US93295A - John gardner - Google Patents

Description

anima gaat :ro-HN GARDNER, or NEWYo'ni, N. Y.

Letters PatentNo. 93,295, dated August 3, 1869.

CAPSTAN.

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

To all whom it may concern Be it known'that I, J om: GARDNER, of the city and State of New York, have invented yandV made a new and useful Improvement in Capstans; and I do hereby declare the following to be a full, clear, and' exact description 'of the said invention, reference being had to the annexed drawing, making part of this specication, wherein-- Figure 1 isa Vertical section of the said capstan, complete. y 1

Figure 2 is a plan of' the base and gearing, the barrel being removed.

Similaimarks oi' reference denote the same parts.

This invention is to furnish acapstau with increased power, by lessening thev speed when the capstan-head is revolved in one direction, and when revolved in the opposite direction, the capstan-head and barrel are connected so asto move at the same speed.

lhe present invention consists in a revolving .base-v pate, carrying gearing between the shaft and capstanbarrel, and provided with pawls, taking the base of the capstan, so that when the head ofthe capstan is connected by a pawl to the barrel, the gearing and plate revolve with the capstan-barrel, but whenthe head-is revolved in the opposite direction, the base-plate is held stationary by the pawls, while the gearing continues to revolve the capstan-barrel in the same dire'cf tion asA before, but at a much slower speed. Thus a. rope or chain can be rapidly hauled in, when under but little strain, but when the strain becomes too heavy for the ordinary purchase, the hand-spike head can he revolved the other way, and a slower and powerful movement given to the barrel, in the same direction in which it had been previously revolving.

In the drawingva. is' the base of the vcapstan, of suitable size and shape, having twopawl-beds, 2'and3, and in the ceutr'e of the base a is the vertical shaft- 11, that can turn in said base, and also inthe plate c, that carries the gudg'eons 4 and 5, of the gear-wheels d d. Upon the edges of the plate c are I p awls e, taking the pawlbed 3, and I f is a' gear-wheel, fastened upon the shaft b, taking the gears d d.

g is the capstan-barrel, with an internal gear-wheel at i, into, which the wheels d d' gear.'

The capstan-head his provided with hand-spike sockets, and is fastened, by keys or otherwise, to the shaft b.

Upon the upper surface of the capstan-barrel g lis a ratchet, at 6, and .upon'the head h, are pawls lr taking said ratchet 6, or these parts might be rev, rsed in their position.

VIt will vnow be understood that when the capstan is turned' in one direction, the pawls lr and ratchet. 6 env gage each other, and the barrel gis rotated with the head, and at the same speed, the pawls e running over the bed 3, iu the direction indicated bythe arrow,

If the movement of the head h is reversed, the pawls o' run over the ratchet 6, and the pawls e hold in the bed, while the gearing f, d d', and fi, revolves the capstan with a slower and more powerful motion, but in the same direction as before.

-The speed of the capstan relatively to that of the head will be according to the size of the gear j, in comparison to the internal gear i, the gudgeons of pinions d d remaining stationary. n

I do not claim the application of gear-wheels inthe hase of a capstan, as shown in Letters Patent No. 14,983, or in the top, -as shown in Letters Patent N o. 57,302. y

-WVhat I claim, and desire to secure by Letters Pateut, is

The plate c, carrying the gears d d', and fitted with thev pawl e, in combination with the capstan-barrel g, internal gear i, gear f, and shaft b, substantially as and for the purposes specified.

Also, in combination with the foregoing, the handspike head h, and pawls, or equivalent device for connecting the same with the barrel, for the purposes specified.

In witness whereof, I have hereunto set my signa ture, this 4th day of May, 1869.

. JOHN GARDNER. Witnesses:

GEO. D. WALKER, Gno. T. PINGKNEY.

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