US2033253A - Polishing and coloring wheel - Google Patents

Description

March 10, 1936. PFOHL I 2,033,253

POLISHING AND COLORING WHEEL Filed April 18,. 1934 2 Shets-Sheet 1 FIG. (2. F1013- INVENTOR HAROLD F. LPFom March 10, 1936. H. F. L. PFOHL 2,033,253

POLISHING AND COLORING WHEEL Filed April 18, 1954 2 Sheets-Sheet 2 FIG. 6. Fm- 9.

@HI I 1 l 1 INvENToR HAROLD E LPF'o HL.

F161 '10. BY

Patented Mar. 10, 1936 UNlTE. STATES zsnzsfs PAT "if;

NT, OFFICE Claims.

This invention relates to bumng and polishing wheels but more particularly to so-called polishing and coloring wheels which are made up of layers of fabric, cloth or similar material sewed 5 together and formed into a wheel for mounting on an arbor. The wheel is then rotated with the arbor and various bodies or metals held against the periphery of saidwheel for polishing and coloring.

Bufilng wheels have heretofore been made to perform first the operation of bufilng by using a coarse bufllng compound on the wheel to cut down the rough surface and remove coarse scratches and other imperfections and second the operation of polishing and coloring by using a finer ,coloring composition. This usually makes it a two wheel operation to cut down and then polish and color, as the remains of the coarse composition on a wheel is liable to scratch the work if the same wheel is used with a finer composition to polish and color. A wheel which is best adapted for fast cutting is not so well suited for coloring. The cutting wheel should be of a design to make it stiff as in my buffing wheel which is the subject of my co-pending application No. 710,485 filed Feb. 9, 1934. My present wheel is of a shape to allow for extreme flexibility as is desirable in a polishing and coloring wheel.

The object of my invention is to provide an improved bufiing wheel to be used for polishing and coloring.

With this object in view, the invention consists in certain features of novelty in the construction, combination and arrangement of parts by which the said object and certain other objects which will hereinafter appear are attained, the invention being more particularly pointed out in the claims.

In the drawings accompanying and forming a part of this specification,

Figure l is a plan view of a single and complete disk of fabric or other suitable material from which my preferred improved polishing and coloring wheel can be built up and showing the central hole for mounting on an arbor, and a dotted line on which it is folded as a first operation toward building up said wheel.

Fig. 2 is an edge elevation of two disks side by side which are first put together before doubling.

Fig. 3 is a perspective view of the two disks of Fig. 2, folded on the dotted line of Fig. 1 to form half disks of four thicknesses.

Fig. 4 is a perspective view of the two disks folded on the dotted line of Fig. 3 to form quarter disks of eight thicknesses.

Fig. 5 is a perspective view of the two disks folded on the dotted line of Fig. 4 to form eighth disks of sixteen thicknesses.

Fig. 6 is a perspective view of one-half of a 5 wheel showing the method of building up a wheel according to my invention when using the foldeddisks of Fig. 4.

Fig. '7 is an edge elevation of a portion of a wheel showing the method of building up a wheel when using the folded disks of Fig. 5.

Fig. 8 is an edge elevation of a portion of the wheel shown in perspective in Fig. 6.

Fig. 9 is an edge elevation of a portion of two wheels as of Fig. 8 but made right" and left and mounted on an arbor.

Fig. 10 is an edge elevation of a portion of a wheel similar to the one of Fig. 7 and with a piece of work held against its edge.

In Fig. 1 is shown a whole disk I having a pcriphery 2 and a central hole 3 for mounting on an arbor. In my preferred construction I employ two disks as i and i in Fig. 2 laid together and folded as on dotted line 4 of Fig. 1 to make the half disks of four thicknesses of Fig. 3. The half disks of Fig. 3 are folded on the radial dotted line 5 to make the quarter disks, referred to as A, of eight thicknesses of Fig. 4. The quarter disks of Fig. 4 are folded on the radial dotted line 6 to make the eighth disks, referred to as B, of sixteen thicknesses of Fig. 5.

In folding the material to make the quarter disks of Fig. 4, one large pocket I is formed on the horizontal fold and two smaller pockets 8 are formed on the vertical fold. In folding the material to make the eighth disks of Fig. 5 the pockets 1 and 8 of Fig. 4 are together on the lower diagonal edge and one large pocket 9 is formed on the horizontal fold. These pockets, as I, 8 and 9, can be retained for holding polishing compound but in some classes of work they can be dispensed with by cutting the fabric from the periphery radially toward the center a distance of ID on the horizontal fold in Figs. 4 and 5, or a distance of I] on the vertical fold as in Fig. 4.

As shown in Fig. 6 the bufling wheel I2 is .built up of quarter sections, as detailed in Fig.

4, called A, sixteen of which are laid uniformly around in the form of a wheel, each section overlapping on one of its sides the three preceding sections and being overlapped on its other side by three following sections. There are then four sections overlapping at all points around the wheel and as each section is formed of eight together by means of rows of sewing H. The

number of thicknesses given is about the limit which can be successfully sewed together, but I do not limit myself to any particular number.

In the figures the sections are shown as being lapped and everyother one as being reversed in reference to the folds. Where all of the sections are out on radial lines at the folds as at I and 8 in Fig. 4, or none of them are cut leaving the pockets intact, the sections can be reversed in assembling as shown in Figs. 6, 7, 8, 9 and 10. Where the folds are cut on the radial lines at only one fold, as at 9 in Fig. 5, it is preferable to build up a wheel with similar folds of each section lying in the same direction. Then the cut fold, as 9 of Fig. 7, can preferably be used as a trailing edge Y, as shown by the arrow l5 to indicate the direction of rotation, and to avoid catching in work with projecting points. The leading edge is then referred to as X.

The peripheral edge elevation of a portion of a wheel in Fig. 8 shows the quarter, or A, folded sections of Fig. 4 uniformly overlapped and each section extending from one side of the wheel diagonally to the other side. As explained with reference to Fig. 6, each section overlaps on one side the three preceding sections and is overlapped on the other side by the three immediately following sections to make four sections across the wheel.

When the wheel is built up of eighth sections B, as in Figs, 7 and 10, each section overlaps a preceding section on one side and is overlapped on the other side by a following section. There are then two sections overlapping at all points around the wheel and as each B section is of sixteen thicknesses of material, the complete wheel has a total of thirty-two thicknesses at all points, exclusive of the cover plates l3.

On account of the peripheral lines of the edges of the sections being diagonal with the sides of the wheel, the section as A of Fig. 8 or B of Fig. 7, first contacts with the work at the leading edge X and leaves the work at the trailing edge Y, the

- direction of rotation in all cases being in the direction of the arrows I5.

Referring to Fig. 10, a piece of work I6 is shown being pressed against the periphery of a wheel for polishing, causing the sections B to flare out sidewise and the diagonal lines of said tiions against the work has a tendency to move the work in the direction from I i to l8. To over come this tendency, wheels are made up as "rights and lefts" as in Fig. 9 and mounted on an arbor l9. In this arrangement the action of the wheels on a piece of work counterbalance each other as the left wheel has a tendency to move the work toward the right and the right wheel has a tendency to move the work toward the left. The wheels as shown can be mounted with a spacer 20 between them or mounted in contact with each other.

The flaring out of the sections as the work is pressed against them causes the layers of the sections to assume a position more at right angles with the direction of rotation of the wheel to give a side wiping action across the periphery of the layers as indicated in Fig. 10. This also causes the sections and the layers of the sections to separate and lay over in one direction to run by the work like thumbing the leaves of a book, which gives the softer action necessary in polishing and coloring.

The sections in this invention cross the wheel from side to side but all in one direction and not runningin the direction of the wheel periphery or being interleaved to cross the wheel by running in different directions avoids the stiffness and cutting effect necessary in a cutting wheel.

I also contemplate using separate layers from waste pieces cut into sector shape and lapped and sewed with cover plates ii to form a wheel similar to the lapping of the sections from folded disks instead of cutting the folds as at I, 8 and 9 in Figs. 4 and 5.

Having thus described my invention, I claim,

1. A polishing and coloring wheel of built up construction composed of a plurality of sections formed from radially folded pieces of material to have a single large fold on one radial edge and a plurality of smaller folds on the other radial edge, each of said sections overlapping preceding sections on one side and being overlapped by following sections on the opposite side to complete said wheel with a single course of sections and with the peripheral edge of said sections extending in one direction diagonally across the face of said wheel, said sections being alternately reversed in reference to the folds.

2. A polishing and coloring wheel composed of a plurality of sections, each of said sections formed of two disks superposed and diametrically folded to sector shape with folds on both radial edges, said sections radially disposed about a common center and progressively overlapping to form said wheel of uniform thickness and a single course of sections with the peripheral edges of said sections extending diagonally across the face of said wheel in one common direction from one side of said wheel to the other to have a leading edge on one side and a trailing edge on the other side, the folds of said trailing edge being cut a short distance from the periphery toward the wheel center.

3. A polishing and coloring wheel composed of a plurality of sections formed from disks folded to sector shape to produce folds on both radial edges of said sections of different numbers, said sections arranged in overlapping layers to form said wheel of a single course of sections with the peripheral edge of each section extending diagonally across said wheel to have a leading radial edge on one side and a trailing radial edge on the other side of saidwheel, said sections being alternately reversed as to folds and said folds cut a short distance from the periphery toward the wheel center.

4. A polishing and coloring wheel composed of disks folded to form equal sized sectors with folds on both radial edges, the thicknesses of material in each sector arranged in superposed layers in contact in parallel relation and the wheel formed of a single course of said sectors uniformly overlapping each other about a common center with the peripheral edges of said sectors extending diagonally across the face of said wheel in a common direction, all radial folds of said sectors on the sides of said wheel and with one radial edge of each sector on one side of said wheel and the other radial edge of said sector on the opposite side of said wheel.

combination, of a pair of polishing and eoloring wheels mounted in juxtaposition on an arbor with a spacer between said wheels. each of said wheels composed of a plurality of sections formed from disks folded to sector shape to produce folds on both radial edges of said sections, said sections arranged in overlapping layers to torm said wheel

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