US2712178A

US2712178A - Safety razor having flexible blade

Info

Publication number: US2712178A
Application number: US109499A
Authority: US
Inventors: Marzio Arnaldo
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-08-10
Filing date: 1949-08-10
Publication date: 1955-07-05
Anticipated expiration: 1972-07-05

Description

July 5, 1955 A. MARZIQ SAFETY RAZORS HAVING FLEXIBLE BLADE Filed Aug. 10, 1949 FIG.6

FIG.8

MW e Wa la Vlad.

Unifid W5. Paten SAFETY RAZOR HAVING FLEXIBLE BLADE Arnaldo Marzio, Milan, Italy Application August 10, 1949, Serial No. 109,499

1 Claim. (Cl. 30 -7s This invention relates to safety razors having a flexible blade and has the object of providing a razor of said type, together with a corresponding blade, having features to make it more advanced and to enhance the ease of its operation in respect to other known types, the blade being capable of being fitted between a comb and counter-comb in such a manner as to maintain its elasticity and to allow it to vibrate while shaving.

It has been shown that razors having the shaving edges curved toward the outside or having three edges (one middle edge and two sidelong inclined cutting edges).;.:s i1it themselves better to the various positions in which the shaving is to be done, since they permit shaving at tifnies with the middle cutting edge, at times with the inclined cutting edges on the one oron the opposite side, and lso shaving with all three cutting edges at the same time.

To maintain the elasticity of the blade so as to allow the same to deflect and vibrate while shaving, blade'fsiipporting pins have been provided on the comb or ori'fthe counter-comb, whereby the blade can be resilientl' ;supported therebetween, because of the discontinuity of jsaid supporting elements. Moreover, by making one theqedges of the razor and the corresponding cutting edge of-"blade shorter than the opposite edge, it is possible to exert a more accurate control on the shaving operation, since the shorter edge allows the visibility of the side streaksjhat have been shaved by the longer cutting edge. Furthermore, use can be made of the longer or of the sh cutting edge, according to whether that the shavin be done on wider or narrower, concave or conve or angulated streaks.

To positively prevent any possibility for the blade to cut at the corners, each of four corners of the comb and counter-comb is provided with a safety projection.

The above and other advantages of a safety razor and corresponding blade according to the invention are dis closed in the following specification with reference to the accompanying drawing which is given only by way of example. In the drawing:

Fig. 1 is a plan view of the safety razor and corresponding blade according to the invention, showing curved cutting edges on both sides.

Fig. 2 is a plan view of the safety razor with a cutting edge shorter than the opposite one. i

Fig. 3 shows in detail the discontinuous blade supporting projections provided on the counter-comb.

Fig. 4 is a further detailed view showing the peculiar shape of counter-comb, both edges of which show a wavy profile, whereby a discontinuous support for the blade is provided.

Fig. 5 is a side view of safety razor, showing the projections provided on the counter-comb for the discontinuous support of blade.

Fig. 6 is a cross-section of the razor completely assembled with the coun'ter-comb, blade and comb.

Fig. 7 is a plan view showing the contour of a blade having both cutting edges curved toward the outside.

Fig. 8 is a plan view showing the contour of a blade with tbreecuttinz edges. one straight middle edge. nd two inclined sidelong edges on ea h ide- Y The safety razor accordine o the inve n (see Fig 1 and 2) has the cutting edges 1 served t rd the ou side, said edges could be equal length (Fig. l) or of different lengths (Fig. 2). The latter embodiment suits itself for a better adaptation of the razor to various spots that are to be shaved, and'namely the shorter cutting edge is best suited for shaving angulated or concave streaks, and having the advantage of permitting visibility on both sides of the shaved streak.

On the counter-comb 2 and namely on its outer edges corresponding to blade cutting edges, the projections 2a are provided, whereon the blade 3 is supported in such a manner, that the same be locked in a non-rigid fashion betweenthe comb and the counter-comb, whereby its elasticity is kept unchanged and the blade is allowed to vibrate while shaving. As a matter of fact, in order to obtain a smooth and perfect shaving, it is essential that the blade be allowed to deflect and vibrate, to overcome the resistance opposed by the whiskers, whereby the shaving action is rendered unusually smooth and easy.

In order that the blade be locked so as to be able to vibrate while shaving, both edges of the counter-comb, corresponding to blade cutting edges, have been given a wavy shape, as shown by Fig. 4, thus showing a number of crests 2b, by which'the blade is discontinuously supported.

As shown in Fig. 4, five projections are provided for pressing the blade to the 'fmain portion of the combshaped supporting plate. a

The blade according to [razor profile, could have three cutting edges on each of its longitudinal sides, and namely one middle cutting edge "I0 and two sidelong inclined cutting edges d, e (Figs. 7, 8). Said two sidelong curved cutting edges could also have different radii, to allow the blade to better adapt itself to various spots that are to be shaved.

To positively prevent any possibility of the skin being cut by the blade corners, each of the four corners of comb and counter-comb,''are provided with projections whereby said blade corners are kept off from the skin.

transversely curved clamping plate superimposed on said supporting plate, said clamping plate being substantially parallel with said supporting plate for pressing the main portion of a blade against said main portion of said supporting plate, and having an edge formed with a plurality of spaced, projections having tips spaced a substantial distance inwardly from said edge of said supporting plate and of said blade, thereby leaving exposed a large portion of said blade in the region of said cutting edge thereof so that at least said large portion of said blade may vibrate-freely during operation.

. References Cited in the file of this patent UNITED STATES PATENTS 775,135 Gillette Nov. 15, 1904 847,308 Baker et al Mar. 19, 1907 868,697 Reed et al. Oct. 22, 1907 (Other references on following page) f UNITED STATES PATENTS 7 Hygonnet Mar. 1, 191 0 N NZ-3973:6129: Traylor Aug. 12, 1913 Haggargr -44.. Nov. 2, I920 Breakey 'et a1. Oct. '2, 1923 Schlussler June 24, 19:0 876,235

Behrman -n--- June 5, 1934 .0 .c t i a. T-. 12231 5 Mellon Q Apr. 24, 1945 FOREIGN PATENTS Britain May 10, 1934 France Oct. 4, 1932 France July 27, 1942