FiledThursday, 9th March 1922
PublishedTuesday, 1st July 1924
Razor-blades characterised by the shape
Performing Operations; Transporting
Hand Cutting Tools; Cutting; Severing
Hand-Held Cutting Tools Not Otherwise Provided For
Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
Parts not referenced in the text: None
Parts not referenced in the images: None
To all whom it may concern:
Be it known that I, Carl Schoenert, a citizen of the United States, and resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Safety-Razor Blades, of which the following is a specification.
The principal object of this invention is to provide a new and improved construction in a razor blade.
A further object is to provide a construction of a razor blade by means of which a sliding movement of the blade over the skin will cause a relative transverse movement of the skin and consequently of the hairs with respect to the blade.
For the accomplishment of these and such further objects as will hereinafter be apparent to those skilled in the art to which this appertains, the invention consists in the construction, combination and arrangement of parts herein specifically described and illustrated in the accompanying drawings, wherein is shown a preferred embodiment of the invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the claims hereunto appended.
In the drawings forming a portion of this specification:
As shown in the drawings,
These ribs and projections may be provided on either one or both sides of the blade as will be readily understood.
It is well known that a proper cutting action can only be obtained when the cutting edge of the razor, knife or other instrument is moved transversely or slid across the object to be cut. When a razor blade provided with my invention is pressed against and drawn over the skin, the skin will move up wardly into the depressions between the ribs. This is illustrated in
In the triangle shown in
While I have illustrated my invention as embodied in a safety razor blade, it will be obvious that the same is not limited thereto but is applicable to any type of a razor blade.
Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States, is:—
1. A razor blade having a series of permanently fixed corrugations in such close proximity to the cutting edge as to cause a relative transverse movement between the skin and the cutting edge as the blade is drawn over the skin.
2. A razor blade having a series of projecting ribs with a series of depressions between said ribs, in such close proximity to the cutting edge as to cause the skin to move transversely into said depressions when the blade is drawn over the skin.
3. A razor blade having a series of projecting ribs with a series of depressions between said ribs, said ribs and depressions extending substantially transversely to and intersecting the bevels which define the cutting edge of the blade.
Signed at New York, in the county of New York and State of New York, this 8th day of March A. D. 1922.