US1844702A - Safety razor - Google Patents

Description

Feb. 9, 1932- TESTl 1,844,702

SAFETY RAZOR Filed April 20, 1931 HNVENTOR A hfmm Tm #5 ATTORNEY Patented F ab. 9, 1932 UNITED STATES PATENT OFFICE NICHOLAS TESTI, OF NEW YORK, N. Y., ASSIGNOR TO GILLETTE SAFETY RAZOR COM- PANY, OF'BOSTON, MASSACHUSETTS, A CORPORATION OF DELAWARE SAFETY RAZOR Application filed April 20,

My invention relates to improvements in safety razors and is particularly applicable to the class of safet razors having double edge blades held in s aving position between clamping members.

An object of my invention is to provide a blade with novel means to position itself in cooperation with one of the clamping members with its edges in shaving relation to the guard.

In carrying out my invention I provide a blade having integral projections extending at angles to the plane of the blade and so positioned as to permit the side portions of the blade adjacent to the cuttin edges to be flexed in a blade holder, where y when the blade is placed against one of the clamping members of a safety razor the project-ions will not interfere with the proper clamping and bending of the blade in the holder.

My invention also comprises novel details of improvement that will be hereinafter more fully set forth and then pointed out in the claims.

Reference is to be had to the accompanying drawings wherein:

Fig. l is a side view of a safety razor em- -bodying my invention;

Fig. 2 is a section on line 2, 2 in Fig. 1;

Fig. 3 is a perspective view of my improved blade;

Fig. l is a partly broken plan view, in section on line 4,4; in Fig. 2;;

Fig. 5 is a plan view of the guard memher;

Fig. 6 is a of blade;

Fig. 7 is an edge view of Fig. 6;

v Fig. 8 is a sectional view of a razor including the blade of Fig. 6;

Fig. 9 is a plan view of the guard member of Fig. 8; and

Fig. 10 is a plan view of another form of blade.

Similar numerals indicate corresponding parts in the several views.

My improved blade is indicated at 1, the same being shown provided with cutting edges 1a along opposite sides in a well known way. The blade is shown provided plan view of a modified form 1931.. Serial No. 531,316.

with projections 2 that extend angularly and obliquely therefrom in a lateral direction, preferably both projections extending from same side of the blade and in opposite directions. The projections 2 are shown located in the plane of the central portion of the blade, whereby the portions 3 of the blade that are between the cutting edges and the projections 2 may be flexed suitably for adjustment with respect to the guard of the razor for shaving. In the form shown in Figs. 1 to 4 the blade is provided with slots 4: extendin inwardly from the ends of the blade ad acent to the projections 2, in a 1ongitudinal direction, whereb the marginal portions 3 of the blade may he flexed freely.

flhe blade 1 is adapted to be clamped in a blade holder of a safety razor in a well known way, and the projections 2 are adapted to cooperate with one of the clamping members of the blade holder to retain the blade in shaving position with respect to the guard member. 5 indicates a guard member and 6 a cap or backing member for the blade, and 7 indicates a handle. The parts 5, 6 and 7 may be connected together for clamping the blade between the guard member and the cap or backing member in any desired way. i have illustrated the cap as provided with a threaded stem 8 operative in a threaded recess 8a in handle 7, whereby the blade may be clamped between the members 5 and 6 in a well known way.

One of the members, such as the guard member, is provided with means to cooperate with the projections 2 of the blade to retain the blade between the members 5 and 6 with the cutting edges of the blade in shaving position with respect to the guard teeth. In the form shown in Figs. 1 to 5 the guard member 5 is shown provided at its ends with oblique plane surfaces 9 against which the projections 2 of the blade are adapted to fit to retain the blade in shaving position on said member. The surfaces 9 are shown located at an angle with respect to the plane of the blade receiv-v ing surface 10 of the guard member, and extend'in the direction of the projections 2, whereby when the blade is laid upon said surface 10 with the projections 2 in engagement with the surfaces 9 the blade will be retained "from edge-wise and endwise displacement. The blade is shown provided with a centrally disposed aperture ll for the passage therethrough of the stem ,8, and the guard member 5 is shown provided with an aperture 10a that will register with the aperture 11 of the blade for the passage of said stem.

To retain the cap or backing member 6 in shavingv relation to the guard edges any desired means may be provided. I have, illustrated the cap 6 as provided with studs 12, spaced on opposite sides of the stem 8, said studs being adapted to pass through the apertured portions lla of the blade and into open-- ings 13 in the guard member. The studs 12 are adapted to engage the guard member at the openings 13 to retain the cap in shaving position against the blade. The studs are shown provided with outer end portions of dimensions to lit the openings 13 of the guard and said studs are also shown provided with reduced portions 12? between the on larged end portions 12a and the cap, whereby it a blade having stud receiving apertures that will receive the head portions 12a of the studs be placed upon the guard member, which blade is not provided with projections to engage the guard member to retain it in shaving position thereon, said blade will not retained by the studs in shaving positions on the guard because the reduced portions 12b of the studs will not properly engage said apertures of the blade, and the latter will be loose on the guard and will not be guided by the studs.

Referring to Figs. 6 to 9, the projections 2 from the blade, instead of being at the ends of the latter, are located within the bound aries or marginal edges of the blade and project laterally therefrom at angles thereto to engage the guard member. 6 the projections 2 are illustrated as stamped from the material of the blade by means of slits 2a or the blade, leaving inner portions of the projections attached to the blade material. The projections 2 are shown bent outwardly from the blade and are adapted enter openings 13a in the guard member, 9) The openings are suiiiciently long to receive the projections 2, as in 8, and the widths of the projections 2 and the openings 13a in the guard substantiall correspond in such a way that when said blade is placed against the guard progections 2 enter openings 13c said projections will cooperate with the sides of said openin s to retain the blade in shaving position on too guard. The slits 2a, have portions extending longitudinally substantially parallel to the cutting edges of the blade, permitting the portions 3 of the blade to readily flex when clamped between the members 5 and 6 of the razor.

It will be noted that the inner surfaces of the openings 13a constitute oppositely inrelates clined, blade-locating faces to correspond to the surfaces 9 in the embodiment of my invention shown in Figs. 1 to 5. The projections or tongues 2 of the blade are shaped to conform to these faces and to locate the blade accurately by their engagement therewith. The openings 13s are also designed to lit the enlarged heads 120, or the studs and these positively dete ine the relative position of the two blade-cramping members. When the blade is positioned upon the guard member 5, its tongues 2 extend below or beyond the heads 12a of the studs.

ln 10 the blade is distinguished from the blade shown in 3 by the absence of the slits a, yet the marginal portions 3 of the blade of Fig. 10 may flex between the cutting edges and the adjacent ends or edges of the projections 2 for properly clamping the blade between members 5 and 6 of the blade holderthe projections 2 cooperating with the surfaces 9 of guard member in manner shown in Fig. 2c

l7] hen my improved blade is placed on guard the projections 2 of the blade will no sition the latter with its cutting edges in shhving relation to the guard teeth, and when the cap 2 is clamped against the blade, as in l, 2 and 8, the blade will be retained for shaving, the blade being bent or flexin in a desired way when fo shaving.

Having now described my invention l claim is:

i. A safety razor comprising blade clamping members and means to clamp said mem- 'bers against a blade, one of said members having surfaca at its end located at an oblique angle to the blade receiving surface of said member, and a blade having projections at its ends extendin at a'correspondin oblique angle the blade to engage the n named surfaces said member to positio the cutting edges of the blade in shavrelation to said member.

2. A safety razor as set forth in claim. 1 which one member is provided with openii and the other member is provided with stt adapted to lit openings, the blade being apertured to receive said studs.

3. A safety razor comprising blade cla members, means to clamp said memo so a blade, one of said members ha studs, the other member having openin receive said stud an internally a e"- tured blade projections angle therefrom to cooperate wi h s member to position the blade in shaving 1 tion to said member, said studs having duced portions adapted to loosely receive c is apertures of said blade.

a safety razor comprising blade clamp ing members, means to clamp said members against a blade, one of said members having longitudinally extending openings, the other a a C clamped in position ill Gil

new. will member having studs adapted to fit within said openings to retain said members in shaving relation, and a blade having laterally extending projections adapted to fit said openings to retain the blade in shaving rela tion to the member having said openings.

5. A safety razor blade adapted to be clamped in a position of transverse curvature for shaving, and comprising a normally flat body portion sharpened at its longitudinal edges and having longitudinal slots at its ends spaced from said edges and defining between them an unsharpened tongue extending obliquely with respect'to the body of the y blade.

6. A safety razor blade adapted to be clam d in a position of transverse curvature for s aving, and comprising a normally flat body portion sharpened at a longitudinal edge and having slots extending inwardly from each end and defining between them an elongated unsharpened tongue which is bent at an oblique angle to the plane of the blade.

7. A safety razor blade adapted to be clamped in aposition of transverse curvature for shaving, and comprising a body portion with exterior sharpened edges and parallel, longitudinally-extending slots spaced within said cutting edges and defining betweenthem 50 a tongue extending at an oblique angle in the body of the blade which is free of transverse bending with the body of the blade. I

8. A safety razor comprising co-operating blade-clamping members, one having elongated slots with oppositely inclined bladelocating surfaces, and the other having studs arranged to fit within the slots, and a blade having inclined locating tongues adapted to fit upon the blade-locating surfaces of said 4 slots and to extend beyond the ends of said studs.

NICHOLAS TESTI.

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