US915989A - Safety-razor. - Google Patents

Description

w. MOORE. SAFETY RAZOR.

APPLICATION IILBD MAY 26, 19%.

Patented Mar. 23, 1909.

UNITED STATES PATENT onsron.

WILLlAM I. MOORE, OF WASHINGTON, DISTRICT OF GOI JUMBIA.

SAFETY-RAZOR.

Specification of Letters Ihaten't i'atented March as, 1909.

Application filed my 26, 190B. Serial nu. 426,044.

To all whom it may cancer rt:

Be it known that I, WILLIAM J. MOORE, of Washington, in the District of Columbia, have invented a certain new and useful 1m- Hrovement in Safety Razors, and do hereby eclare that the following is a full,c'lear, and exact description thereof.

Figure 1 1s a perspective view of a safety razor embodying my invention Fig. 2 a seetion on the line 22 of lrig. 1 Fig. 2 a similar viewshowing a different position of the blade; Fig. 3 a perspective view of the bladeforming stri a one; and Fig. 4 a similar View of an embo iment of my invention, wherein the blade and-itsback are permanently joined together.

The object of my invention is to provide a safety razor in which can be used a blade of thin or sheet steel, which may be secured to the handle or holder by the impingement of the end of a screw upon the inner orunder side of the blade structure so as to secure the engagement or contact of the cutting ed e of the b ade with the surface of the guard a rocking or lever-like action, a safety razor of this type being of very simple construction, and the blade while susceptible of all required adjustment, is firmly held. The use of sheet steel for the razor blade is desirable, because ofthe ehea'pness of the blades thus made, and it is for that reasonthat I have made this invention to enable blades made of sheet steel to be used in safety razors of the type I have just described.

As I prefer to construct a safety razor embodying. my invention, I mploy a holder that consists of a plate 10, having at one edge a series of teeth or fingers 11, of the usual form in safety razors, and having at the opposite edge a flange l2, preferab' perpendicular to the plate 10, from which ange one or more lugs or li s 13 project forward over the plate '10, su stantlally parallel therewith, between which and the plate 10 a suflioient s ace exists to receive the backportion of the lade and admit of the rocking of the latter to press and hold the cutting edge against the guard teeth or fingers, b pressure ap lied to the under side of the ack of the bla e by means of the end of a screw 14 on the upper end of a handle 15, which screw passes t rough a threaded opening in the plate 10.

The blade of my razor consists of a piece or strip 16 of sheet metal, having one edge ground or sharpened,.and a hack 17 cons'is'ting of a bar or strip of metal provided with a slot or slit of such extent as to receive preferably a large portion of the piece or strip 16 so a to overlap the latter on both sides. In order to secure the leverdike or rocking actionof the blade, which is necessary to bring and hold its cutting edge close against the outer surface of the guard fin ers, it is essential that-the point of contact the screw end with the back of the blade be in rear of the point of contact of the backer the blade with the fulcrum forming surface that the overhanging leg or legs 13 afford, and to provide this condition, 1 form a cavity or recess 18 in the blade back, which leaves at the rear of the blade back a thin wall or rib i9 that is wholly in rear of that portion of the opposite or outer side of the blade back that engages thefulcrrifn-forming lug or 111 s, so that when any portion of the top of t e screw bears against the edge of said rib or wall, it will infalliblrock or swing the cutting ed e of the Ma e in contact with the surfaces 0 the guardfin ers. 'The-scriew-end engagin edge of said ri is referably convex roan ed toeons'tltute simply a line of con act, and the end of the screw is flat, so as to admit of ample'\shifting of the blade for the purpose of adjusting its cutting edge with reference to the guard fingers, and yet at all points of its adjust t, an ade Irate bearing of the screw may behad. W on the back of the blade is against the flan e- 12, the razor is adju'sted for a; medium s ave, theflan e 12 thus constituting a stop or gage for this adjustment, while to forma sto or gage to fix'the adjustment of the bla e for a close shave, a shoulder 11' is formed on the upper side ofv the end guard fingers or teeth 11. By providing steps or ages, the matter of the adjustment of the" 'lade for a medium or a close shave requires no s ecial attention on the part of the user. course,if the user desire, the cutting edge of the blade may be adjusted to points intermediate those fixed by the stops, and whatever he the point ofadjustmen-t, the blade will be roperl' and firmly held'by reason of the lbrm the engaging surfaces of the blade and screw end.

In the form of my invention illustrated in Figs. 1 to 3, the strip portion 16 of the blade is detachably connected to the back 17 so i that one strip after another may be used I screw-engaging wall or rib 19 will be formed on both sides of the back, by recessing or cut- .of the slit at'the end are outward still further facilitate the insertion of the tac able,

with the same holder, and'in such a case as this the strip-engaging lips of the back 17 are slightly elastic or springy, and the slit or slot widens from theouter edges of the li s inwardf This insures a close contact of t e lips and the strip, and besides facilitates the insertion of the strip in the slot which is done by an endwise movement of the strip, for the stri being substantially thinner than the wi er ortions of the slit, the .en-

trance ofthe strip can easily be efiected-by first inserting a corner thereof in the wider portions of the sht, and preferably the walls y'flared to stri When the strip and holder are deare groun to form a cutting edge, so as to make it inconsequential which side of the strip is uppermost when inserted in the bac. 1

In the form of my invention illustrated in Fig. 4, where the blade back and strip are permanently united, this may be accomphshed merely byxtightly'pinching the lips of the back upon the strlp, and in this case the strip may be ground only on one side to form the cutting ed e, if preferred.

It may be desirable 1n both forms of blade illustrated to render them applicable to the holder either side up, and 1n this case a ting away the adjacent metal. By provid-. ing both sides of the back with-the screwengaging Wall or rib, all liability of an inexperienced person getting the blade in the holder wrong side up, which would result in the'improper placing of the cutting edge, is obviated. I, however, do not limit myself to this construction only.. A

The back 17 may be easily and inexpensively formed by folding over a strip pf t e metal, and preferablythe outer sides 0 lips are beveled or chamfered off, especially in the case of the form of my invention illustrat'edin Figs. 1 and 2 not only to enhance the appearance of the blade, but to render I 4 springy as I have before explained. 3

The recess or cavity to form the rib 19, is

' most economically formed by wholly punchwing thus described my invention, what I claim is': v

1. A blade for safety razors, com osed of inglout'the metal in advance of the'rib.

a piece or strip of sheet metal, an a back having a blade-receiving slit, said back having on one side a fulcrum-engaging surface, and on the opposite side in rear of the fulpr'eferably both edges of the strip blade holder, a

a recess bemg formed in advance of sai rib. 2 In a safety razor, the combination of a blade holder consisting of a plate forming a uard for the blade and an overhanging ro- 'crum-engaging surface a screw'engagin rib,

ection, a blade composed of a strip of s ieet metal and a back overlapping opposite sides of the strip, said back having a recess or cut awayportion on one side, forming a rib at the rear of the back, and on its other side a projection-en aging surface, and a screw engaging a t'ireaded opening in said plate and'having its end impinging on said rib in rear of said projection-engaged surface, said blade being shiftable in a direction crosswise of the screw. r

3. In a safety razor, the combination of a blade holder consisting of a plate forming a guard for-the blade and an overhanging roection, a blade composed of astrip of s eet metal and a back overlappingppposite sides of the strip, said back havin ,a recess or cut away portion on both sides, orming on each side a rib at the rear of the back, and having on each side a projection-engaging surface, and a screw engaging a threaded opening in said plate and having its end imp nging on that one of said ribs, which is contiguous to the plate, andata point in rear of said projectlon-engaged surface, said blade being shiftable in a direction crosswise of the screw.

4. In a safety razor, the combination of a blade holder, a blade, stops to fix the posi- .ward and backwardbetween said stops, and

means to hold the blade in either of its said positions.

5. In a safet 'razor, the combination of a blade, stops to fix the osition of the cuttin edge of the blade at different positions wit reference to the guard accordmg to the degree of closeness of the shave de- 1 sired, said stops consisting ofa bladeen'gag.-

ing flange on the holder,--and rojections on the guard, the blade bein shi table between said-stops so that it may e jmoved'from engagement with one to engagementyv-ith the other, and means toholdflthe -bla'de in its said two 'positions.

In testimony that I claim the foregoing I v have hereunto set my hand.

WILLIAM J. MOORE.

Witnesses:

CHAS. J. WILLIAMSON, CLYDE 'B. WEIKERT

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