US2564856A

US2564856A - Razor

Info

Publication number: US2564856A
Application number: US572934A
Authority: US
Inventors: Piotrowski Anthony
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-01-15
Filing date: 1945-01-15
Publication date: 1951-08-21
Anticipated expiration: 1968-08-21

Description

Patented Aug. 21, 1951 UNI-T ED S' -TAT E s PAT ENT OFFICE RAZOR Anthony Piotrowski, Chicago, Ill. Application January. 15, 1945,.SerialNo. 572,934

1' Claim. 1

This invention relates to improvements insafe ty razors.

An object of this invention is the provision of improved means for the mounting of a flexible blade upon a safety razor.

A further object of this invention is the provision of an improved safety razor with guard means by which to prevent cutting of the skin during shaving; the blade being so mounted as to permit the efficient disposal of hair and shaving cream.

Other objects and advantages of the invention will be apparent from the following detailed description.

In the accompanying drawings, forming a part of this specification, and wherein similar reference characters designate corresponding parts thruout the several views- Figure 1 is a plan view of an improved blade structure.

Figure 2 is a plan view of the under side of the head structure of the safety razor showing an improved guard plate.

Figure 3 is a cross sectional view thru the head structure of the modification shown in Figure 2; the view being taken substantially on the line 3-3 of Figure 2, with a handle shown mostly in elevation.

The safety razor structure includes a handle II! with one end portion I I provided with a shank I2 preferably having an annular flange I3 which cooperates with an internal flange I4 of a clamping nut I5 to provide a union connection. The nut l5 has a finger engaging externally knurled flange I6 and is internall screw threaded at I! for detachable connection upon a screw threaded shank 2| of the top plate 20. There is a polygonal (as square) cross sectional socket I8 in the shank I2 at the base of the screw threads IT.

The top plate 20 is rectangular in plan and transversely curved as shown in Figure 3. Centrally of the concaved side a shank 2| is provided, integral therewith. The shank 2| at its outer end has a square or polygonal cross sectioned reduced extension 22 adapted to fit in the polygonal cross sectioned socket I8, which of course cooperates in preventing turning movement of the top plate when it is located upon the shank I2. The top plate 20 is provided at opposite sides of the shank 2|, along its longitudinal axis, with elongated

tapered bosses

23 and 24.

A blade structure 25 is provided having a flexible body portion 26 provided with a circular central opening 21 and the elongated end openings 2B. The body portion 26 is provided at the ened cutting strips 29"which may be welded orotherwise secured tothe flexible body portion- 26. This provides a blade having a hardened cutting edge which may be resharpened, whereas the flexible body portion 26 may be made of relatively inferior steel.

The guard plate 30 shown in Figures 2 and 3, is of transverse concave-convex cross section, being outwardly convex, including circular and end elongated openings for receiving the screw shank 2| and

end bosses

23 and 24 respectively of the guard plate.

The guard plate 30 is provided at its outer marginal edges with a continuous guard portion 3i each having next adjacent thereto and inwardly thereof a longitudinally-extending groove 32 (see Figure 3) over which the cutting edge of the blade lies; the guard margins 3I defining convex surfaces 33 beyond the groove 32. The material of the guard plate 30 along the groove 32 and extending partly into the convex surface 33 and inwardly toward the longitudinal center of the guard plate beyond the groove 32 is provided along each marginal edge with a series of elongated openings 35 for the passage of debris during the shaving operation. Between the openings 35 there are located along each margin of the guard plate a series of bosses or projections 36, extending outwardly from its outer face 31, upon which the blade body portion 26 is adapted to lie. In this manner the blade does not contact any other portion of the guard plate but these projections, yet it may be flexed as will be perfectly apparent from Figure 3.

In assembly, the blade 25 is conventionally associated with the top plate 2|], both are disposed upon the guard plate 30 with the free end of the shank 2i in the mouth of the nut l5 and the latter is then rotated to cause coupling of the parts, as is now obvious.

As may be seen in Figure 3, the grooves 32 underlie the cutting strips 29 and their edges, and the openings 35 extend from and partly through the guard portions 3 I, through the grooves 32 and toward the longitudinal center of the guard plate.

The parts of the razor, other than the blade, may be made of some light material, such as aluminum or one of its alloys.

From the foregoing description of this invention it is apparent that I have provided an efficient safety razor so arranged that the parts are accessible and efficient and clean shaving may be facilitated.

Various changes in the shape, size and arrangement of :parts may be made to the form of invention herein shown and described, without departing from the spirit of the invention or the scope of the following claim.

I claim:

In a safety razor provided with a flexible blade, said safety razor including a rectangular outwardly convex guard plate having an outer face, a longitudinally-extending marginal edge, and a longitudinally-extending guard portion extending from said marginal edge toward the longitudinal center of said plate, said guard ortion being outwardly convex, said guard plate have a longitudinally-extending groove inwardly of and next adjacent said guard portion, said groove being constructed and arranged to underlie a cutting edge of said blade, and said guard late being provided with a plurality of spaced-apart longitudinally-extending openings extending through said guard plate from and partly through said guard portion, through said groove and toward the longitudinal center of said guard plate, and

4 a plurality of blade-supporting bosses between the ends of adjacent openings and extending outwardly of said outer face.

ANTHONY PIOTROWSKI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,119,122 Schaefer Dec. 1, 1914 1,195,259 OReilly Aug. 22, 1916 1,409,978 Smith Mar. 21, 1922 1,496,296 Chance June 3, 1924 1,513,454 Ferry Oct. 28, 1924 1,581,694 Smith Apr. 20, 1926 1,751,215 Muller Mar. 18, 1930 FOREIGN PATENTS Number Country Date 138,664 Switzerland May 16, 1930