US2227635A - Hair or like brush - Google Patents

Description

Jan. 7, 1941. v J D, N 2,227,635 HAIR OR LIKE BRUSH Filed Feb. 16, 1939 1 Jbhh/ Zerimn Z ah;-

,litvenjar Patented Jan. 7, 1941 UNITED STATES PATENT OFFICE Application February 16, 1939, Serial No. 256,801 In Great Britain February 16, 1938 5 Claims.

This invention relates to hair and like brushes.

An object of the invention is to provide a brush in which the bristles are removably associated with the brush back for the purpose of facilitat- 5 ing cleaning. A further object of the invention is to simplify the marginal attachment in hair and like brushes of the kind in which the bristles are supported on a rubber or like flexible sheet or backing, which is in turn marginally attached to the brush back. Another object of the invention is to provide a hair or like brush in which the flexible sheet or backing is adequately supported on the interior so as to give a firm brushing action, whilst at the same time allowing desired yielding of the bristles in use.

'I'heinvention provides broadly stated a bristle support for a brush comprised by a flexible sheet or backing supporting the bristles and having enlarged marginal edges whereby it is adapted to be held in the brush back by linear sliding of the edges and co-operating grooves formed in the back. Preferably the enlarged marginal edges have formations adapted to bear to some extent at least upon the interior surface of the sheet or backing, so as to determine the contour of the latter and maintain a firm brushing action when the brush is used. I

The invention includes a hair brush having such a bristle supporting sheet or backing, engaged in the brush back by linear sliding of the enlarged edges into co-operation with grooves formed therein. Preferably the width of the strip is greater than the width between the grooves so that the rubber bulges out away from the brush back in virtually arcuate form, whilst correspondingly shaped formations associated with the enlarged marginal edges support the interior surface of the backing sheet so as to determine and maybe maintain the desired contour.

In one embodiment of the invention the grooves are under-cut in a brush back, and the backing sheet is moulded along each longitudinal edge with enlarged portions which terminate in flat faces, which when the margins are turned over Figure 1 shows the flexible bristle support in part removed from the brush back;

Figure 2 is a longitudinal section along the line Z--2 in Figure 1;

Figure 3 is a transverse section on the line 33 in Figure 1;

Figure 4 shows inend elevation a flexible bristle support removed and indicating the manner in which the enlarged marginal edges are turned over for insertion into the brush back; and

Figure 5 is an end view of the brush back with the bristle support removed.

As illustrated, the brush back I D is provided at its under side with a recess ll extending lengthwise thereof and formed with a pair of under-cut grooves l2. The brush back may, if desired, be manufactured by a moulding process, from a synthetic resin plastic, or may be machined from wood or other suitable material. The backing sheet for supporting the brush bristles I3 is comprised by a length of flexible rubber l4, through which the bristles are pierced, being secured by a suitable rubber or like adhesive, which may be vulcanized. The process for securing the bristles on the backing forms no part of the present invention, being already a well known process. The width of the sheet portion l4 of the bristle support is somewhat is excess of the width of the brush back, whilst along its marginal edges integral enlarged portions l5 are 30 moulded, terminating in flat faces I 6, which as more clearly shown in Figure 3, abut one against the other when the edges are turned over. One of the fiat faces I6 is formed with a number of integral pegs I! which engage co-operating recesses 18 formed in the co-operating face. The enlarged marginal edges 15 have lateral projections [9 adapted to engage the under-cut grooves l2 in the brush back, and with the flat faces l5 abutting the whole recess I l is filled by a virtually solid block of rubber. The portions l5 are also enlarged so that when they co-operate' they provide a curved surface 20, corresponding to the contour of the bulged bristle support so that these enlargements, so to speak, govern or determine the contour of the backing sheet [4, and serve to maintain the contour even when the brush is in use. It will be observed however, from Figure 3, which is a section on the line 3- 3 of Figure 1, that there is a space 2| between the surface 20 and the sheet M, which may provide a cushion effect allowing limited yielding of the bristle supporting backing in use; at the extremities this space 2| is sealed by integral projections 22 from the surface 20, Thus the ends of the 55 brush are closed, giving a neat appearance, whilst the projections 22 may to some extent seal the space 2| so as to provide a resilient air cushion.

In Figure 5 the bristle support is shown removed, and it will be seen that when undistorted the flat faces l6 lie outermost, so that in inserting the backing, the enlarged marginal edges are turned over so that these faces abut one another; the formations l9 are then engaged ,in the grooves 12 and by linear sliding the support positioned in the brush back. In order to retain the bristle support against leaving the brush back in normal use the tongues 23, which extend lengthwise Within the recess II so as to provide the grooves l2, are themselves recessed to receive a pip 24 formed on the portions l5.

It will be appreciated that the brush described above allows the bristle support to be readily re moved for cleaning purposes, Whilst also providing a convenient method for supporting brush bristles on the back part. A brush according to the invention may be firm in use, particularly where the brush supporting backing is internally supported to some extent at least by the longitudinal'projections associated with the marginal enlargement. In this connection it is to be noted that it is not necessary that such projections be provided throughout the Whole length or the whole width of the support. The moulding may for example be such as to provide a virtually cellular construction, being formed as a number of intersecting flat walls projecting substantially at right angles from the formations I5. Again the moulding of the rubber backing sheet and the marginal edges thereof may be such that the edges are adapted to engage grooves in the brush back, so that instead of providing a recess in the brush back, wholly filled with the rubber moulding, a wall integral with the back and projecting between the marginal edges may be provided; in such a construction the bristle supporting sheet can be determined or maintained by suitably shaping the extremity of this wall, which can be arranged to bear to some extent at least against the interior surface of the supporting sheet.

I claim:

1. A hair or like brush comprising in combination a brush back having longitudinal grooves therein; a flexible sheet or backing; bristles supported by said sheet or backing; enlarged marginal edges on said sheet or backing; and formations on the enlarged marginal edges, whereby the enlarged marginal edges are adapted to be engaged with the grooves in the brush back and the formations bear on the interior surface of the bristle supporting sheet or backing.

2. A hair or like brush as claimed in claim 1,

having the formations in continuation of the interior surface of the sheet or backing, so that when turned over for engagement of the enlarged marginal edges with the grooves they bear against the said interior surface.

3. A hair or like brush comprising in combination a brush back having longitudinal grooves therein; a flexible sheet or backing; bristles supported by said flexible sheet or backing; enlarged marginal edges on said sheet or backing having flat faces, which, when the edges are turned over abut against one another, whereby the enlarged edges are adapted to be engaged with the grooves in the brush back by linear sliding.

4. A hair or like brush as claimed in claim 3, further comprising formations on the enlarged marginal edges which, when the edges are turned over, form a curved surface of substantially arouate section adapted to bear down upon and determine the contour of the bristle supporting sheet or backing.

5. A brush comprising, in combination, a brush back having longitudinal grooves therein, a flexible backing having a width greater than the corresponding width between the grooves in the brush back, bristles supported by the backing, and enlarged marginal edges on the backing, said edges being engageable with the grooves in the brush back by linear sliding movement so as to cause the backing to bow away from the back, said enlarged marginal edges including integral formations adapted to bear on the interior of the backing so as to control the bowed contour.

JOHN DENMAN DEAN.

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