US312381A

US312381A - Marine speed propeller

Info

Publication number: US312381A
Authority: US
Publication date: 1885-02-17
Anticipated expiration: 1902-02-17

Description

(No Model.) 2 Sheets-sheet 1.

J.Is.'1 osT.

MARINE SPEED PROPELEEE.

Patented Fab. 17, 1885.

WITNESSES INVENTOR J'SZPOS. Mmc

By Emmy @n ms 2^ f (No M0891.) 2 shee1s-s`heet 2.

J. S. POST.

MARINB'SPEBD PRUPELLBR.

110.812.881. y Patented Feb. 17, 1885.

INVENTOH J'. f6'. Posh By 7221s ./ttorneys Z 52A N. PETERS1 Pham'uxhogmpher. wnmugwn. Dlc.

rio

IINTTEE STATES PATENT OEETCE.

JUDSON S. POST, OF ST. LOUIS, MISSOURI.

MARINE SP'EED-PROPELLER.

SPECIFICATION 'forming part of Letters Patent No. 312,381, dated February 17, 1885.

(No model.)

To all whom, t may concern,.-

Be it known that I, JUDSON S. POST, a citizen of the United States, residing at St. Louis, in the county of St. Louis and State of Mis souri, have invented certain new and useful Improvements in Marine Speed-Propellers; and I do declare the following to be a full, clear, and exact description of the invent-ion, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this speci ticati on.

Figure 1 of the drawings is a side view of my device. Fig. 2 is a transverse sectional view of the same. Fig. 3 is a transverse sectional detail view. Fig. 4 isasideview. Fig. 5 is a detail view. Fig. 6 is a transverse sectional detail view, and Figs. 7, S, 9, and l0 are detail views.

rlhis invention has relation to the propulsion of boats; and it consists in the construction and novel arrangement ot' devices, as hereinafter set forth, and pointed out in the claims appended.`

In the accompanying drawings, the letter A designates the hull of a steam-vessel.

B represents a vertically-adj nstable fulerumshelf, connected to the vessel on each side.

C indicates the folding paddle, which has its bearing in the fulcrum shelf', and D the rotary transmitter or triple wheel, whereby power is transmitted from the propeller-shaft E or other rotary shaft operated bythe steamengine, or any other motive power, to the paddles. The propeller-shaft is the most convenient bearing for the belt-pulley which operates the transmitter. In some vessels, however, and in boats of limited size. rotation may be communicated to the transmitter by anypower at hand.

The fulcrum-shelf B may be inade of wood or metal. For a steam-vessel it should be made of metal and strongly constructed to withstand all strain. work horizontal portion or shelf proper and the vertical brace portion connecting the shelf to the slide-bar F, which engages a well-bearing, G, sunk in the ship in the vertical direc- It consists of the opention. The shelf B is an open frame-work of great strength, having a central longitudinal slot or opening, a, under the middle portion of which extends, from front to rear, afulcrumhearing, b. is at the side ofthe vessel, just above the water-line, and it should be adjusted to this position before leaving port. The shelf is connected to the vertical portion or holder H by means of the sliding rods. tubes, or columns K, which pass vertically through bearings c of the shelf, and through bearings o of the holder plate or frame H, to which the slidebar F is connected. The shelf is made adjustable on the guide rods or tubes K, and is held in'position by means of pins d, passing through perforations d in said rods or tubes after adjustment. The holder and its guides are :made of some extent, in order to distribnte the strain that may be brought upon them by the working-paddles through thel shelf. The fulcruin bearing I) on which the pair of folding paddle-sections works runs parallel to the central vertical plane of the vessel, being, however, slightly inclined outward aft, to influence the paddle-blades below, while working, to force the water outward from the hull. The depth of the bar D is greater than its thickness, and from its upper edge it extends downward on each side, curving so that it is narrower at its lower edge. This fule-rumbar is on each side clear of obstruction for a distance equal to the breadth of the paddle-blade, so that the folding paddle can be passed downward astride of the bearing, its blades respectively passing through the openings at the sides of the bar. Its vertical extension is designed to prevent the paddle from swaying out of its oscillating course during the rolling of the vessel. bar is about the middle of the shelf, or sufficiently far toward its outer edge to obviate any danger of the open vpaddle fouling with the hull of the vessel. The pulley-blocks f,

The location of the fulcrum-shelf The location of the fulcrum- 9o through which the wire or other ropes, called 9 5 IOO be arranged on a level, or nearly so, with the points of connectionl to the paddle-arms when at the extreme endsof their oscillating movements, the pulley aft being usually somewhat lower than its mate forward to allow for the downward turn of its paddle-arms. Except to provide surface-protection for the paddles, it is not necessary to extend the shelves outward from the vessels hull much beyond the fulcrum-bearings.

The folding paddle C may be made of wood, iron, steel, or other proper material. When made of metal, the blade portions should be longitudinally corrugated to give the fullest strength with theleast weight and flexibility'.

The folding paddle consists, ostensibly, of two paddles or paddle-sections, C', which are permanently connected together by hinge, or link connections. In their lower portions, below their fulcrum-rests, the paddle-sections are entirely disconnected.4 Iny the larger sizes t-he upper or body portions, g, of the paddles are made separate from the blade portions h, and they are secured together by bolts, rivets, or screws. The body portions of the paddlesections are formed with horizontal rounded or rolling bearings lc on their inner or contiguous edges. The upper bearings k are a little larger than the lower bearings, being so made in order to incline the blades below`toward each other. These bearings and the connecting devices permit a freelateral swinging movement of each section to the extent of a quarter of a circle. This movement is checked when the blades are opened by the hinge-con,- ncctions and the abutting edges of the body portions of said sections. Vhen the blades are closed, the closing movement is checked by the connections and, by the stress of the water through which the blades are moved. The shoulder-bearings respectively merge into each other, as shown. Each paddle-section is provided with an arm, G', which extends outward horizontally at right angles to the length of the paddle and in the plane of its breadth. Each folding paddle can be raised from the fulcrum-shelf on board the vessel at any time, and can be easily lowered in position to bear nponthe saddle-bar b.

The connections with the driving mechanism are made through the arms G', whose leverage is such as to effect the opening and closing of the paddle-sections, the operation of the arms beingsupplementedby the action of the water, which as the blades are moved forward tends to close them, and as they are moved backward to force them open. The movement of the paddles backward and forward is communicated from the shaft of the propeller, or other shaft operated by a steamengine or other ,motive power in larger vessels, through a rotary transmitter, D. The transmitter is strongly made of wood, iron, steel, or other metal, and its proportions depend on the work required, the diameter of the rotary wheel depending, however, in all cases upon the distance traversed by the points of attachment of the motor-connections to thearms of the paddle-sections. The position of each transmitter is between the brace of paddles on opposite sides of the ship with which it is in connection. It is located in the central line of the ship, fore and aft, and the Wheel is axially mounted athwart ship, so that it revolves at right angles to the plane of the keel. A belt passing from a pulley, H', on the propeller-shaft over the pulley-bearing I of the transmitter communicates motion thereto. By shifting the belt to a loose pulley, which may be on the propeller-shaft, the rotation of the transmitter may be stopped. This transmitter or triple wheel works in strong bearings bolted to the ships deck-timbers. Its middle portion is a broad pulley, I, on each side of which is a pulley, K', having guide-flanges. The interval between the said flanges on each side of the middle or belt bearing is comparatively small, being only sufficient to afford play for the small pulleys pp, which are seated in bearingsnearthe margins of the disks. Each pulley K consists, therefore,of the rotating disks and the pulleysp p, which are arranged at the opposite ends of a diametrical line; but in one of the pulleys K this diametrical line is at right angles to the line connecting the pulley-bearings p p of the other pulley K. Above the triple wheel are placed, in bearings of the transmitter-frame, take-up rollers L, which may be provided at their ends with ratchet-wheel and pawl holding devices. From one of these rollers extends the wire or other rope, called rein,7 a', downward between the rim portions of the front wheel-pulley K', over its pulleys p p and through guiding-pulleys o, securely fastened to the deck and guards of the vessel. in proper position, to the fulcrum-shelf, where it engages the front pulley of said shelf, and, passing backward, is connected to the arms ofthe paddle-sections. By means of thisrope or rein the paddles are moved to force their blades backward in the' water and at the same time to open them. From the other roller a similar rope, z, passing down between the rim portions of the rear pulley K', engages its pulleys p p, and thence passes through guiding-pulleys o, fastened to the vessel, to the rear pulley of the fulcrum-shelf, whence it extends to the arms of the paddle-sections,to which it is fastened in rear. By this rope or rein the paddle-blades are moved forward in the water and closed. Jointed connections w are fastened to the ends of the ropes or reins a and z, and connect them to the ends of the paddle-arms, which regulate their opening and closing when working. Tubular guides or other covering devices should be employed to prot-ect the operating-ropes where they are exposed on the deck. When the triple'wheel is rotated, the diameter bearings or pulleys p p of the front and rear pulleys K' will pass alternately from the horizontal to the vertical position, and onward from the vertical to the horizontal posi- ICO IIO

tion continuously. By this movement the ropes or reins a and e are alternately drawn upward from the deck-guides, and therefore act alternately to pull the upper portions of the paddles forward or backward. At'the same time one of the diameter-pulleys is moving toward the horizontal position, taking up the ropes c, the other one is moving toward the vertical position and thus paying out the ropes z. So in the next quarter-revolution of the transmitter the ropes z are taken up and the ropes a paid out In this manner the transmitter operates to give two complete strokes of the paddles at each revolution.

I prefer in large vessels t0 make the holder H adjustable, as hereinbefore described, so that when the vessel is in port said holder, with its fulcrunivshelf and paddle, can be elevated as high as may be desirable. For this purpose strong stanchions M are provided, extending vertically from the edge of the upper or spar deck, to afford bearings for pulleys l), over which extend the hoisting rope or chains N, which are connected with the holder I'I by passing through pulleys R in Fig. LI. The hoisting wire, rope, or chains may be operated by windlass or strong ratchet-wheel and pawl, Y, Fig. 10, water-tight wells G, in Fig. 2, extending down vertically inside and adjoining the ships side from the upper or spar deck, to engage and hold the tang or slide-bar of the paddle-fulcrum shelf-holder, of proper size and shape for easy vertical movement of said tang or sliding bar,when rei quired. Vith said vertical stanchions are davits at fore and aft end of said wells, topped by pulleys, and grooved for secure vertical sliding of said tang-bar.

Having described this invention, what I claim, and desire to secure by Letters Patent,

1. The folding paddle consisting of lateral sections having disconnected blades and hinged or link connected upper portions formed with upper and lower rounded bearings, fulcrumshoulders, and arms extending outward in the planes of the blades at right angles to their length, substantially as specifled.

2. rIhe fulcrum-shelf having alongitudinal opening, provided with a fore and aft saddlebar or fulcrum-bearing extending downward to keep the paddles true, and the transverse chucks in front and rear of said opening, substantially as specified.

3. The rotating triple wheeltransmitter having a middle pulley-bearing for a drive-v belt, and on each side thereof a pair of guidedisks between which are diametrically-opposite pulleys, near the rims thereof, the diameter connecting the pulleys of one wheel being at right angles to the diameter connecting the pulleys of the other wheel, substantially as specified.

vet. The combination, with the triple wheeltransmitter, of the ropes connecting the same to the paddle-arms, the paddles, and the fulcrum shelves having fore and aft pulleys through which said ropes, called reins, pass.

5. The combination, with a brace of folding paddles adapted to vibrate one on each side of a boat, of a rotary transmitter engaging by diameter-bearings the forward pulling ropes or reins, a, and the rearward pulling ropes or reins, z, to tighten these ropes alternately while paying out the loose ropes, to effect the Vibration or oscillation of said paddles, substantially as specified.

6. rI he combination, with the rotary trans- Initter and the vertically-adjustable fulcrumshelf, of a folding paddle, its front rope, a, and rea-r rope, z, and the take-up rollers seated iu bearings of the frame of the transmitter, substantially as specied.

7. A boat provided with a-brace or braces JUDSON S.

lVitnesses:

LOUISE E. DAvENroRT, JULiUs B. CURTis.