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Safety Razor for worn-down Blades

Patent US1008769

Invention Safety-Razor

Filed Thursday, 8th September 1910

Published Tuesday, 14th November 1911

Inventor Abraham Zilbersher

Language English

CPC Classification:   
  • B26B21/18
    Safety razors with one or more blades arranged transversely to the handle involving blades with two cutting edges
  • B
    Performing Operations; Transporting
  • B26
    Hand Cutting Tools; Cutting; Severing
  • B26B
    Hand-Held Cutting Tools Not Otherwise Provided For
  • B26B21/00
    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
  • B26B21/08
    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 involving changeable blades
  • B26B21/14
    Safety razors with one or more blades arranged transversely to the handle

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A PDF version of the original patent can be found here.

United States Patent Office.

Abraham Zilbersher, of New York, N. Y. Safety-Razor
1,008,769. Specification of Letters Patent. Patented Nov. 14, 1911.
Application filed September 8, 1910. Serial No. 580,966

To all whom it may concern:

Be it known that I, Abraham Zilbersher, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, county and State of New York, have invented a new and Improved Safety-Razor, of which the following is a full, clear, and exact description.

My invention relates to a new and useful improvement in the art of safety razors and more particularly the invention involves a retainer or cap plate used on safety razors, the construction of which especially adapts it for use with blades which have been worn down more or less after honing or stropping.

The object of my invention is to provide a retainer or cap plate having the parts thereon which coact with the blade seat to hold it in position to one side of a central line through the cap plate whereby portions of the cap plate bear on the top surface of a blade for unequal distances, the wider portion of the cap plate being adapted for use with a new blade while the narrower portion thereof is especially adapted for use with a blade which has become lessened in width due to honing or stropping. The construction of the cap plate and the remaining parts with which it is used in combination will be more particularly described hereinafter and set forth in the claims.

Reference may be had to the accompanying drawings forming a part of this specification, in which like reference characters denote corresponding parts in all the views, and in which—

Figure 1 is a perspective view of the device; Fig. 2 is a vertical transverse section on the line 2—2 of Fig. 3; Fig. 3 is a top plan view; and Fig. 4 is a vertical section on the line 4—4 of Fig. 3.

The improved retainer or cap plate is set forth and described in connection with a particular form of holder although it is obvious that the cap plate may be used with any form of holder as my invention relates to the cap plate and not to the holder itself.

The safety razor in which I have illustrated my improvement preferably consists of a piece of sheet metal bent in the form of a tube and having extending therefrom a flaring portion 2 bent in the form of a loop to constitute a supporting member which forms a holder with the handle 1. The outer edge of the holder is provided with alternate recesses and projections so as to form a serrated portion 3, between the teeth of which the hairs may project in the operation of shaving, so that they can come in engagement with the edge of the blade. This blade is indicated at 4, and preferably consists of a permanently concaved member having edges 5 and 6 on opposite sides thereof. The blade is secured to the holder by means of the cap plate or retainer 7, the particular construction of which embodies my invention, the retainer being in the form of a concave member which engages the blade 4 adjacent its cutting edges whereby the blade is held in position on the holder; the retainer may be of springy material if so desired so as to permit of easy attachment and firm securing of the parts. For the purpose of securing the retainer on the holder and thus securing the blade 4 in place a screw-threaded lug 8 extends laterally from the concave face of the retainer which is adapted to project through openings 9, 10, located in the blade 4 and holder 2 respectively. In order to position the cap-plate and the blade on the holder positioning lugs 11, 12, are extended laterally from the concave face of the retainer or cap plate and preferably at equal distances from the screw-threaded lug 8 so that in whatever position the cap plate is used these lugs 11, 12, may engage in suitable openings in both the blade and the holder which are adapted to receive them.

The improved feature of my invention and the one involving the novelty thereof lies in the relation between the threaded lug 8 and the other lugs 11, 12, with respect to the cap plate 7; these lugs lie in the same straight line whether they adjoin the cap plate or retainer and this line, while it is parallel with the opposite edges of the cap plate, it is nearer one edge than the other or it is, so to speak, eccentric, whereby the distance between the plane passing through the lugs.and the edges of the cap plate is unequal. The purpose of such construction is to permit the cap plate or retainer to be used with blades of varying widths; originally these blades are substantially of the same width but through being used and with consequent honing and stropping they become of lesser width due to the wearing away because of the grinding thereof. Since the distance from the lugs to one edge of the cap plate is less than the distance from the lugs to the other edge the cap plate may be used on the holder in order to hold the blade in correct position for shaving after it has become worn by merely bringing the edge of the cap plate which is nearer the lugs adjacent the edge of the blade which it is desired to use in shaving.

The operation of the device will be readily understood when taken in connection with the above description. When it is desired to shave, a blade is placed on the holder 2 so that the openings therein will extend in alinement with the openings in the holder. The retainer 7 is then placed in position with the lug 8 and lugs 11 and 12 extending through the alined openings in the holder and blade. The parts are secured in their adjusted position by the thumb screw 15 which may be screwed up to the desired tightness. The serrated edge 3 thus forms a guard for the edge 5 of the blade 4, permitting the hairs to come in contact therewith, and yet preventing the blade from digging into the flesh any distance. When the blade becomes worn and has to be sharpened down to a smaller size, or if it should be desired to use a smaller sized blade, the thumb screw 15 can be loosened and the retainer 7 reversed so as to bring its side of less magnitude over in juxtaposition to the guard edge 3. This is permitted by the symmetrical location of the lugs 11 and 12 with respect to the screw 8.

While I have shown one embodiment of my invention, I do not wish to be the specific details thereof but desire to be protected in the various changes, alterations, and modifications which I may make within the scope of the appended claims.

Having thus described my invention I claim as new and desire to secure by Letters Patent:

1. As a new article of manufacture a cap plate for safety razors having a plurality of lugs extending laterally thereof, the said lugs lying in the same vertical plane, the distance between the said plane and one edge of the cap plate being different than the distance between the said plane and the other edge of the said cap plate.

2. As a new article of manufacture, a cap plate for safety razors having means extending therefrom adapted for coöperation with a blade and a blade seat in order to position the blade thereon, the said means being intermediate of the edges of the cap plate, the distance from one edge to the said means being greater than the distance from the other edge to the said means.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

Abraham Zilbersher.


Horatio Whiting,

Philip D. Rollhaus.