US423506A - Brush - Google Patents

Description

(No Model M00. YOUN BRUSH.

No. 423,506. PatntedMar. 18, 1890."

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UN TED 1 STATES PATENT OFFICE.

"MCOLINTOGK'YOUNG, OF FREDERICK, MARYLAND.

BRUSH.

SPECIFICATION forming part of Letters Patent No.423,506, dated March 18, 1890.

Application filed October 6, 1888. Serial No. 287,380. (No model.)

To all whom it may concern:

Be itknown that I, McCLINTocK YOUNG, of. Frederick, in the county of Frederick and State of Maryland, have invented certain Improvements in Brushes, of which the following is a specification. j

, My invention relates to that class of brushes in which a series of tufts are seated in holes formed in rows in a wooden body or block,

transversely of the brush-body I am enabled to simplify the construction, reduce the cost of manufacture, and stiffen the body, so as to prevent it from splittingor warping out of shape. cape of individual tufts, since the fastening device, having a series of teeth, will be held firmly at one point, although it may from any reason fail to hold securely at another point.

In the accompanying drawings, Figure 1 is a perspective View showing a brush constructed on my plan, the tufts and fastenings being omitted at one end to show the construction of the body. Fig 2 is a transverse section on the line a: ozof Fig.1. Fig 3 is a longitudinal section on the line 3 y of Fig. 1, the tuft and fastening being removed atone end in order to show more clearly the construction. Fig. 4: is a cross-section of the brush-body on the line a z of Fig. 1. Figs. 5 and 6 are perspective views showing the fastening-strips in two forms.

Referring to the drawings,A represents the body of the brush, preferably constructed of a single block of wood. It is provided, as shown, with a seriesof tuft-receiving holes a, bored therein from one face. These holes are perpendicular, or approximately so, to the face of the brush, and are arranged, as shown, in rows or lines transversely of the body. The

shallow grooves b are formed transversely in the face of the block, connecting the holes in the respective rows.

I am also enabled to prevent the es.

Brepresents the tufts, each of which consists, as usual, of a bunch of fibers doubled or folded transversely at the middle and inserted endwise into the respectiveholes. O 0 represent my fastening devices, each of which consistsof a thin strip of steel or equivalent metal having one edge toothed or notched. Each strip is applied transversely of the brushbody and through the center or fold of a row of tuft-s, and is driven firmly home into the face of the body until its edge is seated in the groove 1) flush with the face of the body. The form of the teeth or projections may be modified at will. The teeth or projections are adapted to extend downward into the holes which contain the tufts and so straddle or bear upon the right of the tufts as to prevent their escape and hold them down solidly in the bottom of the deep holes or pockets, as shown. form and size in relation to the hole and the intermediate portion ofthe body that when driven home they will seat themselves firmly and immovably inthe wood. Each-strip is preferably extended across the entire width of the body. When applied as described,.the strips serve the twofold purpose of confining the tufts firmly in place and strengthening and stiffening the body, so as to prevent the same from splitting and twistin g out of shape.

The provision of thegroove b and the sinking of the edge of the strip. thereinfiush with the face are not vital features of my construction. In cheap brushes it is admissible to permit the edge of the strip'to project slightly beyond the face of the brush-body; but for various reasons the construction represented in the drawings is'preferred. Under ordinary circumstances I prefer to employ a fasteningstrip of the form shown in Fig. 5, the teeth a entering the holes on the opposite sides of the tufts which are received in the intermediate notch c. The portions 0 are extended from The teeth are to be made of such one hole to the next through the groove 1).

In the strip shown in Fig. 6 the teeth or projections 0 enter the holes to retain the tufts in place.

It is to be observed that in my brush the tooth, is firmly and rigidly supported on all sides by the walls of the hole. In this manner the tufts are held firmly inshape and se curely in position.

, I am aware that it has been proposed to seat rows of bristles or other fibers in grooves in a brush-block and to secure them in place therein by metal strips having pointed teeth to enter the wood. I believe myself to be the first, however, to seat independent tufts in a row of holes and to confine them in place by means of a transverse strip having a series of teeth which enter the'holes and the ends of I points or teeth to pierce the tufts and enter which are of suitable form to straddle or bear upon the tufts as distinguished from sharp the wood. I I

Having thus described my invention, what I claim is 1. In abru sh, the stock or-body having holes therein, tufts seated in said holes, and transverse fastening-:strips,-each passing through a series of tufts,and provided With teeth or projections extending down within the holes and bearing upon the tufts therein, whereby said teeth are caused to hold the tufts firmly in place.

2. In a brush, the combination of astock or body having holes therein, tufts seated in the holes, and transverse fastening-strips extending through the folds orbights 6f the tufts, and each provided with a series of teeth or projections which enter the holestoconv fine the tufts, said teeth having their ends notched or indented to embrace or straddle the tufts, as shown.

A brush-block provided in its face with rows of tuft-receiving holes, and with shallow transverse grooves intersecting the holes, but terminating short of the edges of the block.

4. In a brush, a block having holes therein, 7

in combination with folded or doubled tufts inserted in said holes, anda metal fasteningstrip extended through :a series of tufts, and

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