US1312390A - Saeety-razor - Google Patents

Description

1. B. DE MESOUITA.

SAFETY RAZOR.

APPLucMloN FILED MAR.3|.1915.

L31290. Patented Aug. 5, i919.

Eig. z

W. Ufa/M 'mE :cLunmlA PLAHQGIIAPH co4. WASMNGTON, D, c.

UNiTED STATES PATENT enteren.

JULI'US BUENO DE MESQITA, OF BROOKLYN, NEW' YORK.

SAFETY-RAZOR.

Specificationof Letters Patent.

Fatented Aug. 5, 1919.-

Application lcd March 31, 1915. Serial No. 18,295.

exact description of the invention, suchlas will enable others skilled in the art to which it appertains to make and use the same. Y

This invention relates particularly to cer- Y tain improvements in the blade retaining clips of safety razor frames, and also to details of construction of the cap or cover plate for the blade.

The essential objects in view are the effective gripping of the blade regardless of variations in thickness of the parts, and the facilitating of manipulation of the cap.

With these and further objects in view, as will in part become apparent and in part be hereinafter stated, the inventionV comprises certain novel constructions, combinations and arrangements of parts as subsequently speciiied and claimed.

In the accompanying drawing:

Figure 1 is a plan view of a razor embodying the features of the present invention.

Fig. 2 is an edge view thereof.

Fig. 3 is a longitudinal section taken on the plane indicated by line 3-3 of Fig. 1 and looking in the direction indicated by the arrows.

Fig. 4 is a transverse section taken on the plane indicated by line lf- 4C of Fig. 1. Y

Fig. 5 is a detail perspective view of the spring strip detached.

Fig, 6 is a transverse section taken on the plane indicated by line 6-6 of Fig. 5.

For the'sake of clearness of disclosure, the parts have been shown on a very much enlarged scale beyond the actual physical structure as ordinarily constructed for use.

Referring to the drawing by numerals, 1 indicates the handle of fa razor frame, detachably connected to the back plate 2 of the frame, which carries the blade supporting late 3, terminating in the safety guard 4. Xt the rear edge, plate 3 is formed with eyes 5, in which is hinged the cap or cover plate 6. A spring 7 is fiXed to the back plate 2 and has a free end portion disposed in the path of movement of a rigid tab 8 preferably formed integral with the cap 6 and disposed to engage the spring 7 for springing the cap to and retaining it in a closed position, and for swinging the cap to an open position when being opened. A spring 16 is fixed to the rear pendant or flange portion of the cap plate and is provided with free arms adapted to engage and press forwardly a blade resting on plate '3. The cap plate 6 is provided at each end with a terminal closing iiange 9, the plate proper being disposed when closed to extend from its rear edge flange forwardly to the front edge of the plate so that the terminal iianges 9 taper forwardly. Adjacent the forward end of each flange 9, the material of the flange isV formed with a laterally eX- tending lip or gripping lug 10, preferably stamped from the material of the flange as best seen in Fig. 2 so that when the operator wishes to swing the cap plate 6 from its closed position to its open position, he can do so readily by grasping the cap endwise between the thumb and one of the fingers, the lug or projection 10 at one end being engaged by the thumb, .and that at the other end being engaged by the finger. As the cap often must be opened while more or less moist and sometimes coated with soap, the lugs or projections 10 are very desirable as effective means for enabling manual swinging of the cap on its hinge.

ln the construction of what is known as wafer blades difficulty has been experienced in obtaining blades of uniform thickness and perfectly flat, and occasionally where this type of blade is provided with a folded backing strip, the amount of irregularity in the matter of effective thickness in applying the blade to a razor frame is augmented. Accordingly, difficulty has been eX- perienced in retaining razorblades in, place even though spring clips have been employed designed to respond to irregularities and still efect a gripping action on the blade. To accomplish the best results in the easiest manner and with a characteristically inexpensive apparatus, l find that blade engaging clips should be employed having a certain amount of freedom for bodily movement in addition to the capacity for further movement under spring tension.

Plate 3near its forward edge, is provided with detent lugs 11, 11, disposed to be engaged by the razor blade 12 for retaining the blade against forward movement and for coperating with the spring 16 in hold- :LLA

ing the blade in operative position. Plate 3 is provided at its ends with notches 13, 13, and a strip of spring material forming a spring body 14 is arranged with its end portions bent through the notches 13 to form blade engaging clips 15, the body of the spring 14 extending beneath the plate 3 and the end portions being formed into upwardly extending hooks. in Fig. 6, each clip 15, formed by the respective hook, has its under face slightly inclined to correspond substantially with the inclination of the upper face of razor blade 12. The springI body 1st is not fixed to plate 3 but is held in place by the engagement of the hook ends 15 with notches 13, the body being formed at its intermediate portion with an upward oifset 111 so that the said offset may rest against the under face of plate 3 while the end portions are spaced therefrom and are left free for spring action in addition to which the member or body 111 as a whole is capable of a certain amount of bodily shifting both vertically and longitudinally. lThus the clips 15 accommodate themselves to and effectively grip any blade engaged thereby regardless of variations in relative thickness.

The cap 6 being in the open position, the razor blade 12 is placed flatwise against the rear portion of plate 3 and is slid forward beneath the clips 15 until the front edge of the blade strikes the detent lugs 11, and then the cap 6 is swung to its closed position and there retained by the engaging spring 7 so'.

that the blade is firmly retained against edgewise movement by the lugs 11V at its front edge and the spring 16 at its rear edge, and is held against lateral, that is vertical, movement by the engagement of the end portions 6', 6, of the front edge of cap 6 with the front portion of the blade and the engagement of clips 15 with the ends of the blade at intermediate points thereof. The intermediate portions of the front edge of cap 6 are spaced slightly above the blade, say from one t0 two thousandths of an inch, so as to avoid any undesirable deflectionof the blade. rlhe blade 12 in being applied and pressed Vforward to its final position, when passing under the clips 15, elevates the same until the free play or bodily movement of the spring member 111 is taken up and theupwardly bent portion 14: is caused to strike the under face of plate 3, and then the further movement of the blade to position is effected with a continued con'ipensating As best seenl springing action of theend portions of the spring body 14.

Whatl claimis# 1. The combination with a razor frame, of a spring comprising a strip of material extending across the under face of the razor frame and having an upwardly offset portion between the ends of the razor frame up standing in 'position to engage the under portion 0f the razor frame and leaving end portions of the strip" spaced from the frame and freelfor vibration, the end portions of yieldably engaging a razor blade iitted to the frame.

3. The combination with a razor frame formed with a notch at each end, of a spring plate extending across the frame therebe-- neath and having terminal portions bent about the ends of the frame and through the notches for forming blade 'engaging clips above the frame,the terminal portions being of greater length than the depth of the,V notches to retain the spring plate on the frame, and the spring plate being formed with an intermediate offset portion` extendingupwardly toward the frame to free the ends of the spring for iie'xing and binding the blade to the frame.

4f. In a safety razor, the combination with a frame, of a cap plate for the razor blade sustainedby the frame, the cap plate having pivotal connections with the frame at its rear portion and disposed for having the end portions of its front edge engage a blade sustained by the frame for preventingdislocation thereof, intermediate portions of the front edge of said cap plate beingV spaced from the blade to prevent iiexing of the cutting edge of the blade by the cap plate.

In testimony whereof I affix my signature in presence of two witnesses. y

JULIUS BUENO Dn MESQU1TA."' Witnesses: f

IRviNe M. EIsnNxorF, HENRY GRUBER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

Images