US2379997A - Polisher - Google Patents

Description

July 10, 1945. a. J. soDERBERG POLI'SHER Filed June 27, 1944 3 Sheets-Sheet 1 G. J. SODERBERG P'QLISHER Filed June 27, 1944 3 Sheets-Sheet 2 Jul w, 1945.

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G. J. SODE RBERG POLISHER July 10, 1945.

Filed June 27, 1944 3 SheetsSheet 5 Tn E INVENTOR. Gustavelsoderlaeg Patented July 10,1945

4 UNITED STATES PATENT, orr cs Y I f Gustave sati fies... N. r.

I iApplication June 27, 1944, Serial No. 542,366 40mm.- (curse-97) 1 This invention relates to portablemotorized polishing apparatus and refersmore particularly In. operation thelockin'g lug is passed vthe polishing disc, and the points on the back to such an apparatus suitable for polishing auto mobiles-and the like.

Anobject of the present invention is to provide a device primarily adapted to eliminate the great amount of motion performed by the arm.of a

. person polishing an" automobile by means of-a cloth held in the hand, and thus eliminate the consequent fatigue.

Such a-device must be light, of simple'design, have few parts, and the polismng surface must be replaceable at low cost.

oi the face piece are pressed into the rear several thicknesses of cloth forming the'bottom of the recess of the face. The polishing disc is pressed downyonto the points of the locking circle, and then the bar of the lug is passed through the hole in the locking circle and turned through 90 degrees in either g the following detailed "description when taken in connection with the accompanying drawings Another object is to provide sucha machine 7 which will serve a variety of purposes by the use of polishing discs with different kinds of'surfaces,

such as abrasive, nappy or smooth.

Other objects will become apparent from the following specification.

In accomplishing the objects of the present invention it was found desirable to provide a angles to the shaft, and the endof the shaft squared and tapped. Over the squared shaft is slipped a hollow fastener consisting of a disc with a square central hole, cylindrical sides and small electric motor with a hand grip set at right direction. The apparatus is thenready for use. The invention will appear more clearly from showing, by way of example, ments of the inventive idea...

In the drawings preferred embodi- Figure 1. is an elevation of an'apparatus em-, I

bodying the present invention.

Figure 3. F e a. v

Figure 3 is a partial section of discalong line 3-3 of Figure 2.

- Figure 4 is an elevation of the. end of the motor Figure .2 is a section along the line 2-2 of the polishing- I shaft, showing the tapped hole therein in broken 1 lines.

\ Figure5 isa'n end view of the shaft. J

a circularrim, the member being fastened on by a lockwasher and screw. engaging the threads in the shaft end. Rivets, counterpins or similar means may be also employed for securing the disc t0 thes'haft.

The rim is slittedto form arms which-are bent locking circle securely. q The,circumference of the lockingcircle bears a plurality-o1 points extending perpendicularly to the plane thereof, and the center is concave t and has an oblong hole and convexportionsjon eitherside of, the hole, the joint axis of the convex'portionsforminga cross with the axis of the hole. A circular face piece has a cloth covered face, points extending perpendicularly from the. oppositesurface, and a countersunk central hole 7 to receive the locking lug, which is a cylindrical a iece with a transverse bar at one'en slotted cloth'covered head at theother.

to permit" the passage of the locking lug.

upward'and inserted incorresponding holes in a j spring steel locking circle placed over the rim, and the arms are bent own again to fasten the Figure 14 is a perspective 49.

Figureii is another elevation of the shaft end.

Figure 'l is a perspective view of the locking lug.

Figure 8 is a section along the line 8- -8 of Figure 2. J I

Figure 9 is a vertical section of part ofthe, locking lug.

10 is a Figure 12 is a perspective View of the locking Figure 13 is-a vertical section'of the same.

,view of the face piece. Figure 15 is a'verticalsection of'the same. In the device illustrated, Figure 1 shows the" relation of the various parts. The motor it, has

Figures 4.5. and 6 and drilled and Figures 4 and 5, parallelto its axis.

' 'ofsheet steel, consists I a concentric substantially cylindrical depressed portion consisting of the side wall 28 and bottom a toggle switch I I and is mounted on a hand grip. It, in which the wires 6|, are enclosed and from whichthey lead'to a source of power. The end of, the motor shaft l9 is squared as at 22, 23 in tapped, 2D,

The fastener, Figures 1, 2, 1'0, 11,p referably of -a circular rimJ26 with .29.- In the bottom is 'a square central hole 30,

which fits on the squared end 22 0f the-shaft It. it screw 24, fitting tightly in threads 20, engages the bottom 20 adjacent the-hole 20 and causes I 'l p p ctive view of the fastener.' 8" Figure 11 is a vertical'section of thesame.

circle.

the fastener to seat firmly on surface 2|, Figures 4 and 5, which is the portion of theshaft end outside the squared portion and at the baseerably of spring steel and consists of the disc 32 Figures 1, 2, 12, 13, in which are holes 33 corre-' sponding to the arms 21 of fastener 25. It is placed overthe fastener with the arms 21 of the fastener extending through the holes 33 (Figure 2), and the arms are then bent outward and down, fastening the'lockin'g circle securely to the shaft in a plane perpendicular thereto. A central circular portion 35 of the face of the locking circle is concave and in it is formed a transverse rectangular hole 31. Perpendicular to the median line of the hole two convex portions 36 are formed in the concave portion 35. The rear surface 38 of these convex portions is of course concave; A plurality of points or teeth 34 are mounted aboutthe periphery of the disc 32, and facing outward.

Theface piece 39 Figures 1, 2, 14, 15 is a. disc 44 with inward facing teeth 45 perpendicularly arranged about its periphery, formed with a cenperpendicular thereto 'tral hole 42 and aconically sloping surface 41 around the hole to form a seat for the conical surface Figure 7 of the head 52 of the locking lug 45-. The lug consists of thehead 52, which has a slot 53 and is covered with a nappy material 54 as shown in Figure 9. The head is carried on a body 50, the other end of which carries a transverse bar 41 the same width as the body .50, the length and width of bar 41 being adapted to pass through hole 31 in locking circle 3| as shown in Figure 8. The inner surface 43 of the bar constitutes segments of 'a cone, and correfSpOndS to the rear surfaces 33 of the convex portions of the locking circle, and rests therein in operation. As-shown at 40, Figures 14 and 15,.

disc 44 including surface 4| has been parted in order to permit the introduction of the locking lug 46 into the hole 42, which is too small to permit passage of either the head 52 or bar 41. It is then welded, soldered or otherwise Joined together and the face thereof covered with nappy material.

circles 53, Figures 2, 3, with central circular holes 51 about the size of head 52 of locking lug 43 and several more circles 53 with 'central circular holes 53 'just larger than face piece 33, and a circle of nappy material 30 the same size as circles 53, all sewed together concentrically, or joined by other means.

In operation the user has but three parts to The polishing disc consists of several cloth a that all parts corresponding to the surface 38, and constitutes a cam, and on the bar being rotated a quarter turn in either direction by means of a screw driver, small coin or the like in slot 53, it will cause the entire disc 32, which is of resilient construction, to belly momentarily in the direction of the points 34, until it comes in coincidence with concave surface 38 to' which it corresponds,

when disc 32 will assume its original position. The cloth circles 55 may now bepressed down on points 34, the lug has now fastenedthe face piece to the locking circle in a manner which will be unaffected by rotation, and the polisher is ready for use.

It will be observed that the locking lug 46 and face piece 33 are not only both cloth covered, but are also recessed in the polishing disc 55 so that it is impossible for them to scratch the finish of an automobile or other article being polished. I

It is also evident that the polishing 'disc may be very cheaply manufactured and is theonly part subject to even moderate deterioration, and

are of'simple and inexpensive design. The polishing disc may be considered disposable in the truest sense, as it consists merely of sewn cloth, having no metal parts or fittings to add to its cost.

It is apparent that the specific illustrations shown above have been given by way of illustration only and not by way'of'limitation, and a that the structures above described are subject to wide variation and modification without departing from the scope or intent of the invention, all of which variations and modifications are to be included within the scope of the present invention.

What is claimed is:

- 1. A portable apparatus for polishing and the like comprising an electric motor, said motor comprising amotor shaft, a fastener firmly mounted on said shaft, said fastener comprising a rim portion and a cylindrical portion concentric with said rim portion, a locking circle firmly attached to said fastener, said locking circle comprising a resilient disc and a plurality ofpoints substantially on the periphery of said disc and extending'perpendicularly thereto. said disc comprising a central portion depressed in thereof, a polishing ing a substantially stiff disc,-said stiif disc being formed with a central hole, a lug extending through said hole, said lug comprising a head, a

manipulate. The first is the motor, to the shaft of which is firmly though removably fixed the fastener 25 and locking circle 3|. The second is the "face piece in which the locking lughas been rotatably fixed. The third is the polishingdisc. The face piece is inserted in the larger circle 55 in the face of the polishing disc andthe points 45 pressed home into theback layers of cloth 55. Bar 41 of locking lug 43 is now passed through hole 31 in looking circle 3! as shown in Figure 8.

Referring now to Figure 13, it will be seen that the back-surface oi concave portion 35 through which bar 41 has just passed is convex. The inner surface 44 of bar 41 has an opposite curve,

pressed in the a direction opposite to said points, said portion having the shape of part of a sphere, said portion further having a.rectangularhole formed therein, parts of said portion further being delocated substantially midway of hole and onopposite sides disc, a face piece. comprissaid parts being the-length of said cylindrical body and a bar extending perpendicularly to said body, said bar being adapted to pass through said rectangular hole and to engage said depressed parts by being rotated through ninety degrees whereby said polishing disc, said face piece and said lug are locked to said locking circle.

2. In a polishing apparatus according to claim 1, said rim portion comprising arms formed out of the material of said rim portion, said resilient disc having holes formedthereincorresponding to said arms, said arms extending through said holes whereby said disc is firmly joined to'said fastener, said polishingdisccomprising a polishing surface and being formed with a central cirsame directionas said points,

face to cover said central opening.

cular recess in said surface for said race piece,

said face piece further being formed with a re-' cess for said lug head said face piece and said 4 like, said apparatus comprising an electric motor,

a motor shaft carried by said motor and having a a projecting end, a polishing disc having a central opening and an outer annular nappy polishlike, said apparatus comprising an electric motor,

a motor shaft carried by said motor and having a, proiecting end, a fastener having a central .portion mounted upon said projecting end and an annular'portion, a removable polishing disc having a central opening formed therein, a substantially disc-shaped locking piece, carried by said ,annular portion of the fastenerand ening surface, and removable means having parts extending through said central opening, said re- 'movable means connecting said polishing disc to the projecting end of said motor shaft and having nappy polishing sln'iaces extending substantially flush with-said annular nappy sur 4. A, portable apparatus for polishing and the gaging one side of said polishing disc, said polishing disc, being concentric vvith said locking piece,

a face piece engaging the other side of said polishing disc, and a locking lug engaging said ingly engage said locking piece.

face piece and extending through said central opening, said locking lug being adapted on revolution through a fraction of a turn. to lockcus ravn J. son.

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