US1943414A - Safety razor - Google Patents

Description

Jan. 16, B EHRMAN 1,943,414

SAFETY RAZOR 7 Filed Nov. 16, 1928 2 Sheets-Sheet l 1 iriv m'R j ATTORNEY 1934- M. B. BEHRMAN SAFETY RAZOR Filed Nov. 16, 1928 2 Sheets-Sheet 2 INVENTOR BY Wu MEN/k; ATTORNEW/HII) Patented Jan. "16, 1934 UNITED STATES PATENT OFFHE SAFETY RAZOR Application November 16, 1928 Serial No. 319,956

8 Claims.

My present invention relates generally to razors, and has particular reference to safety razors.

It is a general object of my invention to pro-' shaving purposes.

Although I have illustrated and shall hereinafter describe my invention applied to a razor (device designed primarily for use with single- ;edged blades, nevertheless it will be understood that certain phases of my invention will have a wider applicability in connection with doubleedged blades.

It is a more particular object to provide a device whereby the initial locating of the blade in approximate position, and the subsequent advancement of the blade toward the guard edge,

are facilitated so as to render the employment and operation of the device extremely simple and efficient.

It is a feature of my invention to provide means operable upon a midportion of a blade for advancing the latter toward the guard edge. More particularly, I provide advancing means engageable with and operable upon a midportion of the blade during the closure of a blade seat cover onto an accommodated blade. In one embodiment, I provide advancing members upon the cover and I provide suitably shaped and positioned apertures upon the blade, the advancing members being adapted to enter said apertures when the cover is closed so as to advance the blade.

Another feature of my invention lies in providing means operable upon an edge portion of the blade for preliminarily locating the latter in approximately proper central and aligned position upon the seat. I prefer to provide such means in the form of projections or the like cooperable with the rear edge of the blade. Thus, in one form, I provide one or more abutments in association with the rear of the blade seat and I provide suitably shaped, spaced, and arranged recesses in the rear edge of the blade whereby the cooperation between such abutments 5 and recesses will serve to center and align the blade in approximately proper initial position.

Where the blade employed is of the singleedged variety having a reinforced rear edge, I construct the blade and the reinforcement in such a manner that a minimum amount of labor and material is entailed in providing both the medial apertures and the last-mentioned recesses.

Another feature of my invention lies in providing means operable to accomplish both the initial locating, and advancement, of the blade; 69 and more particularly, in providing such means in combination with the means for engaging with a midportion of the blade. In this way, the advancement of the blade is doubly assured while the preliminary location thereof is efficiently accomplished by a structure of maximum simplicity.

For the attainment of the foregoing objects and such other objects as may hereinafter appear or be pointed out, I have constructed several forms of my invention in the accompanying drawings in which Figure 1 is a perspective view of an assembled razor device embodying the features of my present invention;

Figure 2 is a similar view showing the cover of the razor in opened position, the blade having been removed;

Figure 3 is a perspective view of a blade de signed for employment with the device of Figures 1 and 2; 0

Figure 4 is a plan view of Figure 1 with the 8 cover partly broken away to show the blade upon the seat in advanced position;

Figure 5 is a cross-sectional view similar to Figure 7 showing the cover thrown back as in Figure 2; I Figure 6 is a cross-sectional view taken substantially along the line 66 of Figure 4;

Figure '7 is a cross-sectional view taken substantially along the line 7-7 of Figure 4;

Figure 8 is a view similar to Figure 4 showing a modification;

Figure 9 is a cross-sectional view taken substantially along the line 9-9 of Figure 8; and

Figure 10 is a view similar to Figure 8 showing a further modification.

The razor illustrated in Figures 1 and 2 is provided with the usual handle 15 upon which a blade seat 16 is mounted, the blade seat having the forward guard edge 17. Blade stops 18 are associated with the opposite ends of the guard edge 17. The rear of the blade seat 16 is provided with the laterally extending journals 19, and a cover 20 is provided with lateral cars 21 adapted to engage with the journals 19 to permit pivotal swinging of the cover around these journals as an axis. The rear portion of the cover is provided with an aperture 22 whose purpose will be presently described. The cover may also be provided with the rear extension or finger grip 23 by means of which the cover may be swung from the position of Figure 1 to that of Figure 2.

To provide for efficient mounting of the cover so that it will spring into its closed or open position, I provide laterally extending springs 24 upon the blade seat and adapted to underlie and contact the edges of the ears 21. More particularly, it will be noted that the ears 21 have substantially straight end edges. Accordingly, the upward pressure of the springs 24 will tend to keep the cover 20 closed in Figure 1 and will also tend to keep the cover 20 opened as in Figure 2. Movement between these positions will cause a mo mentary downward deflection of the springs 24.

Pivotally associated with the rear of the blade seat 16 is an angular member having the relatively short arm 25 beneath the plane of the seat and the relatively long arm 26 extending "upwardly through the opening 22 of the cover 20. This member is adapted to pivot around an axis parallel to the rear edge of the blade seat 16, this axis lying between the arms 25 and 26. An upwardly extending spring 27 is carried beneath the blade seat as shown most clearly in Figures 5-7, the upper or free edge of the spring 2'? being in engagement with the short arm 25.

When the cover is thrown back into the position of Figures 2 and 5, the forward wall of the opening 22 pushes rearwardly upon the arm 26, the arm 25 moving forwardly against the action of the spring 2'7. Thus, as seen in Figure 5, the spring 2'7 is stressed and is tending to return the angular member to its normal forward position of Figures 1, 6, and '7.

Provided on the opposite side edges of the arm 26 are the forwardly extending lugs or ears 28 adapted to cooperate with the rear edge of the blade to initially position the latter.

Mounted upon the underside of the cover 20 are the wedge-shaped resilient advancing members 29. I have shown these members formed of integral strips of spring metal suitably attached to the underside of the cover 20 and shaped to define downwardly extending Vs. The blade seat 16 is provided with openings 36 adapted to permit passage therethrough of the members 29 when the cover is closed.

In Figure 3, I have shown a blade 31 designed for use with the holder of Figures 1 and 2. It is substantially similar to the Well known singleedged type of blade, having a cutting edge 32 and areinforced rear edge 33. For the present purposes a pair of spaced apertures 34 are provided upon a midportion of the blade and arranged along a line substantially parallel to the cutting edge 32. Also the rear edge is provided with the spaced nicks or recesses 35.

The recesses 34 and 35 are so shaped and arranged that when the razor is opened into the receptive position of Figure 2, the blade may be applied to the seat 16 with the recesses 35 in engagement with the ears 28. This serves preliminarily to locate the blade in approximately central and aligned position ready for advancement. If the cover 20 is now lowered, the advancing members 29 will enter the apertures 34 and will engage with the forward walls of the latter, thereby advancing the blade bodily to abut the cutting edge 32 against the blade stops 18. In the illustrated embodiment, this advancement will be enhanced by the forward movement of the ears 28 under the action of the spring 27. The blade is thus firmly held in proper shaving position as shown in Figures 1, 4, 6, and 7.

In Figures 8 and 9, I have illustrated a modified form wherein the angular member at the rear of the blade seat is dispensed with. In this embodiment, the advance of the blade is accomplished solely by the advancing members 29 acting upon a midportion of the blade. The preliminary locating of the blade upon the seat and the consequent initial centering and alignment thereof, is accomplished by providing the two spaced upstanding abutments 36 at the rear of the blade seat 16. The blade 3'7 is provided with corresponding recesses 38 for cooperation with the abutments 36. To facilitate the manufacture of the blade 37, I space the abutments 36 by the same amount that the advancing members 29 are spaced. I am thereby enabled to provide two elongated recesses extending inwardly from the rear edge of the blade proper, these elongated recesses serving ultimately to define both the apertures 39 for the reception of the members 29 and also the recesses 38 for cooperation with the abutments 36. It will be noted that the ll-shaped reinforcement 40 is provided with recesses adapted to register with the rear portions of the elongated recesses in the blade proper so as to define the recesses 38 referred to.

In Figure 10, I have shown a modified construction wherein the two abutments 36 are supplanted by the single centrally disposed abutment 41. preferable to construct such abutment of rectangular cross-section as shown in Figure 10 so that the engagement therewith of the recess 42 provided in the rear edge of the blade 43 will serve to center and align the blade in proper in itial position.

t will thus be seen that I have provided a device of extreme simplicity, the initial positioning of a blade and the subsequent advancement thereof being efficiently assured. The initial positioning is accomplished in a manner whereby the blade may, if desired, be employed with .wellknown types of razors already on the market, So far as initial positioning is concerned, no alteration of the blade is necessary except the provision of recesses such as those shown at 35, 38, and 42. The advancement of the blade by action upon a midportion thereof serves not only to enable a distribution of the advancing force, but it also reduces the vibration of the blade due to the engagement thereof. In other words, Whereas a pressure upon the rear edge of the blade to advance the same may cause the entire blade to vibrate and possibly hum, the distributed pressure exerted by the members 29 upon a mid portion or midportions of the blade is not only more efficient from a blade-advancing stand point, but'minimizes the stress resulting in such hum.

It will be obvious that changes in the details herein described and illustrated for the purpose of explaining the nature of my invention may be made by those skilled in the art without departing from the spirit and scope of the invention as expressed in the appended claims. It is therefore intended that these details be interpreted as illustrative, and not in a limiting sense.

Having thus described my invention and illustrated its use what I claim as new and desire t secure by Letters Patent is r 1. In a razor, a blade seat provided with a guard edge and blade stops associated with the latter, a single-edged blade applicable to the seat with its cutting edge over said guard edge, a cover movable onto and off said seat, and means The provision of one abutment makes it operable upon the rear edge of the blade and also upon a midportion of the blade, during closure of the cover, for advancing said cutting edge against said stops.

2. In a razor a blade seat, a guard edge on said seat, blade stops on said guard edge, a cover movable onto and off said seat, an advancing element projecting from the underside of said cover, and resilient blade-advancing means at the rear of said seat, a single-edged wafer type blade having a reinforced rear edge engageable by said blade-advancing means and a cutting edge adapted to overlie said guard edge, said blade being provided with an aperture through a midportion thereof, said aperture being so positioned as to be engaged by said advancing element when the cover is closed for assisting the advance of the cutting edge against said stops.

3. In a razor, a blade seat provided with a guard edge and blade stops associated with the latter, a blade applicable to the seat and having a cutting edge adapted to overlie said guard edge, means for advancing the blade to abut the cutting edge against said stops, and means engageable by the midportion of the rear edge of the blade for initially locating the blade in approximate position upon the seat, said lastnamed means comprising a projection associated with said seat, and a complementary recess in said rear edge of the blade.

4. In a razor, a blade seat provided with a guard edge and blade stops associated with the latter, a blade applicable to the seat and having a cutting edge adapted to overlie said guard edge, means engageable by an edge portion of the blade for initially locating the blade in approximate position upon the seat, and means operable upon a midportion of the blade for advansing the cutting edge against said stops.

5. In a razor, a blade seat provided with a guard edge and blade stops associated with the latter, a blade applicable to the seat and having a cutting edge adapted to overlie said guard edge, a cover movable onto and off said seat, means engageable by the rear edge of the blade for initially locating the blade in approximate position upon the seat, said means including a projection associated with the seat, and means carried by the cover and operable upon a midportion of the blade, when the cover is closed, for advancing the cutting edge against said stops.

6. In a razor, a holder comprising a blade seat, a guard edge on said seat, blade stops on said guard edge, a locating projection, a seat cover, and an advancing element carried by the cover, a wafer type blade having a cutting edge adapted to overlie said guard edge, said blade having a recess in an edge thereof for engagement with said projection for initially locating the blade in approximate position on said seat, and said blade having an aperture in a midportion thereof and so positioned as to be engageable by said advancing element when the cover is closed to advance the blade against the front stops.

7. In a razor, a blade seat provided with a guard edge and blade stops associated with the latter, a blade applicable to the seat and having a cutting edge adapted to overlie said guard edge, means including an advancing element for advancing the blade forwardly to abut the cutting edge against said stops, and means engageable by an edge portion of the blade for initially locating the blade in approximate position upon the seat, said last-named means being fixedly associated and moving with a portion or" said first mentioned means.

8. In a razor, a blade seat having a guard edge and blade stops on said guard edge, a locating projection rearwardly of the guard edge, a cover provided with bladaadvancing elements, and a wafer type blade adapted to rest upon said seat and having a cutting edge adapted to overlie said guard edge, said blade having a recess in its rear edge for engagement with said locating projection for initially locating the blade in approximate position on said seat, said blade being also provided with cut-out portions on the opposite lateral sides of said recess, said cut-out portions providing abutment shoulders adapted to be engageable by said advancing elements when the cover is closed.

MARCUS B. BEHRMAN.

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