|Publication number||US1877149 A|
|Publication date||Sep 13, 1932|
|Filing date||Aug 21, 1931|
|Priority date||Aug 21, 1931|
|Publication number||US 1877149 A, US 1877149A, US-A-1877149, US1877149 A, US1877149A|
|Inventors||Sylvan Benjamin M|
|Original Assignee||Sylvan Benjamin M|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (1), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Sept. 13, 1932. B M. SYLVAN 1,877,149
RAZOR BLADE Filed Aug. 2l, 1931 fllorncy Patented Sept.' 13, A193i UNiTE-D STATES 'PATENT' oFFicB :BENJAMIN M. SYLVAIN', 0F NEW Ng'Y.'
nAzoR BLADE applicativa mea Augusta, 1931, semaine. 558,597.l
The present invention relates to new and useful improvements in razor blades, and more particularly it pertains to blades of the multiple edge type.
In a prior application, filed by me June 20, 1931, Serial N o. 545,729, I have illustrated a safety razor of the type to which 4the blade of the present invention is particularly adapted, but it is to be understood that the blade of the present invention may be made in forms other than that especially adapted for the razor illustrated in the application above mentioned without departing from the spirit of the invention.
provide a multiple edged safety razor blade which as an entirety is substantially rigid, although it is capable of being flexed at or adjacent the cuttin edgesy of the blade.
It is a further 0 ject of the invention so to construct a razor blade of the aforementioned type that the cutting edges of the various cutting elements may be exed independently of each other. A further object of'the invention resides in a novel construction whereby a plurality of cutting elements may be rigidly secured together in the desired form to provide the finished blade.
Other objects of the invention will appear as the nature of the same is better understood, and for this purpose, reference will be had to the accompanying-drawing, wherein,
Figure 1 is an outside plan view of a razor blade constructed in accordance with the present invention, i
Figure 2 is an inside plan view of the blade,
Figure 3 isa transverse sectional View taken on the lines 3-3 of Figure 1,
Figure 4 is a detail sectional view taken on the lines 4-4of Figure 3, d i
Figure 5 is a plan view illustrating a portion of the bladebefore the'operation thereon has been completed, and;
Figure 6 is a detail sectional view similar to Figure 4, illustrating a modified form of. the invention. d
Referring more 'particularly to the drawing, the blade comprises in the present illustration of the invention, four cutting ele- Itis one ofthe objects of the invention to l ments 10. Each cutting .element 10 has a cutting edgel 11 which may be formed thereon by grinding or in any other desired manner.
In the present embodiment of the invention, the blade is shown as square and in constructing a blade of this character, a rigid frame-like member formed preferably of one piece of material is employed. This frame like member is designated 12 in the drawing, and has four relatively narrow sides 13. The co frame is -shaped in cross sectional form as illustrate in Figures- 4 and 6, and it is. formed from a blank such as illustrated in Figure 5.
y The blank illustrated in Figure 5, cong5 sists of a rectangular piece of metal 15 which has a central Vsquare opening 16, and at the corners is cut as at 17 from the inner edge towards the outer edge to a point designated 18 which is substantially half way between 70 the side edges of the sides of the fra-me. After this has been done, the blank is folded upon the dotted line 19 and the sections 20 are thereby positioned into parallelism with the outer section 21 of the blank to form the 75 frame.
The blank is provided on its outer edges with a plurality of tongue-like projections 22 and upon its inner'edges at the corners thereof with a plurality of tongue-like projections 23. Wheninner sections 20 are bent into parallelism with the outer sections, the tongues 23 will coincide with the tongues 24. With the frame member constructed as just described, the cutting elements 10 are 85 positioned between the parallel members of i'. the sides of the frame, and are clamped therein in o rder to hold the cutting elements in the position in which they are shown in Figures 1 to 3 of the drawing. Eachof the 90 cutting elements is provided with a pair of spaced openings 28', and these spaced openings 28 are adapted to receive the tongues 22 and 23 which are bent into the opening as infdicated at 29 in Figure 4, and which serve 95 to clamp the cutting elements 10 and hold them rigidly within the ri d frame 12 in the manner best illpstrated in igure 4.
By reference to Figures 1 and 2, it will be noted that each of the cutting elements 10 has angular ends 30 which terminate in f straight portions 31. These straight portions 31 extend rearwardly from the cutting edge 11 of each blade to a point removed a from the cutting edge, and this construction provides free ends of the blades and thereby permit of individual flexing of the cutting edges of the blade even though the frame member 12 be of extremely rigid construction.
lo In the modied form of the invention, the
frame member is designated 41, and comprises two members 41 and 42 between which a blade 43 may be clamped. After the blade u has been placed in position between the members 41 and 42, it is rigidly secured therein by means of spot welding or. the like as indicated at 45 in Figure 6. In this form of the invention, the tongues 22 and 23 heretofore described may be eliminated and the blade securely held by means of the spot welding heretofore mentioned.
From the foregoing it is apparent that-the present invention provides a new and novel 25 form of safety razor blade, and while in the present embodiment of the invention, the blade has been illustrated as consisting of four cutting elements or cutting edges, it is to be understood that it may be constructed in other forms without departing from the spirit of the invention'.
Having thus described the invention, what I claim as new and desire to secure by Letters Patent is 35 1. A multiple' edge razor blade of truncated pyramidal form comprising, a rigid, Yrectangular frame member, and a plurality of separable blade elements carried by said frame.
.w 2. A- multiple edge razor blade comprising,
a rigid open rectangular frame member, and a plurality of separable blade elements carried by said frame, said blades being rigidly secured in the frame.
3. A multiple edge razor blade, of truncated, pyramidal form comprising an open rectangular rigid frame member,'the sides of which-are :U-shaped in cross-sectional form, and a blade carried by each side of said frame member and being clamped between the members of the frame.
4. Asafety razor blade of truncated pyramlidal form comprising a'square frame, having narrow sides formed of material bent upon itself to provide two parallel members, tongues projecting from the edges of said parallel members, a cutting element clamped between the parallel members of each side of the frame, and openings in the blade mem- 00 bers to receive said tongues to secure the blades in the frame.
In testimony whereof I aix my signature.
- BENJAMIN M. SYLVAN.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US8042444 *||Oct 15, 2005||Oct 25, 2011||Leica Biosystems Nussloch Gmbh||Knife holder for microtome blades|
|U.S. Classification||30/346.57, 30/346.58, 30/346.61, 30/346.59|
|International Classification||B26B21/56, B26B21/00|