US1169665A - Safety-razor. - Google Patents

Description

R. MARX.

SAFETY RAZOR.

' APPLICATION FILED IAN. 9, 1913.

Lwg. Patented. Jan. 25, 1916.

:l: "lll F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 JOHN 1B. STETSON,

0F ASJEIJBOURNE, PENNSYLVANIA.

SAFETY-RAZOR.

arcanes.

Specication of Letters Patent.

Application led January 9, 19M. Serial No. 740,985.

Une object of my'invention is to provide .A

a safety razor ofI the utmost simplicity of construction, which in addition to being relatively inexpensivel to manufacture, vshall -be provided with a relatively uncomplicated device for positioning?I and releasing the I razor blade.

Another object of the invention is to provide a razor whose blade holder shall consist of but two relatively movable parts, one of Dwhich is formed to hold the blade in the proper position, while the other is being applied.

'lhese objects and other advantageous ends l secure as hereinafter set forth, reference being had to the accompanying drawings, in which,

Figures l and 2 are respectively afront and a side elevation 'of a safety razor constructed according to my invention; Figs. 3 and 4L are respectively an inverted plan and a rear elevation of the razor; Fig. 5 is a plan of the razor showing the blade retaining plate partly removed; Fig.` 6 is a front elevation showing the handle with the guard plate and a blade mounted on the latter;

Fig. h7 is a plan of one of the razor blades; Figs. 8 and 9 .are plans illustrating modiiied-for1ns of the blade and guard plate, and, Fig. l0 is an enlarged side elevation of the guard shown in Fig. 9 illustrating a blade in position thereo ln Figs. l to 7 of the above drawings, l represents a handle to the top of which is rigidly fixed a blade receiving guard plate4 9; of rhomboidal outline and inclined forwardly as well as downwardly toward one side. Said blade holder at its forward edge is provided with a series of guard teeth 3 projecting in planes substantially parallel 'to a plane passing through the center-line of thehandle l. As shown in Fig. 2, this guard plate is upwardly concave and as shown in Fig. 5 at its rear edge is provided with two upwardly turned lugs Il.

l'lhe blades employed with my razor have a substantially rhomboidal outline, as indicated at 5 in Fig. 'l' and in addition to lugs 6 projecting at opposite ends of. one

of its edges, each blade has on the same edge a rearward projection 7 which isundercut at lts ends as indicated at 8. This Y projection is of such a length as to closely ht between the lugs l of the supporting guard plate 2 and as shown in Figs. 5 'and 6, said lugs are beveled or slightly inclined at their adjacent ends to fit into the undercut portions A8 in such manner as to prevent the withdrawal of a blade in a plane'substantiallyparallel to and immediately adjacent that of the guard plate.

For retaining the plate in operative position l provide a cover plate 9 having an elongated rhomboidal outline and provided Patented dan.. 25, ll9ld.

at each end with a pair of clips 10 whose ends are bent toward each other in such manner as to frictionally engage the 11nder side of the guard plate and also strike the lugs 6, although with the projection 7 and its co-acting holding lugs l which like-y wise serve to limit the upwardniovement of said cover plate 9, said lugs 6 may be omitted without departing from my invention.

When it is desired to mounta blade in the holder, it is laid on the upper face of the guard plate 2 with its projection 7 extendingbetween the lugs l so that it is held from moving in a plane substantially parallel to that of said plate. While so posi` tioned, the retaining plate 9 is applied by engaging one of its clips l0 with one end of the guard plate,thus bringing said rst named plate into the position shown in Fig. 5. Thereafter it is moved from this position into a position in which it lies fairlyover the guard plate with its sides parallel to the sides thereof as well as to those of the 4blade and with the secondY clip 10 frictionally holding to the under side of the guard plate. ln order to remove a` blade, the operator places his first and second fingers 'against the rear face of the guard plate on out danger of the operator being cut since after eaid blade haeonce been placed in the lll@ position shown in Fig. 6,' with its projection 7 held between the lugs 4, it cannot easily be dislodged but is properly held in the. correct position until the retaining plate lis applied as above described. If desired I may provide the guard plate 2 with two small projections llas indicated in Fig. 5 immediately adjacent the twol ends of that edge having the guard teeth 3, the purpose of these being to provide a two point support for the blade body in the vicinity of its cutting edge. It'will be noted that the projection 7 of the blade has a width substantialljT equal to the'thickness of the lugs 4 f ofthe guard plate 2; it being immaterial whether said projection fits between two lugson said plate or whether, as shown in Figs.

8 and 97 said blade 5a has a recess 7a, one edge of which is undercut at the ends for the reception of a single lug 4a on the guard plate 2a. v

From Fig. 10 it will be parts are assembled, the ends of the cutting edge .of the blade rest upon the endmost guard teeth 3a of the series and these are not only slightly longer than the teeth 3 between them but are curved upwardly so that said cutting edge is spaced away from and unv supported by said intermediate teeth. The projections 11, however, engage the blade body just back of the cutting edge so as to positively support it when it is pressed toward the plate 2 by the retaining plate 9.

Obviously the lengths of these projections may be very accurately xed during manufacture to secure the desired Vadjustment of the opposite edge of said plate being turned up. and having their adjacent ends beveled; a blade having a projection from the edge opposite its cutting edge provided with undercut ends fitting the beveled ends of the turned up portions on the guard plate? and i also having end projections; with a cover seen that when the handle', a guard plate mounted thereon having guard teeth on one edge and avportion of its opposite ,edge turned up; a blade formed to have holding engagement with said lturned up edge portion and provided with laterally projecting lugs at its oppositeends; with a cover plate having clips at its ends (formed to frictionally engage the guard plate and abutting on the laterally projecting lugs of the blade when the latter is in its operative position. V

3. A razor blade having an undercut projection on its rear edge and formed with projecting lugs on the rear portions of its opposite ends respectively.

4 A razor blade of rhomboidal outline having a projection at its back edge formed with undercut ends; with lugs' at the opposite ends of the blade adjacent its rear edge.

5. The combination in a safety razor, of a handle; a guard plate mounted thereon having guard teeth at one edge and provided with two upturned portions at its opposite edge; a blade abutting said upturned portions and provided with a projection extending between the same, said blade also having projections at its ends adjacent its rear edge; with a cover plate slidably engaging the blade and having end clips Vrespectively engaging opposite ends of the guard plate, said cover plate also abutting on the upturned edge portions of the guard plate and the clips positively engaging the end projections of the blade to hold the same' in place.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

RICHARD MARX.

Witnesses:

WILLIAM E. BRADLEY, WM. A. BARR.

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