US1616889A - Wheel for grinding heads - Google Patents

Description

I v I 1616 889 CRANE I WHEEL FOR QRINDING HEADS Filed Aug. 14, 1925 gmmtoz LESLIE Carina; or nn'rrann, VERMONT, assrenon or onn-narir '10 r. a. rarer:

MANUFACTURING coMPAnY, or RUTLAND, VERMONT, a conroaa'rron or VER- MONT.

wnnnn non GRINDING rinans.

Application filed August 14, 1925. Serial no. 50,22o.

This invention relates to certain new and useful improvements in wheels for grinding heads for surfacing stone, such as granite, marble, or other stones, the object being to provide a wheel which is formed of a series of concentrically arranged rings having projections on their outer edges and depressions on their inner edges to cause the abrasion material to be forced under the rings more rapidly, thereby reducing the time required in bringing the granite surface to the required smoothness for receiving the gloss.

Another object of my invention is to provide a dressing wheel which is exceedingly simple and cheap in construction and one which can be used in connection with any of the well known surfacing machines now in use.

A still further object ofthe invention is to provide'a surfacing wheel which can be manufactured very cheaply and one which is very strong and durable, the rings being secured to bars in order to hold the same in the proper position in respect to one another.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined in the appended claims.

In the drawings,

Figure-1 is an inverted plan view of a dressing wheel constructed in accordance with my invention;

Figure 2 is a top plan View of the same; and

Figure 3 is a detail perspective view of a portion of the ring.

In the embodiment of my invention as herein shown, the dressing wheel is formed of .a plurality of concentrically arranged metal rings 1, 2, 3, i, 5, 6, 7 and 8, but it is, of course, understood that the number of rings can be increased or decreased without departing from the spirit of my invention.

These rings are fixed to bars 9' and 10 to which is adjustably connected a head 11 connecting the same to the driving spindle of a dressing machine. In order to counter-balance the head, the outer rings 1, 2 and 3 have secured to their upper faces bars 12 and 13.

The rings 3 to 8 are provided with oppositely disposedprojections 14 forming depressions 15, the projection of the inner ring extending into the depression of the adjacent ring and these depressions and projections are preferably formed under the bars 9 and 10, but it'is, of course, understood that while I have only shown each ring with two projections and two depressions, they can be increased or decreased and instead of being arranged opposite to each other, they could be staggeredly arranged without departing from the spirit of my invention; As the rings 3 to 8 respectively are constructed identically alike except ac cording to size, the description of one ring will be suflicient for all as these rings of various sizes are arranged concentrically with the projections and depressions in the posi tion as clearly shown, the outer ring 1 being formed continuous without a projection or depression and the ring 2 is provided with depressions to receive the projections of the adjacent ring.

When the wheel is in operation for surfacing material which has a hard, crystalline formation, the abrasion material which is used in connection with the ring, is forced by the depressions and projections under the grinding members formed by the rings as these concentric rings form grinding members with flat faces so that the abrasion material is forced rapidly from one ring to the other under the grinding face thereof so as to bring the granite surface to the required smoothness in a very short length of time.

While I have shown in the drawing and specification a grinding wheel constructed of concentric rings forming grinding mem bers arranged in a particular manner, I do not wish to limit myself to details of constructions and the manner, of connecting these rings together to form a grinding head or, Wheel as I am aware that various means can be employed without departing from the spirit of my invention.

What I claim is 1. A dressing wheel formed of a series of concentrically arranged rings, each ring having a radial projection on one edge and a depression on the other edge thereof.

2. A dressing wheel formed of a series of concentrically arranged rings, each ring having a depression on one edge thereof and a radial projection upon the other edge thereof, the projection of one ring extending into the depression of the adjacent ring.

3. A dressing wheel formed of a series of concentrically arranged rings forming gether by bars, each ring being proyided 10 grinding members, each ring being provided with a depression and a radial projection, With radial projections and depressions, the the projection of one ring extending into projections and depressions in each ring bethe depression of the adjacent ring'and aring disposed radially opposite, the projecranged under the bars for connecting said tions of each ring projecting into the derings together. i I 15 pression of the adjacent ring. In testimony WhereofIhereunto afiix my 4. A dressing Wheel formed of a series of signature. concentrically arranged rings connected to- LESLIE CRANE.

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