US2248382A - Grinding wheel and mounting therefor - Google Patents

Description

July 8, 1941. c. J; PHILLIPS 2 ,248,382

GRINDING WHEEL AND MOUNTING THEREFOR Filed Spt. 30, 1940 Zia/672$? Patented July 8, 1941 GRINDING WHEEL AND MOUNTING THEREFOR Charles J. Phillips, Kaukauna, Wis.

Application September 30, 1940, Serial No. 359,068

1 Claim.

Heretofore grinding wheels of this character have been provided with an arbor or shaft opening therethrough and the wheel has usually been secured to the shaft through the medium of clamping discs mounted upon the shaft and between which discs the wheel is located. The other faces of the disc contact the adjacent flat surfaces or faces of the grinding wheel, with the result that the wheel is secured to the shaft for rotation therewith, by friction.

It frequently happens that the wheel becomes cracked or broken, and by reason of the high speed of rotation of the wheel, portions or segments thereof will become dislodged from their frictional gripping means and will be thrown out by centrifugal force, often resulting in serious damage.

To overcome these difficulties and objections and to provide improved means for preventing portions of the wheel from being thrown out by centrifugal force, in the event the wheel becomes broken, is one of the objects of the present invention.

A further object is to provide improved means for strengthening and reinforcing the wheel.

To the attainment of these ends and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawing, illustrating this invention, and in which Figure 1 is a front elevation of a grinding wheel of this character constructed in accordance with the principles of this invention.

Figure 2 is a sectional view showing a grinding wheel of this character secured to the end of an arbor or shaft.

The grinding wheel I is constructed of any suitable abrasive material, such as emery or the like, and may be of any desired thickness and diameter, there being an opening I I therethrough at the diametric center thereof and through which opening the end I2 of a shaft or arbor I3 passes.

Formed integral with the wheel I0 is a projecting rib I4 which is preferably arranged concentric to the periphery of the wheel I0 and is spaced a substantial distance therefrom. The rib I4 is also arranged concentric to the axis of the disc and is preferably spaced for a substantial distance therefrom. One of these ribs I4 is arranged on both sides of the wheel I0 and are preferably in alinement with each other.

The ribs I4 are preferably of a substantial diameter in cross-section and are formed preferably from the same material as that from which the wheel I0 is constructed.

The numeral I5 designates clamping members preferably in the form of discs of diameters considerably less than the diameter of the wheel I0. In one face of each of these discs I5 is arranged an open annular groove I6. These grooves are spaced a substantial distance from the periphery of the discs I5.

In assembling the parts and to secure the wheel In to the end I2 of the shaft'I3, one of the discs is placed upon the end I2 so that its face I'l will contact a shoulder I8 on the shaft I3. The wheel II] is then placed upon the end I2 so that one of the ribs I4 will enter the groove or recess I6 and the face I9 of the disc will contact the adjacent face of the wheel.

The other disc I5 is then placed in position so that the groove or recess I6 therein will receive the rib I4 while the face 20 of the disc will contact the adjacent face of the wheel II]. A washer 2| may then be sleeved upon the shaft to contact the outer face of the outermost disc and a nut or collar 22 may be threaded upon the screw threaded end 23 of the shaft to engage the washer and to co-operate with the shoulder I8 for clamping the parts firmly together.

With this improved construction it will be manifest that the wheel III will be secured to the shaft or arbor by friction and which friction is sufi'icient under normal conditions to cause the wheel II] to turn with the. shaft.

Should it so happen that the wheel ID of this construction should become broken, it will be manifest that none of the broken parts can be thrown outwardly by centrifugal force by reason of the fact that the ribs I4 engaging and being seated in the grooves or recesses I6, and. which ribs extend entirely around the face of the wheel, will hold the broken parts in assembled relation.

Furthermore, the ribs I4 serve as a means for reinforcing or strengthening the wheel. Obviously any other means may be provided for fastening the disc I5 to the shaft.

While the preferred form of the invention has been herein shown and described, it is to be understood that various changes may be made in the details of construction and in the combination and arrangement of the several parts, within the scope of the claim, without departing from the spirit of this invention.

What is claimed as new is:

and between which discs the wheel is disposed, 10

there being an annular groove in the faces of the respective discs which are adjacent the wheel for receiving said ribs, the remaining portions of said faces of the discs being flat, and means for clamping the flat surfaces of the discs in contact with the fiat faces of said wheel, whereby the entire inner faces of the discs will be held in contact with the proximate faces of the wheel.

CHARLES J. PHILLIPS.

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