US402874A - Screw-propeller for vessels - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

O. VOSE. SCREW PROPELLER FOR VESSELS.

No. 402,874. Patented May '7, 1889..

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U. VON-1. SCREW PROPELLER FOR VESSELS.

No. 402,874. Patented May '7, 1889.; r

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- WJZJVE'SSES UNITE-D STATES PATENT OFFICE.

CLIFTON VOSE, OF BROOKLYN, NEW YORK.

S'CREW-PROPELLER FOR VESSELS.

SPECIFICATION forming part of Letters Patent No. 402,874, dated my '7, 1889.-

Application filed February 8, 1889. Serial No. 299,109. (No model.)

To all whom it may concern:

Be it known that I, CLIFTON VOSE, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Means for Propelling Vessels; and I do declare the following to be .a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to certain improvements in means for propelling vessels 5 and ithas for its objects to'provide certain improvements in the construction and arrangement of the propeller-shaft, the blades attached to the same, the means of mounting the propeller-shaft, and the construction of the propelling devices generally, as more fully hereinafter described, and pointed out in the claims. These objects I attain by the means illustrated in the accompanying drawings, in which- Figure 1 is a view partly in side elevation and partly in section. Fig. 2 is a detail view of the propeller-shaft. Fig. 3 is a detailed view of the bearing or hanger. Fig. 4 is a detailed perspective view of one of the propeller-blades. Fig. 5 is a detailed view of the propeller; and Fig. 6 represents a view, partly in side elevation and partly in longitudinal section, showing a modification of my invention.

Referring to the drawings, the letter A represents the hull or shell of the vessel, and B a water-tight compartment secured to the bottom thereof at any convenient point. In'Fig. 1 of the drawings the said compartment is shown as arranged about midway between the stem and stern of the vessel, and in Fig. 6 it is shown as commencing at the stem and extending about to amidship thereof.

The compartment may consist of a metallic shell, as shown in Figs. 1 and 6, and may have suitable flanges, O, by means of which it may be bolted to the hull or shell of a vessel; but it is evident that it may be otherwise secured, if found convenient. The compartment at opposite ends is provided with watervarious points along the bottom of the vessel the said shaft is journaled and supported in hangers G, bolted to the bottom of the vessel.

The hangers are provided with divided bearings or boxes H, which are secured together by means of bolts, rivets, or otherwise, so that the shaft may be readily mounted in said bearings or removed therefrom, as may be required.

The letter I indicates an oil-passage leading from the interior of the vessel down through the hanger to its bearing for the purpose of supplying lubricant to the shaft of the propeller.

The letter K indicates the propeller-blades. These are each made in two parts, having shanks z' with semicircular hubs t" and pro jections 1 by means of which the blades may be cheaply secured to the shaft, the semicircular hubs being applied to opposite sides of the shaft and secured together and bound to the shaft by means of bolts, rivets, or other wise, as shown in Fig. 5 of the drawings. The cranks of the propeller-shaft are located in the compartment or chamber above mentioned, and are indicated by the letter L in the drawings, and the bottom of the vessel above such compartment or chamber is provided with openings L, through which the pitman of the engines or other motor or gearing connected with the propeller-shaft may work.

The sections of the propeller-shaft are preferablymade in successirely-decreasing diameters, as shown in Fig. 2 of the drawings, so as to give the requisite strength with the least possible weight.

In the modification shown in Fig. 6 of the drawings the propeller is in the form of a worm or screw thread, which may be continuous or in sections and supported at various points by the hangers G, as before mentioned.

Having thus described my invention, what I claim, and desire to secure by Letters Pat-- ent, is-- 1. The combination, with the propellershaft centrally located beneath the vessel, of

the hangers in which said shaft has bearings, the said hangers being provided with passages extending from the interior of the vessel, whereby lubricant can be applied to said bearings, as set forth.

2. The combination, with a vessel, a propeller-shaft centrally located and extending longitudinally beneath the same, a Water-tight chamber attached to the bottom of the vessel and surrounding the crank-arms of said shaft, and openings from the interior of the vessel into said chamber, of two or more screw-propellers on each side of said chamber, and

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