US3134121A - Brush - Google Patents

Description

y 1964 J. 1.. WACHTEL BRUSH 2 Sheets-Sheet 1 Filed Nov. 6, 1961 May 26, 1964 J. 1.. WACHTEL BRUSH 2 Sheets-Sheet 2 Filed Nov'. 6, 1961 j mu:

United States Patent O 3,134,121 BRUSH Jean Louis Wachtel, Selestat, France, assignor to Societe dite: Celluloid S.A., Selestat, France, a corporation of France Filed Nov. 6, 1961, Ser. No. 152,955 Claims priority, application France Aug. 11, 1961 2 Claims. (Cl. 15-176) The present invention relates in general to brushes and more particularly to a brush or like device consisting of a rigid back with or without a handle-forming extension and of a pad of resilient material such as synthetic material on which points or bristles are provided.

Brushes of this general type are already known which comprise a back formed with a recess having an inner annular bead adapted to retain with its inner or lower edge the corresponding edges of a pad of synthetic or like material carrying the points or bristles of the brush.

However, with this type of brush mounting, it is not possible to manufacture curved brushes which are extremely useful for many users.

It is the object of the present invention to provide a brush or the like, remarkable in that aforesaid back portion adapted to receive the aforesaid pad is formed with anchoring or assembly elements co-acting with corresponding elements formed on said pad, said anchoring or assembly elements being disposed at least at those points where said pad and said back tend to move away from each other whereby said pad maintained by said anchoring elements will accommodate the inner curvature of said back.

According to another feature of this invention, the aforesaid anchoring elements consist of one or a plurality of substantially T-shaped projections and of one or a plurality of grooves of corresponding cross-sectional contour, said projections and grooves being formed respectively on said back and said pad, or vice-versa.

According to a further feature characterizing this invention, said T-shaped projections and said grooves are formed along the longitudinal centre line of the back and pad.

Other features and advantages of this invention will appear as the following description proceeds with reference to the accompanying drawings illustrating diagrammatically by way of example a typical embodiment of the brush of this invention. In the drawings:

FIGURE 1 is a perspective View from beneath showing the back and handle forming member of a brush according to this invention;

FIGURE 2 is a perspective view from above showing the pad forming member;

FIGURE 3 is a plane view from above showing the back and handle forming member of a brush according to this invention;

FIGURE 4 is a cross section taken upon the line 1V IV of FIG. 3;

FIGURE 5 is a plane view from above of the pad according to this invention;

FIGURE 6 is an end view of the pad as seen in the direction of the arrow A of FIG. 5;

FIGURE 7 is another cross section taken upon the line VIIVII of FIG. 5;

FIGURE 8 is a side elevational showing the brush with parts broken away, and

FIGURE 9 is a cross section taken upon the line IX-IX of FIG. 8;

Referring to the embodiment illustrated in the drawings, a brush according to this invention consists of a rigid member 1 formed for example by moulding from synthetic or like material, constituting the back 2 and handle 3 of a brush. The back forming portion of the 3,134,121 Patented May 26, 1964 brush is also formed with a recess 4 of which the crosssectional contour has substantially the shape of a curvilinear triangle in which a longitudinally extending projection 5 is formed and extends along the longitudinal centre axis of the back forming portion. This projection has a substantially T-shaped cross-section with the horizontal bar of the T formed with a ridge or like top portion havingthe shape of an isoscele triangle with its base constituted by said horizontal bar of the T. The projection 5 does not extend throughout the length of said recess 4 but leaves at either end free spaces 6, 7. However, for the sake of convenience, notably for facilitating the moulding step and improve the rigidity of the back, this projection 5 may be extended toward the handle by a rib 8 shallower than the aforesaid projection 5.

To reinforce the back and handle forming member, beads 9, 10 are formed along said handle and beads 11, 12 are formed along the back, as well as a central rib 13 extending along the handle and one portion of the back.

The back forming portion 2 is concave on the side formed with the projection 5, as shown notably in FIGS. 1 and 8, and the pad forming element 14 adapted to fit in the aforesaid recess 4 and having an outer contour corresponding in shape to this recess has its face registering with this recess normally disposed in a horizontal plane.

The pad is shown in perspective in FIG. 2 and in end view and section respectively in FIGS. 5, 6 and 7. The pad 14 consists of a hollow body of substantially semicircular cross-section and its convex or outer face carries points or bristles 15 formed preferably integrally with the pad material.

As shown notably in FIGS. 2 and 7, the pad is formed inside its concave side with a substantially parallelepipedic relatively thick projection 16 in which a groove 17 corresponding in sectional shape to, and adapted to fit over, said projection 5 is formed. The extensions 18, 19 of the lips of groove 16 are bevelled to converge toward the inside of the groove, as shown.

Of course, the thick projection 16 is also located along the centre line of the pad without extending to the ends of this pad, so as to leave a free space 20, 21 at either end.

The pad 14 has the same outer contour as the recess 4 in which it is resiliently engageable, in that it is of substantially triangular configuration, and its lateral portions are not provided with points or bristles as can be seen in FIGS. 6, 7, these portions constituting a continuous peripheral flange or bead provided however with a notch 22 centrally of the base of the triangle to permit the passage of the portion 8 of rib 5 formed in recess 4.

Fitting the resilient pad on the rigid back is a relatively simple operation.

Firstly, the pad is fitted in the recess 4. The triangular vertex or ridge of projection 5 will then engage the bevelled edges 18, 19 of groove 17 formed in the thick projection 16. When a pressure is exerted on the pad the projection 5 divaricates the lips and then engages the groove 17 so that the lips of this groove resume resiliently their initial position along the thin portion of the aforesaid projection 5, to obtain the position shown in FIG. 9. Due to the inherent resiliency of the pad, this operation is accomplished without difiiculty and the pad assumes the curvature of the back 2. Under these conditions it will be seen that with the mounting described hereinabove the brush may be given any desired curvature and configuration.

Of course, many modifications may be brought to specific details of the brush described herein, without however departing from the spirit and scope of the invention. Thus, in the example described hereinabove the projections and the grooved thick portion 16 are disposed along the common centre line of the recess 4 and pad 14. It would not constitute a departure from the basic principle of the invention to design a brush wherein these elements 5 and 16 were discontinuous and provided only at those locations where the pad 14 tends to move awayfrom the back 2 of the brush. Again, these elements may also extend throughout the length of the recess and pad; Besides, the curvature of the brush may differ considerably from that illustrated without departing from the spirit and scope of the invention. I

Generally, although the present invention has been described in conjunction With a preferred embodiment, it is to be understood that modifications and variations may be resorted to without departing from the spirit and scope of the invention, as those skilled in the art will readily understand. Such modifications and variations are con- 'sidered to be within the purview and scope of the invention and appended claims.

/ What I claim is:

1. A brush comprising an elongated back-forming element having a longitudinally curved concave face, a pcripheral flange on said concave face defining a recess between said concave face and said peripheral flange, said recess having a plane of symmetry, a first projecting memher in said recess integral with said back-forming element and having a substantially T-shaped cross-section, a resiliently deformable body inserted in said recess and having a convex face and a concave face, the latter facing said concave face of the back-forming element, brush means on said convex face, a second projecting member integral with said body and located on said concave face of the body, said first and said second projecting members being symmetrical with respect to said plane of symmetry, and groove means in said second projecting member having a substantially T-shaped cross-section complementary to said T-shaped cross-section of the first projecting member, the latter engaging said groove means so that said body be caused to substantially conform to the longitudinal curvature of said back-forming element.

2. A brush as claimed in claim 1 wherein said first projecting member comprises a portion of substantially triangular cross-section overlying the top bar of its T- shaped cross-section, and said groove means comprise inwardly bevelled lips.

References Cited in the file of this patent UNITED STATES PATENTS

Claims (1)

1. A BRUSH COMPRISING AN ELONGATED BACK-FORMING ELEMENT HAVING A LONGITUDINALLY CURVED CONCAVE FACE, A PERIPHERAL FLANGE ON SAID CONCAVE FACE DEFINING A RECESS BETWEEN SAID CONCAVE FACE AND SAID PERIPHERAL FLANGE, SAID RECESS HAVING A PLANE OF SYMMETRY, A FIRST PROJECTING MEMBER IN SAID RECESS INTEGRAL WITH SAID BACK-FORMING ELEMENT AND HAVING A SUBSTANTIALLY T-SHAPED CROSS-SECTION, A RESILIENTLY DEFORMABLE BODY INSERTED IN SAID RECESS AND HAVING A CONVEX FACE AND A CONCAVE FACE, THE LATTER FACING SAID CONCAVE FACE OF THE BACK-FORMING ELEMENT, BRUSH MEANS ON SAID CONVEX FACE, A SECOND PROJECTING MEMBER INTEGRAL WITH SAID BODY AND LOCATED ON SAID CONCAVE FACE OF THE BODY, SAID FIRST AND SAID SECOND PROJECTING MEMBERS BEING SYMMETRICAL WITH RESPECT TO SAID PLANE OF SYMMETRY, AND GROOVE MEANS IN SAID SECOND PROJECTING MEMBER HAVING A SUBSTANTIALLY T-SHAPED CROSS-SECTION COMPLEMENTARY TO SAID T-SHAPED CROSS-SECTION OF THE FIRST PROJECTING MEMBER, THE LATTER ENGAGING SAID GROOVE MEANS SO THAT SAID BODY BE CAUSED TO SUBSTANTIALLY CONFORM TO THE LONGITUDINAL CURVATURE OF SAID BACK-FORMING ELEMENT.

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