US2299104A

US2299104A - Razor blade

Info

Publication number: US2299104A
Application number: US394256A
Authority: US
Inventors: Monnet Georges
Original assignee: GUARDIAN MERCHANDISING CORP
Current assignee: GUARDIAN MERCHANDISING Corp
Priority date: 1941-05-20
Filing date: 1941-05-20
Publication date: 1942-10-20
Anticipated expiration: 1959-10-20

Description

oct. zo, 1942. MONNET 2,299,104

RAZOR BLADEV Filed May 20, 1941 INVENTOR,

f4 T TOE/VEKS Patented Oct. 20, 1942 RAZOR BLADE Georges Monnet, New York, N. Y., assigner to Guardian Merchandising (lorperation,A Montreal, Quebec, Canada, a corporatlon of Quebec,

Canada.

Application May y20, 1941, Serial No. 334,256

4 Claims. (C l.

This invention relates to vrazor blades Yfor safety razors.

` Razor blades now in use consist of steel and sink when dropped into water. It is a lmatter of general experience that the disposing of razor blades is a comparatively' diiicult l and incon-` venient procedure.` -They are liable Ytocaus'e injuries if left in waste'baskets andV garbage cans i and they clog the passages of drain pipes'and plumbing. Fur-thermo'rait is difficult t'o locate and recover a lrazor blade if it is dropped into` water while shaving.

An object of the present invention -is the provision of a razorblade which will float in water, so that it can be convenientlyY recovered if dropped by accident into a water-lled sin-k, and

so that it can be conveniently disposed of by oating in water circulating through drain pipes, plumbing and the like.

Other objects of the presen-t invention will become apparent in the course of the" following specification.

The objects of Vthe present invention may be realized through the provision of a razor blade comprising a steel portion provided with a shaving edge or edges and :a coating consisting of a comparatively light substance or substances, the total weight and specic gravity of the blade being such that the blade will float in water.

The coating may be applied to one or both surfaces of the steel portion of the blade and may be so disposed thereon that the clamping elements of the safety razor will engage the steel portion of the blade and not the coating, so that the coating will in no way interfere with the clamping and the adjustment of the blade upon the safety razor.

While any light material may be used for the coating, which in combination with the steel portion of the blade will prevent the blade from sinking in water, it was found advisable to employ layers consisting of comparatively small cork particles joined together by any suitable adhesive known in the art and capable of forming a permanent connection between the coating and the steel portion of the blade.

The invention will appear more clearly from the following detailed description when taken in connection with the accompanying drawing showing, by way of example, preferred embodiments of the inventive idea.

In the drawing:

Figure 1 is a perspective view of a loatable razor blade having two cutting edges.

p opening I 2.

Figure 2 is a transverse section along the line 2-'2V of Fig. 1.' f

Figure 3 shows a single-edge razor blade provided with a coating.

Figure 4 is a section along the line lLl-- of Fig.'3.

Figure 5 shows in section the head of a safety razor carrying a coated single-edge razor blade.

Figure 6 shows in section a diierent razor carrying a coated double-edged blade.

The' sai'ety razor blade shown in Figures 1 and 2 comprises a steel portion I having two cutting edges 8 and 9, shoulders I6 and iI :and a central opening I2 of the usual form. l

VThe steel portion 1 of the blade carries layers it to which are similar to each other in size and which are uniformly disposed in relation to each other. Layers i3 'and I5 are situated one over the other on opposite sides of the steel portion of the blade and extend between the cutting edge 8 and the central opening I2. The layers ill and I6 are also situated one below the other between the cutting edge 9 and the `central As shown in Figure l, the layers I3 to I6 leave `exposed the two cutting edges 8 and 9, as well as the edges of the central opening l2. These layers are rmly connected with the steel portion 'i of the blade by any suitable adhesive, which is not shown in the drawing, andwhich is water resistant.

Since the purpose of the layers I3 to ie is to serve as iioats maintaining the blade upon the surface of the water, their weight and their specific gravity should be so selected in relation Ato the steel portion of the blade, that the composite blade will not sink when dropped in water.

Vihile the layers I3 to I6 may consist oi a large number of different materials, it was found desirable to employ cork particles united by a suitable adhesive of the type used in bottle closures. It was found that comparatively thin layers of this material will maintain the blade upon the surface of the water.

The razor blade shown in Figures 3 and 4 has .a single cutting edge I'I constituting a part of a sheet of steel i8. The opposite edge of the steel portion I3 is enclosed by the usual U-shaped metallic cover I9.

The razor blade includes two coatings 29 and 2l situated on opposite surfaces of the steel portion I8 and firmly adhering thereto. The edges of the layers 20 and 2l adjacent to the cutting edge II extend at a distance from this edge so that a part of the steel portion I8 is exposed.

The opposite edges of the layers 20 and 2I may be in engagement with the edges of the metallic cover I9.

In this construction, the layers 20 and 2I follow substantially closely the outline of the blade portion I8 so that they also formrside

grooves

22 and 23 and a central groove 24 with which the steel portion I8 is provided.

As already stated, the layers 20 and 2I should have a small specific gravity and may consist of cork particles bound by an adhesive.

Figure shows the arrangement of a floating single edge safety razor blade upon the head of a safety razor having a supporting member or guard 25 and a clamping member 26 which is pivoted at 21. A raised portion 28 of the supporting member 25 extends through the central opening 50 of a razor blade having a steel portion 5I and

cork layers

52 and 53. The clamping edge 29 of the clamping member 26 is in engagement with the steel portion 5I of the blade close to its cutting edge 54.

Thus the

cork layers

52 and 53 in no Way interfere with the clamping of the blade, since the clamping elements engage solely the steel portion 5I of the blade.

Figure 6 illustrates the clamping of a floating double-edge razor blade upon a safety razor of the type illustrated in my co-pending patent application Ser. No. 149,050, led June 19, 1937, which has become Patent No. 2,264,323 of Dec. 2, 1941.

A safety razor of this type comprises a guard 30 which is carried by a frame element 3|, and which cooperates with two clamping members 32 and 33 actuated by a threaded pivot 34 situated substantially in the middle of the safety razor and rotated by the turning of the razor handle. The clamping members 32 and 33 move about supports 35 and 36, respectively, which are carried by the frame element 3 I.

The razor blade consists of a steel portion 31 having

cutting edges

38 and 39 and provided with four symmetrically disposed cork layers 40 to 43.

These layers extend at a distance from the cer`1' tral opening of the blade and at a suillcient distance from the

cutting edges

38 and 39 to enable the clamping edges 44 and 45 of the clamping members 32 and 33 to engage the metallic portion 31 of the razor blade. Thus, the layers 40 to 43 do not interfere with the operation of the razor, since the clamping elements 32 and 33 of the razor engage the steel portion of the blade.

It is apparent that the specific illustrations shown above have been given by Way of illustration and not by way of limitation and that the structures shown above are subject to Wide variation and modication Without departing from the scope or intent of the present invention. All of such variations and modiilcations are to be included within the scope of the present invention.

What is claimed is:

1. A blade for safety razors, comprising a metal portion having at least one cutting edge, and a coating adhering to said metal portion and being of light weight and capable of floating the blade in Water.

2. A blade for safety razors, comprising a cutting portion of comparatively great specific gravity and a layer adhering to said cutting portion and being of comparatively small specific gravity to float the blade when in Water.

3. A blade for safety razors, comprising a steel portion having at least one cutting edge, and at least one layer adhering to said steel portion and consisting of cork particles and an adhesive uniting said cork particles.

4. A blade for safety razors, comprising a metal portion having at least one cutting edge, and at least one layer adhering to said metal portion and being light in Weight and causing the blade to float in water, said layer terminating at a. distance from said cutting edge and exposing a part of said metal portion to enable a clamping element of a safety razor to engage said part.

GEORGES MONNET.