US1408763A - Brush - Google Patents

Description

J. MORRISON, JR.

BRUSH.

APPLICATION FILED DEC. 18, 1920.

Patented Mar. 7, 1922.

JOHN MORRISQN, JR, OF GL'ENS FALLS, NEXV YORK.

Bnusnt.

Specification of Letters Patent.

Patented Mar. *7, 1922.

Application filed'lDeccmber 18, .1920. Serial No. 431,541.

To all whom 1'15 may concern Be it-knownthat 1, JOHN Moumson, J12, a citizen of the United States, residing in Glens Falls, in the county of \Varren and State of New York, have invented certain new and useful Improvements in Brushes, of which the following is a full, clear, and

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, brushing the nails, etc.

By my invention I seek to accomplish a number of distinct objects, among which are the following:

I. To render the brush strong, light and durable.

IT. To increase the ease and facility which with the brush may be manutactured.

'III. To render the brush capable of withstanding the destructive effects of hot and cold water.

IV. To so construct the brush as to diminish its liability to split. swell, crack, or become miter-logged.

V. To give the brush such form and construction as to prevent it from rattling or chattering when placed in contact with other articles and subjected to shocks and jars.

VI. To give the brush such form and construction as to enable the bristle tufts to be held firmly in position at all times and under all conditions.

VII. To give the brush such torm and construction that in its manufacture there may be utilized a maximum of waste materials, and that certain materials may be used in the "form of relatively small pieces.

VrI'H. To improve generally the efiiciency' of the brush. 7

Reference is made to the accompanying drawing tor-111mg a part of this spec1fication, and in which like characters oi referof sections made pret'erably though not nec-' essarily of resilient material, such as cork,

used in the construction of my brushes.

Fig. 3 is a fragmentary plan of a portion of the unfinished brush back, showing how the bristle tufts are held under pressure by the sections.

Fig. t is a section on the line 4.4t oi Fig. 3, looking in the direction indicated by the arrow.

Generally speaking, the back of my brush is made up of a number of distinct sections.

These are made preferablyof cork or other resilient material, but if desired they may be made ofzsiutable woods 01" varmus"kinds.

or even of aluminum: Thebristle tuftsare held in position partly by glue or cement, and partly by pressure between the tufts and the sections.

A number of the sections are shown ate, 5, 6. and are provided with shallow notches '7, 8, 9, 10, the curvature of each notch being such that the form of the notch is approximately semi-cylindrical if the sections are made of metal or other rigid material, or

drical by pressure of the tufts. as hereinafter described, in the eventoi the sections being made of resilient material such as cork. It being understood that I do not limit myself to the use of any specific material tor the sections, 1 will for the sake of simplicity of description consider that the sections shown are made of cork. The notches 7, 8. 9, 10 canbe out very rapidly and easily, and therefore cheaply, by teedi ng the sections across a table through which cutters or saws. properly shaped and pro portioned for the purpose, protrude to a sutlicient distance.

The bristle tufts are shown at 11, and are each provided with a butt 12. These butts extend into holes 10. each hole being formed by a pair of the notches 7, 8. 9, 10,

and being substantially cylindrical in form in the completed brush.

The several sections in the finished brush are secured together by glue, cementor other appropriate adhesive.

A slab or plate 14, made of lightand strong material, such ascork, is glued upon the top of the sections. It the work be done neatly and skillfully no seam is visible between the member 14 and the sections, or between the sections. I designate-the member 14: as a cap plate.

In practice, the bristles are formed into the bristle tufts and these are held in a die. Cement, glue or other appropriate adhesive is applied to the butts of the bristle tufts, which protrude from the die, The

may be rendered substantially semi-cylindegree of hardness, the sections are placed in between the rowsof bristle tufts, so that adhesive becomes wholly or partially hard the butt of each bristle tuft fits into a pair of the notches 7, 8. 9, 10. Pressure is then applied to the sections, so that each bristle tuft is forced into the notches, thus to a slight extent altering the shape thereof, as

may be seen by comparing; Figures 2 and 3. Each notch thus acqulres, under the passive pressure of'the bristle butt, asubsta-ntially 1 cylindrical form. This done and the abutthe seams between the sections.

ting surfaces of the sections being held to gether by the adheslve as above ClGSClllOQCl each bristle butt must remain at all times under pressure. It also follows that the material of each section is maintained constantly under compression at the points where the material is in contact with the bristle butt. 7

Owing to the saving of time in cutting the notches instead of boring round holes, there is considerable economy in making the brush of the construction above described.

The capping plate 14 increases the mechanical strength of the brush back as .a whole, and has a tenuency to prevent the entrance of water into certainportions oil The capping plate also improves the general appearance of the brush back.

My improved'brush, made as above described, is exceedingly light and strong, and will stand considerable abuse. It may used in hot water and in cold water for long periods of time without swelling. cracking or becoming water-logged. I have found in practice that the glue in the seams retains its tenacity and is not readily dissolved out or softened by the action of the water, either cold or hot. A brush of this kind may stand months of rough usage without showing signs of deterioration. It does not split at theseams, and it resists the entrance of water. The bristle tufts do not pull out of the brush back. and the individ ual bristles do not pull out of the'butts of the bristle tufts.

, If a brush of this kind be carried upon a train, say in a suit-case, and there placed 1 ,aosyzes vided with notches, anda plurality of bristlc tufts, each having a butt which extends partly into a notch of one section and partly into a notch of a different section, said sections being held togetherby an adhesive substance.

2. In. a brush the combinationofa num ber of separate sections each made of resilientmaterial and provided with notches, the notches of one section being severally disposed adjacent the respective notches of a dififerent section, tufts of bristles so ar-- ranged so that each tuft extends partly into a notch 01": one section and partly into a notch of a different section, said sections being held together under pressurmso that each bristle tuft,'by its passive pressure againt the adj acent sections. slightly distorts the adjacent material of said sections and thus slightly changes the form of said notches.

3. In a brush the combination of a number of sections each having the form of a flat bar and provided with notches, the notches of one section mating the notches of a dif ferent section, a plurality of bristle tufts each extending partly into a notch of one section and partly into a notch of a differentsection, andan adhesive for holding said sections together. v

41-. In a brush the combination of a number oi sections made oi cork and provided with 'notches, the notches of one section mating:

the notches ot a dl'liiorent section, said sec' compressed to an appreciable GIfItGllty so as to hold said butts under pressure.

JOHN nonmsonn.

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