US925178A - Brush. - Google Patents

Description

H. V. HARDMAN.

BRUSH.

APPLICATION FILED DBO. 7, 190B.

Patented June 15, 1909.

llNlilEl) STAQflEbl lll lltlil llt'l V. HARDMAN, OF BELLEVILLE, N

Parana onsros.

11W JERSEY, ASSIGNOR 'lO RUBBER-BOUND BRUSH COMPANY, OF BELLEVILIIE, NEW JERSI'IY, A CORPORATION OF NEW JERSEY.

BRUSH.

Specification of Letters Patent.

Patented June 15, 1909.

Application filed December 7, 1908. Serial No. 466,343.

To all whom it may come/"7t:

Be it known that 1, llnmnnz'r V. .lIARD- MA v, a citizen of the United States of America, residing at Belleville, in the county of E X and State of New Jersey, have invented certain new and useful Improvements in Brushes, of which the. following is a speciill vtion, reference being had therein to the aeeonmanying drawing.

This invention relates to brushes adapted to be manipulated by hand, and more particularly to shaving brushes, although its application and use might be given. a much wider range.

My object is to greatly cheapen the whole structure, especially the handle, and also to reduce the weight of the latter as much as possible.

A further object of my invention is to pro vi a superior fastening device for the bristles or hair to prevent them from drop-- ping or being pulled out or becoming looks cued, and to allow the brush-portion to be more readily and positively and securely cued to the handle-portion or to be re- .ivcd therefrom for repairs, cleaning, in

ion, or the substitution of a new brushrtion when necessary.

To his end my invention consists in the peculiar features and combinations of parts more fully described hereinafter and pointed out in the claims. 1

in the accompanying drawings, Figure 1 represents a longitudinal section of my con1-.

piste invention as applied to an erdino' lying brush, and Fig. 2, a sin. lar may I n the handle and bruslnportion seprefcrence numeral 1 indicates a brush 3 lie composed preferably of gutta percha ard rubber which material is desirable c it is light, and impervious to water, 268 a fine polish, and possesses many ions advantages for an article of This handle is hollow, being on n the usual manner, and is formed l :h a socket-portion 2 in which the vrly bound end of a brush 3 is 1'&;Zl'.I.OV- secured. Across the middle of the l socket-portion 2 cular web which constitutes an abut. g older elagainst which the bound end of i abuts when screwed into the re upper ends of the bristles of crush are first grouped and stuck is an integral, transverse,

together by soft plastic rubber 5 and are then forced through and surrounded by a binding ring 6, preferably com oscd of pewter orlead and having a conica interior wall 7 converging as it extends downward or outward to form a contracting or smaller opening at the outside than at the inside of the ring. This construction results in producing a key-stone or dovetail anchorage or fastening for the bristles after the soft rubber 5 hardens withinthe ring, and any longitudinal strain on the brush will tend to bring a tighter grip, both collectively and individually, on the bristles to reventthem from coming out. The boun end of the brush is squared ofi smoothly to meet a corresponding smooth, fiat surface upon the under side of the transverse circular shoulder 4 for the purpose of effecting a tight joint 8 between these two parts. The outside of the binding ring lies parallel to the axis of the ring or at right-angles to the end of the brush in order to facilitate the o eration of screwing and unscrewing the brus from the socket, and to make the work of manufacturing easier. In this cylindrical exterior surface are formed annular screw threads 9 which engage corresponding threads 10 on the annular interior side-wall of the socketportion 2.

Among the advantagesef this construction might be mentioned the fact that the bristles at the point of fastening are bound together by a water-proof cement which is not easily made soluble by hot water or soap suds, and that the brush-portion can be made and secured in the socket b simply screwing it in place. The lead binding band which screws into the gutta-percha socket will not corrode and bind these two parts together, but will be unaffected by water or soap, and can always be unscrewed with facility. Furthermore, as the binding ring or band 6 is composed of lead and the screw threads thereon being cut in contradistinction to being spun, they effect a much tighter and better JOlIll) when screwed in place. The inside or thinner edge of the binding band is squared off flush with the end of the bristles, and when the brush is screwed home a grinding joint is effected against the shoulder 4, which joint together with that formed by the screw threads at side, produce a tight seal which excludes water.

it is evident that my invention might changed in many ways that would naturally suggest themselves to a skilled mechanic; therefore I do not limit myself to the exact construction herein shown, but consider myself entitled to all the variations that come within the scope and spirit of my device.

Having thus described my invention, what I claim is:

1. In a brush of the character described, a hollow handle-portion provided with a transverse circular shoulder substantially closing its lower end, in combination with a socket- .pertion having a cylindrical threaded interior wall, and a brush provided with an exteriorly threaded binding ring and a squared end,

I whereby the brush is adapted to screw into said socket and to abut tightly against said shoulder.

2. In a brush of the character described,

the combination with a hollow handle-pop tion provided with a transverse circular shoulder substantially closing its lower portion, of a socket portion containing a cylindrical wall threaded to receive a corresponding member, a brush bound with a cylindrical binding ring, exterior threads thereon adapted to take into those of the socket, a conical interior wall in said ring, and plastic waterroof cement for holding the bristles within t e ring.

In testimony whereof I ailix my signature in presence of two witnesses.

HERBERT\ HARDMAN.

Witnesses: I

R. G. DU Bors, FRANK PAUL.

Images