US2600318A

US2600318A - Safety razor

Info

Publication number: US2600318A
Application number: US98812A
Authority: US
Inventors: Patrignani Leonida
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-06-13
Filing date: 1949-06-13
Publication date: 1952-06-10
Anticipated expiration: 1969-06-10

Description

June l0, 1952 PATRIGNAN] 2,600,318

SAFETY RAZOR Filed June l5, 1949 19 @aum/MMM INVENTOR. LEONIDA PATRIGNANI fa. ATTO/mn Patented June O, 1952 UNITED STATES PATENT oFFlcE-gf SAFETY RAZOR Leonida Patrignani, Bologna, Italy Application J une 13, 1949, Serial No. 98,812

8 Claims.

The present invention relates to improvements in safety razors and more particularly to safety razors of the Gillette type.

Conventional safety razors have many disadvantageous features. For example, the conventional razor comprises a plurality of parts which together with a blade must be assembled for use and which must be taken apart after use in order to remove the used blade for cleaning or for replacement. Such cleaning involves washing and drying Kand sooner or later results in deterioration of the parts which are usually of brass plated with material such as silver, chromium o r other suitable materials. The conventional razors are also relatively rigid and heavy so that the user f,

can not so readily feel the degree of pressure of the blade on the skin.

An important object of the invention is to provide a novel and advantageous form of razor which will obviate the aforesaid and other disadvantages of the forms of safety razors heretofore in use.

Another object of the invention is to provide a safety razor which is very compact in form, economical to manufacture and efficient in operation.

Still another object of the invention is to provide a safety razor adapted to use single-edge blades formed by cutting or splitting a standard or conventional double edge blade.

Yet another object of the invention is to provide a safety razor in which all parts except the blade are formed from resilient wire which may be corrosion and oxidation resistant.

A further object of the invention is to provide a novel and advantageous form of razor which can be manufactured without requiring use of elaborate equipment such as usually required for machine and tool operation. and metal treatments in making a conventional safety razor.

According to a preferred embodiment of the invention, the razor may be made of non-corrosive resilient wire, preferably of non-oxidizable steel and of the order to 1.8 mm. in diameter. The wire in the handle is in the form of a helix with coils at the free end of slightly greater diameter to provide a head or knob. The free end of the wire in such larger coils is turned across the outer end of the last full coil at this end.

At the inner end of the handle, the Wire is formed into a smaller coil adapted to guide a double thickness of wire for a purpose to be stated hereinafter. From this smaller guiding coil or loop the wire extends in the same general direction as the axis of the handle to a point at a suitable distance from the handle. At this point the wire is formed into a generally rectangular frame and the free end of the wire is carried back along the wire supporting said frame and is held thereto by a coil therearound. Across said frame are 2 two blade lsupports on the outside of which the single edge `blade rests with its back edge against one side of the frame.

The blade is held against said supports by a Wire element or plunger having a straight portion extending across the outer side of a blade on the blade supports, the wire at the ends of said straight portion extending between said blade supports in position to pass through notches at the ends of the single edge blade, then inwardly from both sides to a central location and then side by side through said smaller guiding coil, and through said handle to its outer end where the two wire ends are hooked over the outer end of the wire of the handle. It will be evident that the plunger element is made up principally of a blade holding loop and a stem .extending through said handle.

By compressing the coil of the handle, the blade holding end of the razor may be opened for insertion or removal of a blade.

The razor of the present invention has many advantages. From the standpoint of manufacture an advantageous feature is that the razor can be made entirely from one form of material namely resilient wire. There are two unitary main parts and two blade supporting members. The parts can easily tbe formed and permanently assembled. Furthermore there are no pivots to cause wear.

The razor of the present invention does not have to be assembled or taken apart, thus saving time, and is easy to use. The razor does not have to be dried after washing. The life of the razor of the present invention is substantially unlimited. The razor is elastic and light and Works with a spring action that allows one to feel the degree of pressure on the skin. The shape and construction of the frame is such that the blade is held perfectly flat and is so exposed as to permit cleaning thereof without removal from the blade holding means. The blade is held accurately in position. The razor being very light and resilient is not likely to be injured if dropped and it is not likely to injure anything on which it is dropped.

Other objects, features and advantages will` leasing and removing a blade from the razor; and

Fig. '7 is a View illustrating a conventional frame I1. If desired such projections could easily be eliminated. Such severing of the blade 3Ia might be affected while the blade is in its papel' Wrapper.

An advantage 0f the blade and razor of the present invention is that the blade is narrow and the razor itself is very compact. Another advantage is that only one sharp edge at a time is subjected to the wear and tear of washing and wiping, Whereas in a double-edge blade each edge is subjected to such wear and tear even if it is not used.

It should be understood that various changes may be made, and that certain features may be used Without others, without departing from the true scope and spirit of the invention.

What is claimed is:

1. A razor for use with a single edge blade having a front cutting portion and front-facing shoulders at the ends thereof, comprising a frame with two parallel blade supports separated by a slot and means to abut from the rear a blade resting on said blade supports, blade-gripping means comprising a blade-gripping member to engage said blade opposite said slot and side members extending rearwardly through said slot and spaced to permit the insertion of said front cutting portion of said blade and to engage said shoulders, a handle supporting said frame, and a spring connection between said handle and said blade-gripping means to permit shifting thereof for insertion or removal of a blade.

2. The combination according to claim 1 wherein the handle is a helical spring connected at its inner end to said frame and at its outer end to a stem passing through said helix and connected to said side members attached to the blade-gripping member.

3. The combination according to claim 1 wherein said handle is a helix of resilient wire, said frame is formed of wire extending from one end of the coil, and said blade-gripping means comprises a single wire forming said blade-gripping member and arms, and extensions of said arms brought together in a stem extending through said helix and connected to the outer end thereof.

4. A razor comprising a handle of resilient wire in the form of a helix, a generally rectangular frame formed of the wire from one end of the helix and extending transversely with respect to the axis of the helix, parallel blade-supporting members extending across said frame and providing a slot therebetween; an element comprising a wire with a part extending parallel to said slot to engage the outer side of a blade over said slot and parts at the ends of said blade passing rearwardly through said slot and coming together in a stem extending through said helix to the far end thereof, and means connecting the outer ends of said stem and said helix.

5. A safety razor comprising a rod to engage one side of a blade, two rods at the opposite side of the blade with a slot therebetween opposite the first-mentioned rod, and a spring means to press 6 Y said rod at one side and the two opposite rods toward each other to hold said blade firmly in position.

6. The combination of claim 5 in combination with a handle connected at one end to said two rod supporting means and comprising a helical spring connected at the other end to said rod at the opposite side of the blade.

7. A razor for use with a single-edge lblade having a front cutting portion and front-facing shoulders at the ends thereof, a helical Wire spring handle terminated at one end by a transverse part constituting a holding pin extending across the outer end of the handle, the Wire at the other end of said spring having a guiding loop of lesser diameter and beyond the guiding loop a generally rectangular frame having a rear side closed at its middle by the free end of the wire projecting from said guiding loop and providing an abutment for the rear edge of a blade, two parallel blade supports separated by a slot and secured at their ends to the front sides of the ends of said frame, and means for holding said blade on said blade supports with its rear engaging said abutment comprising a blade-gripping member on the opposite side of the blade from said slot and side members spaced to received the front cutting-portion of said blade and engage said shoulders, and extensions of said side members brought together at the rear of said frame and passing through said handle and grasping said holding pin.

8. A razor comprising a handle of resilient wire in the form of a helix, a generally rectangular frame formed of the wire from one end of the helix and extending transversely with respect to the axis of the helix, parallel blade-supporting members extending across said frame and providing a slot therebetween; an element comprising a wire with a part extending parallel to said slot to engage the outer side of a blade over said slot and parts at the ends of said blade passing rearwardly through said slot and coming together in a stem extending through said helix to the far end thereof, the rear sides of said frame serving as an abutment for engagement by the rear edge of said blade and the front side of said frame being offset to one side of the blade position to serve as a guard for said blade.

LEONIDA PATRIGN AN I.

REFERENCE S CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 845,784 Heimerdinger Mar. 5, 1907 1,069,668 Bell Aug. 12, 1913 1,210,006 Schmitt Dec. 26, 1916 1,734,554 Behrman Nov. 5, 1929 1,805,509 Behrman May 19, 1931 1,832,834 y Schumacher Nov. 17, 1931 2,405,200 Feldman Aug. 6, 1946