US856284A - Brush. - Google Patents

Description

PATENTED JUNE 11, 1907.

r MUMFORD.

BRUSH.

H mm) m JOSEPH F. MUMFORD,.OF PHILADELPHIA, PENNSYLVANIA.

BRUSH.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed June 30,1903. Serial No. 163,815.

To all whom it may concern:

Be it known that I, Josnrn F. MUMFORD, a citizen of the United States, residing in Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Brushes, of which the following is a full, clear, and exact specification.

My invention relates particularly to that class of brushes known as open center brushes, in which the bristles or other liber are secured within a suitable holder.

The object of my invention is to provide a brush of simple and eflicient construction having provision whereby the bristles and also the bush handle may be effectually secured to the holder, as will be hereinafter more fully described and particularly claimed.

Referring to the drawings, Figure 1 represents a blank, from which a flat brush binder vis formed. Fig. 2 is an inverted plan of one of the brushes a portion of the bristles being left out so as to show a portion of the metallic rings and a portion of the handle. Fig. 3 is a plan view of a prepared round brush binder. Fig. 4 is an interior sectional view of the finished binder and brush knot, the handle being omitted in this view, section being taken on the dotted line b, b, Fig. 2. Fig. 5 is a sectional view of the finished brush, section being taken on the dotted line a, a, Fig. 2.

In carrying out my invention, I employ a blank of thin sheet metal, similar to the shape of that shown in Fig. 1, which shape is used for making a flat brush with round ends; a slit 7 is cut longitudinally through a portion of the center thereof, as shown in Fig. 1, the slit terminating at equal distances from the outer circular ends of the blank; triangular tongues 4 are further struck from the tenninus oi the slit to the inner dotted line 9, Fig. 1. The blank thus slitted is further stamped on the dotted lines 9, 9, the outer portion 2, of Fig. 1, being turned downwardly at an angle to the channel base 1, as in Figs. 4 and 5, the inner portion 3 being also turned downwardly at an angle to the interior of the channel base, as in Figs 4 and 5. It will be seen that the tongues 4 cut in the circular ends of the portion 8 will permit that part to be turned in very readily, as shown by the interior view in Fig. 4. The plans Figs. 2 and 3 show the inner bottom view of the prepared binder; a series of tapering concentric flat rings 5 of metallic alloy are secured to the inner side of the channel base 1, the said rings being conveniently separated. In Fig. 3, for convenience of description, the tongues 4 are shown as not having been pressed down, as they are in Fig. 2.

In making a flat brush, the knot of bristles or brush'fiber 6 is first clamped by a convenient means (not shown), so as to make the knot conform to the-shape and size of the channel formed by the binders 2 and 3; the brush channel, which has been previously supplied with the flat rings of metal alloy, is then placed over the assembled and shaped brush knot. The inner binder 3 is not at this stage of the operation pressed down entirely to its place, but is left slightly open, so that the brush end may be the more freely inserted within the open channel, the knot being forced down into the said channel and around the tapering rings of alloy 5, so that the said rings will project downwardly into the mass of brush stock 6 and to some degree wedge the brush stock assembled therebetween. When the brush knot end has been properly placed within the channel, the inner binder flange 3 is pressed down and outwardly against the ortion of the brush knot which is now con 'ned within the channel, the outer binder 2 and the brush knot 6 being conveniently supported against said pressure. When the binder 3 has reached an angle nearly parallel with the outer binder 2, the metal alloy rings 5 are caused to melt and envelop that portion of the brush knot end,which is adjacent to said alloy, the alloy melting at a temperature that will not injure the brush fiber or bristles; the melting being done by the application of heat to the outward side of the brush channel base (by a convenient means not here shown). When the alloy rings have been melted more pressure s applied to the inner and outer binders 2 and 3, and the alloy and brush knot end, and the mass is compressed com actly and rigidly together.

T e hollow space or socket 8 which is formed by bending the inner binder 3 downwardly as shown in the sectional views in Figs. 4 and -5, is utilized as a. convenient means to hold a brush handle 8 (see Figs. 2, 4 and 5). The said handle, fitting neatly within the socket, is then applied thereto and when in place, as in sectional view in Fig. 5, further pressure is applied to the outer binder 2. so as to inwardly compress the binders and brush knot with the securing alloy rings and cause the inner binder 3 to the more compactly embrace and secure the handle 8 within the socket 8.

In making round or oval brushes with p open center, the method just described is followed. The lan in Fig. 3, showing the position occupied by the alloy ring 5 and the outer binder 2 or, as it may be'called, a ferrule in the case of round or oval brushes. In the plan shown, the inner binder 3 will assume more entirely the shape orfo'rm of the tongues 4 because of the circular-form of the handle socket.

Having thus described my invention, what I claim as new and desire to secure by'Letters Patent is,

1. A brush comprising a member provided with an endless channel and a brush knot secured between the side walls of the channel.

2, A brush com ris'inga memberprovided with a channel, a rush knot extending into" the channel, and means commingled with the bristles of the brush knot for securing the 1 brush knot within the-channel.

3. A brush'comprising a handle, a member provided with an endless channel surrounding the handle, and a brush knot secured between the side walls of the channel.

4. A brush comprising a handle, a member rovided with an endless channel surrounding the handle, a brush knot extending into the channel, and means commingled with the bristles of the brush knot for securing the brush knot within the channel. i

5. A brush comprising a single piece of sheet metal forming an endless channel and a brush knot secured between the sidewalls of the channel.

6. A brush comprising a single piece of sheet metal forming an endless channel, a

brush knot extending into said channel, and

meanscommingled with the bristles of the brush knot for securing the brush knot within the channel.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses.

J OSEPH F. MUMFORD.

Witnesses:

JOHN F. HOY, JOSEPH F. MAGEE.

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