US855252A

US855252A - Safety-razor.

Info

Publication number: US855252A
Application number: US28544905A
Authority: US
Inventors: Edward Krusius
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-11-01
Filing date: 1905-11-01
Publication date: 1907-05-28
Anticipated expiration: 1924-05-28

Description

PATBNTED MAY 2B, 1901.

13. Knusms, SAFETY RAZOR.

APPLICATION FILED NOV. 1, 1905 INVENTOH ,Z'ammmwzw WITNESSES ATTORNEYS 'terchangeableblade, and to tion, and each formed UNITED STATES PATENT orrrcn.

EDWARD KRUSIUS, OF NEW YORK, N.--Y.

SAFETY-RAZOR.

To all whom it may concern-.-

Be'it known that I, EDWARD KRUSIUS, a citizen of the United States, and a resident of the city ,of New York, borough of Manhat tan, in the county and State of New York, have invented a new and Improved Safety- Razor, of which the following is a full, clear, and exact description.

The object of the invention is to providea new and improved safety-razor having interchangeable razor-blades arranged to provide a large number of cutting edges on each inpermit of conveniently and quickly placing the razor-blade in position on the holder, or removing it there om.

The invention consists of novel features and arts and combinations of the same which will e more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming apart of this s eclfication, in which similar characters of re sponding parts in all the news.-

Figure 1 is a plan view of the improvement; Fig. 2 is a sectional side elevation of the same, on the line 2-2 of Fig. 1; Fig. 3 is a face view of the razor-blade; Fig. 4 is an edge View of the same; and Fig. 5 is an enlarged cross section of the improvement, on the line 5-l') of Fig. 2, showing more particularly the fastening of the nut in the handle.

The safety razor ischangeable razor-blades A, alike in construcof an exceedingly thin piece of steel of polygonal shape, preferably I cutting edges square, as illustrated in the awings, each side of the blade being formed into a straight cutting edge A, to provide a lar e number of for each blade; t at is, for a square blade, four cutting edges, as illustrated in Figs. 1 and 3. By making the raedge Af of the others, a diagonal slot A zor-blade A of very thin steel, it is rendered lexible, and in order to allow each cutting to flex properly and independently is cut inward from each corner, as indicated in Fi 3.

The razor-blade A is also provided with a central aperture A, made polygonal, preferably squared as shown.

The razor-blade A arranged and constructed in the manner described is removably held in a holder, consisting essentially of a blade support B, made polygonal in shape 8.I1(l h&V1I1g G8.GlI edge formed into a guard Specification of Letters Patent. Application filed November 1,1905. Serial-110386.449.

adjacent to the cutting edges A erence indicate correguard B in provided with inter-' 'on the screw-rod E, as

o the support B, to bend Patented May 28, 1907.

B for the corresponding cutting edge A. A handle 0 is centrally secured to the blade support B, and is preferably made hollow and square in cross section, the ,upper end of the handle projecting beyond the outer face of the support B, to orm an offset C, fitting .the aperture A of the blade A, to position the latter on the support B; that is, to bring its cutting edges A in proper relation to the guards B.

The backing D for the razor-blade A is in the form of a square plate, the sides D of which engage the sides of the razor-blade A for firmly clamping the blade A between the support B and the backing D. The latter is provided with a square shank D fitting the interior of the hollow handle 0, so as to hold the backing against turning, but to allow the backing to shde in the direction of the length of the handle (J. In the backing D and its shank l) is mounted to turn a screw rod .E, screwmg with its threaded portion in a nut F secured within the handle U by transverse pins G or other suitable means; and the head E v of the said screw E abuts against the outer face of the backing D at the middle thereof. The said head E is rounded olf to form a guide adapted to engage the face of the user of the razor, with a view to bring the corresponding cutting edge of the blade A and the proper relation to the face, with a view to insure correct shaving. V

The screw-rod E is heldagainst displacement on the backing D by a transverse pin H secured to the shank D and extending transversely in an annular groove E formed plainly shown in in turning the head E in one directi0n, the backing D is caused to move inward toward the normally straight razorado A on the curved or arched upper face of the support B, to bring the cutting edges A of the blade A in proper relation to the guards B. When turning the head E in a reverse direction, the backing D is moved away from the su )port B, and in doing so releases the blade A, to allow the latter toreturn to its normal straight position by its own resiliency.

When it is desired to remove a razor-blade A, the screw-rod E is turned until it unscrews completely from the nut F, to allow of removing the back" g D and its scr'ew-rod E, so that the operator may take hold of the blade A and lift the same from screw'rod E screwed up, so

engages the the support the support B. polygonal be substituted, aperture, a handle secured to the said supreplaced and the port and having a polygonal bore, a backing that the backing l'plate for the blade having a polygonal shank fitting the said handle bore, a nut in the handle, a screw-rod mounted to turn in the said backing plate and means on the said backing plate for Another blade may now and then the backing D blade A and bends the same on B, whenever it is desired to use l the safety razor for shaving purposes.

The safety razor shownand described is very simple and durable in construction, permits of conveniently interchanging the razorblades, and, owing to the large number of cutting edges on each blade, the user can rel peatedly shave without changing the blade.

in the irection of its lengtl V 4;. In a safety razor, a hollow polygonal handle, a polygonal support secured upon the handle a short distance from one end thereof, a polygonal blade on the support an having a central polygonal opening through which the projecting end of the handle ex- 1. In asafety razor, a square support havtends, a backing plate having a polygonal ing a convex outer face and provided with a tubular shank fitting in the handle, 'a nut in guard at each edge, a handle secured to the the handle, a screw passing throu hthe tusupport, bular shank of the backing plate an engaging a flat and resilient blade square in shape and having a slot at each corner, the'nut, and, means for'preventing the screw from moving endwise.

means for holding the blade on the support to 5. In a safety razor, a support having a prevent it from turning thereon, a square curved outer face, a handle secured to the backing plate having a concave inner face and engaging the blade adjacent to its edges, support with its end, projecting a short dist'ance beyond the outer face of the support,

a nut in the handle, and a screw passin through the backing plate and engaging sai 111113.

2. A safety razor, comprising a flexible square blade having a central polygonal aperture and a cutting edge at each side, a blade support made square and. having a central polygonal offset for engaging the said blade aperture, a handle secured to the said support and having a polygonalbore, a back ing plate for the blade having a polygonal shank fitting the said handle bore, anut in the handle, and a screw-rod mounted to turnin the said backing plate and screwin in the said nut, the head of the screw-rod being centrally arranged on the outside of the said backing plate to form aguide.

3. A safety razor, comprising a flexible square blade having a central polygonal aperture and a cutting edge at each side, a blade support made square and having a central Having thus described my invention, I claim as new and desire to secure by Letters Patent 1- and having a correspondingly shaped bore, a thin resilient blade-on the support and having a central polygonal opening through which the end of the handle extends, a backing plate having a concave inner face and a polygonal the handle, a nut in the handle, a screw in the shank of the backing plate and engaging the nut, the screw being provided with an annular groove, and a transverse pin in the shank of the backing plate and engaging the said groove.

' In testimony name to this specification in the presence ,of two subscribing Witnesses.

EDWARD KRUSIUS.

Witnesses ANIEL BAOH, CARL RAUTENBACH.

offset for engaging the said blade and screwing in the said nut,

holdin the said screw-rod against movement,

the inner end of the handle being polygonal.

whereof I have signed my tubular shank fitting in the bore of 8o