US75955A - John mosley - Google Patents

Description

i @uitrit tetra atrat @fitter Letters Patent No. 75,9515, dated? March 24, 1868i.

IMPROVEMENT IN IOilKEfI-KNIVIIS.V

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To yALL WHOM 1r MAY contenait:

Be it known that I, JOIINMOSLEY, of New Haven, in the county of New Haven, and State of Connecticut, have invented certain new und useful Improvements in Pocket-Knives; and I do hereby declare that the following is a full, clear, and exact description thereowhich will enable others skilled in the art to make and use the sameJ reference being had to the accompanying drawings, forming part of this specification.

This-invention relatesY to certain improvements in pocketknives,whereby the same are made stronger and more durable. It co'nsists in inserting the spring -in the handle of a knife, having its backl cast with one or both of its sides, when the spring is provided with a recess to fit over a projection cast upon the solid back of the knife, as will be hereinafter more fully described.

I am aware thata patent has been granted to Homer Twitchel for a somewhat similar methodof constructl ing pocket-knives, (see No. 42,031.) His knife is made with the handle or haft cast in one piece, thus dispensingwith the use of rivetsto secure the same. The vspring is held in place by the blade, and a stud or pin cast in the handle for that purpose. `The backof the knife, however, extends only a portion of the length of the handle, tlespring occupying and forming the back of thehat't in the ordinary manner. This method of formingknife-handles is attended with some disadvantages, among which may be mentioned the time and skill required to fit the junction of the 4back and spring with a suitable smooth joint, and the care in preparing the mould, so as to cas't the studY in the right place. This form is only applicable to knives having the blade or blades at one end, and the spring-.must belarge 'and square-ended, so as'to present a square rest to the shoulder of the blade. The spring then cannot be made 4to exert so elastic and forcible a tension as when curved and tapered in the manner which my improvement permits. The dust and dirtof the pocket, also, are admitted between the sides of the spring and handle, as in the old unimproved style of knives.

By referiirig to the drawings, it will be seen that the haft in my improved knife is'cast in one or two parts, and the springs have recesses, a, formed in the middle of the back of the same, which are for itting on a pro jection, e, formed in the bottom of the haft, at a corresponding part to the recess ai In all the figures the bottom, h, of the haft forms the back of the knife, as shown. The recess, a, formed in the spring is for the purpose of keeping the same in a fixed position, thus preventingr any longitudinal displacement of itin either Adirectiomand also to serve asa point from which the tension of the 'spring' arises. A socket, r, assists in hold.

ing'the springinV position when theblades are at one end only of the knife. The springs each-are let, z', andare made tapering and slightly curvedat their points, the better to provide a firm elastic tension, as before stated, which my` improvement permits, for the square end of thebottom of the haft, as shown at n, receives and sustains the shoulder m of the blade. No skilful fitting of the spring tothe haft is required, but the parts, when formed.- by stamping-or'casting inthe required shape, can be placed together at once, a loose lit of the same being all that isdesigned, for the blades at either end, (or the blade on one end and the socket r at the other,) together with the projection c, and the blade keep the spring firm and secure. p

At Figure 1 is shown a longitudinal section of a handle castrwliolly. in one part. In this form one or more bladesican be placed at one end, the springs of each fitting on `the projection e and in the socket i', as shown. At Figure 2 is shown a modification of my improvement, which consists in having the haft or handle cast in twoparts. One part, A, is shown at figs. l and 5,-and the other part, B, is shown at Figure 5'only. The part A is the largest vand contains the projection e and bottom or back h of the handle, thus forming all but one side ofthe cavity of the handle, which is completed bythe other part B, the latter being merelya plate shaped to conform to the exterior of the handle, and having a plain surface to fit on the part A. These two parts are riveted together by vtri-o rivets, one through projection e, and the other' above the socket 1", as shown. The handles, when made in this form, can-be cast much cheaper than when made Ain one part, or they may be sta'mped,which would still lessen thei'rcost. l The principle-would still be 'the same iff the Atwo parts A and B were equal, and each one possessing a part of theback'z and its projection e, which, when brought together, wouldform the cavity of the haftand back `projection andsocket of the same. At Figure 3 is shown a handle, made in one'part, and having blades at eachend, Two rivets onlyare required to secure all the parts in work- 4ing; order. At Figure is shown u. viewof vthe back of iig. 1. Here the handle is castfin one part, and one rivet only is required.

My improvements enable me to pxjoduce a knife at once cheap and durable, and not likely to become shat-y tcred'nnd loose as to its sever'alip-arts, and, while my improved knife presents o. finished, attractive exterior, which cannot he attained in the same degree by the methods heretofore known or used, its interior working parte are perfeetv'in their operation, and within the skill of ordinary mechanics to construct.

I am aware of the English Patent, No. 1,'111, of 1856, but as it forms no part of my invention, I do net.

claim it.

Having alluded tothe patent of Mr. Homer A'.lwit-ehelQit will be evident that I do not desire to claim broadly the formation of a. knife-haft cast in one part, but

What I claim as'new7 and vdesire to secure by Letters Patent, is

The spring inserted in :1. knife-handle having its -baeli casi; with one or both of its sides, when said springA I is provided atits back with aireeess adapted to-ft without rivets over'a projection cast' in the back of thehandle,

'as herein described for the purpose specified.

The above specification of my invention signed by me,- this y31st day of Qctober, 1867.

JOHN MOSLEY.

-Witnessesz WM. F. MCNAMARA, ALEX. F. ROBERTS.

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