US1977534A

US1977534A - Safety razor

Info

Publication number: US1977534A
Application number: US698886A
Authority: US
Inventors: Erik G Tornkvist
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-11-20
Filing date: 1933-11-20
Publication date: 1934-10-16
Anticipated expiration: 1951-10-16

Description

Oct. 16, 1934. E. e. TORNKVIST SAFETY RAZOR Filed NOV. 20, 1933 i INVENTOR TNE E E7170 G.Tor'n/kvisi 5 f 'Q%/ a 2M? A;2?/

- ATTORNEYS Patented Oct. 16, 1934 UNITED STATES PATENT OFFICE This invention relates to safety razors and has for an object to provide an improved construction wherein means are provided for pressing the lather into the skin immediately before the blade performs its function.

Another object of the present invention is to provide an improved safety razor formed to receive and properly hold blades having one or more openings.

An additional object of the present invention is to provide a safety razor wherein the blade clamping plate is caused to function through the action of a swinginglever' carried by the handle of the safety razor.

In the accompanying drawing- Figure 1 is a perspective view of a safety razor disclosing an embodiment of the invention;

Figure 2 is a longitudinal vertical sectional 0 view through the structure shown in Figure 1;

Figure 3 is a sectional view through Figure 2 on the line 33, the same being on an enlarged scale; I

Figure 4 is a vertical central sectional view through the upper part of the device taken at right angles to Figure 2 and illustrating how the cam, arm or lever moves the clamping plate into clamping position;

Figure 5 is a view similar to, Figure 4 but showing a complete section with the cam lever in closed position;

Figure 6 is a perspective view of the upper part of the cam lever shown in Figure 2;

Figure 7 is a sectional view through Figure 5 on the line 7+7;

Figure 8 is a top plan view of the structure shown in Figures 1 and 2, part of the clamping plate being broken away for illustrating the relative position of the blade;

Figure 9 is a top plan view of a conventional blade now on the market and capable of being used with the structures shown in Figures'l and 2; s

Figure 10 is a plan view of anotherform of blade now on the market which is capable of being used with the structure shown in Figures- 1 and 2;

Figure 11 is a plan view of another safety razor blade of special construction and capable of being used with the structure shown in Figures 1 and 2;

Figure 12 isa top plan view of a slightly modified structure to that shown in Figure 1;

Figure 13 is a sectional view through Figure '12 approximately on the line 13--13;

Figure 14 is a plan view of another form of razor blade having only a single opening, said blade being capable of being used with the structure shown in Figures 12 and 13.

Referring to the accompanying drawing by 69 numerals, 1 indicates a handle which is welded, soldered or otherwise rigidly secured to a base 2, shown in Figure 5, said base at the sides carrying depending flanges or

side plates

3 and 4 which act as bracing structures and also act to support the

rollers

5 and 6 which are rotatably journaled therein. These rollers take the place of the usual guard fingers in safety razors as now commonly used. The ordinary safety razor is provided with a number of fingers of a de- 70 sired kind and when the device is used the fingers press against the body and push away the lather so that approximately half the skin is freed of lather before the edge of the blade cuts the hair. In the present invention by using the

respective rollers

5 and 6 the lather is forced downwardly into the skin whereby the lather acts to" hold the hair ina desired position to engage the edge of the razor blade.

The! base 2 on the upper surface is rounded in a desired manner so that when the blade, for instance, blade 7, is applied as shown in Figure 4 and the parts moved to their operative or active position, the blade will bend or bow rather to the position shown in Figure 5, which 35 is the position the parts are held in when the device is in use. A clamping plate 8 acts to clamp the blade 7 in the position shown in' Figure 5, said plate being arc-shaped with the

end portions

9 and 10 depending somewhat so that they will press the blade against the edge portions of the base 2 while leaving the center part of the blade free. The clamping plate 8 is provided with a stem 11 which is riveted or otherwise secured to plate 8 and depends therefrom into the hand 1 when the device is in use.

' The stem 11 is cut away at opposite sides, namely, at points 12 and 13 (Fig. 2), whereby a head 14 is provided having

shoulders

15 and 16. A lever 1'7 coacts with the shoulders 15 109 and 16 to pull the stem 11 and plate 8 from the position shown in Fig. 4' downwardly to the position shown in- Fig. 5, wherein the blade 7 is connected firmly in position. The lever 17 is pref- V erably a U-shaped member in cross section but is'provided with inturned facing flanges l8 and 19 with a slot or opening 20 therebetween. A comparatively large aperture 21 is provided in the front wall 22 of the lever 17 whereby when the lever is swung to the dotted position (Fig. 110

17 is provided with pivotally mounted extensions or pins 23 and 24 which project through suitable apertures in the handle 1 so that the lever may be swung back and forth freely. At the lower end the lever 17 is provided-with aclosure plate 25 having an aperture 26 through which the stem 27 extends, said stem being rigidly s'ecured to a thumb member 28 by the pin 29. A.

locking catch 30 is preferably formed integral with the stem, said catch being formed with a bottom plate 31 and an arc-shaped flange 32. This flange is adapted to be passed beneath-the extension 330i lug 34 riveted or otherwise rigidly secured to hand 1, as shown in Figure 5.

When the parts are in the position shown in Fig. 5 therefore, lever 17 is locked in position and the razor is imposition for use. Whenit is desired toremove blade '7 the thumb member 28 is grasped and rotated until the flange. 32 is released from extension 33.v Lever 17 is then swung upwardly to the dotted position shown in Fig.5, then the clamping plate Sis grasped by the fingers and lifted upwardly until it is .disengaged. If desired the blade 7 could be removed at thesame time. If desired the same blade could be replaced or a newblade used.

Where a new blade is to be substituted the sameis placed on the base 2 and then the stem 11 is inserted, after which the lever 1'7 is swung down.

wardly and locked as shown in Fig. ,5.

Where any of the

blades

35, 3 6 and 3'? are.

used it is preferable to placethem in position on the base 2 before thestem 11 is inserted. All of the blades just described will accommodate the

retaining pins

38 and 39 whereby the blade cannot rotate. These retaining pins are constructed as shown in Fig. 3 and Fig. 13, namely, from a solid piece of metal having notches 40 and 41 formed therein whereby the bars 42 of blade 37 may be accommodated and also whereby there-is a resilient action to the members 43 and 44. This resilient action is such as to hold the pins in place by friction either in an upper or raised position, or in a lowered position. A retaining pin 45 is provided for each of the

pins

38 and 39, said retaining pin being positioned so that the ends will slide in the. slots 46 and 47 (Fig. 3). 1

When the blades shown in Figs. 9, 10 and 11 properly centered by the

pins

38 and 39, which pins project upwardly into

suitable recesses

48 and 49 formedin the clamping plate 8. Where a blade as, for instance, blade 50, isto be used' a slightly modified structure is used in the way of a clamping plate. 50 is provided with only one aperture, namely,

aperture 51. This blade is ,also provided with- As shown in Fig. 14 blade.

notches 52 so as to fit certain forms of razors besides that illustrated. Where this form of blade, or any form of blade having only a single aperture, is used, means must be provided for preventing the rotation of the blade. To carry out this idea there is provided a special clamping plate 8' having depending

extensions

54 and 55 fitting into the

notches

56 and 57 in the

flanges

3 and 4.. The

notches

56 and 57, however, are shown in Figs. land 5 but are not utilized when the

blades

35, 36 and 37 are used. When a blade with a single aperture is used the depending

extensions

54 and 55 fit over the edges of the blade, namely, over the respective extensions 58 whereby the blade cannot rotate but stem 11 may readily be inserted and actuated by the lever 17 as shown in the preferred form. Also it will be seen that the

pins

38 and 39 are pressed downwardly as shown in Fig. 13 because there are no apertures in the blade toaccommodate the same. v

I clairnq, v

.1..A safety razor comprising a base, a handle for normally'supporting the base, and clamping means for clamping a razor blade on said base, said clamping means including a clamping plate provided with a stem, a member pivotally mounted at one end-with meansat the pivotally mounted end which interlocks with the end of saidstem and acts as ,a cam for pulling the same to a position for causing the plate to clamp a bladeon said base, and means for locking the member in an operative position.

2. A safety razor including a base for: the reception of a. blade, a handle extending from saidbase andmeans for clamping the blade on said base, said means including a clamping plate, a stem extending from said clamping plate and provided with a pair of shoulders, a hollow leverhaving an-opensidasaid lever being positionedto straddle said stem, one end of said lever being pivotally connected to said handle and formed. with flanges overlapping and engaging said-shoulders and acting-with the other p art of thel everi as a cam whereby when the lever is swungto oneposition; it will engage and pull said shoulders and .stem so as to cause said clamping plate to function.

H 3. A safety razorcomprising a base having a centrally positioned aperture, a hollow handle carried by said base with the center. in actual alignment with said aperture, said handle having an openside, and means for clamping a razor blade on said base, said means including a clamping plate, a stem provided with a pair of shoulders extending from said clamping plate through said aperture, a lever substantially U-shaped incross section provided with a pair of laterally extending journal pins at one end, saidjournal pins extending through said handle for pivotally mounting said lever, said lever at the pivotally mounted end being formed with a pair of spaced facing flanges positioned to engage saidshoulders for pulling said stem and thereby causing-said clamping plate to function, and a rotatable catch carried by said lever at the end opposite said flanges, and a member carried by said handle positioned to interlock with said catch when the lever is swung to a position within said handle and the catch is turned to functioning position.

. 1 ERIK G. TORNKVIST.