US1688318A - Brush - Google Patents

Description

Oct. 23, 1928.

A. .ALBRIGHT, JR I BRUSH Filed June 9, 1926 ATTORNEY Patented 23, 1928.

UNITED STATES ANDREW ALBRIGHT, J'RL, OF -MAMI BEACH, FLORIDA.

BRUSH.

Application filed June'f),

This invention relates to brushes more especially adapted for use as glue brushes, although the brush may be used for other p.urposes. Objects of the present invention are to provide a brush which is especially desirable for use as a gluebruslradapted to stand the heat of the meltedglue, andto provide abrush of that character in which the parts thereof are practically held together as a solid united whole. lVhile it is preferable to apply the invention to brushes which are setin rubber, the invention. is not necessarily so restricted,

These being among the objects of the present invention, the same consists of certain teatures of construction and combinations of parts to be hereinafter described and then claimed with reference to the accompanying; drawings illustrating a preferred eml'iodiment ot the invention and in which,

Fig. av sectional elevation of a glue brush according to the present invention, except that the brush member and the handle member are shown as not fully assembled;

Fig. 2 is a sectional elevation of the iinproved brush complete;

Fig. 3 is a section on the line 3--3 Fig. 1, a space being shown between the handle and the brush member; t

Fig. 4 is transverse section on the line 1-1Fig.2; and

Fig. .5 is a transverse section on the line 5 Fig; 2. v i e Referring to the drawings, the bristles 10 are at theirbutt ends preferably set in a-suitable rubber'or other cementitious composition to form a cemented base 11. Preferably the base 11 is secured tightly within a metal ring; or band 12, so that the brush head comprises the bristles 10, the base 11 and the ring 12.

A. sheet metal cap 13 is provided which is preferably composed of copper and comprises an annulus forming a top 14:, a skirt 15 extending from one edge of the top 14:, and a neck 16 extending outwardly from the aperture in the top 1 1 to provide a more or less ex tended bearing surfacefor the brush handle. This cap 13 is best made of one piece of sheet copper struck up into the desired shape A plug 17 is provided and it is preferably composed of wood or other suitable non-metallic material. The plug 1'? inserted within the skirt 15 of the cap and it should snugly fit the inner walls of the skirt and the top 1 1- when it is pressed home against the top 14.

After theplug 17 has been snugly titted into 1926. Serial No. 114,673.

the plug or filler 17, through the aperture of the top 14 and. through the neck 16. This is preferably done by hand and the assembler will be able to push the handle 19 to about the posit-ionshown inFig/l. [The handle and the brush unit can be thus secured more or less tightly together, but probably theicomplete usable brush could not be assembled by hand into the brush of Fig. 2 and obtain the desired rip-id assembly. a

. 1t ispreierred under the present'invention that when the parts are assembled by hand there will. be a substantially snug fitin' the centralhole 20 in the base 11, but that there will be formed by the central np'eniu gv 21in the plug or filler 17 a slight annularspace around the handle. A somewhat greater annular space would be provided between the neck 16 and the handle 19 duetothe fact that the plug 17 extends inwardly slightly beyond the inner? wall of the neck 16, assho-wu in Fig.1. y

The parts being prefer-aloha constructed as des ribed and assembled preliminarily as'in 1, the parts are subject-ed to powerful mechanical pressure with a view to forcing the handle with adrive fit into the position shown in Fig. 2 to form a complete brush. By finishing the brush to this point under heavy pressure, the result is that the plug or filler 17 is firmly squeezed against the skirt 15, and as the said plug 17 is" more or'less expanded in lines parallel with the axis of the brush. the rine: or hoop 12 is maintained against the upset edge 18. It is preferred that in this way the parts within the brush be squeezed up. The result-of the squeezing action is that frequently the plug or filler 17 V is cracked or fractured in a number of places, as for example in Fig. 4, so that a very firm and solid filling is eventually afforded by the pluu'17. The top 14: of the cap extending at it does over the probably cracked and fractured plug 17 hides the plug and the fractures and presents a sightly rather than an unsightly appearance to the complete brush of Fig; 2. Furthermore, the extra pressure to which the parts are subjected in assembling forces the handle through the neck 16 in such way as toleave marks on the outer surface of the, handle indicating that the handle is firmly and solidly united to the neck. 'The neck 16 furnishes a central bearing for the brush handle 19, which bearing is more or less extended according to,'but

are driven through small perforations in the skirt 15 and the ring 12, through the base 11 andinto the lower end of the handle 19.

It has been found in practice that a brush substantially as shown anddescribed, having a cap offcopper and with the parts firmly "united and bound together substantially as described, furnishes a most desirable brush for use with hot glue, as the heat of the glue does not result in loosening any of the parts,

and the'samemay be readily cleaned after use withoutincurring a similar danger. The advantage of copper 1n a glue brush 1s that it will not rust from the effect of the water in the glue.v Enclosing ring shaped sheets or caps of metal inpaintbrushes can be made ofiany metal, which is usually sheet steel, and'there is no objection to this in a paint brush because paint does not contain water, while glue does. i The use of theword cementtin the claims is not intended to restrict the invention to what is usuallyknown, as cement in the brush art, but the word is inclusive of any cementitious material, such as glue or rubber composition.

What I claim as new is: v

1. In a brush of the character described, the combination ofa one piece sheet metal cap, comprising an apertured top, a skirt, and a neck which extends v from the aperture in the top, a non-metallic plug in the cap, bristles having their butts cemented together and disposed in the skirt ofthe-cap, a metallic ring tightly secured on the cemented butts of the-bristles and provided with holes, the plug being located between the cap-top and the cemented butts, a tapering handle, the larger endof which extends within the butts and tightly fits the aperture and the neck and wedges the cemented butts ofthe bristles in the cap, the neck providing an extended bearing surface throughout for the handle, and fastening nails extending through the skirt, the holes in the ring, the cemented butts and into the handle.

2. In a brush of the, character described. the combination of a copper cap-comprising an apertured top, a plain, cylindrical skirt, and a neck extending from the aperture in the top, a woodenplug located in the cap,

bristles having their butts set in rubber and disposed in the skirt of the cap, a metallic ringtightly secured on the butts, the wooden plug being located between the cap-top and .thebutts the edge of the ring'bearing 0nthe edge of the plug and the edge of the skirt be ing inwardly upsetaround the ring, and a tapering handle, the larger end of which extends within the butts and tightly fits the aperture, the neck and the plug, and wedges the butts and the plug, said plug being confined between the inner edge of the ring and the apertured top of the cap, and said plug being under a high state of compression be-- tween the handle and the skirt, said top hiding said plug and anyfractures thereof due to such state of compression, and said neck providing handle.

I ANDREW ALBARIGHT, JR.

an extended contact surface for the

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