US63917A - Improved - Google Patents

Description

UNITED STATES PATENT QEEICEm JOHN S. MCMILLIN, OF PITTSBURG, PENNSYLVANIA.

IMPROVED APPLICATION OF STEAM-POWER TO TH CAPSTANS 0F VESSELS.

Specification forming part of Letters Patent No. 63,917, dated April 16, 1867.

To all whom it may concern:

Be it known that I, JOHN S. MGMILLIN, of the city of Pittsburg, county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Applying Steam-Power to the Capstans of Steamboats and other crafts; and I do hereby declare that the following is a full and exact description of the same.

The nature of myinvention consists in connecting the capstan with the freight-hoisting engine or other engine of steamboats and other crafts by-,means of shafts and cog-wheels, so as to operate the capstan by steam-power instead of hand power as has been generally used heretofore.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation, reference being had to the annexed drawings forming part of this specification, in which- Figure l is a side elevation of the capstan, hoisting-engine, and the shaft and wheel connection between them; Fig. 2, a front view of the hoisting-engine and connectingshafts; Fig. 3, a plan of situation of the capstan, er1- gine, and connecting-shafts at the forecastle of the boat.

In all the figures the same letters refer to the like parts in each.

A is the deck; A', the boiler-deck; B, the capstan; C, the hoisting-engine; F, the Wooden framefwork of the engine; D, the engineshaft; E E, the hoisting-rollers,connected with the en gine-shaft by the cog-wheels a and b. G is a vertical shaft extending from the hold of the boat to the cargo wheel-shaftg; with the latter it is connected by the bevel-wheels o d. H is a horizontal shaft in the hold of the boat,

at the middle bulk-head,extending from the vertical shaftGto the capstanB. With theformer it is connected bythe bevel-wheelsl ef, and with the latter by the bevel-wheels g h. The capstan is permanently fastened to its shaft J. The vertical shaft G is arranged so that it can be lifted or lowered by means of the set-screw Z, whereby the bevel-wheels c d and e f can be set out or in gear at leisure, interrupting or hands necessary in the operation.

rlhe advantage in the above-described arrangement is that two men in one hour can do with it the labor of more than six under the old plan Where hand-power is used. It works steadily and regularly, and the lives ofthe men are not endangered as in the old plan.

What I claim herein as myinvention, and desire to secure by Letters Patent, is-

Rotating a capstan placed on deck ofa boat by means of an auxiliary engine, when said engine and capstan are placed forward of the steam-boilers of said boat, substantially as hereinbefore described, and for the purposes set forth.

JOHN S. MGMILLIN. Witnesses:

W. O. LESLIE, H. MoEsER.

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