Razor with Square Blade
Filed Tuesday, 3rd October 1905
Published Tuesday, 19th May 1908
Inventor Adolph Kastor
Language EnglishCPC Classification:
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To all whom it may concern:
Be it known that I, Adolph Kastor, a citizen of the United States, and a resident of the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Razors, of which the following is a specification.
My invention relates most particularly to safety razors and has for its object to provide such a razor with a blade having a plurality of cutting edges, that is more than two cutting edges, thus doing away with the necessity of frequent stropping, honing or sharpening, or the using of new blades.
My invention will be fully described hereinafter and the features of novelty will be pointed out in the appended claims.
Reference is to be had to the accompanying drawing in which
While I have shown a razor blade with four cutting edges, I wish it distinctly understood that I do not limit myself to this construction as the said blade may be made for instance triangular in shape with three cutting edges or said blade may be provided with more than four cutting edges, and it is to be further understood that my claims are intended to cover such structures.
With my improved blade after one cutting-edge has become dull, another edge can be used, so that frequent honing or sharpening or even stropping is done away with.
It is to be understood that my blade may be used in connection with any suitable handle other than the one shown. It is to be further understood that although four notches have been shown in the blade and in the lower plate and four projections on the upper plate, this construction is not absolutely necessary as one or more notches in the blade and lower plate and one or more projections on the upper plate will answer the same purpose.
In order that all the edges of the blade
Various modifications may be made without departing from the nature of my invention.
I claim and desire to secure by Letters Patent:
1. In a safety razor the combination of a polygonal blade the entire perimeter of which is sharpened, with a holder having two polygonal clamping members with portions arranged to engage the blade on opposite surfaces adjacent to the sharpened perimeter to hold each of the edges or sides thereof straight and to keep the entire perimeter in the same plane, said clamping members also having diagonal ridges and grooves respectively to flex the blade.
2. In a safety razor, a polygonal blade every edge of which is a cutting edge, and a holder comprising opposing members adapted to receive the blade between them, one of said members having grooves or depressions converging toward its center, and the other corresponding ridges or raised portions, extending inward from points corresponding to the portions of the blade's corners.
In testimony whereof, I hereunto subscribe my name in the presence of two sub scribing witnesses.
L. G. Osborne,
E. M. Netter.