US684203A - Rotary brush. - Google Patents

Description

ROTARY BRUSH.

(A nmmon filed Junc- 29, mm)

(No Model.)

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UNITED STATES PATENT OFFICE.

WVILLIAM G. EATON, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO G. H. FLAGG, OF SAME PLACE.

ROTARY BRUSH.

SPECIFICATION forming part of Letters Patent No. 684,203, dated October 8, 1901.

Application filed June 29,1901. Serial No. 66,479- (No model.)

To all whom, it may concern.-

Be it known that I, WILLIAM G. EATON, of Boston, in the county of Suifolk and State of Massachusetts, have invented certain new and useful Improvements in Rotary Brushes, of which the following is a specification.

This invention relates to rotary brushes composed of a plurality of layers of strips of fabric or other suitable flexible material radiating from a central hub, the strips lyingin planes substantially at right angles to the axis of rotation of the hub.

The invention has for its object to provide a brush of this character of strong and durable construction adapted to be cheaply manufactured and to be readily applied to and removed from the shaft which imparts motion to it, so that the brush can be readily applied and removed by the user.

The invention consistsin theimprovements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a side View of a rotary brush embodying my invention. Fig. 2 represents a section on line 2 2 of Fig. 1. Fig. 3 is a perspective view illustrating the operation of constructing the brush. Figs. at and 5 represent in perspective one of the annular washers and the tubular bushing, respectively.

The same reference characters indicate the same parts in all the figures.

My improved brush is manufactured as follows: I provide a series of annular washers l, which may he of any suitable material--such as cardboard ,leather-board, the. --the washers being of a material which is relatively stifi and adapted to be firmly glued to an adjacent surface or surfaces. I also provide a tubular bushing 2, adapted to closely fit the inner margins of the washers 1, so that the washers may be placed upon the exterior of the bushing, theirinner edges bearing on the outer surface of the bushing, so as to be supported thereby. The bushing may be a short section of fibrous material-such as paper, leather boarthor strawboard-or it may be made of a sheet of either of these materials bent into tubular form. One of the washers 1 having been placed upon the bushing 2, as indicated in Fig. 3, I place upon the upper surface of the said washer a series of strips 3 of cloth or other suitable flexible material, said strips being arranged so that they radiate from the bushing and collectively form a-disk with an open center, said center being the interior of the bushing.

the external surface of the bushing, so as to receive some support therefrom, and are suitably overlapped, so that their outer portions The inner ends of the strips 3 are preferably abutted against is completed by adding successively any desired number of washers 1 and brush-sections composed of strips 3, said washers and brushsections alternating, as shown in Fig. 3, until a brush of the desired thickness is formed, the inner ends of each layer of strips 3 and the corresponding surfaces of the adjoining washers being treated with glue or cement. When the parts of the brush have been assembled and before the glue or cement has set or hardened, pressure is applied to the series of washers, said pressure tending to force the washers together toward each other and causing them to compress the interposed portions of the strips 3, so that the said interposed portions beco me dense and rigid after the setting of the glue or cement, and thus constitute with the Washers 1 and the bushing .a rigid hub which securely holds the Q loose outer portions of the strips and suitably spaces the loose portions of each layer of strips from the corresponding portions of the adjacent layers.

The bushing 2 constitutes a stop or barrier for the glue or cement which is forced inwardly from the joints between the washers and strips when pressure is applied to said parts, said bushing preventing the expressed glue or cement from encroaching upon the shaft-receiving bore of the brush and being firmly secured to the inner edges of the washers and to the inner ends of the strips 3 by said glue or cement, and thereby increasing the strength and rigidity of said inner ends and washers. The inner surface of the bushing therefore constitutes the surface of the shaft-receiving bore, said surface being smooth and free from protuberances such as would be caused by the expressed glue or cement if said bushing were not present.

The brush above described is adapted to be readily applied to and removed from a shaft, the brush comprisingin one structure abrush, a hub, and a hub bushing or lining, adapted to accurately fit the shaft by which the brush is rotated. It will be seen, therefore, that brushes embodying my invention may be shipped from the manufacturer to the owners of machines of which said brushes are to form parts and conveniently applied and removed by said owners, the construction being relatively inexpensive, so that wheira brush is worn out the hub portioncan be discarded without objectionable expense.

In another application for Letters Patent of. the United States for improvement in presses for making rotary brushes I have shown a press having a bed adapted to support the parts of the brush while they are being assembled, a central core projecting above the bed and closely fitting the interior of the bushing, and a platen movable toward and from the bed and recessed to receive the core,

the acting surface of the platen being annular, so that it bears upon the topmost washer by the pressure against it of the glue or ce ment displaced by the sidewise pressure ex V erted on the washers.

I claimposed of a plurality of annular brush-sections, each composed of flexible strips radially arranged to form a disk with an open center, annular spacing-Washers between which the v V 4 As an article of manufacture, a brush com- ,7

inner ends of the strips are compressed,.said

inner ends and washers being united by. glue 7 or cement which maintains the compression 7 o of the strips, 30 that the inner ends of the 1 strips and the washers collectively form a rigid hub which holds and spaces the loose.

outer portions of the strips, saidhub having; I a shaft-receiving orifice, and a tubular bush 3 7 ing surrounded by the bruslrsections and; washers and supporting them and forming a stop orbarrierfortheglueorcementexpressed f from the joints between the strips andwashers, the bushing being secured to the'hub by the said glue or cement, and forming the Wall of the shaft-receiving orifice.

In testimony whereof I have affixed my sig- V I 7 nature in presence of two witnesses. V

Vitnesses:

GEORGE W. MEALEY, C. F. BROWN.

WILLIAM G. EATON, i

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