US1521084A

US1521084A - Pocketknife

Info

Publication number: US1521084A
Application number: US643637A
Authority: US
Inventors: Maxim K Eliashevich
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-06-06
Filing date: 1923-06-06
Publication date: 1924-12-30
Anticipated expiration: 1941-12-30

Description

Dec. 30. 1924. 1,521,084 M. K. ELIASHEVICH POCKET KNIFE Filed. June 6, 1925 Patented Dec. 3639, 1924?.

rarest MAXIM K. ELIASI-IEVICI-I, OF

SAN FRANCISCO, CALIFORNIA.

POCKETKNIFE.

Application filed June 6,

To all whom it may concern:

Be it known that I, MAXIM K. ELIAsHnvIoH, a citizen of Russia, and a resident of the city and county of San Francisco, State 6 of California, have made a new and useful invention-to wit, Improvements in Pocketknives; and I do hereby declare the following to be a full, clear, concise, and exact description of the same.

This invention relates particularly to a pocket knife having a conventional type of safety razor blade therein to be used for a cutting element.

An object of the invention is to provide a 1 pocket knife, formed of an enclosed housing within which a frame having a cutting member therein, is adapted to be telescopically mounted, in conjunction with friction means on the said housing for holding the cutting 0 member frame in either an extended or concealed position.

A. further object of the invention is to form a device, such as described, and having a frame therein in which any conventional type of safety razor blade may be detachably mounted.

A still further object of the invention is to provide a pocket knife of the character described that will be superior in point of simplicity and inexpensiveness of construction, positiveness of operation, facility and convenience in use and general efficiency. Other objects and advantages will appear as this description progresses.

In this specification and the annexed drawings, the invention is illustrated in the form considered to be the best, but it is to be understood that the invention is not limited to such form, because it may be embodied in other forms, and it is also to be understood that in and by the claims following the description, it is desired to cover the invention in whatsoever form it may be embodied.

In the accompanying one sheet of drawings,

Fig. 1 represents a perspective view of a pocket knife constructed in accordance with my invention, and showing the cutting member in an extended position.

Fig. 2 is a plan view of the frame for holding the cutting member and showing the retaining means partially withdrawn.

Fig. 3 is a cross-section taken through Fig. 1 on the line 33.

Fig. 4 is a plan section of the under side 1923. Serial No. 643,637.

of the knife sheath and cutting member frame in assembled position.

Fig. 5 is a longitudinal section taken through Fig. 1 on the line 5-5.

Fig. 6 is a view similar to Fig. 5, showing the friction bottom, in reversed position.

Fig. 7 is a cross-section through Fig. 6 on the line 7-7.

Fig. 8 is a View of the underside of the friction bottom.

In detail, the construction illustrated in the drawings includes a sheath or housing 1 substantially rectangular in cross-section and formed from light-weight sheet metal, cardboard, or the like. One end of the sheath 1 is closed as at 2, and the opposite end is open to receive a frame member 3 for supporting a cutting element, which is adapted to be telescopically confined within the interior of the sheath 1.

The frame member 3 is of a slightly greater length than the interior of the sheath 1, whereby the end of the frame 3, which projects beyond the end of the sheath 1, is provided with a depression 4 therein, to afford agrip to the fingernail for withdrawing the frame member 3 from the sheath. 'ihe opposite end 5 of the frame member 3, within the sheath 1, is approximately of the same cross-section as the interior of the sheath, to guide said frame member when moved in or out of the said sheath.

One of the sides of the frame member 3 is provided with a milled depression 6, eX- tending longitudinally for practically the full length thereof. A. flat disc member 7 is confined within the interior of the sheath 1 and said disc registers with the depression 6. The disc 7 is substantially of the same contour as that of the depression 6, whereby the frame member 3 may be freely moved past the disc 7. The disc 7 is supported within the interior of the sheath 1 on a shaft 8 extending outwardly through a hole 9 in the sheath. A small handle 10 is provided on the outer end of the shaft 8 and a rubber collar 11 is interposed between the handle 10 and outer face of the sheath 1 which acts to confine the disc shaft in a relatively loose operating position and at the same time hold the corelated parts together to eliminate rattle and loose play. By moving the disc 7 through an arc of 90 degrees, from the position shown in Fig. 5 to that shown in Figs. 6 and 7, it will be obvious that the disc 7 exerts afriction or cam action, between the face of the depression 6 and the inside face of the sheath 1. Thus when the disc 7 is placed in the position shown in Fig. 5, the frame member 3 may be freely moved in and out of the sheath 1, and by turning the disc 7 to create a friction on the frame member 3, the said frame member may be fixedly maintained in a concealed or extended position.

The frame member 3 is provided with a cavity 12 in its face opposite to that having the cavity 6, Within which are integrally formed a plurality of projections 13. A safety razor'blade 1 1, of any conventional type is adapted to fit snugly within the cavity 12, whereby the apertures in said blade will register with the projection 13 in the said'cavity 12. v The edge walls 15 of the cavity 12 are dove-tailed to receive the dovetailed edges of the cover or retaining member 16, adapted to fit within the cavity 12 and to lock the cutting member 14, securely therein, against dislodgment. The underedge of the frame member is beveled at 18, adjacent the cutting member 14, and similarly, the face of the closure 16 is beveled at 17, in order to provide a sharpened approach to the edge of the cutting member 14. It will be obvious that the closure 16 might be removed from the frame member 3 and cutting blades 14 interchanged in the event that constant usage would dull or otherwise impair the working edge of any blade contained therein.

Having thus described this invention, what I claim and deire to secure by Letters Patent is:

1. A knife comprising a sheath; a frame and detachably engage said projections; a

slide to cover said depression to position said blade on said frame; and a manually operable cam on said sheath. to frictionally en gage said frame in the concealed and eX- tended positions.

3. A knife comprising a sheath; a frame, telescopically confined within said sheath, having a depression with-projections therein; a razor blade to .fit in said depression and detachably engage said projections; and a cover, slid-ably engaging said frame, to partly conceal and hold said blade therein.

1. A knife comprising a sheath; a frame, telescopically confined within said sheath, having a depression with projections therein; a razor blade to fit in said depression and detachably engage said projections;

a cover, slidably engaging said frame, to V partly conceal and hold said blade therein; and a manually operable cam on said sheath to frictional-1y engage said frame in the concealed and extended'positions.

- In testimony whereof, I have hereunto set my hand at San Francisco, California, this 26th day of May,'1923.

MAXIM K. ELIASHEVIOH. In presence of LiNooLN JonNsoN.