US723579A - Brush. - Google Patents

Description

.4 PATENTED MAR; 24, 1903. T. BRANTLEY.

BRUSH.

APPLIOATION FILED 1411'. 13, 1903.

H0 MODEL.

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UNITED STATES PATENT. OFFICE- I THOMAS BRANTLEY, OF ALBANY, GEORGIA, ASSIGNOR OF ONE-HALF TO AUGUSTUS J. SMITH AND JAMES H. ALLEN, OF ALBANY, GEORGIA.

BRUSH.

SPECIFICATION forming part of Letters Patent No. 723,579, dated March Application filed January 13, 1903. Serial ll'o. 138.899- (No model.)

To all whom it may concern: I

Be it known that I, THOMAS BRANTLEY, a citizen of the United States, residing at Albany, in the county of Dougherty and State of Georgia,have invented certain new and use ful Improvements in Brushes, of which the following is a specification.

The object of my invention is to provide improved means for attaching bristles or tufts of other similar material to a brush frame, bar, or block.

My invention is especially applicable to the construction of cotton-gin brushes, but is not limited thereto.

Ordinarily in the construction of gin brushes a series of tufts of bristles is attached to each bar of the brush-frame by a single cord in such manner that if the cord is cut or broken at any point the whole series of tufts is loosened. If one of the tufts becomes worn or cut and it is necessary to remove it and replace it by another, the bar to which this tuft is attached must be removed from the brush-frame, and it is necessary to loosen the entire series of tufts on the bar, According to my invention I secureeach tuft or.

bunch of bristles or similar material was pendently to the brush frame or bar in such manner that while being held firmly when in use each tuft may be readily removed and replaced Without disturbing the other tufts.

In carrying out my invention I provide a ferrule for each tuft and draw the tuft into the ferrule by means of a cord and then apply an elastic cement, which firmly unites the bristles and cord to the ferrule. The tufts, with their ferrules, are attached to a brush bar or frame by compressing the ferrule into notches suitably formed to receive them. The manner in which this is done will be hereinafter more particularly described.

In the accompanying drawings, Figure 1 is a perspective viewillustrating the-manner in which a tuft of bristles is drawn into a ferrule. Fig. 2 is a similar view showing the tuft drawn within the ferrule and with the ends of the cord removed. Fig. 3 shows a section of a ferrule with the tuft drawn into it and cemented therein. Fig. is a perspective View illustrating the manner of attaching the tufts to a brush-bar such as is used in cotton-gin brushes. Figs. 5 and 6 are detail views illustrating the manner in which a ferrule is compressed in a notch of the brushbar. Fig. 7 is a perspective view illustrating the manner in which my improvements may be applied to brushes of other kinds than cotton-gin brushes. g .In constructing the tufts for the brush I proceed as follows: I first take a bunch of bristles A and pass a cord at around it in the mannerindicated in Fig. 1. I then dip the ferrule ,B in suitable glue or cement, pass the cord through the ferrule, and draw the tuft well up into it. I then clip the cord close to the upper edge of the ferrule, as indicated in Fig. 2, and then apply suitable glue or cement :0 until all space around the bristles and at the upper end of the ferrule is completely filled, as indicated in Fig. 3. The glue or cement which I employ is such that it will not become brittle when cold or dry, but will be somewhat yielding or elastic, permitting the ferrule to be bent or have its shape changed in the manner hereinafter described. It will be observed that I do not entirely remove the cord which is used to draw the tuft into the ferrule. If the cord Wereremoved, the glue 'or cement might not penetrate the bristles sufiiciently to firmly attach the inner bristles; but by leaving the cord in the tuft, as illustrated in Fig. 3, all the "bristles will be securely held in the ferrule.

When applying my invention to a cottongin brush, each bar 0 is formed with a series of notches D, which are preferably dovetailed or. undercut. A ferrule carrying a tuft is inserted into each of these notches and is bent or compressed by suitable tools until it takes the form of the notch and overlaps the side edges thereof, as indicated at d in Figs. 4 and 6. By this arrangement each tuft is securely attached to a bar, being held firmly against strains due to centrifugal force or to the resistance produced by the gin-saws.

If one of the tufts becomes unduly worn or cut, itmay be removed and replaced without disturbing any of the other tufts by the use of a suitable tool, which may be employed to crush or distort the ferrule until it is so loose in its notch that it may be readily removed therefrom.

The cement which I employ may of course become hard and brittle; but this is immaterial, because when it is desired to remove a worn-out tuft there is no objection to having the glue or cement crumble; but the cement remains elastic long enough after the tuft is made to permit the tufts to be assembled and attached to the brush-bars in the manner before described.

Instead of employing bristles to form the tufts I may use other suitable material.

My improvements may be applied to brushes of all kinds, and as indicating one way in which the invention may be applied to brushes other than to cotton-gin brushes I have illustrated in Fig. 7 a construction of brush-block or brush-frame suitable to admit of the ready application of tufts with ferrules constructed in accordance with my invention. In this figure 'E indicates a brushblock, and e ribs extending therefrom, which are formed with a series of notches to receive the ferrules, which are compressed and made to fill the notches in the same manner as that indicated in Figs. 4, 5, and before described. I

I of course do not limit myself to the precise construction of brush-frame shown in the drawings; but

I claim as my invention-- 1. The combination of a tuft, a ferrule at the inner end of the tuft, a cord within the 6 and as hereinferrule and partially encircling the central portion of the tuft, and glue or cementing material connecting the cord, tuft and ferrule.

2. The combination ofa tuft, a ferrule at the inner end of the tuft, a cord within the ferrule, and partially encircling the central portion of the tuft, and yielding or elastic glue or cementing material connecting the cord, tuft and ferrule.

3. The combination of a notched or recessed brush bar frame or block, a tuft, a ferrule into which the tuft is drawn and which is formed to fill the notch or recess in the brushbar and to overlap its side edges.

4. The combination of a notched or recessed brush bar frame or block, a tuft, a ferrule into which the tuft is drawn, apiece of cord partially surrounding the central portion of the tuft, elastic or yielding cement connecting the ferrule, cord and tuft, and flanges on the ferrule overlapping the edges of the notch or recess in the brush-bar.

5. The combination of a brush-bar formed with a dovetailed or undercut recess, a tuft,

and a compressible ferrule connected with the tuft and filling the notch of the brush-bar In testimony whereof I have hereunto subscribed my name.

Vitnesses:

RP. HALL, I. W. RUST.

THOMAS BRANTLEY.

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