US1180430A - Air-thrust propeller for boats. - Google Patents

Description

C. E. RIEDEL.

AIR THRUST PROPELLER FOR BOATS. APPLICATION FILED APR.29, |915.

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Patented Apr. 25, 1916 M @kvm/ML, M

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Application filed April 219, 19115. Serial No. www.

To all when?, t may concern i 'Be it known that I, CHARLES Eowanq RIEDEL, citizen of the United Statesyresiding at Detroit, county of Wayne, State-of tcation z-lFigure l,

Michigan, have invented a certain new vahd A useful Improvement in Air-Thrust I Proand declare the followving to be a full, clear,- and exact description pellers for Boats,

of the same, such `as Will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying4 drawings, which form a `part of lthis specification.

My invention relates toan airthrust propeller for boats :shown in the accompanying drawings and more particularly pointed out inthe following specification and claims.

The s o-called air thrustv propeller -for boats is being readily adopted in localities abounding 1n shallow streams or. upon inland lakes having weeds apt to become entangled in the submerged propellers of small,

launches. It has been found, however, that the submerged rudders employed in connection with air thrustpropellers are objectionable when passing through water .overrun with weeds, or when landing at a bank lin shallow water, in either case Vit being often necessary to remove the rudder.

rllhe-object of this invention, therefore, is to overcome these objections by dispensing entirely wi h a submerged or other rudder; by mounting 'the device on a horizontally swinging platform adapted to be operated manually and within a prescribed arc, whereby the propeller blades may be, shifted to either right or left that the boat may be like- Wise directed', or to a neutral position or radius-that the boat may be driven directly ahead. I

@ther advantages andimprovem'ents Will hereafter appear.

ln thedrawings accompanying this speciis an elevation of the device attached to the stern of a boat looking toward the propeller blades. lFig. 2, is a side elevation of the device'attached to a boat, a`

fragmentary portion of the latter, only, being shown. ig. 3 is a plan view of the same. Fig. 4, is a horizontalsectional view of a detail, taken on line tf-4 of Fig. 2. v

Referring now to the letters of reference placed upon the drawings denotes a suitable prime mover -or motor, preferably an internal combustion engine. n

B, is a platform horizontally adjustable,

` 4upon whichthe engine rests and to which it is secured.

9B', is a stublshaft, preferably integral ,with the platform, journaled in a tilting frame 'C,'in turn pivoted at c, to a detacha-l ble-clamping device D, adapted to be engaged to the stern of a boat.

` lF, is an arm secured to the stub shaft B", formanually'swinging the platform B, to which the motor is secured.

f, f, are stops carried by the tilting frame to limit the swinging action of the arm F.

Gr, is a suitable bearing carried by the tilting frame to receive the' thrust of the downwardly extending stub shaft B', projecting from the swinging platform.

H, denotes a plurality of holes in the side Aof the tilting frame C, to receiveand co-act with a removable bolt H', carried by the clamping device D, whereby the tilting platform may be adjusted within a pre-determined degree and secured in its adjustedpo- ,sition against accidental release, should the angularity of the boats stern to which it is clamped, make this course necessary. llt being obvious that by tilting the platform the propeller may be adjusted to a substantially vertical position, producing greater elli ciency in operation.

l indicates the engine propeller shaft, and l', are lpropeller blades carried by the shaft.

J, denotes an annular guard frame encircling the path of the propeller blades I. K, indicates a wire fabric Secured to the annular frame Ato protect the occupants of the boat from injury through accidental contact with the revolving blades.

' L, indicates the fuel tank, and L', the

usual carbureter.

Having indicated the several parts by reference letters the construction and operation of the device will be readily understood. When it is desired to drive the boat straight ahead, the horizontally swinging platform, upon which the engine is mounted is manually adjusted by meansiof the arm F, so that the propeller shaft is in line with the keel of the boat, it being obvious that the propeller blades mounted on the shaft will then be in a position to drive the boat straight ahead. To steer the boat either to the right or left, it is only necessary to adjust the platformv carrying the motor, so that the propeller blades willbe shifted either to the right or left'according to the direction that it may be desired to take. ln

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p order that the device-may not be turned to propell y the tilting' frame upon which the prime mover is mounted, and means for manually adjusting the platform whereby the ahead or to the right or left as may be required. l

2. In a device of the character described,

In La device of the character described,.

er may be swung to drive the boat' a prime mover, a propeller shaft operated by the prime mover, an air propeller carried by the shaft, a clamping devicel adapted to.

engaged tothe stern" of a boat, a tilting frame pivoted to the clamping device, means for securing the tilting framewhen adjusted, a swinging wardl f the ti ting frame, a suitable thrust bearing for the shaft carriedby the tilting frame, an arm secured tothe stub shaft for manually swinging the platform, and a pair of spaced abutments carried by the tilting frame for limiting the swinging action of the platform.

In testimony whereof, I cation in the presence of two witnesses.

CHARLES EDWARD RIEDEL. i

\ IVitnesses':

SAMUELE. THOMAS,

GRACE KYLE.

Iplatform havlng a down-l extendmg stub shaft journaled inl sign this specifi-y

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