US502910A - o brien - Google Patents

Description

` zen of the United States, residing at New York UNITED STATES PATENT QFFICE.

THOMAS oBRIN, oir-Naw YORK, N. Y.

a PRoPeLLER.

I SPECIFICATION forming part of Letters Fatent No. 502,910, dated August 8, 1893.

Application tied August 23, 1892. serai No. 443.855. (No mode.)

To @ZZ whom it may concern:

Be it known that I, THOMAS OBRIEN, a citi city, in the county of New Yorkand State of New York, have invented certain new and usefulIrnprovements in Propellers; and I do declare the followingto be a full,"clear, and exact description of the invention, such as will enable others skilled in the art to which it ap'- pertains to make and use the same.

My invention has relation to improvements in boats, and it has for its general object to provide a boat with a series of movable seats, and utilize the motion of said seats to drive a screw and propel the boat.

Other objects and advantages will be fully understood from the following description and claims when taken in connection with the annexed drawings, in which- Figure l, is a vertical, longitudinal section taken inthe plane indicated bythe line of Fig. 2. Fig. 2, is ahorizontal section taken in the plane indicated by the line sc, ofFig. l, looking downwardly.

In the said drawings, similar letters designate corresponding parts in both views, referring to which A, indicates the boat whichfis provided with a long overhanging stern A', to afford space for the propeller, and with a deep keel B, adapted to render the boat more steady and thereby reduce lateral movement, and consequent frictional wear of the swinging seats presently to be described.

Journaled in suitable bearings inthe sternV counter B4, and the plate B5, extending rearwardly from the heel of the keel is the rudder post F', to which the rudder F, is connected in any suitable manner. This rudder post F', is provided at asuitable pointin its length, preferably as shown, with a loose sleeve G', which has a forwardly extending branch G3, in which is journaled the rear end of the propeller shaft G.

Fixedly mounted upon the forward end of the shaft G, which extends vthrough the stern of the boat and is journaled in the bearings G4, H5, is a pinion H, which meshes with a gear wheel H', xed on a shaft H4, as shown. This shaft H4, also carries a beveled gear wheel H2, which meshes with a large beveled gear wheel H3, fixed on the transversely disp'osed drive shaft H8. Also fixed upon the 2drive shaft HS, is a crank wheel V, (illustrated in Fig. 2;) and to this crankwheel V, and the gear wheel H3, is connected the machinery for rotating the propeller G2, which machinery will be presently described,

The propeller G2 that I prefer to employ in conjunction with my improvements, comprises a series of screws G7, which are suitably fixed upon the shaft G, and increase in size gradually as they recede from the stern of the boat so that the small forward screw will reduce the resistance to the second screw and so on, whereby it will'be seen that less power will lbe required to rotate the propeller which vis a highly important desideraturn. The lblades of the screws G7, are pitched at an approximate acnte angle with respect to the shaft, as illustrated, and their ends are beveled inwardly and'forwardly as shown by reason nof which they will take into the water as a wedge and the resistance to the propeller will thereby be further reduced.

Suitably secured to the sides of the boat by straps C2, or the like, and rising therefrom, are a 'series of stanchions C, upon which is mounted a roof C', which is provided with suitable friction pulleys C4, for the passage of the rudder chain C3. This rudder chain C3, which is connected to the tiller F2, in the ordinary manner, takes around pulleys C7, and over the pulleys C4, and is wound upon the rotary drum O, as shown. This drum O,which is journaled in suitable bearings P, isprovided witha hand Wheel E, whereby it may be readily rotated to change the course of the boat when desired.

Extending transversely of the roof C', and preferably connecting the upper ends of Vthe stanchions C, as shown, are cross beams C?, to which arepivotally connected the swinging hangers D, o f the seats D'. Each pair of swinging hangers D, are connected, at about the point illustrated, by the cross bars D6, upon which the seats D', for the passengers are mounted, and the hangers on each side of the boat are connected by rods L, attached to the hangers by clips as L', so that the movements of the seats and hangers will be simultaneous. v

Taking around suitable pulleys D5, arranged adjacent to the sides and ends of the IOO boat and at the bottom thereof, are endless fulcrum or purchase chains to which the foot pieces D3, are connected, as better illustrated in Fig. 2, of the drawings. These foot pieces D3, of which four are preferably employed to each seat capable of seating four passengers, are respectively provided with an upwardly extending lever S, having a transverse hand piece D2, at its upper end for the grasp of the passengers. Each of the levers S, is connected to its respective seat by a link S', which is pivotally connected in a suitable manner to both the lever and seat so as to allow the levers and seats to swing in the manner presently set forth.

Flexibly connected by clips as L', or otherwise, to the rear hangers D, are pitmen K, which are pivotally connected at their opposite ends to crank pins K', on the wheels H3, V, respectively, so that when the seats are swung, the wheels will be rotated and the propeller will be set in motion.

In operation, the passengers upon the seats D', cause the same to swing in the well known. manner; and this swinging motion is converted into rotary motion through the medium of the mechanism set forth, to rotate the propeller and propel the boat. Thus it will be readily perceived that the boat may be propelled with but little exertion, and the occupants may enjoy the additional pleasure of swinging.

It will be seen from the foregoing description that the seats D', swing in the direction of the length of the boat. 'Ihis is advantageous for the reason that the seats may have a long movement, and consequently a large crank Wheel H3, may be employed and a great leverage exercised, which is an important desideratum.

Although I have in some respects, specifically described the construction and relative arrangement of the several elements of my improved boat, I do not desire to be confined to such specific construction and arrangement, as such changes or modifications may be made as fairly fall within the scope of my invention.

Having described my invention, what I claim is y l. In a boat, the combination with a rotary propeller, of a pendent seat u,hung from a suitable support and having a swinging movement in the direction of the length of the boat, and mechanism intermediate of the seat and the propeller, such mechanism being adapted to convert the swinging motion of the seat into rotary motion of the propeller shaft, substantially as specied.

2. In a boat, substantially as described, the combination with a rotary propeller; of a series of swinging seats; means for connecting the seats so that they will move together,an endless fulcrum or purchase chain; the levers connected to the chain and with the seats, and mechanism intermediate of the seats and the propeller, adapted to convert the oscillatory motion of the seats into rotary motion of the propeller shaft, substantially as and the purpose set forth.

3. In a boat, substantially as described,the combination with a rotary propeller; of the seats, the hangers suspending the seats, the rods connecting the hangers of the seats, the endless fulcrum or purchase chains, the footl rests connected to said chains, the levers connected to the foot rests, the links connecting said levers to the seats, and mechanism intermediate the seats and the propelleradapted to convert the oscillatory motion of the former into rotary motion of the latter substantially as specified.

In testimony whereof I atix my signature in presence of two witnesses.

THOMAS OBRIEN.

Witnesses:

CHAs. F. L. JUDESBERG, EUGENE SWEENEY.

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