US1947054A - Abrading and polishing device - Google Patents

Description

Feb. 13, 1934. w. E. McREYNoLDs ABRADING AND POLISHING DEVICE vFiled sept. 12, 1931 E WN R ff INVENTOR )lZLam E Mcfaynolds BY E A'r Patented Feb. idg 1934 William E. Mclteynolds, Detroit, Mich., assigner to Hugh E. Woodard, Detroit, Mich..

Application September l2, 193i Y Serial N0. 562,437

e claims. (ci. si-is'n My invention relates to improvements in abrading and polishing devices and more particularly to hand holders for abrading and polishing agents. 1

In sanding or polishing surfaces preparatory to applying varnish, lacquenwax or other fin ishes thereto, it is the practice for the workman to rub the surface by hand with abrading or polishing paper or cloth. It is unsatisfactory to use an ordinary block as a backing for the paper due to irregularities and ,undulations in the surface such as are present particularly in the surface of metalautomobile bodies, orexample..

The use of a hard block backing will result in finishing of the high spots only and the pitted portions sometimes invisible to the eyevremain unfinished. Hand polishing or abrading with no' backing for the paper or cloth is hard on the worlzmans hand, diicult to accomplish and results in waste of the paper or cloth used and is generally very unsatisfactory and impractical.

My invention is. directed to overcoming these difficulties by the provision of an improved hand abrading and polishing device for backing the paper or cloth or other material used, containing it in a readily accessible position, and providing a ready method of positioning the abrad-a ing and polishing material with respect to the working surface of the device. My invention contemplates a device wherein thematerial is readilyan'd easily renewed from. a packed supply and is positively locked and retained' in working position. The hand device of my invention prevents waste oi material and insures the utilizing oi all or the abrading and polishing material.

By the use of this device .all oi the surface may be abraded or polished regardless of irreg-i ularities in the surface and all of the high and low spots will be reached. The use oi the device also facilitates working about ordinarily inconvenient corners, recesses and edges adja-f cent moldings, for example. The device is simple, of few parts, easy to use and adjust and free from necessity of maintenance and repair.

lt is an object of my invention to provide an improved hand abrading and polishing device.

Another object of my invention is to provide an improved hand holder for abrading and pol= lening agents.

Another object is to provide an improved hand abrading and polishing device adapted to contain a supply of abrading and polishing material and having means to readily feed such material to the working surface of the device.

Another object is to provide an improved material holder for abrading and polishing materials which will utilize 'all of the material used.

AA. further object of my invention is to provide an improved hand abrading and polishing device of simple construction which is easy to operate and adjust and has few working parts, requiring no maintenance and repair and which is highly emcient in use.

Further objects and advantages will readily become apparent throughout a reading of the following detailed description and accompanying drawing, in which:

Figure 1 is a perspective view of the improved hand abrading and polishing device of my invention, shown with the cover and material clamp in open position, a portion of the material being broken away to illustrate certain details more clearly.

Fig. 2 is a side elevation ofthe device oi my invention as it appears when ready for use.

Fig. 3 is a detailed cross-sectional view, taken on the line 3 3 of Fig. 2, and

Fig. d is a longitudinal cross-sectional view of the device of my invention.

Referring nowv to the drawing in detail in which lilre parts are designated by like numerals throughout the several views, the body 6 of the device of my invention is made oi metal or other suitable material and is of box-like construction, open at the top, and has a pair of sides 7, a front end 8, 'back end 9 and bottom i0. lThe sides 'l are wider at their central portion than at their ends, tapering from the center to the ends where they are as narrow as the front and rear ends of the body respectively. A semi-cylindrical material containing trough il extends transversely of the body 6 at its central portion and is fixed to the sides l of the body at their -wide central portion by soldering, welding or in any other suitable manner, as clearly shown in the drawing. The

forward edge l2 of the material containing trough 1l is rolled to provide a smooth surface over which the material may be drawn. The abrading or polishing material i3 used is supplied in the form oi rolls preferably of a width nearly equal to the inside cross dimension of the body 6 so that the roll i3 will rit closely between the sides 7.

A curved spring clip le of suitable spring material is mounted by soldering, welding or otherwise on the upper side of the bottom l0 at the rear portion of the box 6 as shown in the drawing. The clip lll is designed to conform to the upper surface ci the roll oi' material 13 and be urged downwardly thereagainst by spring tension to retain the material in place, act as a brake and prevent accidental unrolling. The forward end of the clipld is curled at 15 to facilitate drawing of the material between its iront end and the edge 12 oi the trough il. l

A cover i6 of metal is hinged at 1'7 to the rear end 9 ci thebody 6 or" the device. This cover is or" rounded contour to extend'over the roll of material i3, and the sides of the cover are designed to snugly nt over the sides 'l of the body when the cover is closed as shown in Figs. 2 and lil@ 4. The slight springing of the sides of the cover is relied upon to retain the cover in closed position, although any other suitable means such as snap joints and recesses may be employed if de sired. The external surface of the cover 16 is rounded somewhat to t the palm of the users hand and. is of a shape and size to provide a good clamping and pressing surface.

The forward transverse edge of the cover 16 is rolled to form a bead 18 adapted to lie close to the upper transverse edge of the front end 8 of the body 6, and also to extend below the top edge of the front end 8 so as to clamp thc material 13 therebetween when the cover is in closed position, thus preventing unrolling of the material when the cover is clamped down as shown in Fig. 4. The upper edge of the front end 8 is folded over to provide a smooth surface for clamping the material 13 between this edge and the bead 18 of the cover without cutting or otherwise damaging the material. It is apparent that when the cover 16 is clamped down over the body 6 the material 13 will be securely locked between the front end 8 of the body and the front end of the cover.

A base for resiliently backing the material 13 is provided and includes a vulcanized rubber or felt block-19 secured to the bottom 10 of the body 6 by bolts 20 or other suitable fastening devices. The front end 21 of the block 19 projects forwardly of the body 6 and extends upwardly to the top edge of the front end 8 of the body and is gradually beveled and rounded from this point down to the front edge of the bottom of the block 19 as shown in the drawing. The rear end of the block 19 extends beyond the rear end 9 of the body 6 and is rounded.

A layer of rubber 23 is vulcanized, cemented. or otherwise secured to the bottom of the block y19 covering the bolt heads 21.

A pad of sponge rubber 24 or other suitable flexible material is secured to the bottom of the layer 23 of rubber by vulcanizing, cementing or in some other suitablemanner. The front and rear ends of the pad of material 24 are rounded to facilitate passage .of the material 13 used in abrading and polishing.

A transversely extending spring clamp 25 is suitably hinged to the rear outside portion of the body 6 at' one side and is adapted to extend. across the back 9 and be clamped tightly thereagainst. The outer end 26 of the hinged clamp 25 is bent back to conform to one of the sides 7 and has a pin 27 fixed in this end. An aperture or recess 28 is formed in the side 7 to receive the pin 27 whereby the hinged spring clamp 25 may be snapped into closed position against the back 9 of the body.

As illustrated in the drawing, the rollof abrading or polishing material 13 is placed in the trough 11 and clamped in place by the spring clip 14. The material 13 is then extended through the `opening between the edge15 of the clip and lip 12 of the trough and thence over the front end of the block 19 around the bottom surface of the resilient pad 24. and .over theback end of the pad 24 and block 19.

The cover 16 is then clamped shut and the material 13 is thereby clamped against further unrolling by the bead 18 of the cover. The

hinged vclip 25 is swung into open position by' releasing the pin 27 from the aperture 28 and the abrading or polishing material 13 is clamped .edge of Said cover and adapted to `clamp the material against the front edge of the holder tightly against the back 9 of the body by inserting it between the back 9 and clamp 25, closing the clamp and locking the pin 27 in position. This has a snap lock action and it will be understood that the material is first drawn tightly over the pad 24 of the device to assure smoothness.

The surplus material 13 may be torn along the upper transverse edge of the clip which may be a cutter edge if desired. to present a neat appearance. When the abrasive or polishing material on the working surface of the device requires renewal the material may be advanced by raising the cover 16, opening the hinged spring clamp 25 and drawing the material forward until the front edge of the exposed used portion is slightly beyond the rear edge of the pad, after which the clamp 25 is snapped shut and the surplus used portion (shown in Fig. 4) may be torn off.

Although certain. forms of -the invention have been described and illustrated in detail, it will be apparent to those skilled in the art that various modifications may be made without departing from the scope of the appended claims.

I claim: I

1. An abrading and polishing device including a flexible pad, a backing for said pad, a container secured to said backing, a roll of abrasive or ioo i polishing material rotatably disposed in said container, spring means for maintaining said roll in position, a cover hinged to said container and adapted to clamp the abrasive and polishing material against Ithe forward edgeeof the container to prevent unrolling of the material when the cover is closed and fa spring clamp hinged at the rear of the container to releasablysecure one end of the abrasive and polishing material at the rear portion of the pad after it'has been extended over the rubbing surface of the pad.

2. An abradi'ng and polishing device including 115 a flexible pad, a backing for'said pad, a container secured to said backing, a roll receiving trough fixed in said container, a spring clip fixed -in said container extending over the roll receiving trough, a roll of abrasive or polishing material disposed'in said trough beneath the spring clip being retained in position thereby, a portion of said abrasive and polishing material being extended over the front end of said container and over the face of said pad, a hinged clamp fixed at the rear end of said container for releasably securing the abrasive or polishing material and a cover hinged on said container and adapted to clamp the abrasive and polishing material against the forward end of the container when the cover is closed to prevent unrolling of the material.

3. An abrading and polishing device including a flexible pad, a holder for said pad forming a. roll housing, a roll of abrading or polishing material in said housing hav'ng a portion of said material extended over the ace of said pad and means for clamping said material tightly against the face o1' said pad, said means including a. cover hinged on the holder, a bead formed at the front when the cover is closed. and a transversely extending hinged clamp fixed at the rear end of said holder for clamping the material against said end.

WILLIAM E. MCREYNOLDS.

Images