US145873A - Improvement in means for chocking and securing boats - Google Patents

Description

- r. M. HuwEs. Means for -Chooki'ng -andwSacur-ing Boats.

l Pam-md Dec. 23, 1873 Wilnesessl' f @i @mw m Invemgr:

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- Attorneys.

UNITED STATES PATENT OEEIcEo FRANCIS M. HOWES, OF SOMERVILLE, MASSACHUSETTS.

IMPROVEMENT IN MEANS FOR CHOCKING AND SECURING BOATS.

Specification forming part of Letters Patent No. 145,873, dated Decembz-r 23, 1873; application filed October 30, 1873.

To all whom it may concern:

Be it known that LFRANcIs M. HowEs, of

ASo1nerville,.in Vthe county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Boat-Gripes and Crane-Keepers; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing forming a part of this specification, in which- Figure l is a cross-section in line a* .fr of Fig. 3. Fig. 2 is a cross-section in line y y of Fig. 3. Fig. 3 is a portion of a side elevation. Fig. 4 is a detail view. y

The invention will first be fully described, and then pointed out in the claim.

'A A represent, respectively, the upper and lower deck of a steamer, ship, or vessel; and a a, the outer edges thereof. On the upper surface of deck A, on each side, is usually located two pairs of chucks, C, between which the bottom of a boat, D, is made fast by overlapping chains, ropes, or similar devices. I dispense with one of each pair of these chucks C, as Vshown in the drawing, and use gripes, consisting of the lever F, having the end-bent clamp F1 and the chain F2, both attached to a projection, f, of the lever F. The chain F2 has a hook, f2, which fastens over the upper edge of boat side, and the lever is held down by an arm, g, of a shaft, g', that is operated by a lever, Gr. j" is a hook, on which the pivoted clamp F1 rests and is supported when the boat is made fast on deck. The upper surface of base-piece I is, preferably, somewhat lower than the end c of chuck, so that, if the boat should slightly fall by the slack of hoisting-ropes J, the keel of the boat will not drag l thereover, but pass clear, and without any unnecessary friction. K is the ordinary fall and tackle, and L L the ordinary boat-davits, vibrated in steps l and guides Zl. The davits are connected by a bar, L', and have each two pronged side studs Z2, by which the hoistingropes are secured and held. M M are screwbolts, having the smooth-pointed end pivot m, the middle mi, and the eye-head m2. The point m forms the journal, around which turns the bearing ofthe connecting-bar L. The thread m1 receives a nut, n, that fastens the bolt to the rod L', and the. eye-head receives the hook of upper pulley-block of the tackle. Vhen the rods L are turned, and the Aboat thrown out beyond the deck, the rods are iirinly secured, and the boat held conveniently above the water. For this purpose, a pulley, O, is keyed to one of the davits L, and wound around it is a iexible metallic compressionband, P, which is fastened at 011e end, by a link, to the deck, and at the other to a chain, Q, that passes up through the deck and is attached to a cam-lever, It. By hinging the most eccentric portion of the lever R against the upper surface of deck, or on ay plate, r, the band locks the shaft L so that itv cannot turn in either direction, and thus enables the boat to be lowered.

Having thus described my invention, what l claim as new, and desire to secure by Letters Patent, is-- The lever F provided with pivoted clamp F1 and hook-chain F2, in combination with sin gle chucks C, as and for the purpose described. l

` F. M. HOWES.

IVitnesses EDWARD J. HoDeDoN, A. R. DoANE.

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