US1907783A

US1907783A - Safety razor

Info

Publication number: US1907783A
Application number: US422754A
Authority: US
Inventors: Henry J Gaisman
Original assignee: Gillette Safety Razor Co
Current assignee: Gillette Co LLC
Priority date: 1927-03-12
Filing date: 1930-01-23
Publication date: 1933-05-09
Anticipated expiration: 1950-05-09

Description

y 9, 1933. I H. J. GAISMAN 1,907,783

SAFETY RAZOR Original Filed March 12 1927 2 Sheets-Sheet 1 H M210 BY ATTORNEY y 9, 1933. H. J. GAISMAN 1,907,783

SAFETY RAZOR Original Filed March 12. 1927 2 Sheets-Sheet 2 INVENTOR ATTORNEY Patented May 9, 1933 UNITED STATES PATENT OFFICE HENRY J'. GAISMAN, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO GILLETTE SAFETY RAZOR COMPANY, OF BOSTON, MASSACHUSETTTS, A CORPO RATION OF DELAWARE SAFETY RAZOR Original application filed March 12, 1927, Serial No.

174,790. Divided and this application filed January 23, 1930. Serial No. 422,754.

This application is a division of my application Serial N 0. 174,790 filed March 12, 1927, for Safety razors.

An object of my invention is to provide means to prevent the use in a safety razor of a blade not manufactured by or under the authority of the manufacturer of the safety razor.

I have illustrated my invention in connection with a safety razor in which the blades are provided with apertures, one of the objects of my invention being to provide the blades and the razor with cooperative means to permit proper positioning of the blade in .15 the razor for shaving and to prevent an unauthorized blade not equipped with my improvement from being used in the razor.

In carrying out my invention I provide a blade having apertures or impressions in a backing on the blade or directly in the blade, which apertures or impressions may be in the form of a designation to indicate the manufacturer of the blade such as a trade-mark, a word or symbol which apertures or impressions are adapted to cooperate with complemental projections in or on the razor so re lated that the blade will be retained in shaving relation to the razor guard, and whereby if a blade not provided with such apertures or impressions be inserted in the razor it can not be retained therein or thereon in shaving relation to the guard.

In the form of my invention illustrated in the accompanying drawings I provide a blade holder comprising a base or frame having a guard and a blade retaining member or cover pivotally carried thereby adapted to receive therebetween a blade having apertures, and 40 means upon the holder cooperative with the apertures to retain the blade in shaving relation to the guard when the retaining member or cover is in blade-retaining position and to prevent the retaining of a blade that is not provided with a proper aperture.

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

Reference is to be had tothe accompanying drawings forming a part hereof, wherein Fig. 1 is a section view of a safety razor embodying my invention, showing the retaining member or cover in open position; Fig. 1a is a side view of the razor in shaving position; Fig. 2 is a plan view of Fig. 1, partly in section; Fig- 3 is a section substantially on the plane of

line

3, 3 in Fig. 1; Fig. 4 is a sectional detail showing the razor in shaving position; Fig. 5 is a side view of a modified form of the razor; Fig. 6 is a sectional detail of the razor shown in Fig. 5, showing the parts in shaving position; Fig. 7 is a section substantially on the

line

7, 7 in Fig. 6; Fig. 8 is a partly broken face view of a blade; Fig. 9 is a face view of a blank for a bladebacking, and Fig. 10 is a face view illustrating a blade having the apertures formed directly therein. Fig. 11 is a partly sectional side elevation of the modification shown in Fig. 5; Fig. 12 is a partly sectional side elevation of the razor, in the closed position, corresponding to Fig. 6; Fig. 13 is a fraginentary detail view, and Fig. 14 is a detail perspective View.

Similar numerals or references indicate corresponding parts in the several views.

The razor illustrated includes a. blade holder comprising a frame or base 1 provided with a guard 2 and a blade retainer or cover 3 pivotally carried by the frame; The retainer or cover member 3 is shown pivotally supported adjacent to the rear frame or base 1, for which purpose the latter is shown pro- K vided with pivots 1" on opposite s'des, which may be stamped from the metal 0 the frame and webs 3a of the retainer are provided clamped upon the rear or heel portion of the blade along opposite sides thereof in a well known way in safety razor blades. The blade or its backing 4a is provided with openings, apertures or impressions, indicated at 4b, which openings or the like may be provided in the form of a designation, such as a trade-mark, name, symbol or the like. In the blank for the backing illustrated in Fig. 9 the openings or apertures 41) are so located as to be upon opposite sides of the blade, as illustrated in Fig. 8, so as to readily appear in any flatwise position of the blade. The openings, apertures or designations 4?) may be {armed directly in the blade, as shown in Fig.

A handle 14 may be attached to the frame or holder 1- in any desired way. The blade holder portion of the razor is provided with one or more projections, indicated at 7, adapted to enter a properly arranged or corresponding aperture or designation 4b of the blade or its backing 4a, the projections being in such a position as to retain the blade with its cutting edge-in shaving relation to the guard when the cover or retainer member 3 is closed over the blade. There may be-any desired number of projections 7 and any number of corresponding apertures or impressions 4b in the blade or its backing. Stops 2a, in some of the figures, are provided upon the guard in spaced relation near the corners of the cutting edge of the blade to be engaged thereby. The openings or cut-away portions 4b of the blade present abutment shoulders at 4', between the cut-away portions and the shaving edge 4", which may be engaged by the associate projection 7 to present or press the cutting edge of the blade in shaving relation to the guard, and against the stops 2a when they are present on the guard. A blade rest or slide member 8 carries the projections 7 and is shown connected with or supported by spring arms 8a attached to the blade holder frame at 10. Projections 7 are thus supported in position to receive the openings or apertures 4b of the blade. The rest 8 and the projections 7 are movable toward and from the guard and are controlled by the cover member or retainer 3, whereby the blade may TOVG relatively to the guard. In Figs. 1 to 4 tne arms 81; have a spring tendency normally pressing the rest 8 and the projections 7 rearwardly or in a directionaway from the guard, the spring arms 8a being shown operable in slots 9 in frame or basel. The rest 8 is shown provided with laterally extending lugs 8' located in oppositionto the curved or camlike edges 3 of the webs 3a of the cover or retainer member 3. The relation of the parts in such that when the cover member or retainer is swung back from the blade the spring arms 8w will cause the rest 8 and the projection or projections 7 thereon-to move rearwardly respecting theguai-d because the cam-like edge 3 moves with member 3 relatively to the lugs 8', and when the cover member or retainer is swung down over the blade the cam-like edges 3' acting against the lugs 8' will force the rest 8 forwardly, and the projections 7 will enga e the shoulders or abutments 4' and push t e blade so that the cutting edge of the blade will be pushed forwardly in shaving relation to the uard. The engagement of the .free edge 0 the cover member or retainer upon the adjacent edge portion of the blade in conjunction with t e projection 7 will keep the blade in shaving relation to the guard, as indicated in Fig. 4, since the rearward pressure of the spring arms 8a respecting the rest 8 tends to keep its projection 8 against the cam portions 3' of the webs 3a of the cover or retainer. If a blade or its backing that is not provided with openings or designations 4a be applied in the blade holder it will not be retained in shaving position because it requires the cooperation of the projections 7 in the openings or apertures 4b and the retainer upon the blade to retain a blade in shaving position. Spring arms 15 secured upon frame 1 are located in position to engage edge portions 3 of the webs 3a of the cover or retainer to keep the latter open, (Fi 1), and to engage the edge portions 3 0 said webs to keep the retainer closed upon the blade, (Fig. 4). In the form shown in Figs. 5, 6 and 7 the spring arms 8a tend to force the rest 8 with its pro ections 7 in the direction of the guard so that if a blade having the openings or apertures 4b therein or in its bac ing be placed upon the rest 8 with the projections in the. appropriate openings or apertures the said projections will engage the shoulders or abutments 4 and the spring arms will move the projections 7 toa ward the guard and thus cause the blade to be pushed in shaving relation to the guard and against the stops 2a, to retain the cutting edge of the blade in shaving relation to the guard. The retainer or cover member is pivotally supported by the pivots 1" entering the holes 6' in the webs 3a and the cam-like edge portions 36 of the webs 3a are adapted to cooperate with the spring arms 8m to position the latter rearwardly when the cover or retainer memberis opened, (Fig. 5;, to cause the'rest 8, projections 7 and the b ade to be moved rearwardly with respect to the guard. When the cover member or retainer 3 'is moved to position over the blade the edges 3b advance toward the guard to permit the spring arms 8a to correspondingly move the rest and projection 7 toward the guard and bearin against the webs 3a of the retainer.

The e ges 3c of the webs 3a engage the ends of the spring 16, whereby the cover or retainer member 3 is held bearing against the blade, as indicated in Fig. 6, and the extended portions of the edges 31) of the webs 3a engage said spring to keep the retainer or cover member open, as indicated in Fig. 5.

It will be understood that the cover or retainer member 3 controls the position of the blade that is provided with an opening or aperture to receive a projection 7 when the said member is closed over the blade. In either of the forms shown, the cover member either acts through the operation of projection 7 to push the blade to shaving position when the cover is being closed as in Figs. 1 to 4, or the cover member permits the spring arms 8a to push the blade to shaving position when the cover member is being closed over the blade in the form shown in Figs. 5 to 7. If a blade not being provided with openings or apertures 46 be placed in the blade holder it will not be retained in shaving position because the projections 7 will not cooperate with the blade to retain the latter with this cutting edge in shaving position or with said edge against the stops 2a.

In accordance with my invention a manufacturer of the razor and the blades provided with openings or designations, such as 4b, to receive the projections of the blade holder, will be assured that blades-not provided with such openings or designations manufactured by an unauthorized manufacturer will not fit or be retained in a blade holder.

I use the term aperture or opening herein to include such an element in or on blade as will cooperate with the projection 7 for the purposes specified hereinabove.

Having now described my invention what I claim is 1. A safety razor comprising a frame having a guard, a rest movable with respect to the guard and provided with a projection to cooperate with an opening in the blade, spring means normally tending to move the rest away from the guard, a member movably car ried by the frame, and means cooperative be tween said member and-the rest for moving the latter toward the guard when the said member is being closed and to retain a blade in shaving relation to the guard.

2. A safety razor as set forth in claim 1 in which the means cooperative between the member and the rest includes cam-like portions on the member cooperative with the rest for moving the latter toward the guard and permitting the spring means to move the rest in a direction away from the guard when the member is opened.

3. A safety razor including a holder hav ing a guard, a blade in said holder, said blade havingcut-awayportionsdisposed rearwardly of its shaving edge and presenting abutment shoulders, said holder being provided with a movable cover member, and means movable with respect to the guard and adapted to engage the abutment shoulders of the blade, said means being resiliently and movably supported on the holder, in combination with coacting camming elements on said cover and said movable means to control said movable means, whereby the shaving edge of the blade may be retained in shaving position While the cover is closed.

4. A safety razor comprising a blade holder having a guard, a blade on said holder, a movable member connected to the holder and operative over the blade, said blade having an opening and a shaving edge, movable means mounted on said holder and having a projection engaging the blade within said opening in combination with co-acting camming means on said movable member and said movable means to control the position of the blade with reference to the guard, whereby the shaving edge of the blade will be maintained in shaving relation to the guard while the movable member is in engagement with the blade.

5. A safety razor comprising a blade holder having a guard, a blade having an opening, a movable blade retaining member pivoted to said holder, camming means on said retaining member, a blade rest resiliently and movably supported on said holder and located to the rear of the guard but in substantial alignment therewith, said rest having a projection engaging the opening of the blade, said rest also having cam engaging portions in contacting engagement with the camming means of the retaining member, said guard having blade stops on the ends to engage the blade at the ends of its cutting edge.

6. A safety razor including a holder having a guard, in combination with a blade having an opening, and retaining means on said holder to retain the blade on the guard. spring supported movable means on said holder engaging the opening in the blade, in further combination with co-acting camming means on said retainer and movable means for controlling the movable blade-engaging means, said guard having blade stops engag in the blade at the ends of its shaving edge.

A safety razor, including a holder having a guard with blade stops, and a blade having an opening and a shaving edge, a blade rest resiliently mounted on said holder and normally urged toward said stops, said rest having a projection engaging the blade opening, a cap member pivotally mounted on said holder, said member having cam means engaging portions of said rest to draw said rest and blade away from said blade stops when said cap member is opened.

HENRY J. GAISMAN.