US1217828A

US1217828A - Hydroplane.

Info

Publication number: US1217828A
Application number: US8314116A
Authority: US
Inventors: Carleton Ruhe
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-03-09
Filing date: 1916-03-09
Publication date: 1917-02-27
Anticipated expiration: 1934-02-27

Description

C. RUHE.

HYDROPLANE.

APPLICATION FILED MAII. 9, Isls.

Patented Febfz?, 1917.

2 SHEETS-SHEET l C. RUHE.

HYDROPLANE. APPLICATION FILEIJ MAR. 9, I9I6.

Ptentd Feb.27,1917.

2 SHEETS-SHEET 2.

TQE.

CARLETON RUHE, OF CLEAN, NEW YORK.

HYDBOPLANE.

Specification of Letters Patent Patented Teb. ai?, ier?.

Application filed March 9, 1916. ASerial'lio. 83,141.

My inventionrelates to improvements in" hydroplanes. y

An important object of the invention 1s to so construct the hull ofthe hydroplane that thefrictional resistance that the same Aencounters with the water will be reduced to the minimum whereby the hydroplane can obtain a high speed.

A further object of the invention is to provide means for supplying gas or air between a portion of the hull of the hydroplane and the water, thus reducing the friotion between the same.

A further object of the invention is to provide a vhydroplane of the above lmentioned character, which is not liable to oapsize, and which may be properly steered in a convenient manner.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specication and in which like numeralsy are employed to designate like parts throughout the same,

Figure 1 is a side elevation of a hydroplane embodying my invention,

Fig. 2 is a longitudinal sectional view taken on line 2-2 of Fig. 4,

Fig. 8 is a transverse sectional view taken on line 83 of Fig. 1, f

Fig. 4 is a plan view of the machine,

Fig. 5 is an end elevation of the same, and,

Fig. 6 is a transverse sectional view taken on line-6 6 of Fig. 1.

Tn the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 10 designates a hull of the boat, as a whole, which has a substantial width and is provided with a forward pointed end 11, las moreclearly shown in Fig. 4. .The hull 10 has a forward bottom portion 12 and a rear bottom portion 18. The forward bottom portion 12 is substantially V-shaped in cross-section, and tapers downwardly, as clearly illustrated in Fig. 8. The rear bottom portion 13 1s offset upwardly with respect to the forward bottom portion 12 at a point approximately equidistantly spaced from the ends of the hull 10, providing a shoulder or step 14, as shown. The rear bottom portion 18 is curved in cross-section, as more clearly shown in Fig. 5, and has its concave surface arranged lowermost.' This curved rear bottom portion 13 is provided at its longitudinal edges with flat portions or' runners 15, which are inclined downwardly longitudinally toward their rear ends, the curvature of the bottom Yportion 18 decreasing toward its forward end or the step 14, at which point it is substantially fiat,as shown. Y

The hull 10 lis provided in its top with an opening 16, receiving a suitable high power engine 17,' mounted upon a frame 18 and rigidly held thereby, in place within the hull." This engine embodies a crank shaft 19, connected with speed increasing transmissiongearing (not shown) in a gear case 20. This transmission gearing 1s connected with and drives a propeller shaft 21, which is slightly inclined and extends longitudinallyV of the hull, at the longitudinal axis thereof. The shaft 21 is journaled through a bearing 22, at its rear end, carried by a bracket 28, which is rigidly attached to the rear end of the rear bottom portion 12, as shown. Connected with the rear end of the shaft 21 is a propeller 24, as shown.

The numeral 25 designates a rotatable or turbine air pump, of any well known or preferred construction, preferably of the type shown and described in my co-pending application for air pumps, filed December 21, 1915, Serial No. 68,010. Thisturbine is Y `mounted withinthe forward portion of the hull 10 and has its fan orfans driven by the propeller shaft 21. It might vbe stated that the transmission gearing 20 is adapted to step up the speed of rotation of the engine, whereby the shaft 21 is driven at ahigh speed, such as 2,000 revolutions per minute. The casing of the air pump 25 has connection with suction or inlet pipes 26, carried by branch pipes 27, connected with the exhaust manifold pipe 28 of the engine 17. Connected with the pump 25. `are gas outlet pipes 29, which are preferably formed of flexible hose. These outlet pipes are connected with pipes 80, extending through the offset portion 14, and discharging gas beneath thebottom 18, upon opposite sides of the propeller 24, as shown. It is thus apparent" that this gas will form a blanket or sheet between the bottom 18 and the water, serving to lubricate the same and reduce the friction.

rlhe steering of the boat is accomplished by means of direction rudders 31, rigidly mounted upon vertical shafts 32, journaled through bearings 33, rigidly attached to the rear end of the hull. The upper ends` of the shafts 32 have rigid connection'with cranks 34, which are connected by a pitman or'rod 35, which may be moved by any suitable means.

ln operation, the rotation of the crank shaft 19 of the engine 17 is increased and transmitted to the propeller' shaft 21, causing the propeller 2a te effect the longitudinal travel of the hydroplane. The exhaust from the engine passes through the pipes 2G inte the pump 25, and is forced thereby through pipes 29, and pipes 30 into the space beneath the bottom 13. As the speed of the hydroplane increases the hull tends to rise from the water, providing a passage between the bottom 18 and the surface of the water into which the gases are forced, form ing a blanket or film between the bottom portion 13 and the water.

It is to be understood that the form of my invention herewith shown and described is to be-taken as a preferred example of the same, and that Various changes in the shape, size, and arrangement of parts may be resorted to without departing` from the spirit of the invention or the scope of the subjoined claim.

" Having thus described my invention, l claim:

A boat hull, comprising a forward bottom portion formed substantially V-shaped in vertical transverse cross-section and tapering downwardly, the V-shaped bottom portion being inclined upwardly toward its forward end, a rear bottom portion disposed in a plane above the forward bottom portion and formed curved in Vertical cross-section with its concave surface arranged lowermost for providing an air passage, the edges of the curved rear bottom portion extending downwardly toward the rear end of 'the hull so that the rear end of the air passage is permanently open, means to introduce gas into the air passage, and propelling means for the hull.

1n testimony whereof l afliX my signature in presence of two witnesses.

CARLETON RUHE.

Vitnesses CREIGHTON S. ANDREws, MATILDA l/V. AUERBACH.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.