US515045A - Pocket-knife - Google Patents

Description

(Normaal.) Y B. VON BULTZINGSLOWEN.

POCKET KNIFE.

Patented Feb. Z0, 1894.

ATTORNEY.

1HE NAnoNAL Llmoamwnms COMPANY WASHINGTON. o. e.

I pocket-knives, surgical instruments, and the *raras BRUNO VON BLTZINGSLWEN, OF NEW YORK, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE AMERICAN AUTOMATIC KNIFE AND NOV- ELTY COMPANY, OF BROOKLYN, NEW YORK.

POCKET-KNIFE.

SPECIFICATION forming part of Letters Patent No. 515,045, dated February 20, 1894.

Application tiled February 25, 1893.

To all whom it may concern:

Beit known that I, BRUNO voN BLTZING- SLWEN,asubj ect of the Emperor of Germany, and a resident of New York, in the 'county of 5 New York and State of New York, have invented certain new and useful Improvements in Pocket-Knives, of which the followingis a specification.

My invention has reference to improve-l io ments in pocket-knives of that class in which the blades are inserted from outside and held in position for use by a spring-acted jaw engaging a corresponding notch in the blade, and the invention consists of a handle for like, having an interior spring that presses upon a pivoted link provided with a jaw adapted to engage a corresponding notch in the blade or other instrument which is insertzo ed with its tang into the upper portion of the handle. The special construction of this haudle is more fully described hereinafter and pointed out in the claims.

In the accompanying drawings Figures l and 2 are front views of myimproved handle for pocket knives, one covering and top plate being removed in Fig. 2. Fig. 3 is a detail showing the intermediate plate for supporting the spring. Fig. 4 is a modification of 3o the handle with a knife-blade attached thereto and one covering and top-plate removed.

Fig. 5 shows a button-hook to be used with the handle illustrated in Fig. 2. Figs. Sand 7 are sections respectively on lines :icand fy-y Fig. 2. Fig. 8 is a second modification of the handle, one covering and one top-plate being removed and the connecting piece of the covering plates in section on line ,c-z

Fig. 9. Fig. 9 is a side view of such modification. Fig. 10 shows a half of the intermediate covering piece used in the handle illustrated in Fig. 8; and Figs. 1l and 12 are sections respectively on lines a-a and h-h Fig. 8.

Similar letters of reference indicate corresponding parte.

The main parts of my improved pocketknife are the intermediate plate F for supporting the spring f, the pivoted linkR upon 5o which the spring presses, the side or covering plates O and the top-plates S. The intermesaia No. 463,727. (No moa-.i5

diate spring supporting plate F has a slitf, into which the flat spring fis placed to 1mpart to the same the necessary support, and an incision parallel with the upwardly spring to allow the latter the necessary play. A further incision in the plate F, by which the narrow extension F (Figs. 2 and 3) is formed, procures the necessary space for the tang of the blade or other instrument. The spring, 6o after being placed into the slit f and reliably attached thereto, is upwardly bent. and presses with its free end against the inner side of the link R which is pivoted by means of a pivot-pin r to and between the interine- A diate covering-plates O, as shown in Figs. 2 and 6 and in Figs. 8 and ll. The outer faces of the spring-supporting plate F of the spring f and of the link R, form the side-faces of the handle. The portion of the link R, which is 7o engaged by the spring, has a hook or knob d extending beyond one of the side faces of the blade, and the other end terminates in an in wardly extending jaw n. To prevent the link R from being pressed into the handle by the action of the spring, a stop-pin g is fastened to the intermediate covering plates which pin is in contact with the said link, when no pressure is exerted upon the spring from outside, as shown in Figs. 2, 4 and '8. The So covering plates C inclose the spring f and the link R, and also theinterinediate springsupporting plate F, to which latter they are fastened by means of rivets or screws. Additional top-plates S are attached to the covering-plates O, as usual in handles for pocketknives.

The tang 7c of the knife-blade or other instrument K is provided with one or more notches n corresponding with the shape of 9o the jaw n.

rlhe intermediate spring supporting plate may consist of one piece or may be composed of the main-part F and the narrow part F. This construction is specially adapted for 9 5 light handles in which the main-piece F may be made of a lighter material for instance, aluminium. lf desired, the piece F may be entirely dispensed with. -In this case the covering plates O are made integral with the conroo necting piece O', which, together with the spring supporting plate F, forms the second side-face of the handle, and maybe made separately and soldered to the covering plates.

When the knife-bladev or other instrument is to be used with the handle, the hook or knob d of the pivoted linkR is pressed down and the upper end of the same thereby swung outside, so that the openingin the upper portion of the handle is widened, and the blade is then inserted into the said opening. rlhe hook or knob is then released from the pressure and the jaw n of the link R catches one of the notches in the tang of the blade. Of course the shape of the tang must correspond with the space formed by the extension F and the link R. When' the jaw n has a tapering form and the corresponding notches n of the blades are of a corresponding shape, as shown in Figs. 2 and 5, the blade can be inserted into the handle without pressing the hook or knob d down, as, by pushing the tang into the opening of the blade, the link will yield and the jaw catch the notch as soon as it reaches the same. When the blade or instrument is to be released from the handle, the hook or knob d is again pressed down, whereby the jaw of the link R is disengaged from the notch of the blade and the latter can be removed from the handle.

The several parts of the handle are made of metal, and the top-plates may be made of bone, mother of pearl, or any other suitable material.

My improved handle is specially adapted for surgical instruments, pocketsets of toilet articles, &c., so that one handle can be used for different knife-blades, button hooks, pincettes and the like.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a handle forl knives and other instruments, the combination of covering plates, with an intermediate plate having an incision for the tang of the blade and a slit f', a spring placed into the slit f', and an intermediate link pivoted so to the covering plates that the spring presses against the same, substantially as set forth.

2. In a handle for knives and other instruments, the combination of covering plates,

with an intermediate plate having an incisionv for the tang of the blade and a slit f', a spring placed into the slit f', an intermediate link having an inwardly extending jaw and being engaged by the said spring, a stop-pin holding the link in position, and a knife-blade or other instrument havingnotches which are engaged by the jaw of the pivoted link, substantially as set forth.

Signed at New York,in the county ot' New York and State of New York, this 8th day of January, A. D. 1893. n

' BRUNO VON BUL'IZINGSLOWEN.

Witnesses:v

ALFRED BERNHEIM, CHARLES KALP.

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