US506572A - Propeller - Google Patents

Description

(No Model.)

WAGENER PROPELLER.

'No. 506,572., Patented 0%; .10, .1898.

WITNESSES: v I ail/Slim? a g I I ATTORNEY.

UNITED STATES PATENT OFFICE.

NICOLAS WAGENER, or BALTIMORE, MARYLAND.

PROPELLER.

SPECIFICATION forming part of Letters Patent No. 506,572, dated October 10, 1893. Application filed November 24, 1890. Renewed April 20, 1892. Again renewed April 5, 1893. Serial No. 469,214. (No model.)

To all whom it may concern:

Be it known that I, NICOLAS WAGENER, a citizen of the United States, residing in the city of Baltimore, State of Maryland, have invented a new and useful Improvement in Propellers, which improvement is fully set forth in the following specification and accompanyin g drawing.

My invention consists of a propeller having blades of the form hereinafter described, whereby the stopping or pushing back of the Water from the front of the screw is prevented, thereby lessening the resistance to the wheel, and reducing it to a minimum.

In the drawing, which represent a perspective view of a propeller embodying my invention, A designates a propeller wheel or screw consisting of the hub B, the blades 0, and the rim D. The said bladesO are of the form of true screws,and are preferably of greater thickness at their connection with the hub, than at their junction With the rim, and

their terminal edges extend radially from the hub, this construction allowing a uniform action of the wheel, whether it is going forward or backward. The lines of connection of the blades and hub are so inclined that a line drawn on the hub from one end of a blade to the opposite end of the adjacent blade, is substantially parallel with the axial center of the hub. The blades are also of such thickness that a line drawn through a series of points on the surface of a blade, and equally distant from the hub, will be parallel or equi-distant from a line drawn through a series of points on the adjacent surface of the next blade, and equally distant from the hub as the first series of points. The latter described construction permitsthe water to readily pass through the propeller between the blades without change of form,

so that there is no stoppage or pushing back 'thereof, and avoids a swell of the water at the side, so that the only rough water in contact with the propelleris at its rear end.

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

A propeller wheel forming a true screw,

having the opposite exposed edges of its blades extending from the hub in straight radial lines, and the faces of the adjacent blades equally distant from each other on parallel lines, a hub of equal width from end to end of the blades, and acontinuous rim or band entirely inclosing the peripheries of the blades and extending from one edge thereof to the other, substantially as described.

NICOLAS WAGENER. Witnesses:

JOHN A. WIEDERSHEIM, A. P. JENNINGS.

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