US2636262A

US2636262A - Double-edge blade type permanently assembled razor

Info

Publication number: US2636262A
Application number: US736480A
Authority: US
Inventors: Fisk John Edwin
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-03-22
Filing date: 1947-03-22
Publication date: 1953-04-28
Anticipated expiration: 1970-04-28

Description

J. E. FlSK April 28, 1953 DOUBLE EDGE BLADE TYPE PERMANENTLY ASSEMBLED RAZOR Filed March 22, 1947 ATTORNEY.

Patented Apr. 28, 1953 DOUBLE-EDGE BLADE TYPE PERMANENTLY] ASSEMBLEDY RAZOR John Edwin Fisk, Cleveland Heights, Ohio Application March 22, 1947, Serial No. 736,480

The invention relates to a permanently assembled double-edge-type safety razor blade mounting construction (hereinafter called razor) adapted tobe made available to the public at extremely low 'cost, yet which will enable a person to shave therewith at least as effectively and safely as with currently offered, relatively expensive razor frames designed for use with the various makes of double-edge springy blades commonly on sale.

The construction is arranged to employ readily pliable sheet metal (e. g. thin aluminum) or other sheet material which, when distorted, as by bending between dies will remain in the desired form and retain the necessary strength and rigidity.

Correlative objects are to provide a razor device wherein the blade edges are maintained in an effectual cutting but guarded position; wherein non-skid means for handhold purposes are provided without disproportionate cost, and wherein, in order to minimize weight, the necessary rigidity is accomplished by shaping of relatively soft and pliable thin-section sheet material rather than by the use of relatively heavy cross sections such as required for example in die castings.

Other objects will be indicated below.

Figures 1 and 2 are side elevations of the razor device taken at right angles to each other;

Figures 3, 4 and 5 are cross sectional views as indicated on Figures 1 or 2; and

Figures 6 and 7 are plan and end elevational views of a conventional blade when sprung to the shape it assumes in the present mounting.

The following is a description vof a preferred form, by way of example.

The main head portion l 'of the razor and the handle portion 2 are formed of a single strip of soft, readily pliable sheetmetal, the head being supplemented by a similarsheet metal bladebacking piece 3, hereinafter usually called a bolster plate.

The head portion top member I has the shape 5 Claims. (01. 30-32) slot). If the to ends of the bosses-fit the holes or enlargements than the bosses will elevate the central longitudinal portion of the blade as illustrated.- Depressed gable end portions la of the head portion 1 complementary to the bolster in cross section flex the side-connecting end portions 8 of the blade into curved form as shown. The free margins of the roof-shaped formations 4 depress the blade margins to bring the cutting edges 9 into overhanging but guarded relationship to hollow bead formations l0 formed on the bolster plate 3 as shown'in Figs. 2 and 4. The bead formations are in downwardly stepped relation to the archedcentral area portion ll of the bolster plate, so as to underhang the cutting edges of the blade in spaced relation thereto.

The roof-like shape of the head portion I and the arch shape of the bolster 3 afford substantial rigidity to the head structure.

To assemble the razor, a perforated double edged razor blade is placed over the projections 6 and sandwiched between the head portion 1 of the strip and the bolster plate. Respective portions of the strip which form the upper limits of the handle are then bent around the longitudinal ends of the blade and bolster plate, leaving the edges of the blade exposed. Distortion of the strip from a comparatively flat shape into tightly folded condition about the arched end margins of the bolster plate inherently causes work hardenin of the comparatively soft metal strip at each bend in the strip, imparting suflicient permanent rigidity to the distorted portions to retain the end portions 8 of the blade permanently in the curved form illustrated in Fig. 7 while binding the head portion of the strip, the blade and the bolster plate firmly together. It is intended that this razor be used only for the life of the blade permanently fastened therein. Disassembly can only be accomplished by complete distortion of the razor unit. The upwardly diverging arm portions I2 of the handle are preferably of gradually diminishing arch shape, cross-sectionally, being forced into underhanging complementary relationship to the under-side arched end portions of the bolster 3 as shown by comparison of Figs. 2 and 3. The arched cross-sectional shape of the curved arms l2 merge into fiat areas of the arms at l3, where pivoting of the head relative to the main part of the handle about its longitudinal axis is adequately resisted by joining together of the parts constituting the handle. The parallel portions 14 of the strip composing the handle are preferably made twist-proof by form- 3 ing said portions into channel shape (see opposite embossings I5) as shown particularly by Figs. 2 and 5., The embossings I 5 merge into the approximately fiat strip stock composing the lower portions of the curved arms [2.

To secure together the handle-forming portions of the strip stock, and also to provide a non-skid handle surface, one of the strip portions composing the handle 2 'is made wider than the other and has a double series of apertures it (see developed portion, lower left, Fig. alon which the opposite margins of the wider portion of the strip are bent at 41 around the associated edges of the complementary handle-forming portion of the strip. Obviously one edge of each of the handle-forming portions M of the strip could carry the :row of holes I 6 and be flanged about the adjacent edge of the other handle-forming portion id; but that would not of itself be certain to maintain registration of the two overlapped handle-.forming'portions asin the preferred construction illustrated.

I claim:

1. A razor construction comprising a strip-of sheet material formed into .a roof shaped head portion with gable ends connecting approximate- 1y flat sides and with handle-forming extensions brought together and joined beneath the head portion, and a bolster retained by the strip in underhanging relation to the head portion and having upstanding, dowel-like, blade-positioning means operative to engageedges of an'elongated springymetal blade, which edges define portions of an elongated opening along the longitudinal axis of such "blade, to holdthe bladein registration with the bolster, said bolster "having guards underhanging the cutting-edges of such blade in spaced relation'thereto.

2. In a shaving device comprising a permanently assembled razor frame and flexible blade, an elongated bolster of :arch shaped cross .section and guards downwardly offset therefrom at the side marginal edges soas to'underhang the cutting edges of the blade, and a top strip of sheet :material overhangin the blade and ,gen- I erally of gable roof shape in cross section, the strip having gable end-portions and U-shaped portions extending therebeyond in tightly embracing relation to respective end marginal portions of the blade and underlying end marginal portions of thebo'lster.

3. In a shaving device comprising a permanently assembled razori-frame :and :blade, .a .sheet metal bolster of archedtransvcrse cross-section having depending sides and contiguous marginal blade guard ortions extending outwardly in lopposite directions at the -lower-llimits of the sides, a flexible blade overlying the arched portionof the bolster, and atop piece of strip material having a raised and thereby hollow central portion the side edges of which engage respective portions of the bladein-wardly from the cutting edges toward its longitudinal axis .all along the blade edge portions, the top :piecelongitudinally of the bladebeyond the raised portion at each end thereof being in tight engagement withend marginal portions of the .blade and extending around the ends of the bolster between the depending sides thereof and located thereby to hold the top piece, blade ends and bolster firmly clamped together in face to face relationship.

4. A permanently assembled razor wherein an elongated strip of sheet material forms a blade retaining portion of the razor and has overlapped portions below the blade to form a handle, one of said end portions being wider than the other and with its edge margins extending around the edges of said other to fasten said end portions together, said wider portion having an aligned series-of .holes therethrough extending on two principal faces of the handle and theredouble-edge, elongated, normally fiat, metal blade having a central slot lengthwise thereof and connecting narrow end portions bridging the slot, the frame comprising a bolster coextensive with. such blade and having-substantially rigid rests positioned to support in straight form respective blade margins which lie. inwardly from but adjacent the cutting edges of the blade, the bolster having guards depending below-the rests and extending therealong, the 'top side of the bolster at the location for the two end portions of the blade being upwardly arched transversely of the blade as a substantially rigid-curved support for the narrow end portions of the blade, and a top member ofsheetmaterial adapted-to be secured to the bolster :for holding the blade thereon, the top member, when secured, having arched transversely extending end :portions the under surfaces ,of which are substantially complementary to the said arched portions-:of the bolster for pressing downwardly upon said'r-narrow end portions of the blade, thereby-in conjunctionwith the bolster surfaces mentioned, by 'flexure of the blade metal-.d-iverting the main body portions of the blade which lie between the cutting edges in-to planar sided gable roof form, the top member,--:for its entire length :between the arched surface portionstthereof exclusive of the side margins of the top member,..having its under surface concaved to an l-extent such as to exert substantially no downward pressure on said diverted main portions of the blade, the side margins of the top memberbeing substantially straight and disposed suiiiciently vclose to :theunderlying top surface portions of the bolster to maintain the cutting edge margins .of zthe blade thereagainst ,in downwardly ;-inclined,po.sition above the guards.

JOHN EDWIN References Cited in the.:,file.of this patent UNITED STATES PA'I'ENTS Number Name Y Date 840,371 Reams Jan. 1, 1907 1,455,665 Ruze Why 15, 1923 1,653,081 Adams Dec. 26, 1927 2,204,680 Kempf June '18, 1940 2,465,577 Holder Aug. 13, 1946 2,471,620 Harris 'May31, 1949