US978303A - Safety-razor blade. - Google Patents

Description

0. KAMPFE. SAFETY RAZOR BLADE. APPLICATION FILED 1120.20, 1909.

Patented Dec. 13, 1910.

OTTO KAMPFE, OF NEW YORK, N. Y.,

ASSIGNOR TO KAMPFE 3308., A CORPORATION OF NEW YORK.

SAFETY-RAZOR BLADE.

Specification of Letters Patent.

Application filed December 20, 1909.

Patented Dec. 13, 1910. Serial No. 533,998.

To all whom it may concern:

' Be it known that I, OT'ro KAMPrn, a citizen of the United States of America, residing in the borough of Brooklyn, in the =1i0.been providedwith blades of thin flexible steel and it has been common practice to furnish a. shavin outfit with a dozen or more in number such blades which because they are comparatively inexpensive have been discarded and thrown away as soon as they lose their edge with use, instead of making any effort to re-sharpen them. In fact, these blades have not been adapted to be re-sharpened. These thin flexible normally flat steel blades have been removably placed in a suitable holder and secured for use in a transversely bent form and in a longitudinally bent, form, and where bent were flexed and put 'under tension by the act of placing and securing the blade in the holder.

My invention relates to adapting a thin flexible steel blade for use in the holder of the well-known Star safety razor of my v make; the blade at the same time being longitudinally bent, flexed and curved as shown and described in applications for Letters Patent therefor filed by me one October 2,

1906, Serial No. 337,152; one July 20, 1907,

.35.; Serial No. 384,798, and one October 6, 1909,

Serial No. 521,270. The guard-comb is also bent between the end holding means to the curvegiven to or desired of the blade and the blade is secured in a bent and flexed form to a metal frame also of like curve or are located along one edge thereof. In this manner the blades are each given a permanent curved form to fit the holder, which except for the bend given to the guard- 4 5 comb is of well-known construction.

frame is of elongated flat U-shape in cross This section and of a size and strength sufficient to overcome any tendency of the blade to return to a flat form, and the blade while ifipsthin is of sufficient substance to be ground and sharpened and to be a substantial article.

In the drawing I have represented both the holder and the blade and in this drawing Figure 1 is a front elevation and Fig. 2 a side elevation of the holder of the wellknown Star safety razor and a blade of longitudinally bent form. Fig. 3 is a plan, Fig. 4 an edge view and Fig. 5 a central cross section representing my improved blade.

Referring particularly to the holder which shows a two-part blade-carrying frame elongated and connected with the handle, a represents a part of the frame of approximately semi-circular elongated form.

Z), Z), represent parts at right angles to one another connected to the part a by hinges 2, and (5 represents a handle of suitable form advantageously secured by a screw or rivet 3 to the part a.

The part b in the regular form of Star safety razor is provided with a flat edge or flat toothed edge to receive a section of razor blade lying flatly thereon, but in the device of my present invention 6 represents a guard-comb in which the teeth are raised to an are or curvature which agrees with the concavity of the blade (Z. This member 6 is provided at the respective ends with blade retaining clips 6, the under portions of which have formed therewith the springs e adapted to bear upon the under side of the member 6 f is a sprin which has heretofore been used in my style of safety razor, pivoted at 4 to the member I) and adapted to come against the back of the razor blade to hold the same in position upon the guard-comb.

9 represents a bracket formed preferably integral with the member a and having a lip 5, and It represents a lock-lug preferably formed integral with the member 7) and adapted in the position of the parts shown in Figs. 1 and 2, to come into engagement with the bracket g being held in place and in connection therewith by the lip 5 which device serves to lock the parts I), b which are at right angles to one another and integral, in place in relation to the frame member a and handle 0.

The foregoing description has reference to the well-known form of razor blade holder comprising my Star safety razor except that in the present instance the guardcomb 7) is raised at the center and gradually raised between the center and the ends so as to present a convex upper surface, In Figs.

3, 4 and 5 I have represented my improved form of blade adapted to fit this well-known form of holder after the guard-comb has been given the described curvature. In these figures, d represents a blade which is longitudinally curved by bending and flexing, and d represents a frame of flattened U-shape engaging one longitudinal edge, which frame is permanently bent to about the arc shown in Figs. 4 and 5 and the thin flexible blade inserted in this frame and held securely in position. This blade is therefore always bent'and flexed, is made and adapted for the holder with the convex guard-comb and the object of making the blade bent and flexed permanently and a guard-comb to conform to and receive the same, is because it has been found by experiment that a curved blade is better adapted to reach into hollows or inequalities in the face in the shaving act and produces a clean and more perfect shave than can be efiected with a strai ht edge blade as ordinarily employed in safety'razors.

I permanent bent or flexed form to the lade.

3. As a new article of manufacture, a thin, flexible razor blade sharpened along one longitudinal edge, and a metal framev of flattened U-form in cross section longitudinally bent or curved and receivingthe opposite unsharpened edge of the razor blade and secured thereto along saidedge.

Signed by me this 9th day of December 1909.

OTTO KAMPFE.

Witnesses:

G119. T. PINCKNEY, E. ZACHARIASEN.

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