US922188A - Safety-razor. - Google Patents

Description

L. B. PRAHAR.

SAFETY RAZOR,

APPLICATION FILED MAR.16, 190a.

Patented May 1 8, 190%.

WITNESSES ATTORNEYS ment, and having end s rn'rs LOUIS B. PRAHAR, or NEW YORK, N. Y.

rnrnnrorrrca SAFETY-RAZOR.

Specification of Letters Patent.

Application filed March 16, 1908. Serial No. 221 112.

cutting blade.

In safety razors of the type to which mine belongs, it is customary to provide a bladesupporting member formed of sheet metal and having. means integral with said member or rigidly secured thereto, for holding the blade inthe desired position.

The object'of my invention is to provide a plate with which the blade has sliding engageguides or lugs to hold the blade 1n engagement with the plate as the latter is slid into place, sto s to limit the forward movement of the Elade, and a spring movable below the plane of the plate and adapted to automatically lock the blade against return movement when said blade reaches the desired position.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which. similar characters of reference indicate corresponding parts in all the figures, and in which v Figure 1 is a perspective view of one form of safety razor constructed in accordance with my invention; Fig. 2 is a transverse section, said section being taken on the line 2-.? of Fig. 3; Fig. 3 is a plan view of the blade-supporting plate; Fig. 4 is a plan view of the blade-supporting plate and cutting blade, and showing a slightly modified form of retaining spring; and Fig. 5 is a section similar to Fig. 2, but taken on the line 5 -53 of Fig. 4.

In the drawings I have illustrated a bladesupporting plate having .a handle 10 integral therewith at the rear edge thereof, but it is evident that the blade-sup jorting plate may be supported and held in any suitable man nor and by any suitable form of handle.

in the specific form illustrated in Figs. 1, 2 and 3, the blade-supporting plate 1.1 is provided at the front edge thereof :with a lurality of slots separating the edge of the p ate into a plurality of teeth 1 constituting a flat and at the opposite ends thereof, I'proich vide substantially U-shaped-slots .13, w define two sets of lugs 14 integral with the body of the plate. ,The lugs are stamped.

up, so that the larger portions thereoflie in a plane substantially parallel to the plate and spaced therefrom a distance' substantially equal to the thickness of the cutting blade. Thedistance between the outer end of one slotand the outer endof .the other is substantially equal to the length of the cutting,

blade, so thatthe lugs 14.serve not only-to Patented May 18, 1909.;

guard or comb. The plate is substantially hold the blade in engagement with the plate but also prevent long tudinal movement thereof.

At the front edge of the plate andadjaoent the ends of the comb or guard, I provide two pro ections or lugs 15, constituting sto 's for imiting the forward movement of the fade;

These stops are so placed that they engage with the cutting edge of the blade adjacent the corners thereof, so as to protect said corners, as well as to limit the forward movement of the blade. .At the rear edge of the plate .I ro'vide a spring, 16, whic his formed integra with the plate and defined by a sub-- stantially U-shaped slot 17. The slot is of sufficient may have the desired amount of resiliency, and said tongue or spring is stamped so as to normally extend slightly above the plane of the upper surface of the plate but be readily moved downward to a position below the plane of said upper surface.

In assembling the device, the blade 18, formed of thin steel, is placed directly over the spring and depressed to forcc'the spring length, so that the'tongue or spring the surface of theplatc. The blade is then moved-forward while in. engagement with the plate and is slipped under the two guides or lugs 14, and the forward movement continued until the front edge of the blade ehgages with the stops 15. At this time, the rear edge of. the blade passes out of engagementwith the spring 16,, and the latter. auto- -matically snaps upward into engagement with the rear edge ofthe bladeto holdthe latter, securely in place and, prevent the: re turn movement. The blade is held against forward movement by the stops 15, against endwise movement by the lugs 14, against rearward movement by the spring 16, and

against movement away from theplatebyfifih.

the lugs 14. All of these guides and stops are integral with the plate. an may be stamped therefrom at a single operation.

To remove the blade, it is merely necessary to depress the spring 16 with the thumb nail and the blade may freely move rear wardly over the s ring and the spring held depressed by the blade until the latter passes from under the lugs 14.

If the plate be made of a metal having but little resiliency, as, for instance, aluminum,

I may, if desired, form the spring of a separate piece of metal, as illustrated in Figs. i and 5. In this case, theplate is provided with an opening 17 adjacent the rear edge thereof, and a spring 16 is secured in any suitable manner to the under side of the plate. As shown, the spring has one end riveted and the opposite end extending upward through the opening 17 and presenting a shoulder adapted to engage with the rear edge of the blade. Other forms of springs may be provided, it only being essential that thespring be so formed and disposed rs to be capable of depression below the plane of the upper surface of the plate, so as to permit the rearward sliding movement of the blade and to automaticz'tlly riseinto engagement with the rear edge of the blade after the latter has been moved forward to the limiting position, that is, into engagement with the stops 15.

i. am aware that safety razorshave been,

designed in which stops are employed for engagement with the corners of the blade at the cutting edge thereof, and also safety razors have been designed in which the blade might be removed laterally by sliding from beneath lugs or guides integral with the plate and formed by bending oventthe edge tlmreof. By forming the guides of a portion of the plate stamped upwardly apd bounded by a substantially U-shaped' slot, Lilii'ore easily adjust them to the thickness of the blade and there is no liability of the lugs being broken off by bending them at such a slarp angle as i iiecessary when the edge of the plate is bent back upon itself to form the guide. By so forming the spring that it may be depressed below the plane of the plate, the blade may be very readily removed upon the depression of the spring-but it cannot become accidentally detached or dislocated. llaving thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In a safety razor, a blade-supporting member, a blade carried thereby, means for limiting the forward movement of said blade, means for normally preventing the rearward movement of said blade, and guides for bold.- ing said blade in engagement with said member and beneath which said blade may slide to remove the same, each of said guides being integral with said l')lade.supporting member and formed of a portion of the body thereof stamped upwardly from the member intermediate its ends and lying n a plane substantially parallel to said member and spaced therefrom a distance substantially equal to the thickness of the blade.

2. A safety razor, comprising a blade, a bladesupporting member, a handle therefor, guides adjacent the ends of said member for holding said blade in engagement with said member, stops for limiting the forward movement of said blade, and a spring for normally preventing the rearward movement of said blade, said blade-supporting member, handle, guides, stops and spring being stamped from a single piece of sheet metal.

3. In a safety razor. a substantially flat blade-supporting member formed of sheet metal and having the front edge thereof constituting a guard,-a handle at the rear edge of uniform thickness and adapted to rest directly upon said member and having sliding engagement therewith, means for limiting the forward movement of the blade, guides adjacent the ends of said member and lying in planes substantially parallel to said member and spaced therefrom a distance substantially equal to the thickness of the blade, and

of said member and depressible to a position below the plane of the upper surface of said member and adapted to automatically snap into engagement with said blade to hold the latter in position after said blade has been moved forwardly in contact with said mem ber and to its limiting position.

4. In asafety razor, .a'substantially flat blade supporting plate formed of sheet metal, a blade carried thereby and adapted for sliding engagement therewith, stops integral with said plate for limiting the forward movement of said blade, guides integral with said plate and formed of a portion of the body thereof stamped upward from the plate intermediate its ends and lying in planes subs antially parallel to said plate and spaced therefrom a distance substantially equal to the thickness of the blade,'said plate having an aperture therein adjacent the rear side thereof, and a spring adjacent said aperture and depressible to a position below the plane of the upper surface of the plate and adapted to'rise t irough said aperture and automatically snap into engagement with the rear end of the blade to hold the latter in position after said blade has been moved forwardly beneath said guides and into engagement with said stops.

5. A safety razor comprising a one-piece sheet metal bar having one end bent at an acute angle to the main body and terminating in omb teeth forminga blade support, said blade support having its opposite edges formed with integral tongues bent toward a spring adjacent said handle at the reaf'side said member, a flat blade of substantially the. end'; teeth having portions thereof pressed up forming limiting stops for the cutb tide, and a blade inserted between the tongues and adjacent portion. of

ting edge of the the blade support.

6. A safety razor comprising a one-piece sheet metal bar having one end bent at an acute angle tothe main body and terminating in comb teeth forming a blade support, said blade support having its opposite edges formed with integral tongues bent toward each other partially across the face thereof,

the end f teeth having portions thereof pressed up forming limiting stops for the cutting edge of the ade, and a blade inserted between the tongues and adjacent portion of the blade support, said bar having an integral spring tongue stamped therefroin'and projecting forwardly over the'upper edge of the blade.

' In testimony whereof I have signed'my name to this specification in the presence of two subscribing Witnesses. I

. LOUIS B, PRAHAR. Witnesses:

EVERARD B. MARSHALL, C. W. FAIRBANK.

Images