US1347648A - Brush - Google Patents

Description

J. MORRISON, JR.

BRUSH. Mmc/mou mm FEB. 4, 1920.

1,347,648, Patented July 27, 1920.

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BRUSH.

APPLICATION FILED FEB. 4| 1920.

1,347,648, Patented July 27, 1920.

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J6 I gII III UNITED STATESl JOHN MORRISON, JR., OF GLENS FALLS, NEW YORK.

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Specification of Letters Patent.

Application led February 4, 1920. Serial No. 356,194.

To all whom t may concern.'

Be it known that I, JOHN MORRISON, Jr., a citizen of the United States, residing at Glens Falls, in the county of Narren and State of New York, have invented certain new and useful Improvements in Brushes, of which the following is a full, clear, and concise description.

My invention relates to brushes, and more particularly to brushes of various types used, mostly by hand, for polishing shoes, brushing clothes, grooming horses, removing crumbs from tables, etc.

By my invention I seek to make a brush provided with a back made of sheet metal and containing a moldable material or cement for holding the bristle tufts, the brush as a whole being comparatively light and strong, and adapted to be made up at a relatively small cost.

In the past many manufacturers have endeavored to market a brush of the genera-l type here contemplated and having a metal back and a cement filling contained therein for holding the bristles. Such brushes, however, have not been very successful, the chief objection being that they were heavy owing to the weight of the cement carried. It was necessary to employ enough cement or other moldabie material to properly secure the bristle tufts in position and also to get a good anchorage as between the metal backs and the filling, and thus the amount of iilling material used rendered the brush rather too heavy for general-satisfaction.

lVh-at I seek to do, therefore, is to make a' brush having a metal back and a cement facing for holding the bristles, the quantity of cement used, however, being relatively small. I accomplish these results by using a wooden core in connection with the cement as virtually a part of the filling, and by see curing the wooden core directly to the metallic portion of the brush back, so as to avoid the necessity for anchoring the cement directly to the metallic portion of the brush back.

Reference is made to the accompanying drawings forming a part of this specification, and in which like reference characters indicate like parts throughout the several figures.

Figure l is a side view of my improved brush, showing the same partly in elevation and partly as broken away.

. Fig. 2 is an inverted plan view of the Inetallic shell of the brush back, with one form of the wooden core mounted therein.

Fig. 8 is a View partly in plan and partly broken away, showing the parts appearing in Fig. 2.

Fig. l is an inverted plan, somewhat similar to Fig. 2, butshowing another form of core and different means for securing the same to the shell.

Fig. 5 is a longitudinal section through the parts shown in Fig. 4.

Fig. 6 is an inverted plan showing the metallic shell having the wooden core secured therein in a different manner from that indicated in other iigures, the core being shown as partly broken away.

Fig. 7 is a longitudinal section through the parts shown in Figs. G, the Core appearing as partly broken away.

Fig. 8 is a section on the line 8 8 of Fig. 7 looking in the direction indicated by the arrows. l

The metallic shell is shown at 9, and is preferably stamped or pressed out of a single integral piece of sheet metal. It is provided with side portions 9El and end portions 9b which are thus integral with it. The side portions 9a may be strictly parallel with each other, and this is also true of the end portions 9b. That is to say, it is not necessary that'the' side portions or the end portions of the shell be inclined relatively to each other, for the reason that the shape of the shell need not be relied upon for the purpose of holding the cement and other parts in position, as hereinafter described.

One form of wooden core, to be secured within the metallic shell is shown at l0, and has in this instance the form of a flat, thin block. Secured to this wooden core are a pair of fastening strips ll, held in position by pins or nails 12.

A slightly different form of' wooden core is shown at 10a, in Fig. 4, and is similarly provided with fastening strips lla.

The fastening strips 1l and 11a are se cured firmly upon the inner surface of the metallic shell by means of solder 13, which may be applied either by hand or by aid of 'a soldering machine.

The fastening strip 1la is provided with face grooves 14 and with edge grooves l5, and thus given an articulate surface.

In Fig. 6 is a wooden core l0b differing Patented July 27, 1920.

V Wooden core.

slightly fromV those shown at v and 10a.Y

Y which l do not deem it necessary to describe.

The adhesion between the cement andthe wooden core is ordinarily suflicient to hold them togetherY firmly, Veven in instances where the core is smooth as in Fig. 2. However, if desired there is nothing to prevent the wooden core from being provided with the grooves 14: and 15 above described, or otherwise provided withV such articulate surface as will improve the holding qualities of the core relatively to theV cement.

lt will bey noted that since the cement adheres to the core there is Vno need for any special provision to use the form of the shell as a means for effectively anchoring the cement to the shell. Y

It is a fact well known in this art that if a brush back be filled to any considerable depth with cement the brush as a whole is necessarily quite heavy, as elsewhere stated, and yet in order to obtain a sufficient anchorage between the metallic shell and the cement, in the manner in which these parts have heretofore been made, it has been necessary to make the cement comparatively thick. Moreover the cement does not adhere to the metal back, and shrinks away from the latter in cooling, so. as to become loose unless supported by an undercut formed in the shell.` Again, cement thusl used is very brittle, so that if the brush containing it as prepared in the usual manner happens tofall, specially with the cement slightly loose in the shell, the cement filling is apt to be broken'. My invention above described overcomes the difficult-ies just stated. Y

I do not limit myselfto the precise construction shown and described, the scope of my invention being commensurate with my claims.

Having thus described my invention, what shell and also secured to the inner surface of said corea cement filling housed within said l shell and engaging said core, and bristle tufts supported by said cement filling.

2. In a brush the combination of a metallic shell, a core located within said metallic shell, a Vplurality of Jfastening strips secured to said core' and soldered directlytoV the inner Vsurface of said shell, a cement iilly ing housed within said shell and adhering directly to said core and supported thereby independently of any adhesion'l etween said cement filling and said shell, and bristle-tufts carried by said cement lillingand extending therefrom. Y Y w Y v 8. A brush comprisinga shell made of thin sheet metal, a wooden core located within said shell and having the form of a flat block, fastening strips made of thin sheet metal and soldered directly to the inner surface of said shell, a cement filling housed within said shell and having an outer face located in proximity to one face of said core so as to render said iilling comparatively thin, bristle tufts each partially embedded within said cement filling and extending therefrom, and metallic fastening members holding said fastening strips firmly upon said core.

4. ln a brush the combination of a shell made of thin sheet metal and having a longitudinal form, a pair of thin metallicrfastoning strips located within said shell and soldered thereto at points adjacent the ends thereof, said metallic strips being disconnected from each other, a core made of light material and housed within said shell, said core being secured directly to said fastening strips, a lling of moldable material housed within said shell and enveloping said core so as to adhere directly` thereto independently of any adhesion between said core and vsaid' shell, and a plurality of bristle tufts carried by said filling and projecting therefrom.

' JoHN MoRRrsoN, JR.

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