US1631998A - Rotary brush - Google Patents

Description

June 14, 1927; 1,631,998

E. s. CARMAN ET AL RpTARY BRUSH Filed April 25. 1922' 'INVENTOM f 4141974): Karma: M y A a ward 56101955.

Patented June 14, 192 7.

UNITED- STATES PATENT OFFICE.

EDWIN S. CARHAN, 0] EAST CLEVELAND, AND EDWARD E. CURTIS, OI LAKEWOOD,

OHIO, ASSIGNOBS TO 'IKEDSBOBN MANUFACTURING COMPANY, OI WD,

01:10, A conrou'rron or omo.

' BOTARI BRUSH.

Application filed April 25, 1922. Serial No. 558,539.

In the Construction of rotary brushes for industrial use, it has heretofore b 'en the general practice, where the brush material was intended to be renewable, to mount such 5. sections on a permanent hub that was in' turn adapted to be secured onto an arbor.

Various objections have been found with this construction. In the first place, hubs of various internal dimensions must be kept 1 in stock to fit arbors of different diameters,

and where brush sections of different internal diameters require to be accommodated,

a similar variety of external hub diameters is required. Finally, such permanent hubs must necessarily be of relatively heavy and substantial construction, involving a corresponding expense in manufacture and dead weight in the machine in which the brush is being used.

One object of the resent invention, accordingly, is to provi ea holder for rotary brush sections, whatever the specific character ofthe latter, which will be relatively light and inexpensive to manufacture. At 2 the same time such holder is adapted to be mounted directly on an arbor -.in the same fashion as a permanent hub, but includes means whereby it may be accommodated to arbors difi'eringconsiderably in diameter.

To the accomplishment of the foregoing and relatedends, said invention, thenyconsists of the means hereinafter full described and particularly pointed out in the claims, the annexed drawing and the following description setting forth in detail certaln mechanism embodyin the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of-the invention may be used.

In said annexed drawing Fig. 1 is a side elevation of a rotary brush embodying our present improvements; Fig.

- 2 is a central transverse section thereof taken on thplane indicated by the line 2+2, Fig. 1; Fig. 3 isa side elevation of one of the side lates forming a feature of the holder fort e brush sections as initially stamped out; Fig. is a perspective view of such plate as prepared for use in clamping the brush sections together and Fig. 5 is a similar perspective view of an interchangeable bushingemployed in connection with such plates to mount the same on an arbor.

The. brush material, whereof the brush sections 1 are composed, may consist of stranded wire or any of the other usual materials emplo ed in brushes of the general type in han and such material may be looped around circular wires or rings 2, or otherwise formed into circular sections in any approved manner, the detail construe tion of the sections forming no part of the present invention. 1 v

Our improved holder for such sections, or for the brush material generally, the use of said holder not being limited even in this respect, comprises as its principal elements two complementary annular plates 5, 5. Indeed, as will be evident from what follows, said plates are identical inform, being initially stamped or otherwise cut out of a flat sheet of metal, as shown in Fig. 3 with three series of radially spaced, inwardly proecting tongues or projections and apertures ada ted to co-operate therewith.

1e tongues 6 forming the innermost. serles are located closely adjacent the inner circular opening 7 in the plate and are only long enough, when bent at ri ht angles ta the plate, to engage and hol in properly centered position a cylindrical element in the form of a sleeve or bushing 8 thatris interposed between the two plates when assembled together to form the holder and serves to hold the same in properly spaced relation.

The width of such sleeve 8, in other words,

will correspond with the width which it is desired the base of the brush, composed of sections 1, shall have and said sleeve may be formed of a piece of sheet metal bent into circular form with or without its juxtaposed ends secured together, the tongues or rojections 6 serving to retain the same inp ace.

Thetongues'9 that form the intermediate series are considerably longer than the tongues 6, a portion of the metal lying within the central. opening 7 in the-plate being utilized to form the same, as shown in Fig.

3. Said tongues 9, in other words, are long enough so that when bent at right angles to the plate, they are adapted to projectjhrough correspondingly located slots or openings 10 in the opposite plate, and upon. the ends of such tongues being then bent over, the plates are drawn towards each other and locked against spacing member 8 as well as caused to press laterally against the assembled brush sections 1.

The tongues 11 that compose the outermost series are preferably struck up from the periphery of the plate so as to be pointed without an extra 0 eration being required. These tongues 11 ii ewise project from the inner face of the plate at approxlmately rightangles thereto and are adapted to interengage with the brush material of sections 1, hem of suflicient length to extend therethroug beyond the median plane of the brush, as shown in Fig. 2, the tongues on the respective sides being arranged in staggered relation to those on the other.

The number of tongues in each series may, of course, vary, four being shown in the structure illustrated, and a corresponding number of openings or slots 10 being of course provided. The radial location 0 the intermediate series of tongues 9 is such that they will provide a seat for the' brush sections 1, as clearly shown in Fig. 2.

In order to secure the holder, as described,

onto an arbor, we employ interchangeable bushings 12 (see Fig. 5) that are adapted to be fitted in the central openings 7 in the plates 5 comprised in such holder. These bushings like the plates are preferably stamped up from sheet metal and are in the form of flat rings with a flanged central opening 13, such ring having a series of integral lugs or projections 14 adjacent its periphery that are adapted to frictionally engage in the aforesaid central openings 7 in the plates 5. Such lugs, however, are spaced inwardly from the periphery a sufiicient distance to leave radially projecting portions that are adapted to bear against the sides of the holder. accordingly be readily fitted or removed and replaced with others havinga central open: ing of different diameter to suit the diameter of the particular arbor on which it is desired to mount the brush. As shown in Fig. 2, the flanges of the bushings are preferably directed inwardly so that the latter will present a smooth face to the collar and washer, or equivalent elements, on the arbor between which the completely assembled brush is clamped. The sleeve 8 will preferably be of 1 such diameter as to lie between such opposed clamping elements on the arbor so as to directly take up the compression strain imposed by the latter on the brush holder.

A brush constructed in accordance with our improved design is not only capable of being quickly assembled on the holder. but after being thus assembled is readily fitted for use on an arbor of any diameter within the range permitted by the central openings in the plates 5. The manner in which the plates may be stamped up from sheet metal not only serves to keep the first cost of The bushings 12 may manufacture down, but also renders the construction as a whole very reasonable, quite aside from the flexibility permitted in the matter of size by var ing the number of brush sections or quantlty of brush material clamped between the side plates.

It will be noted that the means whereby our improved construction of brush including the assemblage of sections mounted on the special holder hereinbeforeldescribed is adapted to be mounted on arbors of different diameters, form the subject matter of our co-pending divisional a. lication filed November 13, 1924, Serial 0. 749,665.

Other modes of applying the principle of our invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

We therefore particularly point out and distinctly claim as our'invent1on:

1. A holder for rotary brush sections comprising complementary annular plates adapted to receive and laterally ho d such sections, a spacing member interposed between said plates, and means adapted to retain said plates in drawn together position, said means also serving as a seat for the sections.

2. A Holder for rotary brush sections comprising complementary annular lates adapted to receive and laterally hold such sections, a spacin member inter osed between said plates, an means adapte to retain said plates in drawn together position, said means also serving as a seat for the sections, and tongues projecting inwardly from said plates and interengaging with such sections to hold the same against rotation.

3. A holder for rotary brush sections comprising complementary annular plates adapted to receive and laterally hold such sections, a spacing member interposed between said plates, and tongues stamped up from said plates and pro ecting inwardly therefrom, each plate being formed with openings adapted to receive the tongues on the other and the ends of such tongues being bent ov r, whereby said plates are locked EE-ftiiluil said spacing member.

4. A holder forrotary brush sections comprising complementary annular plates adapt- ,ed to receive and laterally hold such sections, a spacing member interposed between said plates, and tongues stamped up from said plates and projecting inwardl from at points intermediate of their inner there- I and outer edges so as to serve as a seat for the sections, each plate being formed with openings adapted to receive the tongues on the other and the ends of such tongues being bent over, whereby said plates are locked against said spacing member.

5. A holder for rotary brush. sections comprising complementary annular lates adapt ed to receive and laterally ho d such sections, a spacing member interposed between vsaid plates,

tongues stamped up from said plates and pro ecting inwardly, therefrom at points intermediate of their inner and outer edges so 'as to serve as a seat for the sections, each plate being formed with openin 8 adapted 'to receive the tongues on the ot er and the ends of such tongues being bent over, whereby said plates are locked against said spacing member, and other tongues projecting inward-1y from said plates from points radially removed from said first-named tongues, said; other tongues being ada ted to interengage with such sections to old the sameagainst rotation.

6. A holder for rotary brush sections comed to receive and laterallIv prising complementary annular lates adapttions, three series of radial y spaced inwardlpl projecting tongues on said plates, each of t e latter being formed with openings adapt ed to receive the tongues of the intermediate series on the other, a sleeve enga ing with 2 sleeve, and the outer seriesof tongues being 0 adapted to interengage w ith such sections to hold the same against rotation. Signed by us, this 15 day of April, 1922.

EDWIN s. CARMAN. EDWARD E. CURTIS.

hod such sec- 50

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