US1554861A - Grinding-wheel bearing disk - Google Patents

Description

Patented Sept. ZZ, 1925.

PATENT orrlcEf.

ALBERT M. LEVERIGH, or MILWAUKEE, wIsooNsIn.

` enrnnINe-wnnnn `BEARING DISK.

Application led September 14, 1923i. 'Serial No. 662,718.

To all whom t may concern.'

Be it known that I, ALBERT M. Lnvrinron, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of lVisconsin, have invented new and useful Improvements in Grinding-dieci Bearing Disks, of which the following is a specification.

This invention relates to grinding wheels, and more particularly to grinding wheel flanges, and an object of the invention is to provide a flange structure which will prevent the flying of parts of a grinding wheel in case the wheel is broken.

It is a well known fact, that frequently during the use of a grinding wheel it' will break and with the present construction of flanges or disks used in bracing the Wheel and connecting it to the driving shaft, the pieces broken from the wheel are permitted to fly, during the rotation of the wheel often striking` workmen and injuring them.l and it is an object of the present invention to provide a novel, simple construction of fiange which will prevent the flying of the particles of the grinding wheel in that gripping members are carried by the flange which will move into tight binding or gripping engagement with a portion of the grinding wheel in case the latter portion moves outwardly from the axis of the wheel.

Other objects of the invention will appear in the following detailed description taken in connection with the accompanying drawing wherein Fig. 1 is across section through a grinding wheel showing the improved flange associated therewith.

Fig. 2 is an enlarged detail section through a part of the flange. y Fig. 3 is a section through a modified form of flange showing it applied.

Fig. 4L is a detail end view ofthe gripping member used in the modified form of the invention.

Fig. 5 is a` detail side elevation of the grip ping member used in the modified form.

Referring more particularly to the drawings, a grinding wheel 1 of any approved type, such as an emery wheel is shown which has clamped thereto the flanges or bearing disks 2 and 3. The bearing disks 2 and 3 are connected to the wheel 1 in the usual manner, preferably by means of screws, and

they are also provided with the usual form of central bearing opening 4l. The disk 2 is ofl the approved type,` commonly inuse having its flat inner surface bearing against the grinding wheel l@ The flange 3,"however, is provided with cutout portions 5 at circumferentially spaced points, extending? inwardlyfrom its innerl surface, inwardlylof the perimeter of the disk. The'innerwalls 7 kof the recesses 5 incline inwardly towards the inner face'of the rdi'sk` asthey extend outwardly towards its.perimeterlasiclearly shown in Fig l of the drawings. Gripping rollers 8 are mounted orv placed inthe recesses 5 and normally rest in the innerldeep portion of the recesses. The rollers 8 are substantially of the same diameter as the depth of the deep portions ofthe recesses 5 so that they will just engage the side of the grinding wheel l. In case the grinding wheel breaks and a segment thereof loosens, the rotation of the grinding wheelwill cause the broken loosen section to move outwardly from the center of the wheel. On such outward movement, it will move the roller 8 outwardly therewith and the centrifugal force created by the rotation of the wheel will cause a tight wedging action of the rollers 8 against the broken part of the grinding wheel and wedge it tightly against the flange 2 thereby preventing the broken part from flying off.

In Figs. 3 to 5 of the drawings a modified forni of the invention is shown in which the flange or disk 3 is provided with cut out portions 5 which are triangular shaped in cross section and which have tip-standing ridges 10 formed therein which engage in the longitudinally extending grooves 11 in the gripping blocks 12.` The vgripping blocks 12 replace the gripping rollers 8 and they are substantially frusto-pyramidal in shape being triangular in end elevation and substantially frustotriangular in side elevation. The blocks l2 normally rest inwardly in the inner deep portions of the cut out portions 5 and move outwardly into gripping engagement with the grinding wheel in case a portion of the wheel breaks and moves outwardly in the same manner in which the gripping rollers 8 cooperate to prevent the broken part of the grinding wheel from flying outwardly.

It is, of course, to be understood that the invention may be constructed in other manners and the parts associated in different CII relations and, therefore, I do not desire to he limited in any manner except as set forth in the claims hereunto appended.

y Having thus described my invention what I claim is l. As a new article of .manufactura a bearing disk, for grinding wheels provided with ay plurality of recesses in its inner face, said recesses having their bottoms inclining outwardly towards the inner face as they extendtoward the periphery of the disk, and grinding wheel gripping members movably mounted in said recesses.

2. The combination with a grinding wheel, of a bearing flange having recesses in its inner face', said recesses having their bottoms inclined; outwardly and gripping memhers'movably mounted in said recesses.

3. IThe combination with a grinding wheel, of a. bearing disk therefor provided with" a plurality of recesses extending in* Ywvardly from its inner face and having their bottoms inclining inwardly towards the inner face of the disk as they extend outwardly towards the periphery of the disk, gripping rollers mounted in said recesses and normally out of gripping engagement with the grinding wheel, said rollers adapted to be kforced into gripping engagement upon movement of any portion of the grinding wheel outwardly from its axis.

4. The combination with a grinding wheel, of a bearing disk therefore, provided with a plurality of recesses extending inwardly from its inner face and having their bottoms inclining inwardly towards the inne-r face of the disk as they extend outwardly towards the periphery of the disk, gripping blocks mounted insaid recesses and normally out of gripping engagement with the grinding wheel, said blocks adapted to be forced into movement of any portion ot' the grinding wheel outwardly from its axis.

In testimony whereof I affix my signature.

, ALBERT M. LEVERICH.

gripping engagement upony

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