US1667076A - Polishing wheel - Google Patents

Description

April 24, 1928.

D.-- F. MICGOVERN .POLISHING WHEEL Filed Oct. 1925 llllll [ill ll1l'llll Maw Patented Apr. 24, 1928.

DANIEL FREDERICK MCGOVERN, OF MONTPELIER, VERMONT.

POLISHING WHEEL.

Application filed October 16, 1925. Serial No. 82.868.

This invention relates to polishing wheels, and involves a novel flange arrangement and relation designed to insure uniform and adequate distribution of the abrasive over the entire working face of the wheel.

The construction and operation of my wheel, together with a selected embodiment thereof which well illustrates the principles lIlVOlVtKl'llIltl is itself a form found satislactory 1n use, 1s described and shown in the accompanying specification and drawings,

and the characteristic features of novelty are particularl pointed out in the appended claims. Throughout the specification and drawings, like reference characters are corespondingly applied, and in the drawings:

Fig. l'is a face view of a polishin wheel in accordance with my invention, ant

Fig. 2 is a side elevation thereof.

I have indicated generally at 1 the plate or disc of the polishing wheel, at 2 the central mud discharge opening thereof, and at 3 the attaching lugs which receive the driving shaft.

According to ,my invention the working face of the disc 1 is provided with a plural ity of segmental flanges which, as here shown, are arranged in the form of four definite and distinct sector shaped flange sets,

indicated enerally by the reference characters A, la, C and I) in Fig. 1, although obviously a greater or lesser number of flange sets may be used. These flange sets a re symmetrically distributed over the working face of the wheel between intersecting diameters F-F and (}G, which diameters, in the embodiment herein illustrated, intersect each other at right angles.

The approximate centers A, B, C and D, respectively, of the individual flange sets are all eccentric to the axis of rotation of. the wheel, the flanges of each succeeding set being centered on a diameter intersecting that on which the preceding set is centered, i. e.. the approximate center B of the flange set B, for example, is located substantially on the diameter VV which is the vertical median line of the disc, and the approximate center A of the preceding flange set A is located substantially on the intersecting diameter HH which is the horizontal median line of the disc. Where four flange sets are employed, the approximate centers of substantiall oppositely disposed sets, as the centers X and C for the sets A and G, are IOCated 0n the same diameter H--H and the it to the next succeeding set.

tended beyond the diameter on which the included flanges of said set terminates and therefore overla s the tail end of the outermost flange of t 10 next preceding flange set so as to provide therewith a series of abrasive inta (e openings 0 spaced equidistantly about the periphery of the disc. As here shown, the outermost flanges a, c of the flange sets A, C are extended beyond the diameter F-F and terminate at opposite sides of the disc on the horizontal median line HH, and the outermost flanges b, (l of the flange sets I3, D extend beyond the diameter G-G and terminate at opposite sides of the disc on the vertical median line V V. The eccentric centering of the individual flange sets brings the leading ends of the included flanges between the channels defined by the flanges of the preceding set so that the flanges do not track each other. Preferably the tail ends of all thcflanges of a set terminate in the same plane.

My arrangement and relation of flanges enables me to secure an adequate intake of abrasive, the wheel in the embodiment shown having four equidistantly spaced abrasive intake openings about its periphery, and a uniform distribution of such abrasive over the entire working face of the whcel,the outermost or leader flanges of each flange set drawing in and delivering the abrasive to the included flanges of each flange set, and the included flanges feeding the abrasive for their entire length and then delivering This action is continuous and progressive, and the abrasive isnot only thoroughly broken up in its passage towards the center of the wheel, but is uniformly distributed over the entire working face of the wheel. The centrifugal force developed by the rapidly rotating wheel returns the abrasive outwardly toward resorted to within the spirit and scope ofmy invention as defined by the appended claims.

What I therefore claim and desire to secure by Letters Patent is:

1. A polishing wheel comprising a plate havin on its working face a plurality of sets 0 arcuate flanges disposed in symmetrically arranged groups lying between intersecting diameters of the plate, each flange set being centered on a diameter intersecting that of the preceding flange set, the leading ends of the outermost flanges of a pair of substantially oppositely disposed flange sets starting at substantially the horizontal or vertical median line of the plate and in advance of the tail ends of the flanges of the next preceding flan 'e' set.

2. A polishing wheel comprising a plate havin on its working face a plurality of sets 0 arcuate flanges disposed in symmetrically arranged groups lying between intersectln diameters of the plate, each' flangeset bemg centered on a diameter intersecting that of the preceding flange set, the leading ends of the outermost flanges of a pair of substantially oppositely disposed flange sets starting at substantially the horizontal or vertical median line of the plate and in advance of the tail ends of the flanges of the next preceding flange set, and the centers of said oppositely disposed sets being located on the same diameter but on opposite sides of the center of the plate;

- In testimony whereof I aflix my signature.

DANIEL FREDERICK MCGOVERN.

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