US68781A

US68781A - north

Info

Publication number: US68781A
Authority: US
Publication date: 1867-09-10
Anticipated expiration: 1884-09-10

Description

' @eine taies' @anni @fitta VHENRY s. NoRTrLoF MIDDLETOWN,eoNNncTioUT, AssIeNon To nnvisnnn W. DOUGLAS, AN D B. DOUGLAS, 0F THE SAME PLAGE, Leeers'parem No. 68,781, @zaad september 10, 1867.

, IMPROVBD SNAP-HOOK.

TO ALL WHOM lIT MAY GNCERN.:

Be it known that I, H: S. Nbnfrla, ci' Middletown, Middlesex county, Connecticut, have invented new and useful Improvements in Snap-Hooks`5 and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the artv to make anduse tbc same, reference being had `to tbeaccompanying drawings, forming part of this specification.

The present invention consists, rst, in extending the rear end of the movable jaw Vto the hook beyond its axis or joint for forming an arm fora spring-boit to Vpass through and lock it, whichbolt is arranged to slide in the tail end` to the fixed arm or jaw of the hook; second, in so constructing the movable jaw as to form a bearing upon it for the end of aspring suitably arranged within the fixed jaw to cause the movable jaw of the hook to close or shut; third, in so constructing the snap-hook and'arranginga spring thereinthat one and the same spring will serve to throw'the lock-bolt, and also to close the movablcjaw; fourth, in so arranging axtrdlhanging` the lock-bolt to the snap-hook that it can be drawn and held out of action, and thus enable the snap-hook to be used like the ordinary and common snap-hooks; fifth, in so arranging the bolt that when the hook-jawis locked by it the bolt can be fastened so as not to operate, and thus its unfastening by accident avoided. In the accompanying plate of drawings my improved snap-hook is illustrated- Figure l being a viewo` one edge of'v the same, and Figure 2 a central section7 taken in `the plane of the line :v :v or in the direction of its length.

Similar letters of reference indicate corresponding parts.

A, inl the drawings, represents the xed arm or jaw of my improved snap-l1ook. B, the movable arm or jaw hung upon an axis or pivot at a to the iixed jaw A. Ilhis movable arm, byts portion C,`is extended beyond its pivot, lapping over, by its piece D, the tail end to the fixed jaw. E, a bolt arranged in a suitable wayQF, of the tail portion to the fined jaw A, so as to'be slid forward or backward therein by its headed pin G projecting through the slot H in the edge of such fixed jaw A. This bolt plays through the fixed jaw alt its end where overlapped by the piece D of the extension to the movable jaw, and enters the hole I in said jaw-pieee D for' holding the sadjaw to the hook closed. J, a spiral spring arranged in cut-out portion K of the fixed jaw A,

lwherein it bears by one end against the` inner end of the bolt, and at its other against the shoulder L of. the

joint portionof the movable jaw B, and thus serves tov both throw the bolt and to swing the movable jaw and hold it closed. .The slot H is provided atv each end with a sideinotch, M M2, so that when the headed pin VGr is i swung into the one, M, it will hold the bolt out of action, and thus allow the hook 'to be usedand `to operate as an ordinary snaphook,.and into the other, M2, it will so fasten the bolt, when locked with the movable jam-as to prevent the bolt from being then accidentally` moved.

What I claim as new, and desire to secure by Letters Patent, is n l. A snap-hook, having the rear end of the movable jaw extended beyond the axisor joint, in combination with a bolt, substantially as and for the purpose described.`

2. In snap-hooks, a movable jaw, so constructed as to forma bearing for aspring arranged within the xed jaw, substantially as described and for the purpose specified. g

3. A snap-hook provided with a bolt for locking its movable arm or jaw, when such hook is so constructedV and a spring is so arranged as to both throw said bolt and to close the movable jaw.

"4. A bolt so arranged in combination with so constructing a snap-hook that it can be either secred in a yposition out of action or fastened, when looked in the movable jaw, or both, substantially asV described. V The above Vspecification of my invention signed by me this 29th day of March, 1867.

I HENRY Si. NORTH y Witnesses:

.Tous L. S. Renners,

WM. T. ELMER.