US278027A

US278027A - Endless-band propeller

Info

Publication number: US278027A
Authority: US
Publication date: 1883-05-22
Anticipated expiration: 1900-05-22

Description

(No Model.) 3 Sheets-Sheet 2. M. J. LARSEN.

ENDLESS BAND PROPELLER.

No. 278,027. Patented May 22,1883.

172 veni'ar N4 PEYERS. Pholo-Lilholnphm', Washington. D. c.

(No Model.) 3 Sheets'-Sheet 3.

M. J. LARSEN.

ENDLESS BAND PROPELLER. No. 278,027. Patented May 22,1883.

x t I ,a I t 7 1 V 'V 'v' J u w A: A U U K 7 U U a? 5 an, 0 an, d

,9 a m M/ 4 n4 PETERS Phowum m Washington. D;

UNITED "STATES PATENT OF ICE.

MARTIN J nnnsnn, or CHICAGO, ILLINOIS.

ENDLESS-BAND PROPE LLER.

SPECIFICATION forming part of Letters Patent No. 278,027, dated May 22, 1883.

Applicatibn filed January 21,1882. (No model.)

To all whom it may concern Be it known thatI, MARTIN J OHANNES LAR- sEN, a subject of the King of Norway, now residing at Chicago, in the county of Cook and peller; and my invention consists in the construction of the propeller-band so as to avoid a multitude ot'joints, and in certain details of construction hereinafter fully set forth.

In the drawings, Figure 1 isv a side view of a vessel showing myimprovements. Fig. 2 is a longitudinal vertical section. Fig. 3 is an end view. Fig. 4. is a transverse section. Fig. 5 is a plan. Fig. 6 is a side view of avessel of slightly difi'erent construction. Fig. 'i is a transverse section of Fig. 6. Fig. Sis a longitudinal vertical section of Fig. 7. Fig. 9 is a side view and part section of one of the antifriction-roller chains and bearings. Fig. 10 is a transverse section on the line 1 2, Fig. 9, enlarged. Fig. 11 is a plan of the chain, Fig. 10. Fig. 12 is a side view, showing the mode of communicating motion from the engine to the propeller-b and. Figs. 13 and 14 are modifications of Fig. 12. Fig. 15 is a plan of part of the driving-chain. Fig. 16 is an enlarged section, showing a modification; Fig. 17, adetail.

My improved vessel consists, essentially, of a frame or body, a continuous flexible band passing round said frame, and provided with flexible edge flanges or hands flexibly jointed to the body-and carrying buckets or blades, and engines whereby the movement of the band around the body is imparted. These parts may be differently constructed, as I will now describe.

As shown in the drawings, the body A is a tank nearly rectangular in cross-section, with rounded ends and curved bottom and inclined sides an .r, haying side windows provided with side brackets carrying rudders K, and carrying suitable engines and boilers, the smoke .pipe or pipes B of the latter extending through the sides of the body and projecting upward. The band 0 consists of a central section, a, and side sections, 11 I), each being a-continuous band of steel, copper, or other flexible material, and the sections are united edge to edge, so as to normally lie in the same plane, by flexible strips, 0, ot'sprin gsteel, rubber, or other material, Fig. 16. The band encompasses the body A, as shown, and suitable friction'rollers are interposed, so that a movement of the band round the body may be imparted and maintained. The band lies flat upon the top of the body, all the sections in the same plane; but below the body the side sections are bent at an angle to the central section, a, forming inclined sides, which extend above the surface of the water to an extent proportioned to their width and the displacement of the vessel. As the band turns upward from the bottom toward the ends, the side portions, b, are brought gradually into the same plane as the central portion. Blades f .are secured to the band transversely, and the rapid movement of the band round the body while the vessel is floating in the water causes the vessel to move longitudinally, the blades acting as the floats of an ordinary water-wheel, but more eft'ectivein proportion as they remain longer in the water in a vertical position.

In place of using separate buckets bolted to the band, the latter, may be made of corrugated metal, the corrugations of which both serve as buckets and to impart such elasticity as will prevent binding.

Each section of the band may be made of i one piece of metal or of plates secured together.

Any suitable anti-friction devices may be interposed between the band and the body of the vessel. Those which I believe to be most effective consist of rollers F, Fig. 10, turning oncross-axles q, carried by flexible or jointed bands or chains t 1., thus forming a chain, G, of rollers, a suitable number of which chains are placed between the band and the body of the vessel, the latter being provided with rails P, and band with bearing-pieces P, which serve as bearings for the rollers. The chain of rollers is kept in place laterally by guiderollers g g, mounted to turn upon standards T, secured to the band, as shown in Figs. 9, 10, and 11.

To retain the edges of the section b in proper position,I slot the sections for the passage of rollers a, Fig. 16, turning on suitable axles,

the bottom of the vessel, and rollers a), turning on pins projecting from brackets H, secured to the bottom of the vessel-body, extend beneath the edges of the sections 1), as shown,

The band may be driven in different ways. I prefer to use a frictional connection between the band and the driving devices, as it will be attended with less risk of breakage. Thus chains of rolls G may extend round frames I, with rounded ends arranged above the central section of the band, so that thelatter will bear upward against said chains under the pressure of the water. These chains are driven by bands or belts N, (sprocket-bands being preferable, as shown in Fig. 15,) which extend round said chains and round the drivingwheels w, which are operated by the engines. These driving devices may be difi'erently arranged, as shown in the different figures.

Without limiting myself to the precise construction and arrangement of the parts-shown, I claim- 1. The combination, with the body ofa vessel, rounded at the ends, and having a bottom inclined at the sides, of a flexible band consisting of a central flat flexible section, a,

and two fiat flexible side sections, 1) b, hinged thereto longitudinally, with mechanism for driving said band round the vessel, substantially as set forth.

2. The combination of the body of the vessel and the flexible band, formed, asdescribed, of intermediate chains of rollers having their bearings upon the vessel and band, and movin g independently of the latter, substantially as specified.

3. The combination of the vessel, flexible band composed of parallel sections flexibly joined together, as set forth, and the rollers u and 11, substantially as'specified.

4. The combination of the vessel-body, sectional band, constructed as specified, and chains of rolls G,extending between the body and band and around round-ended frames 1, and driving belts or chains N, passing round the said chains of rolls G, between the same and the band, and round driving-wheels 70, substantially as set forth.

.M. J. LARSEN. Witnesses:

HUGH PEoPLEs,

. FREDRIK CHRISTIAN HOLBERG ARENTZ.