US65450A - Henry thompson - Google Patents

Description

@prima tatw @anni @f fitr.

IMPROVED WINDLASS FOR VESSELS.

@be Stigrhrle einen tn in tiges; trtta's nttut nnb marking @mit nt tige rune.

'IO ALL PERSONS TO WHOM THESE PRESENTS SHALL COMES Be it` known that I, HENRY THOMPSON, ofiRockland, in the county of Knox, and State of Maine, have made a new and useful invention, having reference to the Windlass of 'a Navigablc Vessel; and I do hereby declare the same to be fully described in the followingspecitication, and represented in the accompanying drawings, of which- Figure 1 is a top view of a windlass provided with my invention',

Figure 2 is a front elevation, and

Figure 3 a side elevation of my mechanism, which is applied to the windlass to prevent fleeting otits chain cable, or the riding' of one coil while being formed upon the next one, a m'atter whichit is very desirable to avoid, as is well understood by mariners, serious consequences being liable te result from such an accident or occurrence.

In the drawings, A denotes an ordinary windlass, supported on bitsrl B, and provided not only with mechanism for revolving it, but with a ratchet, a, and a pawl, I1, for preventing it from turning backward under the draught on the cable H. This mechanism is of' a kind well known and in common use, it consisting of two ratehets, each of which is ixed to the windlass, and enclosed in one ot' two paul-euses C C, which embrace and turn on vthe windlass, and carry pwls to act on the ratehets. These pawl-eascs are connected by rods to a brake or lever, D, which, on being vibrated on its fulcrnm, will impart a reciprocating motion to each pawl-case, one being moved in one direction while the other is in the act of being moved in the opposite direction. In front of the windlass, and hinged to the deck E, is a standard, F, carrying a roller, c, and being connected with one of the pawl-cases hy means of a bar, d. Such barlis to be jointed tothe case and standard in such manner as to cause the pawl-case, during its movements, to impart to the standard and its roller vibratory movements, such as will force the ratchet against and away from the next adjacent coil of the cable on the windlass, the object being to crowd the coil aside a little, or to such extent as to prevent the new coil, while being laid, from overriding that so pushed aside. In order to prevent the standard from being pressed away from the windlass there is jointed to the former aud-the deel: a stay-bar, G, (see iig. 3,) which, though connected with the deck, and arranged in manner as represented, moves with Ithe standard.

I make no claim to the mechanism for revolving the windlass, as such as h'ereinbefore mentioned is well known and in common use. What I do claim as my invention, is-

The arrangement as well as the combination of the vibratory standard F and its roller c, or the equivalent thereof, with the windluss A and one of its pawl-cases C C, so as to be operated by such p awl-case, substantially in the manner and for the purpose as hcrelinbef'ore specified.

I also claim the combination and arrangement of the vibratory standard F, its roller e, or the equivalent thereof, the staylG, and the eonnection-bar d, as described, the whole to be applied to the decl: and windlass of a vessel and the pawl-case of such windlass, substantially as and for the purpose hcreinbei'ore explained.

HENRY THOMPSON.

Witnesses:

R. H. EDDY, F. I. HALE, Jr.

Images