US1557990A

US1557990A - Boat

Info

Publication number: US1557990A
Application number: US754147A
Authority: US
Inventors: Fred D Doty
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-12-05
Filing date: 1924-12-05
Publication date: 1925-10-20
Anticipated expiration: 1942-10-20

Description

BOAT

Filed Dec, 1924 Z B Q 7 6 2 Mm 1 a a 5m 2 Q2 1 l fi AW WITNESSES ATTORNEYS Patented (Jet, 20, 1925.

1,557,990 1" OFFICE.

FRED D. DOT'Y, OF Nl'iltlif ORLEANS, LOUISIANA.

BOAT.

Application filed December To all whom it may concern:

Be it known that I, Fnno D. Do'rY, a citizen of the United States, and a resident of New Orleans, in the parish of Orleans, State of Louisiana, have invented certain new and useful Improvements in Boats, of which the following is a specification.

This invention relates to an improvement in boats of the paddle wheel type and aims to provide a boat of this character wherein the vanes or paddles of the wheel dip into and out of the water edgewise in the manner of the two cars of a row boat thereby eliminating vibration, drag and sidewash, enabling a rapid rotation of the wheels to be maintained without lifting the water and without depreciating the eli'ective propelling power of the wheel.

A further object is to provide a boat of this character wherein a plurality of paddle wheels of the character specified are organized with a specially constructed stern in such a novel and peculiar manner as toiiupart to the boat a high degree of maneuvering power thereby enabling the boat to turn in its own length, pursue a zig-Zag or tortuous course, twist itself off of a sand bar or the like.

A still further object is to provide a boat having these advantages and capacities and wherein both the speed and pulling power of the boat is enhanced to a marked degree.

Other objects and advantages of the invention reside in certain novel features of the construction, combination and arrangement of parts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings forming part of this specification, and in which:

Figure 1 is a fragmentary plan view of a boat constructed in accordance with the present invention, and

Figure 2 is a view in section on line 2-2 of Figure 1.

Referring to the drawings, the numeral 10 designates the hull of a boat embodying the present invention, the hull having an exte ided stern 11 provided with rearwardly tapering or converging sides 12. At its extreme rear "end the extended stern 11 is provided with a transversely extending framework .13 which provides a support for the rear end of bridge members 1 1, the forward 5, 1924. Serial No, 754,147.

end of which bridge members are supported upon the hull of the boat.

A plurality of paddle wheels designated generally at 15 are mounted on the extended stern of the boat, the paddle wheels being arranged in pairs with the members of each pair disposed on the opposite sides of the extended stern, and with the paddle wheels operating in the spaces between the rearwardly converging sides 12 and the bridge members 14.

Each paddle wheel 15 includes a shaft 16 which is inclined with respect to the loiigitudinal axis or center line of the boat, but which is disposed at right angles to the rearwardly converging side 12 withv which it is associated. Each shaft 16 is also inclined with respect to the horizontal. As shown in the drawings the highend of each shaft.

journaled in a suitable bearing 17 provided on the bridge member 14- with which it is associated, and the lower end of each shaft is journaled in a bearing 18 provided on the side 12 of the extended stern with which it is associated. The inner and lower 51 ends of the shaft are located within the extended stern. On each shaft- 16 a pair of hubs 19 are secured, the hubs being spaced along the shaft and each hub carrying a plurality of radially extending arms 20. On the outer ends of the arms, paddles or blades 21 are provided and are substantially flat and rectangular in form.

Suitable means is provided for independently driving the paddle wheels on either side of the boat so that the paddle wheels on one side may be rotated in one direction while the paddle wheels on the other side are being rotated in an opposite direction, or so that the paddle wheels on one side may be rotated and the paddle wheels on the other side left idle. For this purpose two independently driven shafts 22 are provided and are journaled in suitable bearings 23 provided on the extended stern, the shafts 22 extending parallel to the tapering or converging sides 12 of the extended stern and being geared as at 24 to each of the shafts 16. It it to be understood that while a worm or worm wheel is shown at 24 for rotating the shafts 16 from the shafts 22 any suitable type of gearing may be employed for this purpose. Any suitable means may be em ployed for independently driving the shaft 22 and such means may include one or mor power plants or motors of any suitable type, the motors being mechanically connected with the shafts 22 with any preferred form of motion transmission means. As shown a separate crude oil engine, designated generally at 25, is provided for each shaft 22.

lVith this arrangement the vanes or paddles of each paddle wheel dip into and out of the water edgewise in the manner of the two oars of a row boat, thereby eliminating vibration, drag and sidewash, especially side wash to the banks of canals, the water from beneath the bottom of the boat passing out smoothly under the extended stern instead of being drawn by a screw propeller or paddle wheel across the stern of the boat and tending to form a vacuum. The elimination of side wash results largely from the fact that the water displaced by the paddle wheels is directed rearwa ally and inwardly across the extreme rear end of the stern to form a ridge oi water compensating for the water displaced by the boat. Consequently, the stern does not squat as the drag is entirely relieved. Moreover the vanes or blades of the paddle wheel do not slap or strike the water broadside but enter and leave the water cleanly so as to eliminate vibration. The paddle wheels may be rapidly rotated without lifting water and without depreciating the effective propelling power of the paddle wheels. The water quiets down after the wheels, and there is no sidewash to the banks, .This is an important feature as the sidewash of the old paddle wheel type of boat tending to destroy or break down the banks of the river or any levees that may have been constructed along the river banks.

The maneuvering power of the boat is greatly enhanced and the boat may turn in its own length, pursue a Zig-zag or tortuous course or twist sharply in working oil a sand bank. The extended stern is preterably housed over as indicated at in Fig. 2.

I claim:

1. In a boat of the character described, a hull having an extended stern, the extended stern havin a central body portion provided with rearwardly tapering sides, a framework encircling the extended stern and having rearwardly converging side members, and paddle wheels between each side 01 the extended stern and each side member of the framework, each paddle wheel including a shaft inclined upwardly, outwardly and rearwardly, radial arms carried by the shafts and flat paddles carried by the arms.

2. In a boat of the character described, a hull having an extended stern, the extended stern having a central body portion provided with rearwardly tapering sides, and a plurality of paddle wheels mounted on the boat for rotation about an axis extending at right angles to the tapering sides of the extended stern.

In a boat of the character described,a hull hav' 1g an extended stern, the extended rn has a central body port-ion 'proled with rearwardly tapering sides, a plurality of paddle wheels mounted on the boat for rotation about an axis extending at right angles to the tapering sides of the extended stern, and means for independently driving said paddle wheels.

FRED D. DQTY.