US1798637A - Shaving brush - Google Patents

Description

March 31, 1931. I s I 1,798,637

SHAVING BRUSH Filed May 4, 1929 INVENTOR M1123 Jelk,

AT OB Patented Mar. 31, 1931 UNITED STATES PATENT OFFICE MORRIS SELK, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO AMERICAN SAFETY RAZOR CORPORATION, OF BROOKLYN, NEW YORK,

VIRGINIA A CORPORATION OF SHAVING BRUSH Application filed May 4, 1929. Serial No. 360,346.

My present invention relates generally to brushes and has particular reference to shaving brushes.

One object of my invention is to provide an improved shaving brush structure wherein the bundle of bristles is held in a uniquely firm and secure manner in association with the handle. 7

Another object lies in the provision of a 10 brush structure of the foregoing character wherein a minimum amount of cement or similar adhesive is employed, wherein no recourse whatsoever is had to rivets or similar positive fastening members, and wherein the major factor of security resides in the proper configuration and method of manufacture of the several parts and of the assembled brush.

My invention has particular reference to the type of brush wherein a handle of celluloid or similar material is associatedwith bristles; and one featureof my invention lies in properly and uniquely making use of the peculiar characteristics of celluloid or the like in achieving the general object.

A further object lies in a novel method of ornamentation of a brush of this character, and particularly in the provision ofan improved brush structure wherein a distinctive configuration on the handle, either for purposes of pure ornamentation or for coor dinate purposes of displaying'a trade mark 1 or similar insignia is provided in a simple and inexpensive manner.

Briefly, my invention relies upon the peculiar property of celluloid or the like in shrinking under the action of heat. For example, a tubular piece of such material may be stretched or expanded and will thereupon shrink to reduce the diameter thereof when immersed in hot water or the like. In accordance with my present invention, I provide a ferrule, preferably of metal or the like,suitably associatedwith the bristle bundle and of peculiar and novel configuration to accomplish the desired object; and I provide for the snug enveloping of this ferrule by a tubular celluloid handle shrunk into proper position. v

For the attainment of the foregoing objects and such other objects as may hereinafter appear or be pointed out, I have illustrated two forms of my invention in the accompanying drawings wherein- Figure l is a side view partly in section, showinga shaving brush constructed in accordance with my present invention;

Figure 2 is an exploded view, partly in section, showing the several elements of a savling brush structure 'ofmodified form; anc

Figure 8 is an exterior side view of the brush resulting from the elements of Figure 2. v

In accordance with my invention, a bundle of bristles 10 is suitably associated with a ferrule 11. I have illustratively shown the rear end 12 of the bristle bundle telescopically inserted within the forward end of the ferrule 11 and held in mutual association by means of a suitable adhesive or other mounting of a similar character. The particular manner of associating the bristle bundle 10 with the ferrule 11 is not material so faras the more important phases of my present invention are concerned.

The ferrule 11 is preferably made of light metal or the like, and in accordance with my invention, the exterior longitudinal contour is generally convergent toward the forward end thereof. For example, in Figure 1, I have shown the ferrule 11 with an exterior contour which conforms substantially to the contour of a truncated cone whose apex lies in advance of the bristle bundle 10. The structure is'completed by the provision, in

snug envelopment of the ferrule 11, of a tubular handle 13 shrunk into position. This handleis of celluloid or'similar shrinkable material and conforms snugly to the exterior contour of the ferrule 11. It has a rear wall lat which serves as the rear end of the handle when the assembly is completed, and which prevents the ferrule 11 from moving rearwardly.

The firmness of association between the handle 13 and the bristle bundle 10, and particularly between the handle 13 and the ferrule 11, will be evident. The ferrule 11 and the handle 13 are so associated in the completed assembly that the two are wholly inseparable except by complete mutilation of the handle 13.

In Figure 2 I have shown a slightly modified form and the elements of this construction are shown independently during the course of manufacture. A bristle bundle 15 has its rear end suitably mounted within the forward end of a ferrule 16. The general exterior longitudinal contour of the latter is forwardly convergent, as before, but it is also provided with a raised portion on the ex* terior surface thereof and rearwardly of the forward end, the raised portion being shown in the form of an annular or circumferential ridge 17 exteriorly knurled. During the manufacture of the brush, the ferrule 16'is telescopically associated with a tube 18 of expanded or stretched celluloid, the latter ing purely cylindrical and having an inter-101' diameter substantially equal to the maximum exterior diameter of the ferrule 16. In the illustrated form, the interior diameter of the tubular element 18 is substantially the same and possibly but slightly larger than the ex terior diameter of the annular ridge or raised portion 17. This permits the ferrule 16 to be snugly telescoped within the tube18L In accordance with my invention. these telescopically associated parts are suitably heated as by immersing the same in hot water, whereupon the peculiar characteristics of the ce luloid will cause the tube 18, to shrink around the ferrule 16 into snug conformity with the latter. The configuration of the ferrule 16 will be imparted to the celluloid tube 18-, and upon reference to Figure 3, it isto be particularly noted that a raisedportion in the form of an annular or circumferential ridge 19 is provided upon the exterior surface of the shrunk handle. Ata suitable stage in the proceeding, an end piece 20 is applied to the rear end of the handle as by cementing or in any other suitable manner.

I have illustratively shown the forward end of the ferrule 16 provided with a bead 21 for the purpose of minimizing any damage to the bristles during the use of the brush, but the provision of such a bead is not essential, nor is the exterior diameter of this bead of material importance so long as the ferrule is, in general. convergent toward-the forward end thereof.

The completed brush is extremely attractive, is devoid of any rivets or similar fastening elements, embodies a minimum of ad hesive or cement, and has an exceptionally long life so far as the mutual association of the handle with the bristles is concerned. The snug engagement of the ridge 17 enhances the security with which the ferrule 16 is held against longitudinal displacement, and the knurling on the ridge 17 prevents rotational displacement.

The significance of the term forwardly convergent as used herein and in the appended claims will be clear from the description given and from the general nature of my invention, and I do not mean to have this term construed in its strict sense wherein it connotes conformity with a conical surface. For example, the ferrule 16 may be entirely cylindrical and yet the provision of a raised portion or ridge rearwardly of the forward end thereof will achieve the desired result and will render the ferrule forwardly convergent in the sense intended herein.

Although I have illustrated an annular ridge, it will be obvious that the raised portion on the exterior surface of the ferrule may be of other configurations. A series of ridges may, for example, serve attractively to ornament the handle of the completed brush. Or, the ridge may be helically arranged, or it may be sub-divided into a series of projecting or raisedportions. It is of particular importance to note the possibility of displaying a distinctive marking such as a trade mark. For example, the raised portion typified by the ridge 17 may have a configuration of a star or a circle or the like, and the manner of manufacture will cause the outer and main handle to assume a similar configuration during its shrinkage around the ferrule. Such raised portion will thereby serve not only to hold the parts in inseparable association, but will also serve to display on the exterior ofthefinished handle a distinctive marking of the desired character.

Furthermore,- although I have shown the ferrule 16 of substantially the same longitudinal length as that of the outer celluloid tube, it will be obvious that such equality is not essential. I may, for example, find it convenient in certaincase's to construct the ferrule of lesser length and to insert a filler block, as of wood or the like, within the celluloid handle and behind the ferrule.

In general, it will be obvious that changes ;in the details herein described and illustrated for the purpose of explaining the nature of my invention may be made by those skilled in the art without departing from the spirit and scope of the invention as expressed inthe appended claim. It is there- 'fore intended that these details be interpreted as illustrative and not ina limiting sense.

Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent is A shaving brush comprising a bristle bundle, a ferrule engaging one end of the bundle and having a circumferential lmurled ridge on a midportion of its exterior surface, and a tubular handle of shrunk celluloid snugly enveloping said ferrule and in conformity therewith, whereby axial displacement of the ferrule is prevented by said ridge and rotational displacement is prevented by said knurling.

In witness whereof I have signed this specification this 30th day of April, 1929.

MORRIS SELK.

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