US1372108A

US1372108A - Paint and other brush

Info

Publication number: US1372108A
Application number: US368494A
Authority: US
Inventors: Timmis Albert Henry
Original assignee: Hamilton & Co London Ltd
Current assignee: Hamilton & Co (london) Ltd; Hamilton & Co London Ltd
Priority date: 1920-03-25
Filing date: 1920-03-25
Publication date: 1921-03-22
Anticipated expiration: 1938-03-22

Description

A. H. TIMMIS.

PAINT AND OTHER BRUSH.

APPLICATION FILED MAR. 25. I920.

Patented Mar. 22, 1921.

9, WWW

lnvenfolf U Witnesses. 9Q/KQ'7W UNITED STATES PATENT OFFICE.

ALBERT HENRY 'IIHMIB, 0F HARBCTW, ENGLAND, ASSIGNOB. T0 HAMILTON &; COM- rm (LONDON) LIMITED, 01 LONDON, ENGLAND.

PAINT AND OTHER BRUSH.

' Specification of Letters latent.

Patented Mar. 22, 1921.

Application filed March 25, 1820. Serial No. 868,484.

\ improved means for the attachment of the bristles to the handle.

It is a general practice to secure the bristle knot to the handle either by means of a connecting ferrule or ba cementin it into a socket in the said han 1e, the sai socket beingin some cases formed with slits and boundaround with twines after the bristles have been inserted. Both these methods of attaching the bristles to the handles of brushes are, however, open to objection 111 practice as it is found that the connection tends to become loose with use, mainly'due to the fact that the ferrule loses its grip on the handle or that the lip of the socketsplits.

Acoording to the invention I insert the bristle knot, the end of which has been dipped into a cement, such as rubber cement,

through a ferrule of ductile metal, of a shapeand dimensions such that it can be inserted into, and of a length such that when so inserted its .end projects for a short amount from the socket. i

The ferrule with the inserted bristle knot is introduced into the handle socket and the projecting end of the said ferrule is then bent outward and downward so as to be folded over the lip of the socket. This can be effectively accomplished by a taper die and the existing modes of attachment and prostood, I will describe it by reference to the accompanying drawing, in which Figure 1 s a sectional view of a brush made according to the invention.

2 1s a vertical section of the ferrule detac ed F1 3 is a sectional view of th ha e detailed, and e ndl F g. 4 1s a similar view to Fig. 1, but illustrating an intermediate stage m the manufacture of the brush.

a indicates the handle of the brush and b the socket or recess rovided therein. a ndlcates the ferrule of ductile metal which 1s, as above described, of a shape and diameter tofit snugly in the said socket or recess b and of a length such that, when placed 1n the latter, 1t projects to a short extent .therefrom. d indicates the bristle knot which is of a, size to fit into the ferrule a.

In manufacturing the brush the end of the bristle knot d is dipped into a suitable cement, such as rubber cement, and the said knot 1s then passed into the ferrule a. The ferrule with the knot 03 in place is then inserted into the socket or recess 6 of the handle a, as shown in Fig. 4. Finally the PIO]BClJ1Ilg end of the ferrule is then bent outward and downward, say by means of a die, so as to clasp the lips of the socket, this operation constricting the said ferrule and the socket lip so as to cause it to gripthe bristle knot d, as shown in Fig. 1.

As will be evident the process of thus turning over the projecting end of the ferrule and constricting the diameter of the lipof the socket b imparts an undercut formation to the said socket and ferrule, whereby the bristle knot is securely held in place in the handle. Moreover, as the lip of the socket is incased or bound in metal it is protected a ainst splitting.

It 1s to be un erstood that the invention is applicable to brushes of the usual round, oval or flat shapes.

Claims.

1. The method of manufacturing paint and other brushes, which consists in applying adhesive material to the end of the bristle knot, passing the end of the bristle knot into a, ferrule of ductile metal, then inserting a portion of the ferrule into a socket in the brush handle, then crimping the rojecting portion of the ferrule over the lip of the socket, so as to constrict the diameter of the lip of the socket and the ferrule, thereby causin the restricted lip and ferrule to 'p theiristle knot and secure it within-t e socket.

2. In a. brush, the combination with a handle rovided with a socket, of a, ferrule adapte to fit in said socket and of such length as to project therefrom, said ferrule having outwardly and downwardly turned portions to engage the lip of the socket, and a bristle knot, the outwardly and downwardly turned portions of the ferrule bein crimped upon, restricting the diameter 0 and reinforcing the lip of the socket, the

said restricted llfinand crimped ferrule gripping thebristle 0t and securing it within the socket.

' ALBERT HENRY TIMMIS.