US1589826A

US1589826A - Safety razor

Info

Publication number: US1589826A
Application number: US85817A
Authority: US
Inventors: Neil A Strand
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-02-04
Filing date: 1926-02-04
Publication date: 1926-06-22
Anticipated expiration: 1943-06-22

Description

June 22,1926. 1,589,826

l N. A. STRAND SAFETY RAZOR Filed Feb. 4, 1926 Patented June 22, 192.6.

UNiTED f-sTATEs PATENT. OFFICE.

NEIL A. STRAND, QF BROOKLYN', YORK.

SAFETY nazca.

Applicatien led February@ jl926. Serial No. 85,817.

This invention rel-atesto cutlery and has particular .reference to safety razors.

Among the objects of the invention is to ,provide a safety razor having a flexible. blade provided 'with a plurality of cutting edges, said edges being all substantially straight and constituting the entire periphery of the blade.`

'Another object of the invention is to pro- Y vide a safety razor blade of normally flat blade, the blade thus having two oppositely disposed acute angles and two oppositely disposed obtuse angles.

A still further-object of the invention isto provide a safety razor including a guard. and #blade holding means co.operatingA therewith, the guard and holding means being similarly formed, each' having fiat end portions disposed at -an obtuse angle to each other and Haring outward or in a direction away from the handle and the bisector cf the an le 'which is coincident with the axis of the andle.

A;`further object of the invention is to providev a safety razor having a blade with a plurality of cutting ed es forming the complete periphery thereo the periphery being divided into a plurality of cutting edges, the edges being selectively operati-ve for shaving purposesin succession without adjustment of the -holding means and handle, and s o disposedwith respect tothe axis of the handle thatthe blade may be moved over the face in shaving along a path parallel to the handleand direction of movement of the handle while the. cutting edge occupies an inclined position with re and direction 'of movespect to said axis ment.

With the ment and combination of parts hereinafter described and claimed, and while Athe invention` is not restricted to the exact detailsof construhtion disclosed orsuggested here- .the 11ne 5--5 of Fig. 1.

:foregoing and other objectsin, 'viewthe invention consists inthe arrange-l like reference characters designate the same parts in the several views, and in which- Figure 1` is aside elevation of a preferred embodiment'.- of the invention in assembled condition.

Fig. 2 is a side elevation of the same mechanismin dispersed condition.

.Flg.v ,3 is a bottom plan view of the top or holding plate. 1

Fig. 4 is a plan view of' a blade.

Fig. 5 1s a transverse sectional detail on Fig. 6 is a top p lan view or as would be seen on looking down in Fig-l, but with portions broken away, showing larticularl the disposition of the guard Vngers wit respect to -each other andthe cutting edges of the blade.

Fig. 7 ,is a diagram indicating the manner of formation of the blades from al single uniform strip of steel.

Referring now more specifically to' the drawings, I show mg improved razor which comprises complete ut-four arts includin the blade, said `four arts being .a ard plate 10, a top or-holding plate 11, a lade 12, and a handle 13. A The handle-is of any suitable design preferably straightand rounded so as .to be formed rapidly and cheaply on a screw machine, and provided with a ysocket 14 at one end.

The guard plate is of rigid material having two Hat end portions disposed at an oblique angle to each other, and vhaving-a central hole 15`adapted to register with the socket 14. In lan the plate 10 is in the form of a rhom us having four equal sides and having a series of guard fingers. 16 formed along the edges, all the lingers being parallel t one another, while at the points'or an

points

17 and 18. All the ingers and .guard threaded there are'formed guard .i

points are bent downward slightly from the planes of the parts to which they are connected, or toward the handle, but serve to I effectively. guard' the sharp cutting `edges and .the several angles or points of the blade,

along the narrow dimensions of the guard plate. theA plateiis straight as shown clearly l10o all of-which 'are sharp.l Transversely or.'

guard plate at convenient points between the eXtreme ends and the central hole 15, are provided with holes 19.

'Ihe blades 12 are of equilateral .quadrilateral form or diamond shape and are cheaply andl rapidly formed from ribbon like metal such as 4steel as indicated in Fig. 7 by a succession of diagonal cuts 20. Either coincidentu with the cutting of the blades from the strip or at any other time, each blade is formed with a central hole 21 and two end holes -22 which are adapted in practice to register with the holes 19 in the guard' plate. The four edges of each blade eing straight are easilysharpened for cutting purpose, making a cutting edge around the entire periphery ofthe blade, and thereby the. facility for re-sharpening the blades' if desired is increased over blades having curved cutting edges. These blades are normally flat but being of thin metal are capable of easy flexing between their ends so as to adapt them -to conform to the flat sur- .o faces of the guard plate.

Any suitable means may be provided to flex the blade to make it conform to'and be held in place against the guardplate for practice, this means being shown as comprising the top or holder plate 11, which like the guard plate is of rigid metal and shaped so that it possesses two llat end portions having the saine angle of diver ence Jfrom each other as the guard plate. refeably the shape of the holding plate is similar to that of the blade and guard plate, though slightly smaller than the blade so as to expose the required amount of the cutting edge portion of the blade for shaving purposes. In the axial center of the top plate l1 is liXed a stud or screw 23 adapted to pass downward through the hole 21 in the blade, the holev 15 in the guard plate, and in-tothe socket 14 of the handle. When the plates are brought into close relation with each other with the blade between them and the handle aixed to the screw and tightened, theV blade willbe adjusted in practical position for shaving purposes and the parts will all be held from relative movement. Means is provided also to prevent relative rotationv of the plates and' blade, this means being shown as a pair of pointed studs 24 tiXed to the under side of the end portions of the top plate and extending downward with their axes substantially parallel to each other and preferably diamond shape in cross section to harmonize with the. general configuration of the instrument and to possess relatively sharp points adapted to pass readily through the holes 22 in the blade and into the holes 19 of the guard` plate. This taper of the studs insures easy assembly of the parts even though rthe blade is normally flat. It is to be understood, however, that with respect ieeeae to the shape of these studs or any other secondary details I do not wish to be unnecessarily limited.

'Io assemble the razor the blade is placed upon the center stud or screw 23 and the stud is then passed through the hole 15 of the guard plate, the operator applying force enough upon the plate to cause the stud 23 to be engaged in the socket 14 of the handle, and then by holding the plates and blade in one hand and turning thel handle with the other hand, the parts are clamped together and the studs 24av are caused to pass through the registering holes 22 and 19. In the use of the razor the handle is grasped in any convenient manner and either of the side edges ofthe plate will be drawn ovei` the face, the position of the cuttingv edge being inclined to the axis of the handle when the handle is drawn directly forward or downward parallel to or in line with its anis, as a result of the upward Obliquity of the end portion of the blade bearing the active edge and also because of the triangular or tapered form of such end of the blade. While for easy access to those portions of the face not ordinarily easily accessible, as for the upper lip, any acute angular portion of the blade may ployed in advance of the broader portion, for usual normal shaving purposes the handle and razor will be drawn directly in line with the handle, the broader point or portion of the blade moving in advance of the narrower or sharper point thereof. In any event, however, all portions of the-blade are amply guarded by the guard lingers and guard points to 'safeguard the shaver from being pric-ked or cut. Again, the parallel arrangement of the lingers 16, or with the arrangement of the fingers along one edge directly in lline with those of that edge directly across the narrower end portion of theblade, is most favorable for the reception. of the beard along 0r between the fingers while the razor is drawn in the line of the axis of the handle and with the shortery point of the blade trailing behind the broader point above described and making an inclined cut across the face.

I claim: t

l. In a safety razor, the combination of a guard plate, a top plate, a blade between said plates, said plates being of obtuse angular formation lengthwise thereof, a handle, and means associated with the plates and co-operating with the handle to hold the plates in operative position, the end portions of the plates diverging from each other in a direction remote from the handle. f'

2. In a safety razor, the combination of a handle, a guard plate having twol flat portions disposed at an angle to each other, the bisector of said angle being coincident with the axis of the handle, the dat portions of the guard being divergent from each other in a direction away rom' the handle and said bisector, a normally flat blade, and

" means tol flex the blade .centrallyto cause it to conform to and be held against the rl"he combination as set'forth in claim 2 in which the blade is formed with cutting edges along its entire periphery.

4:. The combination as set forth in claim Q- in which the blade is provided with four cutting edges intersecting one another inoblique angles, the guard plate-serving to hover and shield the angles of the blade as well as the cutting'edges thereof. n

5., lin a safety razor, the combination'ofa vguard plate and a clamping plate bothhaving similar obtuse angle formations, a blade between said plates, .adjustable means serving to bind the plates in close relation to each other with the blade grippedl between them, and auxiliary means extending from one plate through thel blade and to the other plate to prevent relative rotation between the blade and the plates, said auxiliary means including a stud projecting at an `ing from one of said) oblique angle from the plate which carries .it and-havlng its parallel to "the axis of the binding means.

handle having a threaded socket at one end, a guard plate having an obtuse angular formation and located adjaeent to said. socket with the end portions of the plate` `to the blade and having a rigid screw projecting from its center through said registering holes and having adjustable co-operation with said socket, said blade and plates being of similar diamond shape, and a pair of rigid studs having plates toward the other, said other plate and blade having holes to receive said studs, said studs being tapered and of diamond shape in cross section.

In testimony ture. y

NE1L A. straling. Y

arallel axes project-v whereoI ailix my signa- 30 6. In a safety razor, the combination .of a y