US109328A - Improvement in detaching-hooks - Google Patents

Description

J. A. LORD,Jr.

Detaching Boats. No. 109,328. Patented Nov. 15, 1870.

WITNESSES. lA/VE/VTOfif MPETERS, PHOTO-LITHQGRAPNER, WASH NbTON D C am-1 one JOSEPH A. LORD, JR, OF MIDDLETOWN, CONNECTICUT.

Letters Patent No. 109,328, dated November 15, 1870.

IMPROVEMENT IN DETACHlNG-HOOKS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be'it known that I, JOSEPH A. LORD, Jr., of

Middletown, in the county'oflyliddlesex and State of Connecticut, have invented a new and useful Improvement in. Boat-Detachers; and I do hereby declare the following to be a full, clear, and exact description the same, reference being had to the accompanying drawing, in which-' Figure 1 represents, in perspective, the stern of a boat suspended at the davits.

Figure 2 is a sectional elevation of the tackle-hook and detaoher.

It is frequently necessary to lower a boat from a vessel in motion, and it is well known that this proceeding often involves considerable danger if the tackle-hooks are not promptly and almost instantaneously liberated at the proper moment. In ordinary practice a man is stationed at each end'of the boat for the purpose of unbooking when the boat rests upon the water, but it is practically difitic-ult for two men so stationed to act in concert, and it has occurred that one or the other has failed and a sacrifice of life has resulted.

To avoid theseditliculties, and the consequent perils, many devices have been contrived whereby a single person, situate at or near the middle of the boat,

should be enabled to disengage both ends of the boats from their tackles at the same instant. In practice these contrivances have not provedsatisfactory on account of liability to derangement or obstruction. I have, thercfore, ini'ented an automatic device which will be certain to act at the instant the weight of the.

boat is supported by the water,.and so simple in construction that it will not be liable to derangement or obstruction, and ifderanged from any cause it may still be employed in the ordinary manner of common hooks.

My improvement is confined entirely to-the hook which is attached to the lower block of the da'vit-fall and It consists of a spring detacher retracted to admit the eye-bolt ring, and retained in that position so long as the weight of the boat rests in said hook, bu t with sufiicient power to eject said ring at the instantwhen the boat is supported by the water, and the strain upon the hook thereby relieved.

That others may fully understand the method I boat by the water.

have adopted to embody my invention, I will particularly describe it.

' In fig. 1 Arepresents the stern of a boat suspended from the davits or cranes of a vessel.

B is the stern eye-bolt, and-C its ring.

D is'the tacklc-hook, and

l), the lower block of the davit-fall.

A detacher-arm, F, is pivoted to the hookl) just below the eye of said hook, and said detacher i's drawn back or retracted when the ring C is placed in the bend of the hook, asshown in fig. 1. a

A stiff spring G is seated in a recessbehind the detacher F to throw said detacher forward instantly upon being relieved of resistance by the lifting-of the The bend of the hook is not as deep as in the ordinary hook, but it is fashioned so as to describe nearly an arc of a circle about the pivot-pin f, upon which the detacher F moves. C

The bend is sufliciently deep, however, for all purposes, and if the detacher should be disabled from any cause the hook D wouldstill be available in the ordinary way.' The spring G isretaiued in place by a lip formed on one of its ends, which engages in a corresponding recess formed in the hook or in the detacher, so that it cannotv become displaced unless broken, or by the removal of the detacher. If broken, however, the de-- tacher is easily removable and a new spring may be inserted in its place, and this may be donewithout removing the hook from its tackle, and even while -the. boat is hanging thereon.

I am aware that other automatic detaclzlng devices have been made, but I am not aware th t any such devices have been made similar in form to an ordinary hook, or capable of use as an ordinary hock, if disabled, as an automatic detacher.

Having described my invention,

What I claim as new is- I A book, D, provided with a spring-detacher, F, constructed and operating substantially in the man ner shown and described.

- J. A. LORD, JR.

Witnesses:

CURTIS Bacon, JAMES P. FAY.

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