US1436916A - Nailless paintbrush - Google Patents

Description

w. SHULMAN AND MERGER; NAILLESS PAiNTBRUSH.

LICATION FILED DEC 13 l APP 921. %36g 1 6o V Patented Nov. 28, 1922.

w- I IN VENTOR v ATTORNEY Patented New. 28, 1922..

HARRY SHULMAN AND FRANK JOEBGER, OF BEQOKLYN, NEW YORK;

NAILLESS PAINTERUSH.

- Application filed December 13, 1921. Serial No. 521,981.

residing at Brooklyn, county of Kings and State of laew York, both citizens of the United States, have invented certain new and useful Improvements in Nailless Paintbrushes, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

The present invention relates to a flat paint brush having a tuft of bristles glued within one end of a ferrule and a handle fitted within the other end, and a flat ferrule thus enclosing the handle and bristletufts at their junction.

The improvement consists in pressing a row of studs, with a suitable multiple pointed tool, from the metal of the ferrule into the substance of the handle and bristle-tufts.

Such rows of studs very strongly engage the wood of the handle and the bristle-tufts, so that neither is liable to be loosened from the ferrule.

the present improvement, the ferrule, when the parts of the brush are assembled subjected at the end embracing the handle to opposed rows of tapering punches which press rows of conical studs from the ferrule int the substance of the handle upon both sides of the ferrule sinniltaneously.

1 L repetition of the operation upon the opposite end of the ferrule serves to press the studs into the tuft of bristles and the handle and tuft are thus securely and permanently locked .vithin the ferrule.

The invention will be understood by reference to the annexed drawing, in which Fig. 1. shows one side of a flat brush provided with the improvement; Fig. 2 is a perspective view of the ferrule in readiness for the application of the handle and bristles thereto; Fig. 3 is a longitudinal section on line 33 in Fig. 1 showing the indentation of the stuls into the substance of the handle and bristles; Fig. l is a section on line 45-4: in Fig. 1; and Fig. 5 is a perspective view of one of the dies for pressing the studs from the metal of the ferrule.

Fig. 1 shows the brush provided with the ferrule 65, the handle 7 and bristle-tuft 8.

The ferrule in the finished brush shown in Fig. 1 has two rows of indentations 9 therein near its opposite ends; such indent ens forming studs 10 which are shown in Fig. 3 pressed the wood and bristles respec tively, near the opposite ends of th e ferrule. l1 igure shows one of the dies ll formed with a row of punches 12 upon one edge, such dies being used in pairs with the punches opposite to one another.

Such. dies can be mounted in an ordinary foot-press, and when the parts of the brush are assembled with the handle and "tuft insert-ed in the ferrule which embraces the handle is placed between the dies, and the opposed rows of studs formed in the ferrule erinanently indenting the opposite sides of the handle as shown in Fig. 3. ld hen the ferrule is thus locked to the handle, the opposite end of the ferrule is subjected to the same dies, and the studs pressed into the bristle-tufts, securing them most effectively in the ferrule.

Two rows of studs are shown, to avoid crowding the holes together in a single row, which would bring the holes so close to gether that the studs would not operate in eividually in grasping the bristles. To obtain an individual effect from each stud, the holes in the adjacent rows are alternated in their respective rows,v to' operate on the bristles at different distances from the ends of the bristles.

In the manufacture of brushes according to this invention it is common to secure the shank of the bristles together with glue when fitted in the ferrule, and glue is allowed to harden consideralfl before the stu.d:-; are indented from the ferrule into the opposite sides of the brist e--tuft.-;.

The ferrule" is completely shaped as shown in Fig. 2 before the adjacent ends of the handle and bristles are inserted therein; and the only labor required after the parts are assembled is to subject the opposite endportions of the ferrule to the dies which form the studs therein; and this operation is exceedingly brief, and operates much more effectively and accurately to lock the parts together than the nails heretofore used; and the construction also greatly sti'lfens the ends of the ferrule so that they cling closely to the wood and bristles.

It Will thus be seen that the invention reduces the cost of the brush and improves its eppearenee and quality, While securing a better finish and more permanent engagement of the bristles to the handle.

Having thus set forth the nature of the invention What is claimed herein is:

1. The method of securing a fiat tuft 01" bristles Within a sheet-metal ferrule, Which consists in gluing together one end of the bristles assembled in the form desired for the tuft, and permitting said glue to harden then fitting a flat sided ferrule upon the said tuft and pressing roWs of studs from the metal of the ferrule into the substance of the cemented bristles.

2. The method of securing a flat tuft of HARRY SHULLW FRANK JULIE-1b

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