US1928363A - Safety razor - Google Patents

Description

Sept 2 1933. N TEsTl 1,928,363

SAFETY RAZOR Filed Oct. 15, 1930 Patented Sept. 26,1933

PATENT OFFICE I SAFETY RAZOR Nicholas Testi, New York, N. Y,., assignor, by mesne assignments, to Gillette Safety Razor Company, Boston, Masa, a corporation of Delaware Application October 13, 1930. Serial No. 488,568

' 9 Claims. (Cl. -12) The present invention relates to that class of safety razors in which two clamping members, a guard member and a blade backing member, are provided, and a thin flexible blade is clamped between the guard and backing members to retain the cutting edges of the blade in shaving relation to the guard teeth.

The main object of the invention'is to provide a safety razoroi the type mentioned on which a blade may be conveniently mounted and which can be efllciently cleaned without the necessity of .taking apart the implement with the consequent liability of losing parts, thus removing an objectionable feature of the devices of this character.

Another object of the invention is to so design a razor of the character specified that it is adapted to be employedin connection with slotted blades now generally in use.

A further object of. the invention is to produce a razor of the type mentioned which permits of quick mounting and dismounting of the blade, and wherein the two clamping members are so constructed that their relative positions for mounting and dismounting the blade are predetermined by stops on one of said members for co-operation with the other member.

A still further object of the invention is to produce a razor of the type above referred to which is simple in construction, efllcient in operation, durable in use and capable of manufacture on a commercial scale, or in other words one which is not so difllcult to make as to be beyond the reasonable cost of such a contrivance.

' A further object of the invention is to provide a' slotted blade for co-operation with a razor of the type specified. p

With these 'and other objects in view, which will more fully appear as the nature of the invention is better understood, the same consists in the combination, arrangement and construction of parts hereinafter described, pointed out in the appended claims and illustrated in the accompa y drawing, it being understood that many changes may be made in the size and proportion of the several parts and details of con struction within the scope of the appended claims, without departing from the spirit or sacrificing any of the advantages of the invention. I

One of the many possible embodiments of the invention is illustrated in the accompanying drawing, in which:--

a Figure 1 isan end view of a razor constructed in accordance with the present invention; Fig. 2 is a section taken on line 2--2 of Fig. 1; Fig. 3

is a section taken on line 33 of Fig. 2, part of the blade backing member being shown in-elevation to more clearly illustrate the co-operation of the elements; Fig. 4 is a top plan view of the guard member of the construction; Fig. 5 is a plan view of the improved blade; Fig. 6 is a perspective view of the razor with its blade backing member in a position to permit mounting and dismounting of a blade on the razor; Fig. 7 is a central transverse vertical section taken through the construction shown in Fig. 6 with the blade backing member shifted to a position ready to clamp the blade; and Fig. 8 is a section taken on line 8-8 of Fig. 7.

In the drawing the numeral 10 indicates a guard member, provided with suitable guard teeth 11 along its opposite longitudinal edges. In the longitudinal center line of the guard member are provided on the blade receiving face thereof two spaced blade-positioning studs 12 of any suitable configuration. In the case illustrated these studs are cylindrical, and from the free end of each of the same projects within the area of the stud a stop 13, for a purpose hereinafter to be described. These stops are located in alignment with one another on one side of the longitudinal center line of the guard member, as clearly appears from the several figures of the drawing. Between each stud and the adjacent transverse edge of the guard is formed in the latter an opening 14, to receive a post associated with the blade backing member, as will hereinafter more fully appear.

, The guard member is mounted on a spindle 15, which extends rotatably through the center thereof. In theexample illustrated in the drawing. a central cup-shaped depression 16 is formed on the guard member, having a hole 17 through which is extended the reducedend 18 of the spindie, a shoulder 19 being thus formed, which bears against the depression. The reduced end 18 of the spindle is provided with a head 20, wholly disposed within the depression 16 so as not to interfere with the proper positioning of the blade on the guard. The reduced portion 18 of the spindle flts somewhat loosely in the hole 1'? in the guard, thus permitting rotation of the spindle on the guard.

The spindle 15 extends rotatably and slidably through a tubular handle 21, and carries on its outer end, which is disposed outside of the handle 21, a knurled knob 22. To the spindle 15 is fixed a pin 23, seated in a cam slot-24 in the handle. To the handle 21 is attacheda bridge member 25, from which project two posts 26 extending the thickness of said blade backing member, said slot permitting the blade to be moved over said shiftable means and said backing member when one of the longitudinal edges of the latter coincides with the longitudinal'axis of said guard member, and means for relatively moving said guard and blade backing members into blade clamping position.

5. A safety razor according to claim 4, comprising stops on said guard member for limiting the oscillating movement of said backing member in relation to said guard member.

6. A safety razor according to claim 4, comprising stops on said positioning studs for limiting the oscillating movement of said backing member in relation to said guard member.

7. A safety razor comprising a guard member, a blade backing member, means shiftable at right angles to said guard member, said backing member being pivotally mounted on said shiftable means to permit oscillation thereof on its longitudinal axis to cause one of its longitudinal edges to substantially concide with the longitudinal axis of said guard member when said guard and blade backing members have been moved apart a distance exceeding one-half of the width of said backing member, and stops on said guard memberfor limiting the oscillating'movement of said backing member in relation to said guard member.

8. In a safety razor a blade seat; a handle extending from said seat, a blade having cutting edges on opposite sides thereof a clamping member to engage said razor blade rearwardly of and immediately adjacent its cutting edges tovhold place; guide elements atthe opposite ends of the said member slidably extended through the seat said members and having a slot longer than said backing member and shorter than said guard member through which the backing member may be passed.

. NICHOLAS TESTI.

said razor blade between the said member and the seat; means to secure the clamping member in

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