US1653105A - Safety razor - Google Patents

Description

Dec. 20, 1927. 1,653,105

J. L. KING SAFETY RAZOR Filed Deo. 6. 1924 61H01 new Patented Dec. 20, 1827.

UNHTED STATES JOHN L. KING, OF BALTIMORE, MARYLAND.

SAFETY RAZOR.

l Application led December 6, 1924. Serial No. 754,401.

This invention relates to safety razors and more particularly to such a device employing a blade adapted to be reciprocated in a line parallel to its cutting edge to provide a shearing cut.

An important-object of the invention is to provide a device of the above mentioned character having novel means for recipro` eating the blade Awhereby the latter is adapted to cut with a shearing motion.

A further object of the invention is to provide a roller adapted to contact with the skin to be revolved thereby to inlp'art a shearing action to the blade, novel means being provided for rotatably supporting the roller.

A further object of the invention is'to provide means for regulating the cut of the blade by means of a guard adjustable toward and away from the cutting edge of the blade.

Other obj ects and advantages of the invention will be apparent during the course of the following description.

In the drawings I have shown several embodiments of the invention. In this show- 111g,

Figure 1 is a front elevation of the device,

Figure 2 is a side elevation,

Figure 3 is an enlarged side elevation of the frame and associated elements,

Figure 4 is a plan view of the device open with the blade removed,

Figure 5 is a section taken on line 5 5 of Figure 1,

Figure 6 is a detail perspective of the blade and operating lever therefor,

Figure 7 is a detail perspective of a portion of the frame and associated elements,

Figure 8 is a detail perspective of the guard, and

Fi re 9 is a detail perspective of a modified orm of guard.

Referring to the drawings the numeral 10 .designates a frame as a whole which is generally rectangular in shape and is provided with a rearward extension 11 having a depressed internally screw-threaded portion 12. A handle 13 has a portion adjacent its upper end threaded as at 14 for reception within the screw-threaded opening in the frame as will be obvious. The handle 13 is provided at its upper end with a substantially axial extension 15 preferably formed as a screw driver for a purpose to be described.

edge with preferably integral upstanding arms 16 each of which is provided with a rearwardly opening slot 17. A roller 18 is arranged between the arms 16 as clearly shown. The roller 18 is preferably corrugated to form an eiiicient rolling contact with the skin of the user and each end 0f the roller is provided with an axial stub shaft 19 adapted to be arranged in the slot 17 and corresponding in ydiameter thereto. The roller 18 is provided preferably centrally thereof with a serpentine groove 20. An operating lever 21 is pivotally connected as at 22 with the rearward extension 11 of the frame and is provided intermediate its ends with a pin 23 upstanding therefrom' and arranged within the groove 20. The forward end 24 of the lever 21 is adapted to engage a razor blade to impart a reciprocating motion thereto in a manner to be described.

The uppery face 25 of the frame 10 is pro-` vided with small upstanding knobs 26 upon which the blade is adapted torest as will become obvious. The central portions 27 of the framelO are depressed between the projections 26 as clearly shown in Figures 4 and 5. A pair of elongated alined projections 28 are arranged on the frame 10 near opposite edges of the upper face thereof as clearly shown in Figure 4. The numeral 29 designates a razor blade having a forward cutting edge 30.- The rear edge of the blade is provided with a cutout portion 31 in which the forward end 24 of the lever is adapted to be arranged when the blade is in position. The blade is adapted to be arranged on the upper face of the frame 10 and is pro-vided in opposite ends with slots 32 adapted to receive the elongated depressions 28. When the blade is in position it The frame 10 is provided adjacent its rear` will be obvious that it is adapted to be sup e ported by the projections 26.

-A retaining clamp 33 is adapted to enga-ge the upper face of the razor bladel to maintain it in position. The retaining member is provided at its rear edge with arms 34 having forwardly opening slots 35 therein. These slots are equal in width to the diameter of the stub shafts 19 and are adapted be obvious that the blade is engaged on opposite sides b the projections 26 and 36 and is adapte 'to slide therebetween. The

j retaining member 33 is further provided with a central lug 37 which is adapted to be arranged in the central slot 38 in the razor blade. As shown in Figure 4, the retaining member 33 is provided in opposite ends with cutout portions 37 adapted to receive the projections 28 when the retaining member is in closed osition. Lips 39 extend from opposite endg ofthe retaining member to facilitate the opening thereof when it is desired to remove or replace the blade.

Referring to Figures 3 and 7, the numeral 39 designates as a whole a resilient member having its forward end arranged beneath the frame 10 and adapted to be secured thereto by screws 40 or the like. The member 39 is provided adjacent each end of its rear edge with a pair of resilient arms 41 and 42. Each of the arms 42 is adapted to engage a cam 43 projecting rearwardly from the retaining member 33. It will be obvious that the sprin 42 is adapted to hold the retaining mem er in engagement with the blade when the device is in position shown in Figure 3 and is adapted to engage the forward portions of the arms 34 to hold the retaining-member in open position when it is desired to remove or replace the blades. Each of the arms 41 is arranged adjacent one of the slots 17 formed in the arms 16.

The frame 10 is provided adjacent each forward corner with an apertured arm 44 as clearly shown in Figures 1 and 7. A guard roller 45 is arran ed between the arms 44 and one end of t e roller is provided wtih a longitudinally extending eccentric pin adapted to be arranged in the opening in one of the arms 44. The opposite end of the roller is provided with an eccentric opening 47 arranged in alinement with the pin 46. A screw 48 is adapted to be arranged in the opening in the opposite arm 44 and to engage in the opening 47. In Figure 8 of the drawings, I have shown a substantially cylindrical guard but the latter need not be circular in cross section. In Figure 9 I have illustrated a modified form of guard. As shown I provide in this form a guard 49 which is substantially triangular in cross section and is also provided with an eccentricppin 50 adapted to be arranged in the opening in one of the arms 44. The opposite Vend of the guard 49 is provided with an o ening (not shown) similar to the opening 4 to receive the pin 48.

The operation of the device is as follows: The blade 1s arranged in position on the frame wlth the projections 28 engaging the lcauses the latter to revolve.

slots 32. The retaining member 33 is then closed with the pin 37 engaging in the central slot 38. If desired the guard maybe adjusted according to the closeness of the shave desired by individual users. The handle may be unscrewed from the frame and the screw driver end 15 thereof employed for loosening the screw 48. The guard then may be revolved to any desired position and the screw 48 tightened. The handle is then replaced in position as shown in Figure 5. l/Vhen in use the razor is moved in contact with the skin in the usual manner and the engagement of the roller 18 against the skin The engagement of the pin 23 in the serpentine groove 20 causes the forward end 24 of the lever 21 to oscillate. Since the forward end of the lever is engaged in the slot or cutout portion 31 it will be obvious that the blade will be reeiprocated in a line parallel to its cuttingY edge thus causing a shearing action of the blade. The central portion of the frame is depressed to prevent any binding action between the blade and frame if the former becomes warped or bent in any manner. The projections 26 and 36 are adapted to support the blade and these projections are preferably provided with smooth polished faces to reduce the friction between the projections and the blade so that the latter may reciprocate freely.

With the construction shown and described it has been found that the various structural elements may be easily and quickly assembled and disassembled. In assembling the device the roller 18 is first arranged with the stub shafts 19 above and between the arms 16 and springs 41. The roller is then pressed downwardly forcing the springs 41 outwardly until the stub shafts slide into the open ends of the slots 17. The retaining member 33 is then arranged with the slot 35 projecting in substantially the opposite direction to that shown in Figure 3 and is then moved rearwardly to place the stub shaft 19 within the slot 35. With the stub shafts in the deeper portions of the slots 35, the retaining member is then. swung over to `the osition shown in Figure 3, the cam portions 43 forcing the springs 42 rearwardly to permit the swinging movement of the retaining member. It will be obvious that the pressure in the s rings 42 projects the retaining member 'orwardly so that the shaft 19 will be arranged in the deepery portions of the slots 35 and this forward pressurealso maintains the shaft 19 in the Vdeeper portions of the grooves 17 Thus it will be seen that the stub shafts will be securely held in position and yet ermitted to revolve freely.

It is to be un erstood that the forms of my invention herewith shown and described are to rbe taken as preferred examples of- CII the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims. Y

Having described my invention, I claim:

l. A safety razor comprising a frame having a pair of arms provided with alined slots, a roller mounted between said arms and provided at its ends With stub shafts arranged in said slots, means for retaining said stub .shaftsin said slots, a blade arranged on said frame, and meansconnected between said roller and said blade for reciprocating the latter in a line parallel to its cutting edge when said roller is revolved.

2. A device constructed in accordance with claim 1 wherein said retaining means for the stub shafts comprises springs carried by said frame and having free ends arranged adjacent the open ends of said slots. Y

Y3. A safety razor comprising a frame provided adjacent its rear edge with a pair of spaced upstanding arms having alined slots therein, a roller mounted between saidv arms and provided with axial stub shafts projecting through said slots, a retaining member arranged over said frame and provided with arms having apertures receiving said stub shafts, a blade arranged between said frame and said retaining member, connections between said roller and said blade for reciprocating the latter in a line parallel to its cutting edge when said roller is revolved, and resilient means engaging said retaining member and adapted to maintain said stub shafts in said slots.

4. A device constructed in accordance with claim 3 wherein said resilient means comprises a spring carried by said frame and having portions engaging against the arms of said retaining member opposite the open ends of said slot.

5. A safety razor comprising a frame having a pair of spaced upstanding arms adjacent its rear edge provided with open ended slots, a member arranged between said arms and provided with stub. shafts projecting through said slots, a blade arranged on said frame, a retaining member normally arranged over said blade, said retaining member having upstanding arms arranged adjacent the arms of said frame and provided with open ended slots extending in a different direction from said iirst named slots and receiving portions of said stub shafts. and means carried by said frame and engaging said retaining member for retaining said stub shafts in the inner ends of said` slots.

6. A device constructed in accordance with claim 5 wherein the means for retaining the stub shafts in the inner ends of said slots comprises a member secured to said frame and provided with a pair of resilient arms each contacting with one of the arms of said retaining member opposite the open end of the slot therein.

7. A device constructed in accordance with claim 5 wherein the means for retaining the stub shafts in the inner ends of said slots comprises a member secured to said fra-me and provided with ya pair of resilient arms eac-h contacting with one of the arms of said retaining member .oppositeY the open end of the slot therein, said last named member being further provided lwith .a pair of resilient arms eacharranged adj acentthe open end of the slot in one end ofl each arm of said frame. v

8. A safety razor comprising a frame having a pair of spaced upstanding arms adjacent its rear edge provided with alined rearwardly opening slots, a member arranged between said arms and provided with stub shafts proje ting through said slots, a blade arranged on said frame, a retaining member normally arranged over said blade, said retaining member having upstanding arms arranged adjacent the arms of said frame and provided with forwardly opening slots receiving portions of said stub shafts, and a spring member secured to said frame and provided adjacent each end with a pair of resilient arms, one resilient arm of each pair being arranged adjacent the open ends of the slots in the arms of said frame, the other of said resilient arms bearing against the arms of said retaining member rearwardly thereof.

9. A device constructed in accordance with claim 8 wherein the member arranged between said arms comprises a roller, and means connected between said roller and said blade for reciprocating the latter in a line parallel to its cutting edge when said roller is revolved.

10. A device constructed, in accordance with claim 8 wherein the member arranged between said arms includes a roller portion provided in its surface with a continuous serpentine groove, and operatin means oonnected between said blade an said groove for reciprocating said blade in a line paralle l to its cutting edge when said roller is revolved.

11. A device constructed in accordance with claim 8 wherein the member arranged betweenV said arms includes a roller portion provided in its surface with a continuous serpentine groove, and a lever pivotally connected intermediate its ends to said frame and provided at one end with a portion arranged in said groove, the opposite end of said lever engaging a portion of said blade to reciprocate it in a line parallel to its cutting edge when said roller is revolved.

l2. A safety razor com rising a frame, a retaining member arrange over said frame,

the adjacent faces of said frame and said retaining member being provided with a plurality of projections extending beyond the faces of the frame and retaining member, a blade arranged between said frame and said retaining member and resting upon the projections thereon, and means for reciprocating said blade in a line parallel to its cutting edge.

13. A device constructed in accordance with claim l2 provided with a pair of guide members arranged in a line parallel to the cutting edge of said blade, saidblade being d rovided with slots to receive said Huide the cutting edge of said blade, and means or securing said guard in adjusted positions.

15. A safety razor comprising a frame provided at opposite ends of its forward edge with forwardly projecting arms provided with alined openings, a blade arranged on said frame and having its cutting edge arranged adjacent the forward edge thereof, and a guard mounted between said arms, said guard having eccentric alined projections at its ends arranged in said openings.

16. A safety razor comprising a frame provided at opposite ends of its forward edge with forwardly projecting arms'provided with alined openings, a blade arranged on said frame and having its eutting'edge arranged adjacent the forward edge thereof, a cylindrical guard arranged parallel to the cutting edge of the blade and provided at one end with an eccentric pin arranged in the opening in one of said arms, the opposite end of said guard being provided with a threaded opening in alinement with said pin, and a screw mounted in the opening in the other of said arms and adapted to engage in the opening in said guard.

In testimony whereof I aflix my slgnature.

JOHN L. KING.

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