Filed Monday, 26th March 1923
Published Tuesday, 19th August 1924
Inventor Charles Barra
Language EnglishCPC Classification:
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
Details or accessories
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, Charles Barra, a citizen of the United States, and resident of New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Razors, of which the following is a specification.
The object of my invention is to provide means to heat a razor and continue the heating during shaving, whereby the razor may be sterilized and maintained in sterile condition before and during use, and whereby to counteract lowering of the temperature of the razor during contact with the skin below the temperature of the latter. By maintaining the razor at or above a sterilization temperature during the shaving operation I am enabled to prevent infections caused by cutting of skin, pimples and other blemishes. By my improved means I am enabled to _keep the razor sharp during the shaving operation. A razor blade heated to such a temperature will make shaving of a person's face more comfortable and the resulting shave will be more satisfactory than where the face is shaved with a cold razor.
In carrying out my invention I provide a razor blade, either of the ordinary variety or of the class of safety razors, using an electric heater disposed at a suitable distance from the cutting edge of the blade, and in thermal relation thereto, which heater may be supplied with current from an ordinary electric service outlet, whereby the blade may be heated to and maintained at a sterilization temperature both while not in use and while in the act of shaving.
My invention also comprises novel details of improvement that will be more fully hereinafter set forth and then pointed out in the claims.
Reference is to be had to the accompanying drawings forming a part hereof, wherein—
Similar numerals of reference indicate corresponding parts in the several views.
When the parts are assembled, as shown, and the electric current is passed through the heater
The heated sterilized razor blade will have the beneficial effect of making it more comfortable for the person being shaved, as well as to prevent infections which might be caused by cutting of the skin, pimples, etc., by a non-sterile blade. Furthermore, by maintaining the razor blade at a sterilization temperature the cutting edge will be less liable to become dull, thereby saving frequent stropping or honing of the same and increasing the durability of the blade.
Having now described my invention what I claim is:
1. A razor blade provided with a stem and having material at its back extending laterally beyond the stem, said material having a bore extending substantially parallel to the cutting edge of the blade in a plane beyond the plane of the stem, a resistance conductor, and an insulator therefor within said bore, whereby the cutting edge may be maintained at a sterilization temperature.
2. A razor blade having a stem, a cutting edge on one side of said stem and material on the other side of said stem extending laterally beyond the plane of the latter, said material having a bore extending substantially parallel with said cutting edge, said bore being closed at its outer end and open at its inner end, beyond the stem, an insulating tube within said bore, and a coil of resistance wire within said tube, the terminals of said resistance wire extending through the open end of said bore free from the stem.