US1739280A

US1739280A - Razor and blade therefor

Info

Publication number: US1739280A
Application number: US336991A
Authority: US
Inventors: Marcus B Behrman
Original assignee: American Safety Razor Corp
Current assignee: American Safety Razor Corp
Priority date: 1929-02-02
Filing date: 1929-02-02
Publication date: 1929-12-10
Anticipated expiration: 1946-12-10
Also published as: DE557490C; GB347692A; GB338419A; FR688134A; BE367344A; NL31956C

Description

Dec. 10, 1929. M. B. BEHRMAN RAZOR AND BLADE THEREFOR Filed Feb. 2, 1929 INVENTOR A NEY patented Dec. 10, 1929 UNITED .STATES PATENT OFFICE MARCUS B. BEHRMAN, OF BROOKLYN, NEW YORK, ASSIGNOR TO AMERICAN SAFETY RAZOR CORPORATION, OF BROOKLYN, NEW YORK, A CORPORATION OF VIRGINIA RAZOR AND BLADE THEREFOR Application filed February 2, 1929. Serial No. 336,991.

My present invention relates to safety razors of the type wherein the blade is pressed against fixed. stops with its shaving edge always in the same predetermined position with respect to the razor guard. This insures a proper shaving action notwithstanding expected-dimensional variations in blades employed.

The invention aims primarily to provide a razor blade having special features of construction by the use of which the above mentioned adjustment of the blade with reference to the stops may be carried out with greater effectiveness and certainty, certain additional features of construction being preferably employed in the blade to insure that during assembly it will bepreliminarily positioned within the proper range of action of the mechanism employed to press it against the stops.

The inventionalso includes a novel blade holder adapted to cooperate with a blade of the nature above referred to, to press the blade against the stops as aforesaid.-

For the attainment of the foregoing objects and such other objects as may hereinafter appear or be pointed out, I have illustrated embodiments of my invention in the accompanying drawings, in which Fig. 1 is a side elevational view of my invention embodied in a type of razor somewhat like that illustrated in Patent N 0. 1,091,436; 1

Fig. 2 is a top plan view of Fig. 1, with parts broken away;

F Fig. 3 is a section taken on line 33 of ig. 2' Fig. is a bottom elevational view of Fig. 1, looking upward; v d

Fig.- 5 shows the blade employed in the embodiment of Fi 1;

Fig. 6. is a modified form of blade embodyin my invention.

ne form'of blade constructed in accordance with the invention is disclosed in Fig. 5

of the drawings, such blade having a shaving edge and being provided on its rear ed e, if desired, with a cover 22. Tar-enable t e blade to be effectively re'ssed against stops of the nature above're erred to, I will provide it with cut-away portions and 26, located adjacent its opposite side or end edges and rearwardly of its shaving edge, these cut-away portions thereby prcsentin abutment shoulders 23 and 24 between t e cutaway portions and the shaving edge 20, which may be engaged by properly cooperating movable parts on a blade holder, to press the blade cutting edge against the stops on the holder as aforesaid.

Although the shoulders 23 and 24 afford widely spaced and symmetrical points or portions to which force may be applied to the blade in adjusting it as aforesaid, and thereby tend to insure accurate -adjustment, I prefor also to provide the blade with an opening 27 located preferably centrally between the cut-away portions 25 and 26, this opening 27 running transverse to the cutting edge 20 of the blade and usually at right angles thereto, in such manner as to provide elongated linear side walls 27 which may receive a projection in the blade holder and thereby confine the blade to the desired range of position and movement with respect to the blade holder. The end wall 27 of opening 27 serves to limit the rearward position or movement of the blade with respect to the stops to be engaged by it, while the side walls 27 of opening 27 confine the blade preliminarily to a position substantially parallel to its final adjusted position, and also may guide the blade toward such final position during its adjustment.

The above features of construction, however, still permit the blade to be used in certain previously known types of razor holders, for example, as described in United States Patents Nos. 1,091,436 and 1,135,775,

if desired.

In Figures 1 to 4,I have illustrated one form of blade holder ada ted to be used in connection with a blade 0 the above nature, such holder being member 10carrying a saddle or blade seat 11, having guard teeth 12 at its front .end

provided with a handle and fixed stops 13 as above referred to adapted to define a line to which the shaving edge 20' of the razor blade is to ahe brought for the purposes of maximum efiieiency and shaving smoothness. A cover member 15 is pivoted to the seat at the rear 16 so as to permit it being swung from the full line position of Fig. 1, which is the position of blade engagement, to dotted line position in that figure, which i'sthe position of blade release.

The cover 15 is maintained either in one or the other of these positions b means of the spring 17 (see Fig. 4 secure to the saddle, in any preferred or esired manner, having free ends 18.which engage the toe portions 19 on o posite sides of the cover and to the rear of t e pivot 16. The lips 18 of the spring and the toe portions 19 of the cover are of such a character that the springserves as a double acting one, forcing the cover to closed position when the .cover 1s on one side of the critical angle and forcin it to open position when on the other side 0 this critical angle.

In accordance with the embodiment of the invention herein disclosed, the means on the cover for maintainin the blade, with its shaving edge against t e front stops and for advancing the blade along the seat, when it is not already so engaged, are in the form of members 30 which, in the illustrated embodiment, comprise spring elements bent in'the shape of a V and each secured at the free end of one leg 31 to the cover and having the end of the other leg 32 free, this last-mentioned leg serving as the active advancing element. The cover is provided with two such spring members, one on each side, and positioned well to the front of the cover ivot and intermediate of the front stops an the cover pivot. I thereby obtain not only an increased leverage for the advancin means but the added advanta e that the depth of the razor can be somew at shortened as the springs have been moved from a position to the rear of the blade to a positionabove' the blade. To provide clearance for these members 30, the seat or saddle is cut away at each side as clearly shown at 29 in Fig. 3.

The distance between the abutment shoulders 23 and 24 and the shaving edge 20 is such that when the blade is initially seated on the razor these abutment shoulders 23 and 24 will each be engaged by a leg 32 of the sprin member 30 as the cover is brought into 0 amping position, to advance the blade along its seat to'bring the shaving edge 20 into engagement with the front sto s 13 and therefore into that line which has een predetermined as the line of maximum shavin efiiciency, where it is not already so engage and to maintain such engagement.

By the employment in the razor of Fig. 1 of'a blade having abutment shoulders 23 and 24 positioned as set forth, and due to the manner of their cooperation with the advancing members 30 carried bythe cover, I not only secure the advantage ofthe longer leverage with a shortening of the razor but also find that the advancing motion on the bladed will generally be of a more uniform and improved character.

The razor seat or saddle 11,is provided with an upstanding rojection 40 on 1ts upper face positioned a su stantial distance to the rear of the lines connecting the front stops 13, and in the illustrated embodiment this projection takes a generally oblong form with the longer dimension extending transversely of the saddie, that is, at right angles to the line connecting the front stops 13. The opening 27 in the blade is substantially longer than the projection 40 and is of a width sufficiently larger than the width of the pro'ection 40 so as to permit of the projection eing freely received through the opening. Due to the substantiall increased length of the opening over that o the projection, it will be understood that the blade, even though it is positioned over the projection, can be shifted with reference to the projection and the blade seat in a direction to bring the shaving edge 20 toward or away from the front stops 13, and b giving this opening and these projections tlie disclosed contours and the relative dimensions as above set forth, the projection serves additionally to limit the blade to a substantially rectilinear movement andto guide it in such movement. The size of the opening 27 is preferably such w'th reference to the projection 40 and partic larly the length of the opening with reference to the length of the projection that wh n the blade has been seated with the proj ction received through the opening 27 thereof, the bladeedge 20 will be in proximity to the line connecting the front stops 13""and therefore in proximity to the final position which the. shaving edge is to take. The distance of the rear wall 27 of the opening 27 inthe blade from the blade edge 20 is greater than the distance of the rear wall 40' of the projection 40 from the line connecting the

front stops

13, 13, so that at no time can the projection 40 serve to prevent the blade edge from being advanced into enga ement with the front stops. So also, the fistance of the front wall 27 from the shavin edge 20', while less than the distance of the ront'wall 43' from the aforementioned line,'is such with reference to said aforementioned distance thatin any rearwardposition of the blade, while 40 and 27 are in engagement, the rear endof the blade Wlll be prevented from striking the rear part of the cover.

The slots 25 and 26 and the opening 27 are positioned laterally of each other in the central zone of the blade, as clearlyshown in Fig. 5, the latter being positioned wholly within the perimeter of the blade although this is not essential as to certain phases of my invention. The front wall 27 of the opening is closer to the edge of the blade than are the abutment shoulders 23 and 24 presented by the slots 25 and 26. As a result of this arrangement, the shoulder 27 serves not only to limit the initial position of the blade rearwardly of the razor saddle or seat, but makes this limiting position such as to always present the abutments 23 and 24 in a positional relation with reference to the spring members 30 on the cover, so as to permit of the proper coaction between the cover and the abutments 23 and 24.

The side walls 40*, which along with the rear wall 40 and the front wall 40 define the oblong character of the projection 40 'serve to guide the blade in its forward and rearward movement b their coaction with the side walls 27 which define the oblong character of the openin 27 in the blades.

While I have describe the

elements

27 and 40 both as to their relative contours, dimensions and positional relationship to each other and to the razor parts because of the added function and utility which result from such detail arrangement, it will be understood that such details of construction, while advantageous, are not essential to the border phases of my invention in this respect, and that therefore my invention is not to be considered as limited to such features unless such details are specifically called for in the claims. One of those broader phases, for exam le, is the positioning of a portion of the bla e between the projection 40 and the front stops 13, so as to bring the abutment shoulders 23 and 24 into proper cooperative relation to the members 30.

My invention permits of the employment with razors of the general type herein disclosed, charact rized as herein set forth, of a double edged blade without in any way requiring any changes exceptin dimensions of the parts, for example as shown in Fig. 6 of the drawings. The blade 221 is provided with

cutting edges

220 and 222 at opposite ends and symmetrically of the longest dimension of the blade, i. e., the dimension from side to side, there are portions cut away to provide slots 225 and 226 defined in art by the two pairs of'oppositely

positiones abutment shoulders

223 and 224. There are thus provided two sets of abutment shoulders to cooperate alternatively with the depending members on the cover, for example springs 32, so that when one shaving edge, for example the shavin edge 222, is the active one, the abutment s oulders 223 will be in cooperative relationshi to the aforementioned s rings 32 and when t e razor blade is reverse so as to bring the other ed e 220 into active osition, the abutment shoulders 224 will be t e active shoulders for the same pur ose. By arran ing these

shoulders

223 and 224 so that eac pair are in alignment and at the same distance from its adjacent cutting edge, as the other pair is from its adjacent cutting edge, the

lads can be reversed not only to bring the other cutting edge into active position, but

can be reversed from side to side so as to reverse the face of the blade. The advancing spring members shown in Fig. 3, for example, can be of a character to accommodate the allsymmetrical arrangement of the slots 225 of the blade of Fig. 6 because of the inherently flexible character of the leg 32 thereof or by a slight change in their position on the cover can be made to do so. The inactive cutting edge of the blade of Fig. 6 will be prevented from contacting with any portion ,of the cover on its rearward movement away from the front stops by the limiting action of the projection 40 or 140, as the case may be, as already aforementioned, and this inactive rear edge of the blade will be protected against accidental contact by the skirt 15 projectingrdownwardly from the cover at its rear (see ig. 1).

I have herein disclosed my invention as embodied in varying constructions, and have described these constructions in detail. Such detailed description, or any part thereof, is not to be construed in a limitative sense unless called for by the language of the claims or the logical interpretation to be given to such language.

' Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent is 1. In combination, a razor holder having a guard and fixed stops adjacent the ends of the guard adapted to fix the position of the shaving edge of a blade w1th reference to the guard when such a blade is pressed against the stops, a razor blade having cutaway ortions'therein disposed rearwardly of its s aving edge and presenting abutment shoulders in the blade between said port-ions and said sto s, said holder being provided with a movable portion having means fixed thereto to be received within said cut-away portions to en age said shoulders to press the edge of the lade against said stops.

2. In combination, a razor holder having a guard end fixed stops ad'acent the ends of the guard adapted to fix t e position of the shaving edge of a blade with reference to the guard when such a blade is pressed against the sto s, a razor blade having cut-away portions t erein disposed rearwardly of its shaving ed e in the blade between said portions and said stops, said holder having means to be received within said cut-away portions to enage said shoulders to press the edge of the filade against said stops, said blade having an opening therein disposed between sai cut-away portions and running transverse to its shaving edge, and said holder having a projection adapted to be received within said opening to preliminarily position the blade with respect to said means, but having such clearance in a direction transverse to theshavingedgethattbeedgeoftheblade and presenting abutment shoulders will engage said stops before the projection engages an end of said opening, said opening having side walls confining the blade in its movement to a path of travel toward the stops.

3. In a device of the character described, in combination, a razor comprising a saddle having a guard for the shaving edge and a member projecting upwardly from the saddle for initially locating the blade and front stops to define the final position of the shaving edge, and a cover pivoted thereto having blade advancing members depending downwardly along opposite sides thereof, said advancing members having engaging portions on the forward portion thereof and a blade cut away so as to provide an opening to receive freely the u wardly projecting locating member, and a utment shoulders positioned adjacent its opposite side edges at such a distance from the shaving edge that when the blade is seated on the saddle with the upwardly projecting member received in the aforementioned opening, the blade will be preliminarily located with its shaving edge in proximity to the line connecting the front stops and in proper position for advancement thereagainst, and the side abutments will be positioned as to be engaged by said engaging portions of the depending blade advancing members, and advanced thereby relatively to the saddle and to the upwardly projecting locating member, as the cover is brought down to blade clamping position.

4. In combination, a razor holder having a guard and fixed stops adjacent the ends of the guard adapted to fix the position of the shaving edge of a blade with reference to the guard when such a blade is pressed against the stops. a razor blade having cutaway portions therein disposed rearwardly of its shaving edge and presenting abutment shoulders in the blade between said portions and said stops, said blade also having an opening between said cut-away portions, and said holder having adjustable means adapted to be received Within said cut-away portions to engage said shoulders to press the edge of the blade against said stops, said holder also having a projection adapted to be received in said opening to preliminarily position the blade with respect to said adjustable means.

5. A safety razor blade having a shaving edge provided with stop engageable corner portions and cutawav portions in the central zone of the blade and in the opposite sides thereof, said cutaway portions presenting abutment shoulders therebetween and said shaving edge, said blade also having an opening between said cut-away portions with elongated linear side walls running transverse to said shaving edge to guide said stop engageable corner portions to their final predetermined stopping positipn. v

6. A safety razor blade having ashavmg edge provided with stop engageable corner portions and cut-away portions adjacent opposite side edges which are spaced in a rearward direction from the shaving edge and present abutment shoulders between said portions and said shaving edge, said bladealsg having an opening between said cut-away portions which is elongated in a direction transverse to said shaving edge so as to extend closer to the shaving edge than said abutment shoulders, said cutaway portions and said 0 enin being located in the central zone of the blade.

7. A double edged safety razor blade hav- I ing substantially parallel front and rear shaving edges provided with stop engageable corner portion, and cut-away portions adjacent opposite side edges which present abutment shoulders respectively spaced substantially equally from said front and rear edges, said blade also having an opening disposed substantially centrally between said cut-away portions, said opening being elongated in a direction transverse to said first mentioned edges and having end walls spaced substantially equally from the respective adjacent front and rear edges.

8. A double edged safety razor blade having substantially arallel front and rear shaving edges provided with stop engageable corner portions, and cut-away portions adjacent opposite side edges which present abutment shoulders respectively spaced substantially equally from said front and rear edges, said blade also having an opening disposed substantially centrally between said cutaway portions, said opening being elongated in a direction transverse to said first mentioned edges and having end walls spaced substantially equally from the respective adjacent front and rear edges, and elongated linear walls to serve for blade guiding purposes.

9. A razor blade comprising shaving edges along opposite edges provided with stop engageable corner portions, the active edge being adapted to contact with a front gauge on a razor, a plurality of sets of abutment portions each set being arranged abreast, intermediate the opposed shaving edges and each set at the same distance from its adjacent shaving edge and adapted to be engaged and forwardly pressed toward said front gauge when its adjacent shaving edge is the active one and an intermediate positioning slot adapted to position the blade forsaid forward movement, regardless of which edge is the active one, said slot extending closer to the opposed shaving edges than said abutment.

10. A razor blade comprising a shaving edge having stop engaging corners adapted to contact with front gauge stops of a razor, a plurality of abutment portions arranged abreast in the central zone of the blade and to bring said stop engaging corners against said front gauge stops and an intermediate positioning slot adapted to position the blade for said forward movement.

11. A razor blade comprising a shavin edge having stop engaging corners adapted to contact with front gauge stops of a razor, a plurality of slots directed inwardly from the sides and arranged abreast in the central zone of the blade and presenting abutment portions ada ted to be engaged and forward- 1y pressed toliring said stop engaging corners against said front gauge stops and anintermediate positioning slot arranged in laterally overlapping relation with reference to the aforementioned positioning slots and adapted to positionv the blade forsaid forward movement.

12. A razor blade adapted for use with blade supporting and clamping members, said blade embodying a shaving edge along one side and a plurality of abutment portions positioned across the blade and laterally of each other in the central zone of the blade, the intermediate abutment portion serving to locate the blade on its seat in proximity to the front stops and the abutment portions to each side thereof in position to cooperate with blade advancing means associated with said members, said intermediate abutment portion being positioned in closer proximity to the shaving edge of the blade than the other aforementioned abutment portions.

In witness whereof I have signed this specification this 1st day of February, 1929.

MARCUS B. BEHRMAN.

DISCLAIMER 1,739,280.Marcus B. Behrman, Brooklyn, N. Y. RAZOR AND BLADE THEREFOR. Patent dated December 10, 1929. Disclaimer filed June 21, 1934, by the assignee, American Safety Razor Corporation.

Hereby enters this disclaimer to the

subject matter constituting'claims

5, 10, 11, and 12 of said patent which read as follows:

5. A safety razor blade having a shaving edge provided with stop engageable corner portions and cutaway portions in the central zone of the blade and in the opposite sides thereof, said cutaway portions presenting abutment shoulders therebetween and said shaving edge, said blade also having an opening between said cutaway portions with elongated linear side walls running transverse to said shaving edge to guide said stop engageable corner portions to their final predetermined stopping position.

10. A razor blade comprising a shaving edge having stop engaging corners adapted to contact with front auge stops of a razor, a plurality of abutment portions arranged abreast in the centra zone of the blade and adapted to be engaged and forwardly pressed to bring said stop engaging corners against said front gauge stops and an intermediate positioning slot adapted to position the blade for said forward movement.

11. A razor blade comprising a shaving edge having stop engaging corners adapted to contact with front gauge stops of a razor, a plurality of slots directed inwardly from the sides and arranged abreast in the central zone of the blade and presenting abutment portions adapted to be engaged and forwardly pressed to bring said stop engaging corners against said front gauge stops and an intermediate positioning slot arranged in laterally overlapping relation with reference to the aforementioned positioning slots and ada ted to position the blade for said forward movement.

12. A razor blade a apted for use with blade supporting and clamping members, said blade embodying a shaving edge along one side and a plurality of abutment portions positioned across the blade and laterally'of each other in the central zone of the blade, the intermediate abutment portion serving to locate the blade on its seat in proximity to the front stops and the abutment portions to. each side thereof in osltion to cooperate with blade advancing means associated with said members, said intermediate abutment portion being positioned in closer proximity to the shaving edge of the blade than the other aforementioned abutment portions.

[Ofiicial Gazette August 14, 1.934.]