US1052949A - Sinusoid propeller. - Google Patents

Description

-1. J. MDDCGK. y SINUSOID PBOPBLLER.

APPLICATION FLBD DEU. 31, 1910.

Patented Feb. M, 1913.

2 SHEETS-SHEET 1.

' /1 TTOR/VE V 8 I. J. PADDOCK.

SINUSOID PROPBLLER.

APPLICATION FILED 11110.31, 1910.

Patented Feb.11,1913.

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IBA PADDOCK, 0F CITY, NEBRASKA.

s'INUsoI-D'v rnorELLEn To all whom it may concern:

Be it'lmown that I, IRA J. PADDocK, a citizen? of the United States, and a resident of Nebraska City, in the county of Otoe and State of Nebraska, have made certain new and useful Improvements in` Sinusoid Propellers, of which the following is a specifica-4 tion. I'

My invention relates to improvements in propellers, and it consists in the combinations, constructions and arrangements herein described and claimed.

My invention is based upon the fact thatI when a iexible surface, such as a sheet of fabric, is held at one edge in a current of air or other medium which is traveling in a direction parallel to the normal plane of the sheet, the latter will have imparted to it a series of wave-like motions. These waves follow each other in rapid succession and have the form of asine curve. Parts of the sheetwill be moving upwardly, and other parts ofl the -sheet will be 'moving downwardly.

An object of, my invention is to provide a device bv mea of which the wave-like movements of tl sheet may be utilized for generating power.

A further' object lof my invention is to provide a novel form of mechanism for transmitting power to a common shaft.

n Other ob]ects and advantages will appear' in the following specification, and the novel features of the device will beparticularly pointed out in they appended claims.

My invention is illustrated in the accompanying drawings, in which- Flgure 1 is a side view of the device, and Fig. '2 is a perspective view showing lthe position of the sheets when in operation.

Referring now particularly to Fig. 1, it will be seen that I have provided a main frame consisting ofthe uprights land 2, a bttom member 3, and a top member 4. Disposed in the bottom and top members 3 and 4 are a series ofslidable rods 5 and 6. These rods are arranged in pairs as .will be seen. The upper ends of vthe rods 5 are connectedby pitmen 7 -to a common crank shaft 8which is carriedby bearings 9 secured to the frame member 4. As will be seen from the drawing, the adjacentpitmen 7 are connected to the crank shaft at points 90o apart. The rods 6 are. connectedby pitmen 10 with a co'mmon crank shaft 11 which is carriad by supports l2fsecured/to Vthe frame member 3. As in the case of the pitmen 7 the adjacent pitmen 10 are connected to thecrank shaft 11 atl points 90 apart.

Secured to the'frame member 1 is a series of sheets 13 and 14. In Fig-1, which is a side view of the device, the edges of these sheets are seen. The ends of the sheets opposite the frame member 1 are. secured to the frame member 2 bya series of springs. Each of the sheets 13 is secured at equalfdistances apart to the rods 6, while the sheets- 14" are secured to the rods', as shown in Fig. 1.

Fro theforegoing description of the various arts of the device, the operation thereo may be readily understood.

It will be understood that the op osite ends of the sheets are in a similar ame and that the two frames are connected together. If now a current of air should m ove through the device in the direction indlcated by the. arrows in Fig. 1, the sheets will be given a sinusoidal movement like that shown in` Fig. 2. In this figure any given sheets 13k and 14 are nearest together at the points at fw they are separated from veach other; at y they are farthest apart. It will be understood that this view shows the position of the sheets at any given moment of time, for in accordance with the sinusoidal movement the points may move so as -to be the maximum distance from each other in any given sheets 13 and 14. In

- rods 5 and 6 which are connected at the ends ofthe sheets as stated. These rods im- "part motion to the shaftsv 8 and 11 and the power derived therefrom may be used for any useful purpose.

The propeller may be used for driving purposes as well as for being driven by air currents. With the propeller as described, the rotation pf the shafts llfand 8 would cause a reciprocation of the rods 5 and 6 so as to give the sheets 13 and 14 a 'sinusoidal movement.

Referring again to Fig. 2, it will be seen l speeiacaa'on of Letters raient. Patented Feb, 11, wf. Appunti@ med ,December a1, 1910. serial no. 600,220.

that air may be entrained at one end of the device, as for instance, at the left hand sfde of the ligure, and may be forced in the direction indicated by the arrow somewhat in the manner of swallowing. This would tend to drive any device such as an aeroplane, forwardly in. the direction opposite to that in 'which the air is forced.

It is obvious that this same device might x be used mother-connections and with other i media than air. The same rinciple might be applied to a structure deslgned to propel a boat.v Inthe latter instance, the reaction afforded by the rearward drive of. the Water would propelthe .boat forwardly. I am aware that other devices based on the same general principle might be made,

but I consider as my own all such modifications as fairly fall within the spirit 4 and scope of the invention.'

1. In a propelling device, a frame, a series of sheets loosely carried thereby, means. for imparting a sinusoidal wave movement lto each sheet, the sinusoidal wave movement of one sheet ,di'ering in phase by half a period from the wave movement of the adjacent sheet-on either side.

2. In apro elling device, va frame, a series of sheets oosely carried thereby, means for imparting a sinusoidal wave movement to each sheet, the sinusoidal wave movement of one sheet vdiil'ering in phase by half a period from the wave movement of the adjacent sheet on 'either side, and each sheet co-v operating with the sheets on either side or exerting a propelling force in ries of sheets looselycarried lin said lframe andl'langed to receive a *sinusoidalmovement, a'fseries of rodsjorriedby said frame,

necting each rod with one of ysaid lcrank shafts for imparting movement Ato the latter.

4. In av propelling device, a frame, a seriesof flexible sheets secured to said frame vat one end, thetopposite end of saidV sheets being secu-red to the frame 4by means "ofsprngS, a shaft carried by said" frame on eachlside thereof, a series of pairs of reciprocating rods, each rod oi a pair being connected to alternate sheets, and meansV connected to each of said rods for imparting movementto one of said shafts.

5. In apro elling device, a frame, a series of sheets oosely carried thereby, means for'imparting a sinusoidal wave movementY to each sheet, and each sheet coperating,N

with the adjacent sheets on each side thereof for exerting a propelling force in the same direction.

.- l IRA J. PADDOCK.

`V-Vitnesses: i

WILSON,

y.. B. R. ALLnN.

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