US733891A - Propeller. - Google Patents

Description

UN T D STATES Patented July 14, 190$.

PATENT OFFICE.

HARRY HERBERT ABELL, or PORT EWEN, NEW YoRK.

PROPELLER.

SPECIFICATION forming part of Letters Patent No. 733,891, dated July 14,1903. 7 Application filed April 3, 1902. Serial No. 101,300. (No model.)

To all whom it wtcty concern.-

Be it known that I,HARRY HERBERT ABELL, a citizen of the United States, residing at Port Ewen, in the county of Ulster 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.

Figure l is a top View of the propeller and supporting or moving mechanism, also.showing a flattened surface on the face of shaft X. Fig. 2 is a side View of the same construction, showing a vertical section through the propeller Y, parallel with and through the shaft, forming a portion of said propeller, also showing the fastening-bolt for said propeller and the depressed surface at the projecting end of shaft. Fig. 3 is a view of a transverse section across the shaft X and through the journal-boxes Z. 1

This improvement relates to propellers,and the object thereof is to provide a construction which maybe moved by a much simpler combination of machinery than that now in use for a rotary propeller and may be used as an accessory motive power with a rotary screw-propeller; also it may be operated by manual labor. By means ofa lever and fulerum considerable power is attained. The propeller is at the outer end of the shaft and moves through the elements by a straight-out movement from the ship and then drawn back, being the same movement as the back-andforth movement of a piston-rod in a cylinder, the concave or broad end surface of the propeller being forced against and through the resisting elements which are displaced by its movements. This resistance of the elements to the rapid movement of thepropeller causes the ship or boat to be forced forward when the propeller is behind the boat or ship and is driven out from the boat or ship with the concave or broad end outward. When the propeller is in the bow of the boat or ship, with or without the cone Y, the same movement of the propeller as described through the water would back the ship or boat, the convex or narrow end surface of the propeller being inclined,so as to meet with slight resistance from the water when being forced rapidly through it and being at theopposite end of the propeller from the concave or broad end thereof, so that in a back and outward movement the amount of power secured is the amount of the greater resistance made by the water to the movement of the broad end surface of the propeller which is forced against it over the lesser resistance made by the water to the passage through it of the convex or narrow end surface of the propeller.

The convex or narrow end surface of the propeller is attached to the shaft projecting beyond the boat or ship. The sides of the propeller maybe longer or shorter than the broad end thereof, according to the construction desired. The propeller is the outer end surface of a metallic shaft,being slightly concave or hollowed out. When the propeller moves out from the ship or boat,this surface is pressed against the water in order to increase this surface in the construction as shown in the drawings, so as to secure more resistance from the water. A hollow metallic band is arranged flat around said shaft, having one edge thereof extended into a flaring rim inclining away from said shaft, so as to form a pocket between the rim and said shaft. Said rim is extended at the flaring margin thereof,,so as to form projections, said projections being inclined in the same direction as the rim from which they are extended. The use of two projections, as shown in the drawings, is not important. One, three, or more could be used. The marginal notches adjacent to the sides of said projections permit the water to pass, so as to break the vacuum behind the rapidlymoving propeller. The end of the flat band opposite to-said flaring end rests flat against the shaft with the outer. edge thereof beveled off, so as to form an inclined outer surface. The said metallic band is secured to the shaft around which it is arranged by contraction or bolting. The shaft at the outer end of which is the propeller is continued through an opening into the ship or boat. This opening is provided with means to. keep out the Water, the same as the opening through which 'a screw-propeller shaft revolves being simiend of the shaft may be connected with the outer end of the piston-rod of the cylinder, or the inner end of the shaft may be attached by a movable joint to a crank, at the end of which crank power may be applied in various ways. The said inner end of the shaft may be attached near its end by movable joint and bolts to a crank. This crank is attached by a movable joint and fastenings to a lever with fulcrum, as shown in the drawings.

The shaft to which the propeller is attached moves within the boat or ship through journal-boxes, which also hold it in its place. The shaft is also provided with bands to prevent it passing beyond the necessary limits. In order to prevent the propeller turning around, the round shaft to which it is attached has a section of it within the boat or ship of irregular outer surface, being an arc of the rounded outer surface removed and thereat presenting a fiat surface. This described section of the shaft passes freely through supporting journal-boxes, the inner surface of which is made to conform to the outer surface of said shaft having an are removed from its rounded outer surface. The shaft and propeller attachment move in a line straight out and back.

Referring to the drawings, Y represents the metallic propeller, consisting of the hollowed end of a shaft with the hollow cone attachment, projections, and fastening-band, the exterior of the entire construction being funnel-shaped; broad end outward.

The following letters represent different parts of propellerand moving shafts: Y, the outwardly-inclined rim around the fiat hollow band, with Y Y the projections from inclined rim; Y the flat hollow band, with Y the sloping end thereof, having an inclined outer surface to the Water, so as to move through said water with slight resistance; Y bolts and bolt-holes.

Y represents the inclined outer surface of the rim and projections, which, with the band, form an obtuse angle in the outer surface adjacent to the base of the propeller.

X represents the shafting, having a hollowed surface on the outer end thereof to be forced against the water, the said shaft being Z movable joint and fastenings connecting shaft with link.

Z represents link, with Z representing the lever to apply the power; Z, the fulcrum for supporting lever.

Having fully described my invention, I claim as new and desire to secure by Letters Patent 1. Athrust-propellerand supportingmechanism, the propeller consisting of the cone Y as shown and described and the end of the projecting thrust-propeller shaft,the supporting mechanism consisting of the rounded propeller-shaft X and the supporting journalboxes as shown and described, said shaft having an arc removed from the rounded surface of said shaft; also said shaft being united by a link with movable bolted joints to a barlever.

2. Athrust-propellerand supporting mechanism, consisting of the shaft X having attached adjacent to the outer extremity thereof the infundibuliform cone Y having open marginal notches in the outer edge thereof.

3. Athrust-propeller and supporting mechanism, consisting of the outer end surface of the projecting end of shaft X, said shaft being supported by journal-boxes having the inner surface thereof conforming to the outer surface of the said shaft, the said shafthaving on the outer transverse free end surface a hollowed depression.

4. A thrust-propellerand supporting mechanism, consisting of the regularly-rounded continuation end of a shaft of irregular outer surface supported by journal-boxes having inner surfaces conforming to the outer surface of the said shaft, the said shaft having on the outer transverse free end surface, a hollow depression and the said shaft having adjacent to the free end thereof arranged around the continuously-parallel sides of the said shaft a hollow band with fastening provisions for attaching the band to said shaft, the said band having the flaring rim integral with and extended to form the projecting arms Y Y also the said shaft having attached thereto the band Z In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this the 9th day of January, 1902.

HARRY HERBERT ABELL.

\Vitnesses:

EGBERT ELSW'ORTH, JAMES I. VAN AKEN.

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