US1993575A

US1993575A - Safety razor

Info

Publication number: US1993575A
Application number: US656660A
Authority: US
Inventors: Trachtenberg Samuel
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-02-14
Filing date: 1933-02-14
Publication date: 1935-03-05
Anticipated expiration: 1952-03-05

Description

March 5, 1935. 5 TRAQHTENBERG 3 1,993,575 I SAFETY RAZOR Filed .Feb. 14, 1933 H 7 INVENTOR SamueiTrdchMiwgf. /944 1, a. W

A TTORNEY.

Patented Mar. 5, 1935 UNITED STATES PTNT OFFICE 1,993,575 SAFETY RAZOR.

Samuel Trachtenberg, Cleveland, Ohio ApplicationFebruary- 14, 1933, Serial No. 656,660

7 10 Claims. (or. 30-12,

This invention relates to razors and particfor purposes presently to be described. The boss ularly to safety razors. More particularly my 3e is also provided with angularly directed bores invention relates to razors adapted to hold blades 371, and 370. The former is tapped to receive thehaving a plurality of outtingedges which may threaded portion Za'of the handle 2. Both the 5- be used successively to the end that the usefulholes 3h and SE at their lower end converge with 5 ness of the'blad'e may be greatly prolonged before the central hole 39. The hole 370 is optionally resharpening is required. provided and if used to give greater security is One of the primary objects of my invention threaded to receive the set screw 6 preferably is to provide a holder or handle for such blades provided with a knurled head 6a.

10 which is simple in construction, easy and eco- The opposite face of the member 3 is provided 10 nomical to manufacture and certain in its operapreferably with a rib 3aforming' the edge of thetion. A further object of my invention includes holder 3 on three sides. The other edge is prothe provision of' a razor blade having means vided with a guard 3b which makes one-of the: formed with the blade whereby'the blade itself edges available for use in shaving. Pins 30 and is securely mounted on the holder and readily rerectangular bosses 3d are provided also on this 15 moved without any danger: of cutting to the face and fit the corresponding opening in the operator when he removes the blade. Further blade as presently to be described. The pins 30 and incidental objects will appear more fully and'bosses 3d-maybeof any shape and disposed hereinafter. in any orderly manner but are preferably'ar 0 For a complete conception of my invention ref ranged in the manner shown in Figure 2. erence may be had to the accompanying drawing A blade 5 for use with this form of holder is and following description and while in said formed of a piece of steel having a plurality of drawing I have only depicted the best mode in cutting edges 5a. Circular and rectangular slots which I have contemplated embodying my in- 50 and 5d respectively are punched in the blade,

vention, corresponding parts and' mechanical as well as a centrally located opening 56 into- 25 equivalents are within the scope thereof. In which a piece of tubing of brass or the like is said drawing, fitted and secured by spot-welding, peening or Figure 1 is a viewpartly in elevation and partly similarmethods. A piston like member l, is slide in sectionof a complete razor and: holder emb'odyably fitted within this tubing and its ends are ing my invention; 1 riveted to form retaining flanges ia. For use with 30 Figure 2 illustrates a face View of the razor and the form of device shown in Figures G and 'I'the holder as viewed from the line 2--2 in the direcblade stem 5b is provided with a threaded-portion of the arrows; 7 I tion 5]. t .f

Figure 3 is a transverse section taken as on the In operation the central stem 5b of a blade is line 3-3 of Figure 2; inserted in the opening 39 and the slotted por- 35 Figure 4 is a top plan view of a multi-sided tions 50 and 5d receive and encompass the pins 30 blade for use with my improved holder; and 3d respectively, thus ensuring that the blade Figure 5 is a transverse vertical section of the cannot move on the member 3 and become insame taken on the line 5-5 of Figure 4; operative. To the pendth'at only oneof the cut- 40 Figure 6 illustrates a view partly in section and ting edges may be accessible the blade itself fits 40 partly in elevation of a modified form of holder within the depressed portion formed by the ribs and blade; and 3a previously described. In this manner there is Figure 7 is a vertical section taken on the line no danger to the operator of being cut by any 77 of Figure 6 showing optional means of of the unused edges of the 1 blade. When the tightening a blade. 7

V members

3 and 5 arethus assembled the handle 45 ,Referring to the same parts throughout the 2 is screwed tight and the razor is ready for several views by the same reference characters use. If the member 3 is provided with the set I designate a handle by the numeral 2.' The screw 6 this is additionally tightened till its end handle 2 is preferably provided with a knurled frictionally engages the stem 5b. 7 I surface 21) and a narrowed threaded portion 2a. I the modified form shown in Figures'fi and 7 50 The threaded handle 2, a flat blade holder 3 a, iJ-shaped member 3:0 is integrally formed with and arazor blade 5-formthe essential components the boss 3. A collar 8 slidably mounted inthe' of this invention. The flat holder 3 is preferably top of the member 3m is internally threaded to provided with an integrally formed boss 36 on receive the tapped portion 5 on the stem 51). 55 the one side and has a bored central opening 39 An enlarged knurled flange 8a is provided at one 55 end of the collar while the other end is flanged or riveted as at 8b to prevent the collar from sliding out when the blade stem is removed. In this manner the blade may be tightened against the face of the blade holder 3.

Special attention is directed to the shaft 4 which slides freely within the sleeve 5b. Shaft 4 and sleeve 5b may have any shape and since the sleeve is an integral part of the blade the shaft 4 provides means for removing the blade without danger to the operator of being cut. If the razor handle is held ready for use the weight of the shaft 4 causes it tofall downwardly and assume the dotted positions shown in Figures 1, 5, 6 and '7 which if placed as shown in full line in these figures the weight of the shaft will cause to slide down. The turned edge 4a contiguous to the blade in its operative position presents no interference to the full and complete use of the blade, since it is substantially flush with the face of the blade.

It will be apparent that the construction shown is simple and economical to manufacture and one in which parts may be eliminated if desired for any reason by those skilled in the art to which my invention relates. Obviously, many modifications of the invention are possible as suggested by the drawing and specifications and included within the scope of the appended claims.

Having thus described my invention what I claim desire to secure by Letters Patent is:

,1. A safety razor comprising a blade having an opening in its center, a sleeve registering with said opening and secured to said blade, and a shaft slidably secured within said sleeve, a guard plate for said blade and a handle adapted to secure with itself said blade, sleeve and plate.

2. A safety razor comprising a blade having an opening in its center and a sleeve registering with said opening and secured to said blade, and a shaft slidably secured within said sleeve, a guard plate for said blade having a boss on one side, a'

centrally located bore and an angularly disposed threaded bore joining said central bore, and a handle threaded at one end adapted to secure with itself said blade, sleeve and plate.

3. Asafety razor comprising a blade having an opening in its center and a sleeve registeringwith said opening and secured to said blade, and a shaft slidably secured within said sleeve, a guard plate having means for holding said blade on one side and a boss on the other side, said boss having a centrally located bore and an angularly disposed threaded bore joining said central bore, and a handle threaded at one end and adapted to secure with itself said blade, sleeve and plate.

4. A safety razor comprising a blade having slotsand a plurality of cutting edges, an opening in its center, a sleeve registering with said opening and integrally secured to said blade and a shaft slidably secured within said sleeve, a guard plate for said blade having, teeth on one edge, a raised shoulder on the other edges, detent pins registrable with said slots in one side and a boss on the other side, a centrally located bore and an angularly disposed threaded bore joining said central bore, and a handle threaded at one end and adapted to secure with itself said blade, sleeve and plate.

5. A safety razor comprising a blade having slots and a plurality of cutting edges, an opening in its center, a sleeve registering with said opening and integrally secured to said blade, and a shaft slidably secured within said sleeve, a guard plate for said blade having teeth on one edge, a raised shoulder on the other edges, detent pins registrable with said slots in one side and a boss on the other side, a centrally located bore and angularly disposed threaded bores joining said central bore, and a handle threaded at one end and adapted to secure with itself said blade, sleeve and plate.

6. A safety razor comprising a blade having slots and a plurality of cutting edges, an opening in its center, a sleeve registering with said opening and integrally secured to said blade, and a shaft slidably secured within said sleeve, a guard plate for said blade having teeth on one edge, a raised shoulder on the other edges and detent pins registrable with said slots in one side and a boss on the other side, a centrally located bore and angularly disposed threaded bores joining said central bore, a handle threaded at one end. and adapted to secure with itself said blade, sleeve and plate by engagement with one of said threaded bores and a set screw engaging the other.

7. A safety razor comprising a square blade having regularly spaced slots and a plurality of cutting edges, an opening in its center, a sleeve registering with said opening and integrally secured to said blade, and a shaft slidably secured within said sleeve, a guard plate for said blade having teeth on one edge, a raised shoulder on the other edges and detent pins registrable with said slots in any operable position in one side and a boss on the other side, a centrally located bore and angularly disposed threaded bores converging with said central bore, a handle threaded at one end and adapted to secure with itself said blade, sleeve and plate by engagement with one of said threaded bores and a set screw engaging the other.

8. A safety razor comprising a blade having a plurality of cutting edges, an opening in its center, a sleeve registering with said opening and integrally secured to said blade, and a shaft slidably secured within said sleeve, a guard plate for said blade having detent means in one side and a boss on the other side, a centrally located bore and anangularly disposed threaded bore joining said central bore, and a handle threaded at one end and adapted to secure with itself said blade, sleeve and plate.

9. A safety razor comprising a blade having an opening, a sleeve registering with said opening, integrally secured at one end to said blade and threaded at the other, and a shaft slidably secured within said sleeve, a guard plate for said blade, having a boss on one side with a U-shaped bearing formed on its top, a centrally located bore therein and an angularly disposed threaded bore joining said central bore, a nut rotatively secured within said bearing, axially aligned with said central bore and adapted for engaging the threaded end of said sleeve, and a handle threaded at one end and adapted to secure with itself said blade, sleeve and plate.

10. A razor blade having an opening, and a pin having flanges on its ends slidably but irremovably secured in said opening and longitudinally movable therein.

SAMUEL TRACHTENBERG.