US117051A - Improvement in propulsion of vessels - Google Patents

Description

UNITEE STATES KEYES P. COOL, OF GLENS FALLS, NEW YORK.

IMPROVEMENT IN PROPULSION OF VESSELS.

Specication forming part of Letters Patent No. 117,051, dated July 18, |871.

To all whom it may concern:

Be it known that I, KEYES P. COOL, of Glens Falls, in the county of' Warren and State of' New York, have invented a new and Improved Fropeller; and I do hereby declare the following to be a full, clear, and exact description ofthe same,

,reference being had to the accompanying drawing making a part of'this specilication, in which- Figure l is a plan view. Fig. 2 is a rear elevation, and Fig. 3 is an elevation longitudinal as to the chamber m and transverse as to the iioat l.

This invention relates to a propelling mechanism employing' two cylinders and intended to be placed in a horizontal position on the floor ofthe after-cabin of a canal-boat or other vessel, and in which the piston-rods are directly connected with lloats hung to the rear ends of' said rods, said floats working in bottomless chambers built at the vessels stern and open to the water, so that the moving ofthe iioats sternward propels the boat forward, and the moving of the ioats forward propels the boat sternward. The invention consists in the combination of certain parts, as

. Specified in the claim.

Referring to the drawing, A is a canal-boat.

c c are two cylinders, placed in a horizontal position lengthwise upon the boats bottom, one at each side of the keelson and near the stern, said cylinders being supplied with steam in any suitable manner. b b are the piston-rods, the same extending' out of the cylinders at both en ds of the latter, to their rear extremities horizontal crossbars d being secured, which cross-bars stand crosswise of' bottomless chambers m, open at their rear ends and built in the vessels bottom, and at her stern horizontal grooves c being formed lengthwise ofthe sides of' each chamber my, which grooves the ends of the cross-bars d occupy7 the latter being guided, as they reciprocate back- A ward and forward, by the grooves.- Floats lare hung to the cross-bar d, said iioats being of a length a little less than the width of' the chambers m, and of the same depth as the chambers The piston-rods b are each provided with two radial arms, e f, projecting at different angles, one placed in front ofthe blade and the other in rear of' it. Toothed wheels are secured upon the piston-rods in front of' the cylinders, and any suficient means of' turning the piston-rods by means of' said toothed wheels is provided. Vhen the boat is to be propelled forward the arms e should be turned into a vertical position in front of the fioats, the arms j' then standing clear ofthe floats. The piston-rods moving backward, the floats are vdriven in a vertical position through the water,

thus driving the boat forward. rlhe piston-rods moving forward, the floats rise to the surface of the water and offer no resistance. To back the boat, the pins e should be turned up clear of the iioats, by which movement the pins j' are brought down in rear of them. 'llien, when the floats are drawn forward, the pins f hold them vertical in the water and the boat is forced backward, and

when the floats are driven backward they rise to the surface and meet with no resistance. The rods g are those which operate the valves. By

the chambers m the floats are wholly protected.

from accident, and also made to act against a body of' unbroken water, from which they derive the utmost possible resistance. 'lhe water is also' forced backward in a line with the stern of the boat, and thus prevented from washing against the banks of the canal.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

rI he combination of floats l, rotary piston-rods b, arms ef, and cross-bars d, as described.

KEYES I. COOL.

Vitnesses F. W. RoErNsoN, L. A. ROBINSON.

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