US2023434A

US2023434A - Brush

Info

Publication number: US2023434A
Application number: US737187A
Authority: US
Inventors: Carl J Nagl
Original assignee: U S BRUSH Co OF OMAHA
Current assignee: U S BRUSH Co OF OMAHA
Priority date: 1934-07-27
Filing date: 1934-07-27
Publication date: 1935-12-10
Anticipated expiration: 1952-12-10

Description

1935- I c. J. NAGL. 2,023,434

BRUSH Filed July 27, 1954 I ATTORNEYS Patented Dec. 10, 1935 BRUSH Carl J. Nagl, Omaha, Nebr., assignor to U. S. Brush Company of Omaha, Omaha, Nebn, a corporation of Nebraska Application July 2'7, 1934, Serial No. 737,187

7 Claims.

My invention relates to brushes and brush making. The objects of my invention are to provide a brush structure wherein the head, in which the bristles or other fibrous materials are held, may be of sheet metal and be formed integrally with a handle; to provide a brush wherein the retention of the bristles is effected without the use of adhesives or by stitching or tying, and wherein the bristles are gripped mechanically in a folded formation such that the same cannot become loose or be withdrawn from the head; to provide a brush wherein the tip or working edge projects laterally of and is substantially parallel with the handle; to provide a brush structure wherein a pluck or group of long bristles or other fibres may be spread and arranged so that the several longitudinal portions thereof may be clamped simultaneously in the head portions of a w plurality of the brush bodies, whereby the initial clamping of the spread bristles, preliminary to the formation of a plurality of the brushes, may be effected prior to the cutting of the bristles into lengths suitable for the individual brushes; and in general to provide a durable and efiicient brush which may be inexpensively produced, with a minimum waste of the materials entering into the formation thereof, and by manufacturing operations which may be effected with great rapidity.

In the accompanying drawing Fig. 1 is a plan view of a formed blank for use in making a brush in accordance with my invention, Fig. 2 is a side view of the same, Fig. 3 is an end view thereof, Fig. 4 is a plan view showing a plurality of the formed blanks with bristles therein ready for preliminary clamping, Fig. 5 is an end view of the same, Fig. 6 is a plan view of one of the brush units after the initial clamping of the bristles and the cutting of the latter to separate the units,

Fig. '7 is an end view of the same, Fig. 8 is a plan view of one of the brush units after the folding of the head, Fig. 9 is an end view of the same, Fig. 10 is a plan view of I the brush after the final forming operation in which the head is flattened and the handle portion curled to a tubular formation, Fig. 11 is an end view of the same, Fig. 12 is a longitudinal section on the line l2l2 of Fig. 10, showing the bristle-ends trimmed to form the tip or working edge of the brush, and Fig. 13 is a side view of the completed brush.

The brush selected for illustration and description herein, as typical of my invention, is a small cosmetic brush for use on eyebrows or eyelashes, and in Figs. 1 to H, inclusive, of the drawing the parts are shown on a full-size scale, while Figs. 12 and 13 are drawn on an enlarged scale. In carrying out my invention, the blank from which the head and handle of the brush are formed, is an integral strip of thin sheet-metal, comprising a rectangular head It having at one end a trapezoidal tabor tapering portion I I, and at the other end being connected with the handle portion l2 by a narrow neck portion I 3, the latter being formed by the cutting of a pair of triangular tongues M from the edges of the strip. The tab 10 I! and tongues M are formed initially to extend upwardly from the head It), and the edges of the handle portion are curled upwardly, as shown in Figs. 1, 2, and 3, the fiat form of the blank being represented by dotted lines in Fig. l.

A plurality of the formed blanks are arranged in parallel transversely spaced relation, and a pluck or group of bristles B is laid across the several heads [0, the bristles being spread uniformly between the tongues 14 and the end-tabs 2Q II, as shown in Figs. 4 and 5. The tongues. l4 and end-tabs II are then folded down over the bristles, whereby the same are held against the heads in the spread arrangement, and the bristles are then cut intermediatethe heads to sepa- 2 rate the several brush units, so that each appears as shown in Figs. 6 and 7.

The next operation in the formation of the brush is the bending of the head symmetrically of its longitudinal center to a U-shape, as shown 30 in Figs. 8 and 9, whereby the oppositely projecting ends of the bristles are raised into parallel relation. The final forming operation consists in flattening the U-shaped head, to bring the sides thereof closely together, and simultaneously curl- 35 ing the handle portion l2 to the tubular formation shown in Figs. 10, 11, 12 and 13. After the final forming operation, the bristle-ends are trimmed to remove any irregularities thereof, such as indicated in Fig. 11, and provide a uni- 40 form tip or working edge, as shown in Figs. 12 and 13.

It will be seen that in the completed brush the bristles are securely held in the head, being in a folded or flattened formation, and retained 45 between the folded sides of the head by the tongues 14 and tab H. By the tapering formation of said tongues and tab, the end portions thereof may extend past each other sufficiently to assure the clamping of all of the bristles, with- 50 out the tongues overlapping the tab to form an added thickness of metal in the final formation. The head and handle of the brush being integral, manufacture of the brush consists merely in a series of very simple metal-forming operations, 55

and the cutting of the bristles to the desired length after the clamping of the same in the brush-head, all of which may be efiected very rapidly and inexpensively, so that the brushes may be produced at a very low cost.

Now, having described my invention, what I claim and desire to secure by Letters Patent is:

1. A brush comprising a. head of sheet-metal, a tab at one end and tongues at the other end of said head, bristles located between said tab and tongues on said head, said tab and tongues bentv over the bristles and avoiding each other and extending past each other, to assure the clamping of all the bristles.

2. A brush comprising a head of sheet-metal, a tab at one end and tongues at the other end of said head, bristles located between said tab and tongues on said head, said tab and tongues bent over the bristles and clearing each other and extending past each other, to assure the clamping of all the bristles, said head with said tab and tongues being bent symmetrically of their longitudinal center, to form a U-shaped head portion.

3. A brush comprising a head of sheet-metal, a tab at one end and tongues at the other end of said head, bristles between said tab and tongues on said head, said tab and tongues bent over the bristles, and avoiding each other and extending past each other, to assure the clamping of all the bristles, said head, tab and tongues, clamping the bristles, being bent symmetrically of their longitudinal center, to form a U-shaped head portion and a tubular handle portion formed integral with said head.

4. A brush comprising a head of sheet-metal, a tab at one end and two tongues at the other end of said head, extending upwardly from said head, bristles extending transversely from said head and definitely located between said upwardly extending tab and tongues, said tab and tongues being bent over the bristles to hold them firmly in position and being bent with said head symmetrically of their longitudinal center to form a U-shaped head portion.

5. A brush comprising a head of sheet-metal, a tab at one end and two tongues at the other end of said head, all extending upwardly from said head, bristles extending transversely from said head, definitely located between said upwardly extending tab and tongues, said tab and tongues being bent over the bristles to hold them firmly in position, being bent with said head symmetrically of their longitudinal center to form a U-shaped head portion and being fiattened to bring the sides of said U-shaped head closer together.

6. A brush comprising a head of sheet-metal, a tab at one end and two tongues at the other end of said head, all extending upward from said head, bristles extending transversely from said 5 head and being located between said upwardly extending tab and tongues, said tab and tongues being formed to clear each other and to extend past each other after being bent over the bristles,

said head, tab and tongues being bent symmetrically of their longitudinal center to form a U- shaped head portion.

'7. A brush comprising a head of sheet-metal, a tab at one end and two tongues at the other end of said head, all extending upward from said L CARL J. NAGL.