US1954263A - Polishing or buffing wheel - Google Patents

Description

D. H. ROSS E1' AL POLISHING OR BUFFING WHEEL April 10, 1934.

Filed Aug. '7, 1951 @hd WE@ ATTORNEYS Patented Apr. 3, 1934 Lamer."y

Due to the Printersfflrror the wrong Issue date appearsl on the printed Specification. yThe corr-ect date is vApril matmgrenuon.

PATENT OFFICE STATES y 954,263 roLIsHING on BUFFING WHEEL Don H. Ross and Lawrence J. Nook, Kalamazoo,

Mich. 4

Application August 7, 1931, Serial No. 555,781

4 Claims.

The main objects of this invention are:

vreceiving and retaining a substantial quantity of abradant or polishing powder.

Fourth, to provide a polishing or buiiing wheel having these advantages which is very durable.

' Objectsrelating'to details and economies of our invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A structure which is a preferred embodiment of our invention is illustrated in the accompanying drawing, in which:

Fig. 1 is a side perspective view of our improved polishing or bufling unit. v

Fig. 2 is a perspective view showing a plurality of the plies of material from which our improved polishing or bufling wheel is built up.

Fig. 3 is an enlarged fragmentary section on line 3-3 of Fig. 1. y

Fig. 4 is' an enlarged fragmentary section illustrating a slight modification of our invention.

Fig. 5 is a fragmentary view" partially in section illustrating one adaptation or embodiment of our improvements in which several units are employed as in a bufiing wheel.

Our improved polishing or bufhng wheel or unit 1 is made up of a plurality of sheets or disks of craped or crumpled parchmentized paper 2, pref-v erably kraft paper, and a plurality'of disks or sheets of cloth 3 preferably of muslin or the like. These plies are arranged in superimposed relation and bound together in supporting contact, the one with the other and to form arelatively stiff unit by means of the stitching indicated at 4, the stitching being preferably a plurality of concentric rows of stitching or a spiral row of stitching extending from the center to a point adjacent the periphery of the unit. The stitches, as indicated in Figs. 3 and 4, are through stitches; that is, they extend from side to side and bind the plies firmly togetherso that they provide, as stated, a relatively stiff solid unit with a plurality of the plies of the paperand a plurality of the plies of the cloth..

In 3, are shown as arranged in al- In Fig. 4, the two sheets of cloth are shown disposed side by side, the paper, however, being in terposed therewith so as to form a substantial part of the body of the wheel.

The paper is, as stated, parchmentized and crumpled or craped and is preferably treated with glycerine during the process of manufacture so that it is relatively soft and does not become dry and brittle although the parchmentizing not only adds greatly to the strength of the paper but also to its durability. The glycerine treatment, however, is of advantage especially where very fine work is required. The pockets resulting from the crumpling or craping serve as eiective retainers for the abradant or polishing material as the case may be. y

In building up the units, the cloth plies are laid so that the threads thereof run in different directions; that is, they are disposed relative to each other so that they run in all directions; that is,

. rections and are as uniformly positioned as is practical.

The paper plies are also laid so that the grain n" runs in various directions, one sheet being turned so that its grain runs in a direction different from that of the adjacent sheets.

The sewing is spaced according to the results desired; that is, the closer the stitches the stiffer and more solid the unit will be.

The parchmentized and craped or crumpled paper has the effect of presenting a roughened surface to the work and also to form pockets to receive the polishing material. While the wheel is very eiiicient, it also has a rapid cutting action, in the sense of rapid polishing. It does not score or scratch the work and it is found that cloth and paper of the character described wear uniformly.

In Fig. 5, we illustrate a plurality of the units 1 clamped upon the arbor 5 between supporting collars 6 and '7. The polishing or buiiing wheel may be built up to the desired vthickness and for certain work the 'single units may be employed.

The wheels may, if desired, be of very considerable diameter.

The stitching might be otherwise disposed `but Having thus described our invention. what,A we

los i claim as new and desire to secure by Letters Patent, is:

1. A polishing or bufiing wheel unit comprising a plurality of plies of cloth andaI plurality of plies of crumpled paper disposed in interspersed relation and bound together in supporting contact.

2. Bufiing or polishing wheel comprising disks of paper and cloth in an arrangement of alternation whereby each disk of paper is contacted by a disk of cloth, the cloth disks being supported by the paper so that the ends of the threads of the cloth stand substantially erect in the periphery of the wheel, the cloth disks being angularly displaced to present the thread ends with substantially uniform density around the entire circumference, adjacent the edges of the paper disks, the cloth disks performing a wicklike function in feeding abrasive to the cutting edges of the paper disks.

3. Buing or polishing wheel comprising disks of crlnkly paper andcloth in an arrangement of alternation in which each paper disk is anked on each side by a cloth disk, said wheel being compressed axially as by stitching whereby the crinkles in the paper are embossed on the cloth, clutching said paper and cloth disks together so that stresses ordinarily of tearing magnitude with respect to the paper are distributed by virtue of the inherently yielding quality of the cloth.

4. Bufling or polishing wheel comprising disks of paper and cloth in an arrangement of alternation in which each paper disk is anked on each side by a cloth disk, the cloth disks being supported by the paper so that the ends of the threads of the cloth disks stand substantially erect in the periphery of the wheel, the cloth disks being angularly displaced to present the thread ends with substantially uniform density around the entire circumference of the wheel adjacent the edges of the paper disks, they cloth disks performing a Wick-like function in feeding abrasive to the cutting edges of the paper disks.

DON H. ROSS. LAWRENCE J. NOOK.

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