US1826341A

US1826341A - Safety razor

Info

Publication number: US1826341A
Application number: US395225A
Authority: US
Inventors: Irving S Bodkin
Original assignee: Gillette Safety Razor Co
Current assignee: Gillette Co LLC
Priority date: 1929-09-26
Filing date: 1929-09-26
Publication date: 1931-10-06
Anticipated expiration: 1948-10-06
Also published as: FR702326A; NL28822C; BE373621A; GB362435A

Description

I. S. BODKIN SAFETY RAZOR Oct. 6, 1931.

Filed Sept. 26. 1929 fi/////// w lNvENToR J: .5' TTORNEY Patented Get. 6 1931 UNITED STATES IRVING- S. BODKIN, OF NEW YORK, N. Y.,

OF BOSTON, MASSACHUSETTS, A. CORPORATION GILLETTE SAFETY RAZOR COMPANY, OF DELAWARE PATENT OFFICE ASSIGNOR, IBY MESNE ASSIGNMENTS, TO

SAFETY RAZOR Application. filed September 26, 1929. Serial No. 395,225.

My invention relates to improvements in safety razors, and has particular reference to the class-of safety razors in which a flexible blade is clamped between two members 6 for shaving.

- An object of my invetion is to retain a blade on one of the razor members, such as the guard member, when the members are separated, so that the blade will not be dislodged from the member by tipping or shaking of said member, and Whereb wiping of the blade while upon said mem er is facilitated.

Another object is to cause the razor memher that is not provided with the blade-retaining means to resist slidin of the blade between the members in a longitudinal direction.

My invention comprises novel details of improvement that will be more fully hereinafter set forth and then pointed out in the claims. 5

Reference is to be had to the accompanying drawings in which,

Fig. 1 is an end view of a safety razor embodying my invention; 1

Fig.2 is a section on

line

2, 2 in Fig. 1;

Fig. 2a is an end view looking from the ri ht hand side of Fig. 2;

ig. 3 is a plan viewof the blade; 3 Fig. 4 is a plan view of the razor assembled for use with backing member partly broken faway; Fig. 5' is a plan view of the guard member;

Fig. 6 is a plan view'illustrating application of the blade to the guard member, or removal of the blade therefrom; Fig. 7 isa plan view illustrating the blade in shaving position upon the guard member; Fig. 8 is a section on line '8, 8 in Fig. 7; Fig. 9 is a section on

line

9, 9 in Fig. 4, before the members are clamped against the blade for shaving; v

Fig. 9a is a section similar to Fig. 9, showing the parts in shaving position;

Fig. 10 is a section on line 1O, 10 in Fig. 1; Fig. 11 is a section on line 11, in Fig. 7, and Fig. 12 is a modification showing blade retained on clamping member instead of guard member.

adapted to pass through an opening 5 in the Similar numerals indicate corresponding parts in the several views.

At 1 is a guard member for blade 2, said member having comb-like teeth luv. for the blade edges. At 3 is a backing member for the blade. An well known or desired means may beprovi ed for clamping the

members

1 and 2 against the blade. I have shown member 3 provided with a threaded stud 4.

blade and through an opening 6 1n member 1, which stud is adapted to engage a threaded opening 7 in a handle 8, (Fig. 2), for clamping the

parts

1, 2 and 3 together for shaving. One of the razor members, such as the guard member 1, is provided with

studs

9 and 10, projecting from the blade-receiving side of the member, adapted to enter openings 5m in the blade that are spaced on opposite sides of the central opening 5, when the blade is laid upon said member, as illustrated in Fig. 6. At 11 is a relatively narrow elongated rib upon member 1, shown extending longitudinally along the member from the stud 10 toward the adjacent end of the member, and adapted to enter the longitudinal slot- 12 in the blade that extends between the openings 5 and 5a, said slot and openings being in open communication, (Fig. 3). The openings 5a in the blade are elongated or slotted towards the adjacent ends of the blade, at 13. The

studs

9 and 10 and the blade openings 5a are complemental and are wider than the slot 12 and the slotted portions 13 of the blade in a transverse direction or toward the guard teeth and the cutting edges of the blade, so that when the blade is laid upon member 1 they studs will pass through the openings 5a and the rib 11 will project into the slot 12, (Fig. 6). The studs 9and 10, on their sides toward the guard teeth, are undercut, at 9a: and 10a, (Figs. 8 and 9) so that the narrow parts of the studs will receive the slot 12 of the blade, the studs thereby being what may be termed headed, to overlie adjacent edge portions of the blade in shaving position. When the blade is slid along the member 1, from the position in Fig. 6 to the shaving position in Fig. 7, the blade openings 5a W111 pass away from the studs and the latter m will enter the slot 12 of the blade, and the outer overlying or headed portions of the studs that extend over the blade will retain the latter on member 1, (Fig. 9) The outer end of rib 11 is shown undercut or reduced angularly to receive the adjacent slot portion 13 of the blade in shaving position of the latter to limit slidin and lifting of the blade, Fig. 2) The mem er 1, at the end opposite t e rib'll, is shown provided with an upstanding lug 14:, that is undercut or reduced angularly, to receive a notch or recess 15 at the adjacent end of the blade in shaving position, (Fig. 2). The blade openings 5a, the 15

slots

12 and 13, and the notches or recesses 15 at both ends of the blade, are symmetrical- 1y disposed respecting the longitudinal axis of the blade, so that the blade may be reversed end for end upon member 1, with either face 2 of the blade against said member, so that the studs, the

slots

12 and 13, and the lug 14, will cooperate appropriately with the blade to retain it upon said member.

The backing member 3 is shown provided with a projection 16, extending toward the blade to enter the notch 15 at the adjacent end of the blade to prevent outward endwise movementofthe blade before being clamped. The members 1 and 3 are shown curved in a transverse direction to clamp the blade in a curved position for use, (Fig. 9a) The cur vature of the inner face of member 3 is on a shorter radius than the curvature of the outer face of member 1, providing a hollow space under member 3 in which the

studs

9 and 10 are received when the members 1 and 3 are clamped against the blade for shaving with the outer edges of the member 3 bearing against the blade. At the ends of mem- 40 ber 3, shown adjacent -to the corners, are

lateral projections 17, spaced apart, that are adapted to extend beyond the adjacent end portions 18 of the blade, and to bear against the projecting portions 19 at the ends of the the blade. The

studs

9, 10 and the bar 11 Will keep the blade in shaving position on member 1, with the cutting edges of the blade in shaving relation to the guard teeth, and the projections 17 of the backing member 3,

j by engagement with the portions 19 of the blade, will keep the member 3 in proper shaving position upon the blade. 1

When the blade has been laid upon member 1, as in Fig. 6, and is slid along said member to the shaving position in Fig. 7, the studs '9, 10 and the bar 11 will guide the blade and keep it from edgewise displacement and in pro er position, and so that the bladewill not all off the member during no proper handling, the blade then being in position to receive the backing member upon it. The member 3 will be guided to proper position upon the blade by the projections 17 engaging the appropriate parts of the blade,

35 with the stud 4 passing through the openings 5 and 6 to receive the handle. When the handle is screwed on stud 4 the parts will retain their relative positions, since the blade cannot shift edgewise relatively to the

studs

9, 10 and the bar 11. When the backing member 3 is removed the blade will be exposed upon the member 1 and may be wiped on top thereof without being dislodged therefrom. the

studs

9 and 10 and the blade openings 5a are shown substantially in corresponding diamond-like shape whereby they are elongated transversely of the blade so that the headed portions of the studs may overlie the metal at the sides of slot 12 to keep the blade down on the member 1 in use and while cleaning and handling. When the members 1 and 3 are clamped against the. blade the edges of the latter along the slot 12 are resisted by the overlying. headed portions of the

studs

9 and 10, thereby preventin the metal along the slotted portion of the blade from bending outwardly under the bending strain, and reducing danger of the metal of the blade at the end portions aligned with the slot from breaking. The construction of the blade provides for increased flexibility and enables a thicker blade to be provided than the so-called wafer blades in use.

Having now described my invention what I claim is:

1. A safety razor comprising blade clamping members having transversely curved blade clamping surfaces, and means to retain said members upon a blade, one of said members having headed studs to enter openings and a slot entirely within the blade to retain the blade upon said member.

2. A safety razor as set forth in claim 1 in which the member having the studs is provided with a bar to enter an opening and the slot of the blade.

3. A safetyv razor comprising blade clamp ing members having transversely curved .blade clamping surfaces, and means to retain said members upon a blade, one of said members having headed studs and having a bar narrower than the heads of the studs extending longitudinally along said member to enter openings and a slot entirely within the blade to retain the blade upon said member. 4. A safety razor as set forth in claim 3 in which the outer end of the bar is reduced to receive a slotted portion of the blade at one of the openings.

5. A safety razor comprisingblade clamping members having transverselycurved blade clamping surfaces, and means to retain said members upon a blade, one of said members having headed studs that are elongated transversely of the member to receive openings in the blade corresponding thereto, said studs being arranged to receive a slot in the blade and to overlie the blade adjacent to said slot to retain the blade upon the member. 6. A safety razor as set forth in claim 5 in which the member havin the studs is provided with a bar to enter t e slot in the blade. 7 A safety razor comprising blade clampmg members having transversely curved blade clamping surfaces, and means to retain said members upon a blade, one of said members having a longitudinal bar having a reduced outer end to receive a slot in the blade and to engage a portion of the blade at the end of the slot.

8. A safety razor comprising blade clamp ing members havin ransversely curvedblade clamping surfaces, a (1 means to retain said members upon the bla e, one of said members having a lug adjacent to one end thereof, said lug having a reduced inner portion to receive an adjacent outer end of the blade.

9. A safety razor comprising blade clamping members having transversely curved blade clamping surfaces, and means to retain said members upon a blade, one of said members having headed studs to retain a blade upon said member, the other member having projections to engage the blade to retain the said member in operative position upon the blade.

10. A safety razor as set forth in claim 9 ,7 in which the member having'the projections is provided with another projection to oppose the blade to keep it from sliding.

11. A safety razor comprising blade clampin members having transversely curved blade clamping surfaces, means to retain said members upon a blade, one of said members having headed studs, and a blade having spaced openings and having a slot communicating with said openings entirely within the blade to receive saidstuds, narrow portions of the studs receiving the blade slot and the headed portions of the studs overlying the metal of the blade along the slot when the blade is in shavin position respecting the second named mem er. v

12. A safety razor as set forth in claim 11 in which the secondnamed member is provided with a bar to enter the slot of the blade.

13. A safety razor as set forthin claim il. in which the said member is provided with a lug to engage an end portion of the blade.

14. A safety razor as set forth in claim 11 in which the saidmember is provided with a lughaving a reduced portion and the blade has a recess at its ends to receive said lug.

IRVING s. BODKIN,