US 730025 A
Description (OCR text may contain errors)
No. 730,025. PATENTED JUNE 2, 190a.
' E. KAUFMANN.
POCKET KNIFE. APPLICATION FILED 13:0. 26, 1902 2 MEETS-SHEET 1.
I PATENTED JUNE 2,1903. E. KAUFMANN.
APPLICATION FILED D120. 28, 1902.
2 SHEETS-SHEET 2' no MODEL.
ERNST KAUFMANN, SOLINGEN, GERMANY.
Patented June 2, 1903.
UNITE STATES PATENT OFFIoE.
SPECIFICATION forming art of Letters Patent No. 730,025, dated June 2, 1903. Application filed December 26, 1902. Serial No. 136,658. (No model) To aZZ whom it may concern.-
Be it known that LERNST KAUFMANN, a subj ect of the German Emperor, residing at Solingen, Germany, have invented certain new and useful Improvements in Pocket-Knives, of which the following is a specification.
This invention relates to clasp-knives, and has for its object to provide a device ofthis nature in which the blades will be held in closed or open position and which will also be provided with means for releasing the holding means.
In the drawings formingapart of this specification, and in which like letters of reference indicate similar parts in the several views, Figures 1, 2, and 3 show in side elevation the knife respectively closed, partly open, and
fully open. Fig. 4 is a rear elevation of the open knife. Fig. 5 is'a front elevation of the 'open knife, and Figs. 6 to 10 are corresponding views of a modification.
Referring now to the drawings, between the sides or cheeks a a of the handle is mounted the blade is upon a pivot t. At the lower part of the rear edge of the blade is a notch 9, with which a hook-shaped lever'f engages, said lever being pivoted upon a cross-pin r of the handle. Within the handle is disposed a plate f, which is bifurcated to form springtongues f and f. The tongue f which is larger than the tongue f, is arranged to bear against the blade is while the latter is in closed position, thereby maintaining it in a state of tension, the blade being held against the action of the spring by the lever f. The tongue f 2 is so p0sitioned that it bears against the end of the lever f and'holds the latter in engagement with the notch of the blade 7o.
In a suitable recess provided in one of the sides a there is disposed a second lever s, pivoted on a pin y. The motion of this levers is limited by a pin as, fixed in the handle and engaged in a slot :10 in the lever. The lever s has a projection s at right angles to its rear edge, thus constituting a double-armed lever. When the lever s is moved by means of the finger-piece it upon itspivot from the position shown in Fig. 1 to that shown in Fig. 2, the projection s presses upon the lever f and forces it from the projection 19 upon the front edge of the blade 70, while the spring f causes the blade to fly open. The lever sis then turned back to its initial position and the lever f engages with the notch 19 of the blade. It will of course be understood that when it is desired to close the knife the same operation is performed, which accomplishes the same results only in reversed order.
The modifications shown in the drawings disclose a knife operating in a manner substantially the same as that just described, except that the lever 8 instead of being operated by the finger is moved by a third lever s, which also forms a part of the decoration upon the handle, the lever s lying wholly concealed within the handle. A small plate zis visible upon the outside of the knife-handle, which plate is attached to the lever s, which lies in a recess in one of the sides a, said recess joining that containing the lever 8 By reference to the drawings it will be seen that operation of the lever s will cause the lever a to move, which, through the medium of the lever f and spring f causes the blade to open.
What is claimed 1s 1. A knife comprising a handle, a blade mounted in the handle, a lever pivoted be-- tween the sides of the handle, means for holding the lever in engagement with the blade.
to hold it in its closed or open position, a second lever pivoted in the handle, having a lug formed upon one side thereof and adapted to bear upon the first lever and move it against the action of the holding means to permit of movement of the blade.
2. A knifecomprising a handle, a blade pivotally mounted in the handle, a lever pivoted between the sides of the handle and adapted to bear with one of its ends upon the blade to hold the blade in its open or closed position, a spring disposed within the handle and adapted to bear upon the lever to hold it in engagement with the blade, a second lever pivoted in the handle and having an V 7' elongated perforation therein and a lug 3. A knife comprising a handle, a blade pivotally mounted in the. handle, said blade having notches in itsedges, a lever pivoted between the sides of the handle having a hook upon one of its ends for engagement with the notches of the blade, means for disengaging the hook from the notches and a plate secured between the sides of the handle and bifurcated to form spring-tongues, one of said tongues being adapted to bear against the lever and hold it in engagement with the blade, and the other tongue be adapted to bear against the blade when in its closed position, and to move it when the holding-lever is disengaged. p
4;. A knife comprisinga handle, a blade pivotally mounted in the handle, a lever pivoted between the sides of the handle and adapted to bear with one of its ends upon the ERNST KAUFMANN.
PAUL SCHIMMELBUSCH, VICTOR W. l-IELDT.