US2107411A - Sanding wheel - Google Patents

Description

SANDING WHEEL Filed March 11, 1956 Patented Feb. s, 1938 I r 2,107,411

omrso STATES PATENT OFFIQE,

SANDING WHEEL Ernest Dunford, St. Louis, Mo, assignor to Landis Machine Company, St. Louis, Mo., a corporation of Missouri Application March 11, 1936, Serial No. 68,202 8 Claims. (01. 51-194) The invention relates to sanding wheels of the sponding frustro-conical projection 1 on the type commonly used on shoe finishers, and conwheel. Collar 9 includes a sleeve I3 extending sists in novel construction of the body of the through the wheel. wheel and the means for mounting the same on a A movable collar 14 includes a sleeve l5 receiv- 5 shaft. ing sleeve l3 on collar 9 and slidable along the 5 Wheels. of the type referred to are usually made same. A flange 16 on collar M has a frustroin two segments hinged to each other to swing conical recess l'l corresponding to recess 12 and transversely of the shaft to permit application collar 9 and disposed to receive the corresponding and removal of a strip of sandpaper to their outer projection l on the wheel body.

10 peripheral surfaces. The main object of the Obviously movement of collar I4 towards collar 10 present invention is to facilitate the securing and 9 results in clamping the wheel segments between releasing of such wheel sections in and from their the collars, the interengaging faces of projection operating relation to each other on the shaft 1 and recesses 12 and ll serving to center the upon which they are mounted. segments and to force them tightly against each 15 Another object of the invention is to eliminate other. 15 eccentricity and play in the assembled device Means for effecting such movement of the colwhich frequently arises in the ordinary wheel lars is provided by a cam slot 18 in sleeve 15 and from the loosening of the screws securing the a corresponding stud l9 threaded into sleeve 13. wooden wheel segments to the elements which Arrow A (Fi u e indicates the normal direcmount them on the shaft. tion of rotation of the 'shaft whereby collar $1 20 20 Another object of the invention is to protect and stud l9 are rotated to thrust collar 14 tothe elements, which secure the wheel segments wards collar 9. A pin 20 on collar I4 projects together, from dirt, sand, and other debris. into a recess therefor in segment 2 and positive- These and other detail objects which will be ly rotates the wheel irrespective of the frictional apparent from the following description may be g p O e Wheel y the Opposed Collars- 25 obtained from the structure shown in the ac- When the sandpaper is to be changed, or the companying drawing, in whichwheel opened up for any other reason, the same Figure 1 is, in part, an elevation and, in part, may be rotated in the opposite direction thereby a section through a sanding wheel and the means rotating collar 19 relative to collar 9 and releasfor mounting it on the shaft which is also illusing the grip on. the wheel. 30

trated, the parts being shown in released position. When the wheel is released and the split por- Figure 2 is, in part, a side elevation and, in tion is opposite stud 19, the latter may be repart, a vertical section taken on the line 2-2 of moved from collar 9 with a screwdriver and the Figure 1. two collars completely disassembled from each Figure 3 is a section and view corresponding to other and the wheel removed from the device for 5 Figure 1 but showing the parts in an operating replacement or reversal. position. When the parts are assembled as shown in The body of the wheel comprises two wooden Figure 3, the cam slot and pin constituting the segments 1 and 2 hinged to each other at 3 and operating parts of the mechanism are located in covered by a layer 4 of felt or similar cushioning a tight chamber formed by the annular opening 40 material over which a strip 5 of sandpaper or 2| through the Wheel y and y the adjacent emery cloth is applied, the ends 6 of the strip portions of the collars. being turned inwardly and gripped between the The device is simple, economical, and effective abutting edges of segments I and 2. The above for the intended purpo a Stated in the bj t described construction is that usually found in of the invention set forth in the introductory 45 wheels of this type. portion of the specification. Obviously details of On the annular faces of segments l and 2 are the structure may be varied without departing bosses l which, when the segments are moved from the spirit of the invention and the exclusive towards each other, form frustro-conical projecuse of all modifications as come within the scope tions extending in opposite directions from the of the claims is contemplated. 50

W I claim:

Mounted upon the power shaft 8 is a fixed col- 1. In a device of the class described, segments lar 9 e d in place On the Shaft by set screws movable towards each other to form a sanding 0 d including a ge ll having a frustrowheel, segment clamping collars at opposite an- 001110941 recess 12 disposed to receive the correnular faces of said segments and having over- 55 movable towards each other to form a sanding Wheel with an opening extending axially therethrough, collars engaging the annular faces of said wheel respectively and provided with sleeves extendng inwardly of said opening, said sleeves telescoping with each other and having corresponding interior peripheries for fitting over a power shaft, a radial stud on the inner of said sleeves, there being a slot through the other of said sleeves inclined circumferentially and longitudinally thereof and receiving said stud whereby relative rotation of said collars causes said pin and slot to cam said collars towards each other to grip said segments between them.

- 3. A structure as described in claim 2 in which the annular faces of said wheel include frustroconical bosses and the opposing faces of said collars include correspondingly shaped recesses for receiving said bosses and drawing said segments more tightly together radially of the device as said collars are cammed towards each other.

4. In combination,.an operating shaft, spaced collars each fittingon said shaft inermediate its ends, segments between said collars movable towards each other to form a sanding Wheel with an axial opening receiving said shaft and closed at its ends around said shaft by said collars, and

means inthe closed space'between said collars and between said shaft and the periphery of said opening for drawing said collars towards each other when rotated relatively, there being a cone nection between one ofsaid wheel segments and one of said collars for positively rotating the latter by rotation of said segment about saidshaft.

5. In combination, an operating shaft, a collar having a cylindrical sleeve fitting over said shaft and having a flange extending radially from said sleeve, another collar having a cylindrical sleeve slidably fitting over said first-mentioned sleeve and having a flange extending radially of its sleeve, segments between said flanges movable towards each other to form a sanding wheel with an axial opening receiving said sleeves and closed at its ends around said sleeves by said flanges, a cam stud on one of said sleeves and a cam slot on the other of said sleeves for drawing said collars together when rotated relatively, said cam element being closed off from dirt due to operation of the wheel by said shaft, collar flanges and the inner periphery of said wheel axial opening, there being a connection between one of said wheel segments and one of said collars for positively rotating the latter by rotation of said segment about said shaft.

6. In a sanding wheel unit arranged for application to a through shaft, a pair of sleeves each slidable over the shaft and arranged for telescoping engagement with each other independently of their relatively axial rotation, means on said sleeves functioning independently of the shaft to which they are. applied for moving the sleeves axiallyof each other when they are rotated relative to each other, there being radially extending collars on said sleeves, and sanding wheel forming segments mounted on the outer of said sleeves and arranged to be gripped between said collars when said sleeves are moved towards each other. a

7. In a sanding wheel unit arranged for, application to a through shaft, a pair of sleeves each slidable over the'shaft and arranged for telescoping engagement with each other independently of their relatively axial rotation, one of said sleeves having a slot inclined longitudinally thereof and the other of said sleeves having a 'pin projecting into said slot whereby said sleeves may be moved axially of each other when they are rotated relative to each otherand independently of the rotation of the shaft, there being radially extending collars on said sleeves, and sanding wheel forming segments mounted on the outer of said sleeves and arranged to be gripped between said collars when said sleeves are moved towards each other.

8., In combination, a shaft, an annular sleevelike member slidably receiving said shaft and including a radially extending collar, another annular element slidably receiving said shaft and including a radially extending collar and a cylindrical part slidably receiving said member, said collars having opposing faces, a 'segmentalsa nding wheel surrounding said part and arranged to be gripped between said collar faces,--and means on said member and part for moving them axially when they are rotated relative-to each

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