US1016344A

US1016344A - Safety-razor.

Info

Publication number: US1016344A
Application number: US62220311A
Authority: US
Inventors: John A Makarhof
Original assignee: F R BELT; GEORGE A BAIRD
Current assignee: F R BELT; GEORGE A BAIRD
Priority date: 1911-04-20
Filing date: 1911-04-20
Publication date: 1912-02-06
Anticipated expiration: 1929-02-06

Description

J. A. MAKARHOF.

SAFETY RAZOR. APPLICATION FILED Ammo, 1911.

Patented Feb. 6, 1912.

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UNITED STATESPATENT OFFICE.

JOHN A. MAKARI-IOF,OF CHICAGO, ILLINOIS, ASSIG-NOR, BY DIRECT AND MESNE ASSIGNMENTS, OF FORTY-NINE ONE-HUNDRED'II-IS TO F. R. BELT AND FIFTY-ONE ONE-HUNDREDTI-IS TO GEORGE A. BAIRD, BOTH OF CHICAGO, ILLINOIS.

SAFETY-RAZOR.

Specification of Letters Patent.

Patented Feb. 6, 1912.

To all whom it may concern:

Be it known that I, JOHN A. MAKARHOF, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Safety-Razors, of which the following is a specification.

This invention relates to safety razors and aims to produce a device of this character which shall be simple in construction, cheap to manufacture, which shall be strong and durable and which will hold the blade firmly in cutting position so that no vibration of the blade on its holder will take place when the device is being used. I

The following description when read in connection with the accompanying drawings illustrating one preferred form of my invention, will-be sufficient for an understanding of the structure, the mode of operation and many of the desirable features thereof.

Referring to the drawings: Figure 1 is a sectional elevation taken on the line 1-1 of Fig. 2; Fig. 2 is a plan view; and Fig. 3 is a rear view of a razor embodying my invention; and Fig. 4. is a detail perspective view of the base member of the device.

On the drawings, 5 designates the base member which has a flat upper surface, the forward end of the member being upturned to form the guard 6 and being provided with a transversely extending slot 7 through which the cutting edge of the blade 8 dis posed on the fiat face of the base member, projects. The bottom of the base member is preferably curved upwardly near its forward end to permit the cutting edge of the blade to be disposed at the proper angle and the rear edge of the member is preferably cut away as indicated at 9 to enable the rear edge of the blade to be grasped by the fingers and removed from operative position. Suitable studs or lugs 10 project up wardly from the rear edge of the member behind the blade to prevent the blade from sliding backward on the member and. the ends of the groove 7 are preferably inclined as indicated at 11 to cooperate with the similarly inclined forward corners of the blade to' prevent the cutting edge thereof from projecting too far through the slot.

The sides of the base member are provided with upstanding ears or projections 12 perforated to receive a bearing pin or rod 13 upon which is pivotally mounted a cam 14:. A handle 15, preferably constructed integrally with the cam, provides a means whereby the cam may be turned on its pivot to bring its face into engagement with the upper face of the blade to clamp the blade in position between the base member and the cam. It will be evident that when the handle is turned backwardly or to the left, viewing Fig. 1, the cam will be released from engagement with the blade to permit the blade to be lifted out over the lugs 10 and withdrawn for the purposes of sharpening or cleaning the same.

In order that the blade may be tightly clamped and held adjacent its cutting edges to prevent the blade from vibrating on the base member when the device is being used,

I have provided a locking shoulder 16 preferably integrally constructed with the cam and with the handle and adapted when the cam is forced into locking position, as shown in Fig. 1, to engage the blade adjacent its cutting edge and clamp the same firmly against the base member. By this construction the blade is clamped and tightly held throughout its length by the cam 14: and is furthermore clamped and held against vibration adjacent its cutting edge by the locking shoulder 16. When the handle is moved into the position shown in Fig. 1, to lock the blade on the base member, the razor is ready to be used, when it is desired to remove the blade or to insert a new one, the handle is simply turned backwardly to release the cam and the locking shoulder from engagement with the blade whereupon the blade can be readily removed and another inserted in its stead.

It will here be explained that the base member 5 together with the upstanding ears 12 constitute a seat for the reception of the blade, the upper side of the seat being open so as to permit of the periphery of the cam 14 working through said open side of the seat into engagement with the blade so as to press the latter against the back of the seat.

It is believed that the invention and many of its advantageous features will be understood from the foregoing without further description and it will be obvious that various minor mechanical changes in the size,

shape, proportion and arrangement of the .or sacrificing any of the material advan tages thereof.

I claim:

1. A safety razor comprising a base member provided with a seat having one side open, a rotatable cam mounted upon the base member between the front and rear thereof and extending from side to side of the base member with its axis disposed parallel to the cutting edge of the razor blade, the periphery of the cam working through the open side-of the seat in position to engage the blade and press the same against the back of the seat, and a handle for manipulating the device carried by the cam, substantially as described.

2. A safety razor comprising a base mem ber provided with a seat having an open side, a guard extending across the front of the seat, ears upon the body at opposite sides of the seat, a cylindrical clamping member having its axis disposed in substantial parallelism with the guard and its ends eccentrically mounted in the ears, the periphery of the clamping member working through the open side of the seat in position to press a blade and holdrthe same against the back of the seat, and a handle for manipulating the device carried by the clamping member, substantially as de scribed.

3. A safety razor comprising a base member provided with a seat having one side open, a rotatable cam mounted upon 'the base member between the front and rear thereof and extending from side to side of the base member with its axis disposed parallel to the cutting edge of the razor blade, the periphery of the cam working through the open side of the seat in position to engage the blade and press the same against the back of the seat, a handle for manipulating the device carried by the cam,

and a brace member movable with the clamp- Copies of this patent may be obtained for the seat, ears upon the body at opposite sides of the seat, a cylindrical clamping member having its axis disposed in substantial parallelism with the guard and its ends eccentrically mounted in the ears, the periphery of the clamping member working through the open side of the seat in position to press a blade and hold the same against the back of the seat, a handle for manipulating the device carried by the clamping member, and a brace member movable with the clamping member and disposed in position to lie against the blade between the clamping member and the cutting edge of the blade to prevent vibration of said cutting edge, substantially as described.

5. A safety razor comprising a base member provided with a seat having an open Side, a guard extending across the front of the seat, a rotatable cam mounted upon the base member between the front and rear thereof and extending from side to side of the base member with its axis disposed substantially parallel with the guard, the periphery of the cam working through the open side of the seat in position to engage a blade and press the same against the back of the seat, and a handle for manipulating the razor carried by the cam, said handle being disposed at an acute angle with respect to the forward portion of the base member and extending in front of the guard in the clamped position of the handle, substantially as described.

JOHN A. MAKARHOF.

Witnesses:

IRA J. WILSON, G. E. HOLMES.

five cents each, by addressing the Commissioner of Patents,

Washington, -D. C.