US849533A - Propeller. - Google Patents

Description

No.849,533. PATENTBD APR. 9, 1907. A. 112150210.

PROPELLBR. APPLICATION 211.21) APR; 23. mos.

rm: NURRIS PETERS Cm, WASHINGTON. D c

UNITED STATES PATENT ()FFTCE.

PROPELLER.

Specification of Letters Patent.

Patented April 9, 1907,

Application filed April 23, 1906. Serial No. 313,115.

To all whom it may concern:

Be it known that I, ANDREW DZIEDZIO, a citizen of the United States, residing at Pasadena, in the county of Los Angeles and State of California, have invented a new and useful Propeller, of which the following is a specification.

The invention relates to a propeller which is designed to be operated by hand or power and which is adapted to be applied to various types of boats.

One object of the invention is to provide a propeller which may be operated by a single person sitting in the boat or which may be operated by several persons acting in unison.

Another object is to provide a propeller which is adapted for pleasure-boats, such as row-boats, skifls, gondolas, or the like, or for propelling life-boats, the apparatus being designed to be operated by one or more persons in the boat even though they are not oarsmen, as the device is operated by a simple pulling of a handle or a rope and no skill for its manipulation is required.

A further object is to provide a device of the character described by means of which the boat may be steered as well as propelled.

The accompanying drawings illustrate the invention, and referring thereof Figure 1 is a side elevation of a boat equipped with the apparatus, two extreme positions of the propeller being shown by dotted lines, the device being illustrated in mid-position by full lines. Fig. 2 is an enlarged view of the propeller, showing a part of the stern of the boat with part of the swivel-bracket shown in section. Fig. 3 is an elevation of the apparatus looking toward the stern of the boat from aft the stern.

1 designates the boat, having a stern 2. A supporting-yoke 3 is secured to the stern of the boat by a pair of arms 4, which are securely bolted to the boat. Pivoted to the yoke 3 is a swivel-bracket 5, in which is rev olubly mounted a sweep 6, which is supported in place by a pair of collars 7, the collars bearing against both sides of the swivelbracket 5. Fastcned to the lower end of the sweep 6 is a blade forming a rudder 8, the free edge of the rudder being projected forward. Riveted to the lower end of the sweep 6 is a pair of bowed arms 9, the lower ends of the arms 9 being also riveted to the rudder S. Extending across between the arms 9 near their upper ends is a pintle 10,

l on which is mounted a leaf 11, to which is riveted a pendent propeller-blade 12.

A bifurcated spring 13 is so mounted as to bear against the forward taco oi the propellerblade 12 to form a yielding means which acts as a buffer to soften the strike of the propeller-blade against the bowed arms 9, thus deadening the sound and preventing battering of the parts. A tensile spring 14 has one end connected to the sweep 6 below the swivel-bracket 5, the other end of the spring 14 being connected to the stern of the boat, as shown in Figs. 1 and 2. Pivotally connected to the upper end of the sweep 6 is an operating-rod 15, provided with a handle 16. The operating-rod 15 extends forward over the boat, so that the handle 16 lies in a convenient position for the person who operates it.

In operation, when the boat is operated by one person in the boat the sweep 6 is rocked backward and forward by the person alternately pulling and pushing on the handle 16,} and as the upper end of the sweep moves for ward the propeller-blade, owing to the resistance to .its backward movement oil'erod by the water, results in driving the boat forward. As the sweep takes the return stroke the propeller-blade 12 is drawn forward and during its forward niovment it assumes an elevated position, as illustrated by dotted lines in Figs 1 and 2, so that very little resistance is o'fl'ered to its passage forward through the water, and thus the forward motion of the boat is not impeded. As the sweep 6 can be turned in the swivel-bracket 5, it is possible to deflect the rudder 8 to guide the course oi the boat, and it is obvious that the rudder, as

well as the propeller, is operated by the simple operating-rod 15. More over, by reason 01 the propeller always operating in the direction of the rudder, the boat is much easier guided by reason of the lateral thrust or impetus given to the stern by the action ol the propeller when the propeller and rudder have been turned. to alter the course of the boat. If desired, a rope 17 may be connected to a bracket 18 on the sweep 6, so that several persons sitting in the boat may pull upon the rope 17, and thus act in unison to propel the boat, and thus by reducing the amount of labor required ol each individual it is possible to propel the boat rz'ipidly, the steering being accomplished in this case by means of the operating-rod 15. The return or forward ITO stroke of the propeller is accomplished by the reaction of the spring 14, and as the power required to move the lower end of the sweep forward, together with the attached rudder and propeller 12, is comparatively slight the strength of the spring 14 need not be so great as to entail any appreciable increase in force required to operate the lower end of the sweep with its attached parts backward, and it is hence not necessary to push back the handle 16, as the spring 14 relieves the operator of that duty, the propulsion of the boat being accomplished by merely pulling forward the handle 16 or the rope 17.

The apparatus when equipped eitherwith or without the rope 17 provides a pleasurable exercise for persons riding in the boat, and as there is no skill required for its operation and as no splashing of water accompanies the operation, such as often accompanies propulsion by means of cars, the device may be safely operated by ladies or children. The device is also of great value for use on a lifeboat, as the rope 17 enables several people to combine their efforts to propel the boat and there is no danger of oars being lost. Furthermore, the rope 17 performs the service of a life-line in addition to its function of operating the sweep 6.

In order to reverse the direction of travel of the boat, the sweep 6 is turned half-way around in its swivel-bearing 5, so that the rudder 8 then projects aft and the propellerblade 12 lies forward of the sweep. The

sweep 6 is easily turnedin this manner by swinging it as nearly horizontal as may be which will bring the rod 15 nearly in line with the sweep, allowing it to be swung over, while the rudder 8 and propeller-blade 12 being out of the water permits easy turning in the sweep. After the device has thus been reversed it is obvious that the rocking motion will cause the boat to be propelled astern instead of forward.

What I claim is A bracket-support attached to the boat, a

swivel-bracket pivoted to the support, a

sweep journaled in the swivel-bracket, collars on the sweep bearing against both sides of the swivel-bracket, a propeller hinged to the lower end of the sweep, a rudder at the lower end of the sweep projecting forward, a pair of bowed arms at the lower end of the sweep forming a rest for the propeller, a spring for preventing violent impact of the propeller against the bowed arms, an operating-rod pivoted to the upper end of the sweep, a rope attached to the sweep above its fulcrum, and means for automatically retracting the sweep.

In testimony whereof I have hereunto set my hand, at Los Angeles, California, this 16th day of April, 1906.

ANDREW DZIEDZIO.

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