US595740A - Southington - Google Patents

Description

(No Model.)

T. W; SOUTHINGTON PROPELLER.

No. 595,740. Patented Dec 21, 189?.

NITE

STATES THOMAS WASHINGTON SOUTHINGTON, OF LOOUST VALLEY, NEIV YORK, AS- SIGNOR OF ONE-HALF TO JAMES TILLEY MITCHELL, OF SAME PLACE.

PROPELLER.

SPECIFICATION forming part of Letters Patent No. 595,740, dated December 21, 1897.

Application filed March 12, 1897.

T0 all-whom it may concern:

Be it known that I, THOMAS WASHINGTON SOUTHINGTON, a citizen of the United States, residing at Locust Valley, in the county of Queens and State of New York, have invented certain new and useful Improvements in Propellers, of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to propellers; and the object thereof is to provide an improved device of this class for use in connection with steam vessels, whereby greater propelling power is secured, together with less vibration, and a minimum amount of back action. This object I accomplish by means of propellerblades of peculiar and novel construction, which constitute the chief feature of my invention; and the inventionis fully disclosed in the following specification, of which the accompanying drawings form apart, in which the separate parts of my improvement are designated by the same numerals of reference in each of the views, and in which Figure 1 is an end View of my improved propeller; Fig. 2, a side view thereof, and Fig. 3 a transverse section of one of the blades 1 on the line 33 of Fig. 2.

In the practice of my invention I provide a propeller which comprises the usual tubular hub 5, through which the propeller-shaft passes, and said tubular hub is provided with a plurality of blades 6, which are preferably three in number, and which are of the form and construction hereinafter described.

The blades 6 are secured to the hub 5 in any desired manner or may be formed integrally therewith, and said blades constitute plates which are set diagonally to the hub 5 and which project radially therefrom. These blades are curved longitudinally, as shown, each of said blades being provided centrally and longitudinally thereof with a forwardlydirected curve 7, the sides of the blades being curved longitudinally, so that they are segmental in cross-section, the fronts thereof being convex, as shown at 8, and the opposite edges thereof being each directed forwardly, and the opposite sides of the blades are correspondingly formed, being provided Serial No. 627,097. (No model.)

centrally and longitudinally with a groove 9, and the sides of the blades, adjacent to said groove, being convex in cross-section,as shown at 10. The end of each of the blades is split for about one-quarter of its length, and the separate parts or wings 11 thus formed are bent in opposite directions, that part or wing connected with the forward edge of the blade being bent forwardly and that portion connected with the rear portion of the blade be ing bent backwardly, and the inclination of these parts or wings 11 with reference to the hub 5 of the propeller is such that if said parts or wings and said hub were projected they would form an angle of about forty-five degrees. It will also be seen that one of the blades is formed on or connected with the hub 5 adjacent to the rear end thereof, the next succeeding blade is formed on or connected with said hub near the center thereof, while the next blade is connected with'or formed on said hub near the end opposite to that adjacent to which the first blade is formed or secured and the propeller thus operates as a screw. It will be apparent that this arrangement of the blades may be modified, as described, the chief feature of this invention consisting of the form of the blades, as hereinbefore described.

By means of this construction I secure a great increase of power, while at the same time the Vibration caused by the propeller is largely reduced, and the back action which accompanies the operation of propellers as usually constructed is entirely avoided.

The word forward as used in the foregoing description refers to the direction in which the propeller turns in order to propel the vessel, while the .word backward is used to designate, the opposite direction, or that in which the propeller turns when backing a vessel.

Having fully described my invention, I

claim as new and desire to secure by Letters Patent- 1. A propeller provided with blades which opposite directions, substantially as shown.

and described.

2. A propeller provided with blades which project radially from the hub thereof, and which are set obliquely to said hub, said blades being bent centrally and longitudinally to form a forwardly-directed portion, at each side of which they are segmental in form in cross-section, the edges thereof being directed forwardly, substantially as shown and described.

3. A propeller the blades of which project radially from the hub thereof, and are curved in cross-section so as to form aforwardly-directed central portion, the sides of each blade adjacent to said central portion being segmental in form, in cross-section With the edges thereof directed forwardly, and the outer end of each blade being also split for a portion of its length, and the separate parts thus formed being turned in opposite directions, substantially as shown and described. 4. A propeller, comprising a hub 5 and blades 6, each of which is set diagonally of said hub, and at different points longitudinally of the same; each blade being provided with a curved portion 7 and curved portions 8, and each being provided With Wings 11 which are curved in opposite directions, substantially as and for the purpose described.

In testiinony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing Witnesses, this 10th day of March, 1897.

THOMAS WASHINGTON SOUTHINGTON. \Vitnesses:

O. GERST, T. M. CARR.

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