US947209A

US947209A - Safety-razor.

Info

Publication number: US947209A
Application number: US48159209A
Authority: US
Inventors: John H Woods
Original assignee: GEORGE B MCCARTY; HERBERT W GREENE
Current assignee: HERBERT W GREENE; GEORGE B MCCARTY
Priority date: 1909-03-06
Filing date: 1909-03-06
Publication date: 1910-01-18
Anticipated expiration: 1927-01-18

Description

J. H. WOODS.

SAFETY RAZOR.

APPLICATION FILED umm, 1909.

Patented Jan. 18, 1910.

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(qu ue Mloc 331g@ HNHMAS To all whom it may UNITED STATES PATENT OFFICE.

JOHN' H. WOUDS, 0F NEW YORK, N'. Y., ASSIGNUR T0 GEORGE B. MQCARTY. l0F RED BANK, NEW JERSEY, AND HERBERT W. GREENE, 0F 'YONKEB.S, NEW YORK.

SAFETY RAZOR Specincation of Letters Patent.

Patented Jan. 18, 1910.

concern:

Be it known that I, JOHN H. VVooDs, a citizen of the United States, residing at the city of New York, in the borough of Queens and State of New York, have invented certain new and useful Improvements in Safety-Razors, of which the following is a full, clear, and exact description.

My invention relates to safety razors.

The principal object is to ro vide a simple and ulck clamping means fbr engaging the guar on the razor blade, whereby t e latter 1s held against its support with its cutting edges properly exposed adjacent to the sides of the guard.

nIn a safety razor, the most important requisites are first, proper positioning and clamping of the razor blade in use, and second, easy removal and replacement of the blade. The latter requisite must, however, not be had at the expense of the former. In other words; the features which make the blade easily removable should not be of such a character as to sacrifice security in the clampingl of the blade while shaving.

It is t e purpose of my invention to provide a structure satisfying the foregoing. needs or requisites, attaining a riarticularly accurate and easy positioning of the blade, and security in the clam ing action, with a minimum amount of di culty and. manipulation on the part of the operator.

With the foregoing objects in View, the invention consists in the features of con struction and combination as hereinafter set forth and claimed.

In the drawings: Figure 1 is a front view lof a safety razor embodying the principles of my invention; Fig. 2 is a section on the line II--II of Fig. l; F ig. 3 is a side view; Fig. 4 is a vertical sectional view; Fig. 5 is a view similar to Fig. l showing the guard drawn away from the support to release the razor blade; Fig. 6 is a section on the line VI-VI of Fig. 5; Fi 7 is a perspective view of the razor bla e; Fig. 8 is a view similar to Fi 5 showing a slightly modified constructlon, and Fig. 9 is a section on the line IX-IX of Fig.. 8.

Referrin to the drawings in which like parts are esignated by the same reference sign, 1 denotes a frame having a bail shaped portion 2` consitutin a sup ort for the razor blade. The bac or ma n portion l. of the frame 1 is stiiily made to constitute a yoke having an cnlar ement 3 at its center wlth a transversely dri led hole or perforation 4 to constitute a pivotal joint for the handle.

5 designates a handle formed with a knurled portion to be easily grasped by the hand, and having a forked upper extremity 6, the two sides or prongs of which embrace the enlarged middle portion 3 of the yoke 1. In this location the handle 5 is pivoted t0 swing laterally by a pin 7 passed through the prongs 6 and through the hole 4.

9 denotes a guard with the usual toothed or rake shaped sides. At the ends this guard has a pair of oppositely located notches or recesses 10 which serve to guide the guard upon the side portions 2 of the bail 2. The handle 5 is made to slide diagonally against and crowd the underside of the guard 9 so as to impel said guard'to approach and recede from the sup ort 2 when the handle is swung respectively into and out of its central position shown in Fi 1. The foregoing functions are best attained by making the prongs 6 V-shaped in side elevation, thereby fo.m ing the centrally located points or'edges 6 which directly impinge against the guard in une. The side faces 6 of the V-shaped prongs 6 make such an angle with one another as to move into substantial coincidence with the lane 14 of the upper side of the yoke 1 w en the handle is swung laterally m either direction. In this wa a maximum movement of the guard is o tained by a minimum swinging movement of the handle.

The razor blade 15 may be of any desired construction adapted to be clamped between theguard t) and the su port 2. I prefer to have a blade of such a. ingth as to tit nicely between the side portions 2 of the bail support. 2. At a central point of the ends of the razor blade, notches 16 are provided which cooperate with certain parts having an imortant function inl properly centering and coating the blade during the clamping action. As best shown in Figs. 1, 2 and 6, I provide the guard 9 with rotuberances at points corresponding to t e locations of notches 16 of the razor blade. These rotuberances are not only desi ned'to fix tie position of the blade proper y when clamped, but are also designed to facilitate the insertion of the blade, automatically4 locating the latter in the proper position to be clamped without any particular care on the part oi the operator. This result is best attained by making the protuberances 17 V-shaped in both horizontal and vertical section. In other words, each protuberance 17, has somewhat the form of a pyramid with one vertical side face and two equal inclined faces, which may be slightly convex or rounded as shown. A protuberance of this shape has the eiiect of automatically centering the notches 1G of the razor blade, so that the latter drops centrally into its place without the exercise of any particular care or attention on the part of the operator. 18 denotes recesses in the support 2 which receive the protuberaiices 17 during the clamping action. In Figs. 8 and 9, small pointed pins or teats 2O are fixed on the underside of the support 2 and enter corresponding recesses 21 in the guard. In this case the razor blade is perforated on the lines of the pins 20.

The use and operation will be obvious from the foregoing description. The handle 5 is first swung to one side or the other so that the centrally projecting edges 6 of the prongs 6, are moved to one side as shown in Fig. 5 or Fig. 8. This permits the guard 9 to fall away from the support 2 by gravity, and the guard recedes through its maximum distance until it rests upn the yoke 1. A comparatively wide gap is now presented in which the razor blade may be placed. The notches 1G of the razor blade are, of course, very readily received on the upper pointed parts of the protuberances 17 under these circumstances, and when the blade is allowed to drop onto the guard by gravity, it automatically centers itself both in longitudinal and lateral directions on account of the double V-shaped character of these protuberances. The handle 5 is next pushed back into lace, to slide diagonally against and crowcf) the guard forcibly toward the support 2 and clamping the razor blade roperly and centrally located therebetween. l` he movement of the guard toward the support is impelled with all the efficiency of a toggle joint action, the nature of the crowding or pressing movement of the edge 6 against the guard being such as toact with a constantly increasing mechanical eiiciency. In its central position the handle, of course, remains in equilibr' n, but in order to make this equilibrium ble and secure, I prefer to notch the underside of the guard 9 at `24 so as to receive the edge 6 of the prongs 6 in this position. This notch ives a sort of locking action to restrain the andle against lateral displacement, but is not deep enough to restrain such lateral movevment when any intentional clamping or unclam ing manipulation is required. With the orm of the invention shown in Figs. 8 and 9, the centering of the blade on the guard is done by the clamping action. The movement ofthe guard toward the support impels the razor blade into a position Where the teats 2O enter the notches 16, and as this movement is continued the conical form of the teats 20 causes them to position the blade more and more in its proper or central location, so that when the clamping finally takes place, the blade is exactly centered.

What I claim, is

1. A safety razor comprising a frame having a support, a guard mounted in said frame and adapted to approach and recede from said support, a razor blade receivable between said guard and said support, and a handle pivoted in said frame on an axis perpendicular to the cutting edges of the razor blade for sliding angularly against and crowding said guard against said support.

2. A safety razor comprising a frame having a rigid transversely extendin yoke and a portion forming a support para. lel to said yoke, a guard having notches and guided thereby to approach and recede from said support, a razor blade, and a handle pivoted to said yoke on an axis perpendicular to the cutting edges of said razor blade for sliding diagonally against and crowding said guard toward said support and locking said blade when the handle is centrally located.

3. A safety razor comprising a frame having a yoke and a portion constituting a support, a guard mounted in said frame to approach said support, guidingmeans therefor and a handle pivoted to said yoke and having a V-shaped portion engagin said uard to slide diagonally against an crow and lock the same against said sup ort when the handle is centrally positione 4. A safety razor comprising a frame having a yoke and a portion constituting a support, a guard mounted in said frame to approach said support, guiding means therefor, a handle pivoted to said yoke and having a V-shaped portion engaging said guard to slide diagonally against and crowd and lock the same against said support when the handle is centrally positioned, said ard having a notch to receive the ointe portion of said handle in said lockin relation.

5. A safety razor comprising a rame having a yoke with a portion constituting a support, a guard guided by the sides of said frame to approach said support, and a handle having a forked ortion to embrace said yoke and pivoted t ereto, the forked extremities of said handle being formed to engage said guard to impe] the same toward said support when the handle is centrally positioned.

6. A safety razor comprising a frame having a yoke with a portion constituting a sup-` port, a guard guided \by the sides of said frame to approach Said support, and a handle havin a forked portion to embrace said yoke an pivoted thereto, the forked extremities of said handle being formed to engage said guard and impel the same toward said support when the handle is centrally positioned, said guard having a notch to receive said forked extremities of the handle when the latter is centrally positioned.

7. A safety razor comprising a frame having a portion constituting a razor blade support, a guard mounted to move to and from said support, a razor blade adapted to be clamped between said guard and said support, means for guiding said blade into a centrally located position on said guard, and a handle pivoted to said frame and adapted to slide diagonally against and crowd said guard to clamp said blade against said suport.

p 8. A safety razor comprising a frame having a portion constituting a razor blade support, a guard mounted to approach and recede from said support, a razor blade having recesses, a handle ivoted to said frame and adapted to slide diagonally against and crowd said guard against said support, and means cooperating with said recesses to center the blade.

9. A safety razor comprising a frame having a portion constituting a razor blade support, a guard mounted to approach and recede from said support, said support having tapering protuberances thereon, a razor blade having recesses ada ted to fit said protuberances, and a hand e ivoted to said frame and adapted to s ide diagonally against and crowd said guard against said support.

10A safety razor comprising a frame member in the form of an elongated loop, a handle pivoted between the ends of the loop, a guard member, a razor blade positioned on said guard member, and means whereby the pivoted handle will clamp the guard member, and with it the blade, against the frame member within the loop.

11. A safety razor com rising a frame member having downward y and inwardly extending side arms, a handle pivoted between the ends of the side arms, a guard member, a razor blade positioned on said guard member, and coperating means on the end of the handle and lower face of the guard member whereby the blade is clamped etwee'n the frame member and guard mem- Ver.

l2. A safety razor comprising a frame member having downwardly extended side arms and members extending inwardly therefrom, a handle pivoted between said inwardly extending members, a guard member, a razor blade positioned on said guard member, and means whereby the guard member approaches the frame member as the handle assumes a position normal to the' frame member, and recedes from the frame member as the handle is brought from its normal position.

In witness whereof, I subscribe my signature, in the presence of two witnesses.

JNO. H. VOODS.

Witnesses:

WALDO M. CHAPIN, WILLIAM LARY.