US2597971A - Rotary buffing and polishing machine - Google Patents

Description

L: H BURNHAM I ROTARY BUFFING AND POLISHING MACHINE Filed March 26, 1948 2 Sl-IEETS-SHEET 1 May 27 1952 May 27, 1952 L. H. BURNHAM ROTARY BUFFING AND POLISHING MACHINE 2 SHEETSSHEET 2 Filed March 26, 1948 Im/mtar Ame H. Bamlzzam Patented May 27, 1952 ROTARY BUFFING AND POLISHING MAC HINE

Lee H. Burnham, North Platte Nebr. Application March 26, 1948, Serial No. 17,157

9 Claims. 1

This invention relates to new and useful improvements in bufling and polishing machines and the primary object of the present invention is to provide a bufiing and polishing machine including a novel and improved polishing cloth supporting head.

Another important object of the present invention is to provide a bufling and polishing head including a rotary member and novel and improved means for lockably securing a polishing or bufiing cloth supporting element relative to the rotary member.

A' further object of the present invention is to provide a portable buffing and polishing machine so designed as to permit the same to be conveniently balanced and handled by one person for use in buffing or polishing work in such a manner as to relieve the normal strain upon a users wrist.

A still further aim of the present invention is to provide a buffing and polishing machine that is simple and practical in construction, small and compact in structure, strong and reliable in use, neat and attractive in appearance, relatively inexpensive to manufacture, and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawi'ngs forming part hereof, wherein like numerals refer tolike parts throughout, and in which:

Figure l is a perspective View of the present buffing and polishing machine;

Figure 2 is a horizontal sectional view taken substantially on the plane of section line 2-2 of Figure 4, and showing the handle removed therefrom;

Figure "3 is a fragmentary group perspective view showing the lower portion of the rotatable gearing supporting member and the manner in which the same is applied to the pad supporting plate (shown in part);

Figure 4 is a longitudinal vertical sectional view'of the present buffing and polishing machine taken substantially on the plane of section line 4-4 of Figure 2; and,

Figure 5 is a reduced horizontal sectional view taken substantially on the plane of section line 5-5 of Figure 4;

Referring now to thedrawings in detail, wherein for the purpose of illustration, there is disclosed'a preferred embodiment of the present invention, the numeral lll'i'e'presents an annular housing or casing having a depending annular flange portion 12 constituting a peripheral wall. Integrally formed with the casing l0 about an eccentrically disposed opening l4 provided in the casing in, is an upstanding cylindrical or sleevelike upper casing it having an integral closure or upper wall [8.

Fixed within the upper casing I6, is circular bearing plate having a plurality of openings 22 and an annular central portion 24 that supports a sleeve 25 that rotatably engages one end 28 of'the drive shaft 30 of an electric motor 32 mounted within the upper casing It. The opposite end 34 of the drive shaft 30 projects outwardly from the motor 32 and is rotatably positioned in a bearing sleeve 36 mounted in a socket 38 that depends from the upper Wall [8.

Rigidly secured to the inner periphery of the flanged portion I2, is a plurality of circumferentially spaced attaching ears 40 that are removably secured to an annular bearing and support ring 42. Frictionally and rotatably positioned on the upper face of the ring 42, is an annular dish-like gear supporting member 44 having a plurality of annular heat reducing openings 45 and a central recess 46 that rotat ably engages a fixed cylindrical guide 41 mounted on the casing It for guiding the rotary movement of the member 44 on the bearing and support ring 42. Fixed in an annular recess 48 in the inner face of the flanged portion 50 of the member 44, is a ring gear 52 that intermeshes with a pinion 54 fixed on the end 28 of the drive shaft 30 for effecting a rotation of the member 44 by the drive shaft 3i] of the motor 32.

Integrally formed with and depending from the lower face and central portion of the member 44 is a spacer sleeve or cylindrical body portion 56 having an annular flanged portion 58 at its lower end that is provided with a plurality of circumferentially spaced key slots 60.

The numeral 52 represents a circular dish-like pad holding member having an upstanding annular wall 64. Fixedly secured in circumferentially spaced apertures 56 provided in the pad holding member 62, are the reduced end portions 68 of a plurality of locking lugs 10 having enlarged body portions 12 that space the annular flanged portion 58 from the dish-like pad holding member 62. Rigidly secured to the lugs 10 are substantially conical head portions 14 having annular shoulders 16 that frictionally engage the upper face of the annular flanged portion 58 when the lugs are lockably engaged in the key slots 60.

Frictionally embracing the pad holding member 62 is a buffing, polishing or sanding pad or cloth '18 one edge 80 of which is folded over the wall 64 and positioned in the member 62. A split band 82 is frictionally mounted in the member 62 to retain the cloth 18 relative to the member 62.

The numeral 84 represents an annular handle or hand grip having an inner notched portion 85 that engages a portion of the outer surface of the casing I6 and is secured thereto by a bolt or the like 86. Integrally formed with the hand grip 84, is a depending support or lug 88 which is provided with an internally threaded aperture 90. Extending upwardly through the upper wall of the casing I0, is a holding bolt 92 that receivably engages the aperture 90, as best shown in Figure 4 of the drawings.

It should be noted, that a suitable switch 94 is fixed to the outer surface of the casing I6 and is electrically connected to the motor 32 for controlling the latter.

In order to remove the pad holding member 62 from the flanged portion 53, it is merely necessary to rotate the member 62 while the sleeve 55 is fixed so that the locking lugs 10 engage the larger portions of the key slots 60.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the construction, operation and advantages of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A bufling and polishing machine comprising a lower annular housing having an eccentrically disposed opening, an upper casing integrally formed with said housing and extending upwardly therefrom, said casing being disposed about the opening and eccentrically mounted with with respect to said housing, an endless handle disposed concentric of and fixed to the housing and embracing said casing, said handle having a portion secured to the casing for bracing the casing to the housing, a bearing ring mounted in said housing and having an inner surface, a

supporting member bearing on the inner surface of said ring for rotation and solely supported by said ring, means mounted in said housing and said casing and operatively connected to said supporting member for driving said supporting member, means mounted in the housing for centering said supporting member relative to the housing, and a surface treating member detachably carried by said supporting member, said housing being open at its lower end with the surface treating member protruding therethrough. 2. The combination of claim 1 wherein said last mentioned means includes a guide fixed in said housing, said supporting member having a central recess receiving said guide.

3. A buffing and polishing machine comprising an annular housing having an eccentrically disposed opening, -a casing integrally formed with said housing and extending upwardly therefrom, said casing being disposed about the opening and eccentrically mounted with respect to said housing, an endless handle disposed concentric of and fixed to the housing and embracing said casing, said handle having a portion secured to the casing for bracing the casing to the housing, a bearing ring mounted in said housing. and having an inner surface, a supporting member bearing on the inner surface of said ring for rotation and solely supported by said ring, means mounted in said housing and said casing and operatively connected to said supporting member for driving said supporting member, means for centering said supporting member relative to the housing, and a surface treating member detachably secured to and rotatable with said supporting member, said housing having an open lower end and said surface treating member protruding through the open lower end of said housing.

4. The combination of claim 1 wherein said means for driving said supporting member includes a motor having a drive shaft, and a pinion on said drive shaft, said supporting member including a ring having an internally toothed edge engaging said pinion.

5. In a bufling and polishing machine, an annular housing including an open lower end and an upper wall having an eccentric opening therein, a cylindrical casing integrally formed with said housing about said opening and extending upwardly from the housing, a supporting member rotatably supported in said housing, means secured to the supporting member and protruding through the open end of said housing for supporting a surface treating member, power means mounted in said casing and operatively connected to the supporting member for rotatin the latter, and an endless handle secured to the upper wall of the housing and disposed concentrically of said housing and embracing said casing, said casing being disposed eccentrically of the handle and said handle having a portion secured against said casing to brace the casing to the housing.

6. In a bufl'ing and polishing machine. an annular housing having an eccentric opening therein, a cylindrical casing integrally formed with said housing about said opening, a supporting member rotatably supported in said housin power means mounted in said casing and 9118;.- atively connected to the supporting member for rotating the latter, a handle surrounding the casing and disposed concentric of said housing, said handle being secured to said housing and having a portion secured against the casing, said supporting member including a cylindrical body portion having a flanged ortion disposed exteriorly of the housing and adapted to be secured to a surface treating member, .and a supporting ring mounted in the housing upon which said supporting member is rotatably mounted.

7. The combination of claim 6 wherein said supporting member includes an annular recess, an internally toothed ring gear mounted .in vsaid recess, said power means including a drive shaft entering the housing through the opening. and a pinion on said shaft engaging the teeth of the ring gear.

8. The combination of claim 6 wherein vsaid supporting member includes a central recess, and a fixed cylindrical guide within the housing .and seated in said central recess to center the supporting member in the housing.

9. In a polishing and buifing machine, a cylindrical housing including an upper wall and a depending peripheral wall,-said upper wall :having an eccentric opening therein, an upstanding oylindrical casing integrally formed with said upper wall about said opening, a ring secured to said peripheral wall and mounted in said housing, a supporting member, a cylinder fixed to and depending from said member and having a lower flanged portion adapted to be secured to a surface treating member, said supporting member resting directly upon said ring for rotation, a cylindrical guide secured to the upper wall of said housing and positioned in said housing, said supporting member including a central recess receiving said cylindrical guide to center the supporting member within the housing, a power means mounted in said casing and operatively connected to said supporting member for rotating the supporting member, and a ring-shaped handle disposed concentric of said housing and surrounding the casing, said handle including a portion secured to and against said casing and a supporting lug secured to said upper wall.

LEE H. BURNHAM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,000,696 Schlueter Aug. 15, 1911 1,667,329 Menzel Apr. 24, 1928 1,979,527 Bissell Nov. 6, 1934 2,008,260 Reineman July 16, 1935 2,014,119 Stecker Sept. TO, 1935 2,103,444 Bauch Dec. 28, 1937 2,114,966 Myers Apr. 19, 1938 2,173,350 Bissell Sept. 19, 1939 2,289,117 Harrison July 7, 1942 2,300,138 Steele Oct. 27, 1942 2,417,620 Soderberg Mar. 18, 1947 FOREIGN PATENTS Number Country Date Great Britain Sept. 7, 1934

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