rocker arm 17 against stop pin 66 to draw carriage 12 back to its original or starting position. Therefore, one revolution of band feed drive shaft 25 will move the carriage 12 forward and back again in a reciprocating motion by means of the transmission or drive linkage means which includes the link 21. As the carriage 12 moves forward and back, the finger end cuts 48 will dip into a first position in the plane 35 of the band ribbon 33, push the band ribbon 33 forward, draw back and then raise to a second position, outside of or away from plane 35, and then move back again to starting position. At the next cycle the finger end cuts 48 will dip again and engage the next medallion, or wide portion W of band ribbon 33 to move it forward for a distance of one individual band 31 of the band ribbon 33. The described motion permits the cuts 48 to disengage from hand edges 61 during a backward motion and prevents tearing of the band edges.

At the end of each cycle of feeding a length of the band ribbon 33, cutting or knife means are caused to operate to cut a band 31 from the end of the ribbon 33. The cut band 31 drops into a hopper 71 where it is available to be transported into the wrapping machinery.

In the form of the invention shown, the cutting means 70 has a bottom knife 72 and a top knife 73. The bottom knife 72 is stationary and is fixed to a convenient portion of the frame of the device. The top knife 73 is attached to bottom shaft 11 in such a manner that when bottom shaft 11 is turned on its axis, top knife 73 will operate against stationary bottom knife 72 to make a band cut. Shaft 11 is spring biased by means of tension springs 76 pulling a lever assembly 74 and attached to any convenient portion of the frame. The spring means 76 pull the upper knife 73 to a cutting position. This is a safety feature. Springs 76 pull the lever assembly 74 and cause bottom shaft 11 to turn on its axis.

Bottom shaft 11 is rotatably mounted on suitable bearings so that it may turn on its axis when lever assembly 74 is moved in one direction or the other. Thus, since the action of the springs 76 pulls the top knife 73 to cutting position, a counter force must be provided to keep the top knife 73 in open position during the movement of the band ribbon 33. For this purpose I have provided a cam 77 which is mounted on, and revolves with, the band feed drive shaft 25. The cam 77 has a circumference with a low section 73 and a high section 81).

The lever assembly 74 is provided with a cam roller 79, and action of spring 76 forces cam roller 79 to bear against the circumference of cam 77. Thus as cam 77 revolves, during each revolution cam roller 79 will move against the high section 31B and the low section 78, alternately. This in turn forces top knife 73 to open and then permits it to be pulled to closed position, alternately, so that a band 31 can be cut from the ribbon 33 for each revolution of the band feed drive shaft 25 so as the shaft 25 continues to revolve, the upper knife 73 will continue to open and close. When the upper knife is in open position, it permits the band ribbon 33 to pass through without being cut. The low section 78 of cam 77 is placed in such relation to shaft 25 that it will permit the springs '76 to make the knife cut at that portion of the revolution of the shaft 25 when link 21 is pulling back in reverse direction. Thus, the cut will be made between forward pushes when the band ribbon 33 is at rest and its end portion 31 is in the hopper.

in an alternate form of my invention, I can provide my band cutting and hopper loading means with an independent motor, as a self-contained independent unit. Such an independent unit can be installed on a wrapping machine with a horizontal turret, placing the hopper v71 at the proper position with relation to the turret positions of the machine. In this alternate form of my invention, I would provide the hopper 71 with a limit micro-switching system so that after a small supply of bands are cut, the motor will stop. When these out bands 31 are depleted until there are perhaps four or five left in the hopper 71, a microswitch 171, or other switching means through a relay 172, would then start the motor 179 to build up a supply of bands 31 in the hopper 71. When the level of the bands 31 is high enough, the microswitch 171 will be actuated by switch throwing means, or switch arm 173, to stop the motor 1'71 once again. Thus a supply of bands 31 is maintained in the hopper 71 independent of the main drive of the wrapping machine.

in another form of my invention (see FIG. 20), I would provide a means for feeding cut bands 31 mechanically into a machine such as the one disclosed in my copending application for Wrapping and Tear Banding Machine, Serial Number 853,613, filed November 17, 1959. In this alternate form, the carriage assembly 12 would reciprocate vertically instead of horizontally, and the band feed pathway 35 would be vertical instead of horizontal. Instead of having a hopper 71 at the end of the band feed pathway 35, the band ribbon 33 would feed directly into a hand holding means 181 After the band 31 is cut in the usual manner by knife 181, it will be held in position by the hand holding means 189 until it is wrapped around a cigar 182 by the main banding machinery.

I have also made other types of fingers adapted to move other types of band ribbon. In FIG. 15 I show a band ribbon 139 which has straight edges 191 and circular holes 192. In order to move this type of band ribbon 1911, I provide a single finger 195.

In FIG. 17 I show a band ribbon 200 with straight edges 201 and central flaps, or cuts 202. This type of ribbon 2% can be pushed by a single finger 205 with a out 2116. Ribbon Ztitl has a particular advantage over ribbon 1%. The central flaps, or openings 292 are automatically fitted back in place as a part of the band when the cut band is held in place between the cigar and the wrapper. Thus, the appearance of the band is not marred by a visible hole.

I may also provide the hopper 71 with band alignment means. This is done by providing for a hopper 71 having ends 220 and 221 which are moveable with respect to each other. End 229 has a ledge means 222 and end 221 has a ledge means 223. The ledge means may be in the form of a solid ledge as shown or one, or more, tines, teeth or prongs, or any other equivalent arrangement such as one or more projections, capable of holding the bands. The cut band 31 rests with its ends on the said ledge means 222 and 223. If end 226 is held stationary, and end 221 is shifted laterally with respect thereto, the alignment of the cut band 31 can be changed prior to its being placed on a cigar. This type of adjustment is important since it will eliminate inaccuracies in banding resulting in a helix. By making this lateral adjustment, the helix can be eliminated as desired. End 221 of the hopper 71 is a part of element 224 which has a slot 225 and a tongue 226 which fits into groove 227 of element 228 of which end 220 is a part. A machine screw 23% holds element 224 in place. By loosening the machine screw 239, element 224 may be shifted transversely and held in such shifted position by again tightening screw 23%. By this means, the two end parts of the hopper 71 are moved with relation to each other to provide for band adjustment. I also provide a stop 231 to prevent the cut bands 31 from overruning the hopper '71 during the operation of the device.

In order to hold the cut band 31 in the proper adjusted position, I provide the hopper 71 with tapered

sides

235, 236, 237 and 238. This is a taper perpendicular to the surface of the face of the cut band 31 in the hopper '71 (I shall call this a settling taper), to distinguish it from a taper in a longitudinal direction (which may be used to facilitate the entrance of the band into the hopper 71 as it is fed). The purpose of the sides with settling tapers is to provide guides for the band to settle to the bottom of the hopper 71 in the correct position. For purposes of clarity, I will call the sides with settling tapers band settling guide means.

Ordinarily, lateral adjustment of the hopper '71 as described hereinabove would probably cause a cut band 31 to buckle and defeat the purpose of the adjustment. This buckling would be caused by a band 31 held snugly at the bottom of the hopper 71 if it had tapered sides formed to correspond exactly to the contour of the cut band 31. b, c, and d on the band settling guide means as shown on FIGS. 1 and 6 of the drawings. These means extend inwardly from the sides 235238 to the edges of the bottom cut band 31, keeping the rest of the edges of the bands 31. away from the sides 235-238. The four bearing means a, b, c and d are located inwardly from the ends of the bands 31 and will permit the hopper '71 to be laterally adjusted with bands loaded in it without buckling the bands. These bearing means may be in the form of contact surfaces, edges, points or lines. In addition to the four lateral bearing means, the bands are also held in place longitudinally between the stationary bottom knife 72 and the stop 231.

In another form of hopper 7111, I provide ledge means 222a and 2230 for a band to rest upon. Instead of having sides, the hopper 71a merely has four bearing edges or lines 2, f, g and h.

In FIG. 6a I show this alternate form of invention 71a with four settling

tapers

235e, 236 237h and 238g, and in FIG. 6b, I show a form of the invention 71b with only two settling tapers 236 and 2383; with bearing edges e and It being substantially perpendicular to the surface of the face of band 31d. It is sometimes preferable to have four settling tapers, or only two settling tapers as shown, depending upon the type of band used I, therefore, provide four bearing means a,

in the device. In the form of invention shown in FIG. 6a, band 31c has straight edges, and in the form of invention shown in FIG. 6b, band 31d has contoured edges. Thus, the hopper can be made to accommodate many types of bands.

While I have described my invention in its preferred forms, there are other forms which it may take without departing from the spirit of the invention. For example, in order to adjust the position of the cut bands 31 by shifting the hopper, I may provide a hopper which swivels on a perpendicular axis, as an equivalent construction to the hopper described above which is separable and may be adjusted laterally. There may be many other examples. I, therefore, desire to be protected for all forms coming within the scope of the claims hereinbclow.

Wherefore, I claim:

1. In a device for feeding a web of ribbon or the like, finger means having at least one cut adapted to engage the said web, in which the said cut has at least one inner surface substantially conforming to the contour of an edge of the web and the width of the said cut is wider than the thickness of the said web but not wide enough to permit the said web to buckle within the said cut.

2. A ribbon driving device having a main frame and comprising: a ribbon path for a ribbon, a reciprocating carriage movably mounted on guide means substantially parallel to the said ribbon path, at least one finger mounted on finger shifting means on said carriage, in which the said finger has cut means forming an opening facing an edge portion of the said ribbon, and having an inner wall adapted to engage said edge portion of said ribbon, and having substantially parallel facing walls between the said opening and the said inner wall, stop means to limit the amount of shift of the said finger, said stop means adapted to position the said out means in the plane of the ribbon in the said ribbon path during a portion of the movement of the said reciprocating carriage.

3. The ribbon driving device as defined in claim 2, in which there are at least one pair of fingers mounted on the said finger shifting means, and in which the openings in the cuts of the said fingers face edge portions of the said ribbon and the inner walls of the said cuts, and the said substantially parallel facing walls of the said cuts of each of said pair of fingers move as a unit.

4. The device as defined in claim 3, having cutting means mounted at an end of the said ribbon path, and driving means to actuate the said reciprocating carriage, the said finger shifting means, and the said cutting means.

5. The device as defined in claim 4, having ribbon supply means incorporating a spring mounted ribbon guide.

6. The device as defined in claim 2, having cutting means mounted at an end of the said ribbon path, and driving means to actuate the said reciprocating carriage,

the said finger shifting means, and the said cutting means.

7. The device as defined in claim 6, having ribbon supply means incorporating a spring mounted ribbon guide.

8. A device for driving a band ribbon intermittently comprising: a ribbon path having at least one longitudinal slot; a reciprocating carriage mounted on carriage guide means substantially parallel to the said ribbon path; finger means mounted on finger shifting means on said carriage; and stop means to stop the shift of the finger means when the said finger means have entered the slot; and other stop means associated with the carriage to stop the shift of the said finger means when the said finger means shift clear of the slot; in which the said finger has cut means forming an opening therein and having an inner wall and substantially parallel facing walls between the said opening and the said inner wall, said substantially parallel facing walls being parallel to, and said inner wall being in, a plane defined by the said ribbon path, when the said finger means have entered the said slot and are stopped by the first mentioned stop means.

9. A ribbon driving device for driving a web of ribbon intermittently, in combination with a main frame and a main drive, comprising at least one ribbon guide member to define a pathway for the said web of ribbon; finger means mounted on finger shifting means comprising a body portion movably mounted on a moveable carriage which is reciprocally mounted on carriage guide means; said finger shifting means adapted to shift relatively to the said ribbon pathway so that at least a portion of the said finger means will move alternately to a first position Within the plane o-f the ribbon pathway and then to a second position outside of the plane of the ribbon pathway; drive linkage comprising a portion of the body portion of the said shifting means to connect the said moveable carriage to the said main drive of the machine; and stop means adapted to co-act with the said finger shifting means to limit the shifting range thereof to the aforementioned first and second positions of the said finger means.

10. The device as described in claim 9, in Which the said moveable carriage means has a friction brake which acts on the said carriage guide means.

11. The device as defined in claim 9, in which the said stop means comprises at least one pair of stops on the said moveable carriage of which at least one stop is mounted on either side of a portion of the said finger shifting means.

12. The device as defined in claim 9, in which the said stop means comprises a single stop on the moveable carriage adapted to co-act with at least two portions of the said finger shifting means.

13. A ribbon driving device for driving a web of ribbon intermittently, in combination With a main frame and a main drive, comprising at least one ribbon guide member to define a pathway for the said web of ribbon; finger means mounted on finger shifting means associated with a moveable carriage reciprocally mounted on carriage guide means; said finger shifting means adapted to shift relatively to the said ribbon pathway so that at least a portion of the said finger means will move alternately to a first position within the plane of the ribbon pathway and then to a second position outside of the plane of the ribbon pathway; drive linkage comprising a portion of the said shifting means to connect the said moveable carriage to the said main drive of the machine; a first stop means co-acting with a portion of the said finger shifting means, and a second stop means co-acting with a portion of the said finger shifting means, with the said stop means so positioned that when the drive linkage moves the said finger shifting means toward the first stop means, the said first stop means will stop the shifting movement of the said shifting means at the said first position and apply the thrust of the said linkage means directly to the said moveable carriage to cause it to move a forward direction;

, and when the said linkage means moves in a backward direction, the said second stop means will stop the shifting of the said shifting means at the said second position and apply the reverse thrust of the said linkage means directly to the moveable carriage, to cause the moveable carriage to move in a backward direction.

14. The device as defined in claim 13, which includes cutting means to cut bands from the ribbon at the forward end of the ribbon guide member; said cutting means being actuated by the main drive of the device.

15. The device as defined in claim 14, having a hopper to receive the cut bands.

16. The device as defined in claim 13, in which the said finger means are a pair of fingers adapted to straddle the web of ribbon.

17. The device as defined in claim 13, in which the said finger means are a pair of fingers adapted to straddle the said web of ribbon and have cuts adapted to engage portions of the said web of ribbon.

18. The device as defined in claim 17, in which the said cuts in the said fingers have curved leading edges.

19. The device as defined in claim 18, in which the said moveable carriage means has friction brake means which act on the said carriage guide means.

20. In a device for feeding a web of ribbon or the like, finger means having at least one cut adapted to engage the said Web, said cut having curved leading edges in which the said out has at least one inner surface substantially conforming to the contour of an edge of the web and the width of the said out is Wider than the thickness of the said web but not wide enough to permit the said web to buckle within the said cut.

References Cited by the Examiner UNITED STATES PATENTS 1,709,354 4/29 Kohnle 83-278 1,813,598 7/31 Ackley 83-93 1,821,101 9/31 Lashar 281-5 1,859,372 5/32 Mutschler 83-278 2,000,159 5/35 Bolognino 83-93 2,045,046 6/36 Mudd 83-61 2,194,309 3/40 Krueger 281-5 2,367,999 1/45 Collins 232-44 2,529,750 11/50 Weingart 83-61 2,634,974 4/53 Chuy 226-162 2,677,477 5/54 Eisengrein et a1. 83-278 X 2,720,994 10/55 Arvidson 83-278 X 2,774,533 12/56 Grant 232-44 2,780,288 2/57 Wharton et a1. 83-93 ANDREW R. IUHASZ, Primary Examiner. CARL W. TOMLIN, LEON PEAR, Examiners,

Claims

2. A RIBBON DRIVING DEVICE HAVING A MAIN FRAME AND COMPRISING: A RIBBON PATH FOR A RIBBON, A RECIPROCATING CARRIAGE MOVABLY MOUNTED ON GUIDE MEANS SUBSTANTIALLY PARALLEL TO THE SIDE RIBBON PATH, AT LEAST ONE FINGER MOUNTED ON FINGER SHIFTING MEANS ON SAID CARRIAGE, IN WHICH THE SAID FINGER HAS CUT MEANS FORMING AN OPENING FACING AN EDGE PORTION OF THE SIDE RIBBON, AND HAVING AN INNER WALL ADAPTED TO ENGAGE SAID EDGE PORTION OF SAID RIBBON, AND HAVING SUBSTANTIALLY PARALLEL FACING WALLS BEING THE SAID OPENING AND THE SAID INNER WALL, STOP MEANS TO LIMIT THE ANOUNT OF SHIFT OF THE SAID FINGER, SAID STOP MEANS ADAPTED TO POSITION THE SAID CUT MEANS IN THE PLANE OF THE RIBBON IN THE SAID RIBBON PATH DURING A PORTION OF THE MOVEMENT OF THE SAID RECIPROCATING CARRIAGE.
6. THE DEVICE AS DEFINED IN CLAIM 2, HAVING CUTTING MEANS MOUNTED AT AN END OF THE SAID RIBBON PATH, AND DRIVING MEANS TO ACTUATE THE SAID RECIPROCATING CARRIAGE, THE SAID FINGER SHIFTING MEANS, AND THE SAID CUTTING MEANS.