US Patent for the Rapide safety razor
FiledFriday, 10th June 1892
PublishedTuesday, 2nd January 1894
Parts not referenced in the text: None
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To all whom it may concern:
Be it known that I, Ernst Scharff, a subject of the Emperor of Germany, resident at Frankfort-on-the-Main, Germany, have invented new and useful Improvements in Safety-Razors, of which the following is a specification.
This invention relates to the mode of removably holding and adjusting the blade, and adapting the holder to suit blades of different thicknesses. The razor blade is held in a frame comprising end clips, against which it is pressed by the thrust of a screw formed on the handle and working through a screw-socket formed in the boss of the frame, the screw pressing against the under side of the blade through a curved metal tongue forming a guide to prevent injury to the edge of the razor when inserting it. By means of this screw and a jam nut thereon, the cutting edge of the blade may be accurately adjusted with regard to the upper ends of the row of curved V-edged guard teeth on which it bears. These guard teeth spring from the boss of the frame and form a basket to catch the lather. A forked or U-shaped spring bears by its upper end against the back of the blade while the ends of its limbs are pivoted in opposite sides of the boss, the spring being so curved or bowed at the lower part as to present an abutment for a regulating nut screwing on the socket whereby the spring may be caused to press more or less against the back of the razor. By slacking the nut, the spring pivots sufficiently on the socket to allow the blade to be readily removed.
Reference is to be had to the accompanying drawings, forming part of this specification, wherein—
The razor blade
Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is—
1. In a safety razor, a basket or frame, having guard teeth and a socket or boss provided with an external screw-thread, in combination with a curved spring
2. In a safety razor, a basket or frame having guard teeth adapted to hold the blade, and also having an internally and externally screw-threaded socket, in combination with a handle having a screw-threaded extension passing through said socket to bear upon the blade, a spring pivotally connected to the socket and bearing against the back of the blade, and a regulating nut bearing upon said spring, substantially as described.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
Frank H. Mason.