US2296922A

US2296922A - Strip brush

Info

Publication number: US2296922A
Application number: US360460A
Authority: US
Inventors: Charles J Gross
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1940-10-09
Filing date: 1940-10-09
Publication date: 1942-09-29
Anticipated expiration: 1959-09-29

Description

C. J. GROSS Sept. 29, 1942.

STRIP BRUSH Filed 001;. 9, 1940 Patented Sept. 29,1942

STRIP BRUSH Charles J. Gross, Melrose, Mam, assignor to United Shoe Machinery Corporation, Flemington, N. L, a corporation of New Jersey Application October 9, 1940, Serial No. 360,460

9 Claims.

This invention relates to strip brush material adapted to be used in the manufacture of various types of brushes and to a method of making such a strip.

It is well understood that brush material may be prepared in strip form and then utilized for the construction of various sorts of brushes, such as brooms, paint brushes, and the like. It is also common to employ this material for the construction of rotary cylindrical brushes in which the strip material is wound around a hub or core. The brush material, according to the use to which the brush is to be put, may be of various sorts including animal hair, vegetable fibers, and various types of wire. For the sake of convenience, all these types will be hereinafter referred to as bristles" without thereby restricting the invention to true bristles. It will be understood, furthermore, that, whil the strip material which is usually employed is mild steel, the exact kind of material which is used is unimportant to the invention so long as it is self-sustaining and sumciently flexible to permit formation of the brush as desired.

A strip brush, according to the present invention, comprises a substantially u-shaped channel strip and groups of brush elements held in said channel by marginal teeth integral therewith and extending across adjacent groups of bristles to grip them on the strip. In the illustrated con: struction the strip is provided with a series of bristle-receiving apertures or notches, and the groups of bristles are received in these apertures. Also, as illustrated, the teeth which hold the bristles in place extend diagonally in respect to the axis of the strip.

In accordance with the method, a margin of the strip is provided with teeth which are bent to hold the brush material upon the strip, after which, the strip is doubled into a channel. As herein illustratively described, the method comprises also cuttin the strip to provide a series of apertures near the edge of the strip and to form, by cuts transverse to the margin, diagonally extending teeth. These teeth are bent around a line substantially parallel to the longitudinal axis of the strip, usually over the body of the strip, to clamp groups of bristles positioned in the apertures. The strip is then formed into a channel with the bristles extending out of the channel through the previously mentioned apertures.

The invention, in other aspects, will best be understood from a consideration of the followin specification taken in connection with the accompanying drawing, in which:

Fig. l is a diagrammatic view showing the successive steps in the formation of a strip brush structure in which the bristles project outwardly from both sides of the strip and in which the strip is provided with teeth at each margin thereof; g r

Fig. 2 is a similar view showing a modified arrangement wherein the ends of the bristles abut the bottom of the channel and only one set of teeth is required; and v Fig. 3 is a plan view of a portion of a strip showing the diagonal arrangement of the teeth upon the margins thereof.

In the first instance, a strip I0 of flexible; selfsustaining material, which is usually metal and may be mild steel, is provided upon its margin with a series of apertures or notches I2 between which are teeth IA. The sides of these teeth extend diagonally of the length of the strip transversely to said margin and are formed by cuts transverse to the margin. As the next step in the formation of the brush, although the exact order is not important, the teeth will usually be bent about a line I8 parallel to the middle or the longitudinal axis II of the strip to extend upwardly therefrom and, by providing notches I3,

will facilitate the placing of bunches or groups of bristles 20 in the apertures I2. The teeth are then bentfurther toward the body of the strip to bring them into the position shown at 22 where they overlie adjacent groups of bristles and clamp them in position on the strip. The strip may then be bent progressively, as indicated at 24, to bring it into a channel form, shown at 26, in which the teeth lie within the channel and the bristles project upwardly therefrom, extending out through the apertures I2.

If desired, the arrangement illustrated in Fig.

2 may be substituted in which teeth I40 are formed between apertures I20 along only one margin of the strip and in which the other margin I30 is left plain. Preferably this marginal portion I30 is bent upwardly at right angles to the body of the strip to facilitate the'positioning of groups of bristles 200 in the apertures I20 with the inner ends abutting this margin I30. The teeth I40 are then folded over about a line I to a position indicated at 220. After this, one margin may be bent progressively, as at 240, until it is brought parallel to the upstanding margin I30 to form a channel 260 with the butt ends of the bristles clamped tightly within the channel and the flagged ends 210 projecting outwardly thererom.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A strip brush adapted to be wound around a core to form a rotary brush, said strip brush comprising an elongated substantially U-shaped channel strip and groups of brush elements transverse to the length of said strip and held in said channel by teeth formed along the side margin of said strip and integral therewith, with the sides of the teeth extending transversely to said margin and extending across adjacent groups of bristles to grip them-against the strip.

2. A strip brush comprising a channel strip and groups of bristles retained in the channel by means of integral teeth extending across adjacent groups of bristles within said channel, said teeth having their integral bases bent around a line parallel to the longitudinal axis of the strip and extending diagonally thereto.

3. A strip brush comprising a channel strip provided with a series of bristle-receiving apertures, groups of bristles in said apertures retained in the channel by means of teeth integral with the strip and joined to the side of the channel between said apertures, said teeth extending across adjacent groups of bristles within said channel.

4. That method of making a strip brush which consists in cutting teeth upon a margin of a strip of self-sustaining flexible mitterial, placing brush material transversely of the strip and bending the successive teeth toward the strip to hold the brush material thereon, and then doubling the strip into a channel with the teeth inside the channel.

5. That method of making a strip brush which consists in forming teeth upon the margin of a strip of flexible self-sustaining inaterial with the teeth extending at other than a right angle to the length of the strip, placing brush material transversely of the strip and holding it in position thereon by folding the teeth over the brush material, and bending said strip and brush material along a longitudinal axis of the strip to impart to the strip a substantially U-shaped cross section.

ano es e 6. That method of forming a strip brush which consists in bringing together a strip of self-sustaining flexible material, which is provided with teeth along a margin 01 the strip, and groups or bristles arranged transversely of the strip and projecting beyond its edges, bending these teeth across the bristles to hold the groups of bristles to the strip, and folding the strip and bristles about an axis extending lengthwise thereof thereby to provide a substantially U-shaped casing for the U-shaped groups of bristles.

7. That method of forming a strip brush which consists in bringing together a strip of selI-sustaining flexible material which has teeth projecting from an edge thereof and groups of bristles arranged transverseLv of the strip and projecting beyond its edges, bending these teeth across the bristles about a line or told parallel to th axis or the strip to'hold the groups of bristles to the strip, and folding the strip and bristles about an axis extending lengthwise oi the strip thereby to provide a substantially U-shaped casing for the U-shaped groups of bristles.

8. That method of forming a strip brush which consists in assembling groups of bristles and a strip having a series of teeth joined to the body of the strip and having bristle-receiving notches at the points where the teeth join the strip, placing said groups in said notches, folding the teeth across the bristles to grip them to the strip, and then bending the assembled strip into a substantially U-shaped form along a longitudinal axis of the strip.

9. That method of forming a strip brush which consists in assembling groups of bristles and a strip of self-sustaining flexible material having marginal teeth which extend diagonally to the length of the strip, folding uccessive teeth about a line substantially parallel to the longitudinal axis or the strip to overlie successive groups of bristles thereby to grip the bristles to the strip, and folding a portion of the strip to cover said teeth and hold them and the bristles against the body of the strip.

CHARLES J. GROSS.