US731020A - Propeller for vessels. - Google Patents

Description

PATBNTBD JUNE 16, 190s.

B. GHARLBS. PROPBLLBR POR VEssBLs.

APPLICATION FILED DEO. a, 1902'.

No MODEL.-

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No.. 731,020. PATENTED JUNE 16, 19.03, B. CHARLES;

PROPELLER FOR VESSELS.

APPLICATION FILED DEO. 8, 1.902.

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UNITED STATES Patented .Tune 16, 1903.

BERNT CHARLES, or NEWARK, NEw JERSEY.

PROPELLER FOR VESSELS.

bPEGIFICATION forming part of Letters Patent No. 731,020, dated June 16, 1903.

Application filed December 8,1902. Serial No. 134,243. (No model.)

To all whom, t mln/y concern.-

Be it known that I, BERNT CHARLES, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented and produced a new and original Improvement in Propellers for Vesse'ls; and I do hereby 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 numerals of reference marked thereon, which form a part of this specification.

The objects of this invention are to secure for vessels having both sails and steam-power a propeller which will offer little obstruction to progress of the boat when idle; to provide for this purpose a construction enabling` the propeller-blades to be readily folded together or outspread in radial position, as desired; to provide suitable means for doing this, and to obtain other advantages and results, some of;

which will -be hereinafter Vreferred to in connection with the description of the working parts.

The invention consists in the improved propeller for vessels and in the arrangements and combinations of parts of the same, all substantially as will be hereinafter set forth, and

vfinally embraced in the clauses of the claim.

Referring' to the accompanying drawings, in which like numerals of reference indicate corresponding parts in. each of the several figures, Figure 1 is a view of my improved device, in side elevation, with the propellerblades outspread; and Fig. 2 a central longitudinal section of the same with the propel- 1er-blades collapsed. Fig. 3 is an end view of the shifting means looking' toward the stern of the vessel; and Fig. 4l is Aview of the opposite end, as on line fr, Fig. 1. Fig. 5 is a stern view of the propeller.; and Fig. 6 is a central longitudinal view of the entire device, similar to that shown in Fig.2, except that the propeller-blades are extended.

In said drawings, 2 indicates a portion of the hull of a vessel, and 3 is the usual tailblock, extending therethrough and providing a bushing or bearing for the propeller-shaft. Said tail-block, as common, has a stuffing-box 4.- at its inner end, an adjacent annular fia-nge 5, adapted to lie against the innerwall of the vessel, and an outer nut 6 to clamp the tailblock in place against the outer Wall of the vessel.

The propeller-shaft 7 is for that portion of itself which extends through the tail-block provided with a sleeve 8, slidable therein and upon the shaft to which it is keyed, as at 9 9. The outer end of said sleeve S is provided with annular ribs or threads l0 on its outer surface adapted to engage segmental gears formed by teeth ll on the inner ends of the propeller-arms l2. Said propeller-arms present at their outer ends blades 13, of any usual type, and are preferably four in number. Theirvinner ends are flattened, as at l4,.and adapted to be pivoted in slots 15, formed longitudinally in a hub 16, made fast on the outer end of the propeller-shaft 7, as by a longitudinal key 17 and a cross-key 1S. Thus as the propeller-shaft is rotated, with the said arms 12 in normal outstanding positions at right angles to the shaft, the said sleeve 8 and propeller-arms 12 rotate with it 'to drive the vessel, as usual; but in case the propeller is not needed to drive the vessel, as Whenshe isunder sail, and it is desired to eliminate the obstructing eect of the outspread propeller-arms, the sleeve S is slid longitudinally inward upon the shaft 7, thus swinging the arms into a rearwardly-extend ing horizontal position, as shown in Fig. 2. Vhen thus collapsed or folded about the hub 16, it is obvious that they oder but little or no obstruction to forward motion of the vessel. The sliding of said sleeve S to close and open the propeller-arms may be effected by any suitable means adapted to thepurpose; but I prefer to use, and have shown in the drawings for this purpose, the specific means next described.

Upon the propeller-shaft 7, beyond the inner end of the sleeve 8is fixed the threaded,

collar 19, adapted to be inclosed and engaged by an elongated nut 20, having a wrench-receiving end 2l farthest from the sleeve S. The end of said nut 20 next the sleeve S is adapted to receive a flange or head 22 thereon and has an interior annular stop 23 to abut against the saine. At the opposite side of said head a ring 24 is inserted in the hollow nut and held by set-screws 25. Thus as the hollow nut 2O is turned With reference to the shaft 7 the sleeve 8, connected at its headed end to said nut, is correspondingly moved. V

Having thus described the invention, what I claim as new is l. ln a propeller, the combination of a shaft, a hub fast upon the outer end of said shaft and being Centrally recessed at its inner end, propeller-arms pivoted in longitudinal slots in the walls of said hub and projeoting into the recessed end thereof, and a sleeve slidable upon the shaft and having its outer end projecting into the said recessed end of the hub into engagement with the propeller-arms.

2. In a propeller, the combination of a shaft, a hub fast upon the outer end of said shaft and being centrally recessed at its inner end and having in the Walls of said recessed portion longitudinalV slots, propellerblades pivoted in said slots and forming segmental gears at their inner ends projecting radially into the recess of the hub, a slidable sleeve upon said shaft having its outer end Y lying in said recessed end of the hub and being annularly toothed and engaging the said propeller-arms, and means for sliding said sleeve.

venoso 3. The 'combination With a propeller-shaft,

propeller-arms pivoted thereon, and a sleeve slidable on said shaft and engaging at one end the said arms, of means for sliding` said sleeve, comprising an eXteriorly-threaded collar on the shaft beyond the inner end of the said sleeve, a nut Working on said collar, and means connecting said nut to the sleeve.

4. The combination with a propellerA shaft, propeller-arms pivoted thereon, and a sleeve slidable on said shaft and engaging at one end the said arms, of means for sliding said sleeve, comprising' an eXteriorly-threaded lcollar on the shaft beyond the inner end of the sleeve, and having a tubular extension adapted to receive the end of the sleeve, a head on said sleeve end, an integral interior stop on the said tubular extension, and a removable ring inserted in the end of said eX- tension to prevent Withdrawal of the sleevehead.

In testimony that I claim the foregoing I have hereunto set my hand this 6th day of December, 1902.

BERNT CHARL 1S.

Titnesses C. B. PITNEY, RUSSELL M. EvERET'r.

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