US86086A - Improvement in propellers - Google Patents

Description

` compared with any other method now known or in use;

@W tant dimmi- ALFRED c. LOUD, or sAN FRANCISCO, CALIFGRNIA.

Lette/rs Patent No. 86,086, dated Ianuwry 19, 1869.

:innovar/:ENT 1N PROPEIQLERS.

'l'he Schedule referred to in these Letters Patent and making part of the same.

To all whom it mai/y concern Beit known that I, ALFRED C. LOUD, of San Francisco, in the county of San Francisco, and State of California, have invented a new and improved Method of Propelling Vessels; and I do .hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same', reference being had to the accompany'- This invention relates to a new and 'improved device for propelling vessels through water, whereby increasedspeed, as well as other advantages, are obtained, as

and

The invention consists in placing upon a revolving horizontal shaft two or more disk-,'wheels, secured upon said sha-it at an angle varying from aright angle about fifteen degrees, so that the 'inner faces of such wheels or disks shall meet each other upon one side, and diverge from each other ou the other side, the said disks forming, when thus secured to the shaft, asin'gle wheel, which, in general outline, is in the form of" a Wedge, with angles more or less acute, as will be hereinafter more fully described.

In the accompanying plate of drawings- Figure 1 represents a side elevation.

Figure 2 is a top view, showing the wheel placed upon the shaft, according to my invention.`

Similar letters of reference indicate corresponding WNS! A represents the shaft, and

B B, the wheel.

In this example of my invention, a pinion, O, and a gear-wheel, D, are shown, for imparting motion to the wheel, but I do not limit myself to that or to any other particular method of applying the power.

The parts of the wheel B B are designed to be smooth on their inner and outer sides or faces, and eitherfattached to the shaft by a hub or centre, with arms, as seen in the drawing, or they may be entire disks, with suitable centres or hubs. They may be made of either wood or metal, and as thin as consistent with strength and durability. In diameter they may be aboutthe same asthe ordinary steamboat paddle-Wheel, so that they may be attached to the common steamboat-shaft,

and be revolved in the ordinary wheel-houses.

The disks or parts B B are united together and fastened by boltsor rivets, or in any suitable manner, at the point where their inner sides meet, as seen at E, so that the disk-Wheels form a single wheel, placed on`each side of the boat, like ordinary paddle-wheels.

The diver-ging points E F of this Wheel are designed to' be in distance apart about' equal to the length of the paddle-wheel buckets or floats.

The dotted lilies in the drawing indicate the position of the wheel when it has 'made' half of 4a revolution.

G represents the Water-line, it being designed to sink the wheel a little deeper in the water than the ordinary paddle-wheel.

From the lateral swaying of -the wheel, during its rotation, its action on the water approaches nearly to that of the tail of a ishin its effect, or to that of an oar, when used in sculling; it enters the water as a wedge, and lifts no water in rising.

The propelling-force is exerted constantly during the revolution of the wheel, thereby'giving a steady and uniform motion to the boat, with an impetus greatly exceeding that imparted by the common paddle-Wheel,

from the applicationof a givenpower.

I am aware that it has heretofore been proposed to make a propelling-wheel by placing upon a shaft, in an oppositely-inclined position, two`disks, and I therefore do not claim such broadly; but

What I do `claim as new, and desire to secure by Letters I'ateut, is-

The propelling-wheel, herein described, consisting of two or more disks, secured in an oppositely-inclined position upon -a shaft, so that they meet at one point in their periphery, and are there united or joined together by bolts, or otherwise, substantially as shown and described, for the purpose specified.

' ALFRED O. LOUD.

Witnesses:

FRANK BLooKLnY, ALEX. F. RoBERTs.

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