US2362851A - Safety razor - Google Patents

Description

NOV-['14, 1944. J. F. C. PRZYBYSZ SAFETY RAZOR Filed Jan. 7, 1944 JOSEPH EC. Pea 5x52.

IN VEN TOR.

taken on line 2-2 of Fig. 4.

Patented Nov.,14, 1944 5 UNlTED-I STATES PATENT OFFICE. Y -f esassl VSAFE-TY RAZOR/V v qdsephli". Q1 Pr zybysz South-Bend, Ind. Application January 7, 1944, Serial No. 517,384

'to improvements in tinuously and 'uniformly'near 'its cutting edge to prevent blade distortion, and which stretches the skin uniformly and smoothly in advance of the cutting blade. I

A further object isto provide a novel inner razor head effectively engaging a flexible blade near its cutting edge to prevent distortion therer of and carrying a guard bar to provide a nonclogging and easily cleaned passage "for shaving-cream defined in part by said blade, which head is adapted for use styles of razors. "Other objects will be apparent from the description' and appended claims.

In the drawing:

1 is an edge view of the razor. Fig. 2 is an enlarged transverse sectional view on multiple models and Fig. 3. is a perspective view of the inner clamping plate.

Fig. 4 is a top plan view ing plate.

Fig. 5 is a side view-of the inner clamping plate.

I, Fig. '6 is a transverse sectional View similar to Fig.2, illustrating "a modified embodiment of the invention.

Referringto thev drawing, the numeral I designates an elongated handle member having an internally screw threaded end bore adapted for connection with the central screw threaded stud H of an outer blade clamping plate 12. Plate 12 may be of any standard or conventional con- -struction, preferably curved transversely. As

illustrated, the plate l2: has thickened corner portions 'or lugs 13 projecting from its inner face and 'a central longitudinal'rib M. A conventional flexible double-edged blade I seats of the inner clamps Claims. (01. 30-70) 12,, and is longitudinally slotted at vl'lat each .side thereof. The slots terminatein spaced re- .lation to the ends of plate 16 and. communicate with short transverse inwardly extending slots or notches I8. The spacing between slots .l 'l is preferably substantially equal to the width of plate [2 whereby blade I5 is effectively gripped and supported throughout the major portion of.

its width with the plate edges substantially registering and only a narrow edge portionof the blade projects from said plates at eachside of the razor. The transverseslots i8 definewend bars 19 at the corners of the plate which are preferably of a width substantially equal to the width of the corner lugs 13 of plate l2 and which are bent relative to the plate It per se to. clear and fitsnugly over said corner lugs 13 when'the plates are in blade-clamping position. The outer portions of end bars H! are curved to'position the guard bar 2:0 in desired relation to the longitudinal edges of the central blade-engaging por tion of plate I5. As best illustrated in Figs52 and v5, uard bars 20 are spaced laterally outwardly from :the central blade engaging plate portion and are off-set inwardly' sufficiently to provide .a free :channel for passage'iof shaving cream which has a clearance of at least /64 of an inch from the inner surface of the edge portion of blade 15.

ably longitudinally ofi-set or dished at 2i to receive the rib "I14 of outer plate '12, and has a central hole 22 therein to receive stud, l. Spaced holes 23 in longitudinal alignment with and on opposite Sides of hole 22 may be provided to receive blade positioning studs (not shown) which are to be found on the outer clamping plates of some razors. Plate l-6 may be slightly longer than plate 12, and its end edges may be beveled at '24 tofacilitate separation oil the clamping plates for removal of a blade.

In this razor the functions of centering, aligning'aand positioning the blade are served primarily by the stud H, rib I4 and corners lugs The inner plate It serves its usual purpose of clamping and flexing blade 15. Note, however, that the outer surface of the central or body portion of plate It conforms to the contour of the inner surfaceof the outer plate and extends thefull width thereof. Thus the blade is clamped and held between said plates for the major portion of its width and is effectively supported thereby against longitudinal distortion and =flexure. Only a narrow portion at each side of the blade, constituting its plate It maybe suit said plates, and these projecting edge portions 1 are held against distortion by the registering adjacent clamping plate edge portions. In this connection, previous razor constructions, and

the effective clamping actionof the plates on the blades has been spaced inwardly of the cutting edge of the blade a substantial distance in concavo-convex blade-clamping plate having a threaded stud and blade positioning projections, andahandle 'detachably mounted on said stud such constructions, thereby permitting longitudinal distortion or waviness of the cutting "edge of the blade which may result in cutting or scraping of the skin in use.

Another important advantage of the instant,"

construction is that a long free channel is profacilitate cleaning of the-razor'simply and quickly after shaving. Note that this groove is accommodated by the transverse slots l1 whichpermit the end bars l9 to be bent croft-set relative to the central blade-engaging portion in inwardly spaced relationtothe side edges of the central 1 blade-clamping p'ortionthereof. The longitudinal guard bar provides for uniform smooth stretching of the'skin in advance of-the cutting edge Alsofit facilitates positioningof the razor at any angledesired by or natural for the user. 'A modified embodiment of the invention,"utiliz- .ing'an inner clamping plate of slightly'different construction, is illustratedin Fig. 6. Plate 30 is preferablyformed as a die casting; although it may be manufactured by other processes if desired. Plate 3 0'comprises a central body portion 3| having a convex blade-engaging face interrupted by alongitudinal groove 32 adapted to receive a positioning rib M on the outer clamping plate l2. ,A hole is formedcentrally in plate 3D for reception of the threaded stud of the outer plate and a plurality of holes 33 may be relation for the reception of other positioning studs (not shown). The longitudinal edges 34 ofcentral body portion 3| preferably register with the longitudinal side'edges of outer plate I2.

v 2,362,851 ground cutting edges, projects outwardly from curved relative to the body 3| alonglongltudinal linesspaced inwardly from the edges 34 of the body.

This construction possesses the same advantages as the Fig. 2 embodiment. Additionally, by provision of projections 38 the corners of the blade are protected against breakage upon accidental impact, as when the razor is. dropped, and danger that the user will nick or cut himself upon the corners of the blade incident to improperpositioning .orlrnanipulation of the razor is: avoided.

Iclaim: 1 .1. In a razor, the combination with an outer of an inner blade-clamping plate clamped between said outer plate and said handle and hav ing a central concavo conve'x portion complementary to said outer plate whose side edges register' with theside edges. of said outer plate, said side edges being outlined by U-shaped slots, the corner portions of said inner plate positioned out- ;wardly of said slots being bent relative to said r central portion to position a longitudinal integral guard bar in outwardly and rearwardly-off-set relation to the cutting edge of ,a blade-clamped betweensaid plates,

2. In a razor, the combination with. an outer concavo-convex blade-clamping plate having a threaded stud and ;blade positioning projections,

andgahandle detachably mounted on said stud,

of an inner blade-clamping plate clamped-between said outer plate and said handle, said inner plate having a central blade engaging concavo-' convex portion of substantially the same width as said outer plate, longitudinal guard-bars off-set outwardlyandrearwardly from said central portion and integral end barscarrying said guard bars and bent from said central portion, opposite end bars beingspaced transversely a distance less thanthe-width of s id central; portion,

3. In a razor, the combination with'an outer curved blade-engaging, plate and a handle deand handle and including a, central blade-engag- P o in e D1ate30 in longitudinally spaced P Guard bars 35 extend longitudinally at eachzt side of the plate 30 in laterally spaced oiT-set relation to edges 34 and are carried by end bars 36 projecting from the corners of plate"3ll.;- The convex faces of bars 36 are interrupted adjacent the points at which end bars 36 mergewith body portion.3l by recesses 3;? adaptedjto receive the positioninglugs. l3 at the'corners of outer plate l2. Projections 38 are formed in the end bars 36 extending-outwardly of thecurvd contour of the blade-engaging face of body portion3l and outwardly of edges 34 to define the outer end portions. of recesses 31. Projections 38 are shaped and proportioned for alignment with'the edged portions of the blade which project later- :ally from the clamping plates to protect the corners of said blades. The slot or groove separatngthe guard from body portion 3| at each side of the plate 30 is preferably of substantially the same U-shape defined and illustratedin the Fig. 2 embodimentso that end bars may be bent 0.1.

tion.

.ing'portion of substantially the same curvature and width as said outer plate and an integral U-shaped laterally. projecting guard whose leg portionsat the corners of. said plate are bent relativeto said central portion in inwardly spaced relation to the side edges of said central portion. ,4, In-a razonthe combination withan outer .plate havingan. inner blade-engaging face and a handle'detachably secured to said plate, of an inner plate having a u-shaped slot adjacent one longitudinal edgethereof to define a blade engag- .ing portion whose longitudinal edge substantially registers with' the edge of said outer plate. and a .Ufs'haped guard. whose le s are bent relative to .between in off-set outwardly spaced relation to the longitudinal edge of said blade-engaging por .5. In a razor, the combination with an outer blade-clamping plate having lugs projecting from ,its inner face at its corners anda handle detachably secured to said :plate, of an inner blade- -clamping plate urged againstsaid plate by said handle and having U-shaped'slots at opposite .sides to define a.central'blade-engaging portion and longitudinal guard portion, said central portion being of substantially the same'width assaid outer plate and cooperating therewith to firmly and continuously clamp a blade adjacent its cutting edges, said guard portion including end portions bent relative to said central portion inwardly from the side edges of said central portion and fitting over said lugs.

6. In a razor having an outer blade-clamping plate provided with blade-positioning projections at its inner face, an inner blade-clamping plate having a blade-engaging portion of a width slight- 1y less than the spacing of the edged portions of a double-edged razor blade, and integral U- shaped laterally projecting guard portions having leg portions at the-ends of said plate bent relative to said plate along bend lines spaced inwardly from the longitudinal edges of said blade-engaging portion, said blade-engaging portion having a central dished portion provided with a plurality of spaced openings and adapted to receive said blade positioning projections.

, of said blade projecting from said plates.

7. In a razor, the combination with an outer 8. In a razor, the combination with an outer plate having an inner blade-engaging face interrupted at its corners by projecting lugs, a blade notched at its corners and positioned by said lugs, and a handle carried by said plate, of an inner plate clamped between said outer plate and handle and having a U-shaped slot adjacent one side thereof to define a blade-engaging portion of substantially the same width as said outer plate and an integral U-shaped projecting guard including a longitudinal guard .bar and transverse end bars, the outer surfaces of said end bars being recessed to fit around said lugs and outwardly off-set laterally of said outer plate for alignment with the portion of said blade projecting from said plates.

JOSEPH F. C. PRZYBYSZ.

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