USRE20002E

USRE20002E - robbins

Info

Publication number: USRE20002E
Authority: US
Publication date: 1936-06-09

Description

-June 9, 1936. w. H. RoBBiNs Re. 20,002

POLISHING DEVICE Original Filed May 22, 1933 2 Sheets-Sheet 1 Jmewlrf/ WILL/AM H. Rom,

"awww June 9, 19736.

w, H. RoBBiNs POLISHING DEVICE Original Filed May 22, 1955 2 Sheets-Sheet 2 #mm/auna v l Y corporation .of Ohio My invention relates to steel wool and particularly to pads or buffers made from steel wool, with or Without other materials.

steel wool pad having a toroidal or annular shape.

It is another object making an annular or.ringshaped steel which is economical and eficlent.- r

It is another object to provide an' annular steel wool pad which is composed of a, plurality of separate portions which in assembly form` a ring-j shapedpad. Y f

My object is, to provide an article oimanufac-` ture for" use on rotary machines ron which this annular steel wool pad is mounted: and in such anarrangement the steel wool strands,cwhich are long continuously wound strands, aret arranged in elongated loops which lie in axial planes.

Thereore, the strands are substantially at 2 0 right angles tothe direction of movement of the 'rotary pad. A number of'these radial strands are superimposed one over deep long-wearing cushion which gives an even abrasive effect upon the surface engaged.

In the drawings:-

Figure l is a perspective view wool pad1 thereof.

Figure 2 is a section'through the ring-shaped steel wool pad and the the pad is mounted. t Figure 3 is an enlargedV cross-secticnalview through the pad Aof Figure 2, showing the internal construction of the ring-shaped pad.

35 Figure 4 is a, modified form of the steel wool pad, having separated portions which unite in assembly to form a ring-shaped pad.

Figure 5 is a perspective view of'the devices shown in Figure 2.

Figure 6 is a side elevation of the pad according to Figure 4 mounted on' a rotary head similar to that shown in Figure 2.

Referring to the drawings in detail, I is a mandrel which is capable of being rotated. Along one side of this mandrel runs a longitudinal groove 2 through which cords 3 loosely pass.

The mandrel I is mounted in a rotatory apparatus and the cords 3are placed in the slot 2. Steel wool ribbon 4 is then wound upon the mandrel I as the latter is rotated, and builds itself up in layers as shown in Figure 3.

This steel wool ribbon does not in itself form a part of this invention: it may be fed to the mandrel from drums upon which it is stored and from which it is unrolled much like tape or ribbon the other and `form a t in Figure 3.

of one of proved steel wool pads during the manufacturel rotary head upon'which f.

' original No. 1.988,335, dated Y serial No. 372,272, may 22,

I'fol-reissue April 4, 1936,v Serial No. 72.792

Afrom a spool, or` roller bandageA from a roll of that I to provide a method of January 15, 1935,v 1933. Application material. 'I'he manufacture of this steel wool c v ribbon is well known to those skilled in the art. It is an objectof my invention to provide aY i The successive layersxof steel wool ribbon grad- .ua'ly ybuild themselves up into a cylinder-like roll 5 of steel Woolf Whenr this has reached a satisfactory diameter as shown in Figure 1 the rotation of the machineis halted. The mandrel is then removed from the machine and carefully withdrawn fromfthe roll 5, leaving the cords 3 in their position passing through the hole in the center of the steel wool roll- The cylindrical roll t of'steel wool is now swung into annular or toroidal form about a head I0 by pulling the opposite ends of thecords 3 together and tying them rmly in a knot: The steel wool nowtakes a ringLshaped form 1, and the cords 3 occupy a circular position.

If' it is desired to use the annular steel wool pad I von arotating plate, it may be held thereon by any suitable means and pressed down against the plate until it has the oval cross section shown [A' modified form of annular steel wool pad is ,shown in Figure 4. It consists of a plurality of separate portions which in assembly are placed end to end to form a ring or torus. These sections may be wound separately on independent mandrels in the mannerthe several sections4 wound either successively or simultaneously on a common mandrel I. The sections are then vunited by tying the cords 3 in the same manner as previously described. It is also obvious that asteel wool roli 5 may be wound on along mandrel and then cut up into sections which are thereafter assembled in annular form.

previously described, or f a new cord being threaded through the centers of f the sections in bead-like fashion, vidual sections ofcord may be obvious manner.

or else the indireunited in an 4My annular steel wool pad,.in either of its forms previously described, is particularly adapted to use in a portable rotating machine. vThe pad is held by a. head I0 mounted on the shaft II by the threaded connection I2 and fitting its central aperture in any convenient manner. The shaft I I is rotatably supported on the bracket Il by the antifriction bearings I4 and is then adapted l to be rotated by the electric motor or other power source applied to the machine such as by the belt l5 engaging the pulley I8 keyed to the shaft II. The disintegration of the pad through centrifugal force is prevented by the strands being held together by their annularly wound construction. 'I'he hollow construction of the pad permit! the distribution of the steel wool along the lines of the greatest work, whereas a solid pad wears unevenly. being greater on the periphery, where the linear speed is greater, than on the inner edge of the pad. Used in this manner, my annular steel wool pad finds very valuable and important applications to cleaning, scouring, or partially resurfacing oors, decks, tables, counters and other like surfaces, especially in hospitals, schools, factoriesland ships. The creation of flying dust, as occurs in other types of re-surfacing or scouring machines is greatly reduced by the use of my annular steel wool pad and may be eliminated entirely by combining. with the rotary machine, adust-collecting device such as the vacuum suction mechanism well known in the art.

The steel wool pad indicated in Figure 4 has been illustratedas being mounted on a rotary head in Figure 6. The rotary head indicated ln Figure 2 has been used as a mounting for the pad, the same numerals used in the description of Figure 2 indicate identical parts in Figure 6.

It will be understood that I desire to comprehend within my invention such modifications as may be necessary to adapt it to varying condiltions and uses.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A new article of manufacture for polishing. comprising a rotary head, a ring-shaped steel wool pad having an aperture receiving said head. said pad being composed of layers of steel wool ribbon, the strands of steel wool comprising loops lying in axial planes of the ring.

2. A new article of manufacture for polishing, comprising a ring-shaped steel wool pad having y ao,ooa

anaperture adaptedtobeplaceduponarotary head, said pad being composed of layers of steel wool ribbon wound in spiral superposition on one another,` the strands of steel wool comprising I loops lying in axial planes of the ring.

3. A new article of manufacture for polishing, comprising a rotary head, a ring-shaped steel wool pad mounted on said head, said pad being composed of layers of steel wool ribbon wound in spiral superposition on one another, the strands of steel wool comprising loops lying in axial planes of the-ring.

4. A new article of manufacture for polishing. comprising a rotary head, a ring-shaped steel wool pad driven by said.head and substantially co-axiai therewith; said pad being composed of a plurality of sectionsy arranged end to end in an annular form, and having a central ap-` erture, said pad being composed of layers of steel wool ribbon, the strands of steel wool comprising loops lying in axial planes of the ring.

5. A new article of manufacture for polishing, comprising a ring-shaped steel wool pad adapted to be rotated about its axis, said pad being composed of layers of steel wool' ribbon, the strands `oi steel wool comprising loops lying in axial planes of the ring.

, 6. A new articleof manufacture for polishing, comprising a ring-shaped steel wool pad adapted to be rotated about its axis, said pad being oval in cross section with the longer diameter of the section disposed radially of the ring and being composed of layers of steel wool ribbon, the strands of steel wool comprising loops lying in axial planes of the ring.

. WILLIAM H. RJOBBINB.