US639704A - Dumping-scow. - Google Patents

Description

(No Mndel.)

. c. c. uwEns.

DUMPING SCOW.

(Application led Jan. 17, 1899.)

4 Sheets-Sheet 2.

mmv ron Patented Dec. 26,. |899. A

No. 639,704. 'y Patented Dec. 26, |899. C. C. BOWERS.

DUMPING 860W.

(Application filed Jan. 17, 1899.)

(No Modal.) 4 Sheetsv-Sheei 3.

No. 639,704. Patented Dec. 26, |899.

C. C. BOWERS.

DUMPING SCOW.

(Application filed Jan. 17, 1899.)

4 Sheets-Shut 4.

(No Model.)

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CHARLES ORAMP BOWERS, OF ELIZABETH, NEXV JERSEY, ASSIGNOR TO FRANCIS B. DELEHANTY, OF NEW' YORK, N. Y.

DulvlPlNc-soow-l SPECIFICATION forming part ef Lettere Pet-ent ne. 639,704, dated neeembet 2e, ieee.

Application filed January 17, 1899. Serial No. 702,488. (No model.)

To all whom t may concern:

Be it known that I, CHARLES @RAMP Bow- ERS, engineer, of Elizabeth, New Jersey, have invented certain new and useful Improvements in Dumping-Scows, of which the following is a description, referring to the accompanying drawings, which forma part of this specification.

The invention relates most particularly to the class of dumping-scows which is exempliiied in the patent to Daniel Delehanty, No. 542,408, of July 9, 1895, and assuming that the read er is familiar with that class of scows the explanation of the present invention will be facilitated. Where several dumping-pock- 'ets are arranged in a row on such a scow, it is convenient to be able to dump the pockets severally or all together. The doors, which form the bottoms of the pockets, are usually hinged at the sides and come together at the center of each pocket, so that when they are dropped the Whole bottom of the pocket is open.

Part of the present invention contemplates mechanical hoisting devices for raising and closing the doors and for sustaining the Weight of the material in the pockets when the doors are closed.

Another part of the invention contemplates peculiar bracing, so as to enable the scow to withstand the strains due to the weight of material resting upon the doors.

A third part of the invention contemplates a novel and convenient manner of storing away the slack chain or rope.

The nature of the invention is such that it Will best be understood by describing one preferred embodiment of it, which is illustrated in the accompanying drawings.

Figure 1 is a transverse cross section through the scOW. Fig. 2 is a plan View with the upper deck partly broken away to shoW certain details and With two of the hoisting devices removed. Fig. 3 is an end view of one of the hoisting devices looking along the main shaft. Fig. 4 is an opposite end view of the same. Fig. 5 is a plan view; and Fig. 6 is a front view, partly in section.

Throughout the drawings like numerals of reference indicate like parts. 'The particular form of the scow selected for illustration is of the double-pontoon or catamaran type. The two boats or pontoons are shown at 10. The interval between the two pontoons is occupied for at least a portion of the length of the scoW by a plurality of pockets 1l for the garbage, ashes, or other material to be carried. The side walls of the pockets 1l are inclined or overhangthe pocket slightly, so as to facilitate the discharge of the contents of the pocket when the doors at the bottom are open, and to this inclination of the Wall of the pocket the peculiar system of bracing which I am about to describe has a particular relation. The doors l2, hinged at either side of each pocket, form the bottoms of the pockets. The doors are each supported near their meeting edges at two points 13 by means of four chains 14, which run to the common point or link 15 and are connected with the hoisting-chain 16, of which there is y one for each pocket or bin passing up through or over the side of the bin opposite the center. The dotted lines in Fig. 1 shoW the po.- sition of the chains When the doors are dropped fordumping. Chain-hoists or Wildcat mechanisms are placed centrally for each pocket, so as to act centrally upon the chain 16 and the four chains 14.. These hoisting mechanisms are preferably placed along one of the upper decks 2O and are connected with the main or counter shaft 18, which is driven from the engine 19 or other source of power. Each of the hoisting mechanisms 17 is connected by powerful reduction-gearing to the shaft 18 by a clutch, so that it may be connected and disconnected at will. The details of the preferred form of the hoisting mechisms which I have designed are shown in Figs. 3 to 6, inclusive. At 31 is the Wildcat or hoisting-drum, which is litted to the links of the chain 16 and which turns on the shaft 32. A stripper 33 is provided, which insures the stripping of the loose portion of the chain from the Wildcat 31, so that itWill clear itself from'the Wildcat and fall into the upright column 50, (see Fig. 1,) which forms a receiving-chamber for the chain, as will be presently described. The Wildcat 31 is actuated by double reduction-gearing from the shaft 18. The reduction-gearing shown consists of a Worm- Wheel 34, actuated by Worm 35,Which is in turn IOO actuated by the worm-wheel 36 and coperating worm 37. The worm 37 turns loosely upon the shaft 1S and is provided with or turns with one part of a clutch. It is also provided with an annular brake-bearing 39 upon which the brake-shoe 40 acts. The other part 41 of the clutch turns with the shaft 1S, but is splined to move longitudinally upon the shaft into or out of engagement with the part 38 of the clutch. A hand-lever 4:2

is connected to actuate simultaneously the clutch member 41 and the brakeshoe 40, so that by throwing the hand-lever 42 to the left of Fig. 6 the brake-shoe will be raised and the clutch thrown in gear, causing the shaft 18 to actuate the Wildcat 8l, and thereby raise or lower the doors 12 by means of the chains 16 and lli. As each one of the Wildcats has its separate controlling-lever 42 it is clear that all of the doors may be operated simultaneously or any pair operated at will. When the lever 42 is thrown to the right of Fig. 6, it disconnects the clutch and puts onr the brake L10, so as to stop the Wildcat instantly.

It has been found in practice that the great strain caused by the chain 16 acting upon the unbraced center of the pocket is apt to deform the wall of the pocket. The system of struts or braces shown in Fig. 1 is so designed that it distributes strain caused by the chain 16 directly onto the two pontoons 10 without relying onthe strength of the walls of the bin or pocket 11. To accomplish this, each of the hoisting mechanisms 17 is mounted on a vertical'plate-iron column 50, so that any.

vertical strains are carried directly down to the left-hand pontoon lO, as seen in Fig. 1.

rIhe diagonal brace 51, which 'may conveniently consist of a pair of I-beams, extends directly from the hoisting mechanism to the inner and upper portion of the right-hand pontoon 10, as clearly shown in Figs. 1 and 2. The chains 1G preferably run midway between each pair of braces 51 when they are used in pairs, as shown. The junction of the braces 51 and the walls of the pocket 11 are preferably strengthened and the distribution of forces improved by the vertical plates 453. As the vertical force upon the two pontoons 10 would be largely at the inner sides of the pontoons diagonal braces 54.-, 55, and 56 are placed in such a manner as to carry the forces outward upon the pontoons, as will be clearly understood by reference to Fig. 1.

The transverse walls 57 between the several pockets brace the pontoons, the pockets,

and the whole structure of the scow trans` versely.

The upright columns 50, being formed of` sheet-metal plates and channel-bars and placed directly beneath the hoisting mechanisms 17, are arranged to receive the slack ends described is concerned I make no claim to' having invented features or combination of features not pointed out in the following claims, as certain features are the invention of other parties and the subject of separate applications for patents. I desire to be understood, however, that in describing the preferred embodiment of the invention as it has been actually designed and used I do not mean to imply that the form and details of the several parts are subject to no modification. 0n the contrary, it-is clear that a difference in the proportions or general arrangement of `the scow would require considerable modifications in the details I have described, and even in the form of scow shown these details could be modified by mere engineering skill without departing from the principles involved. I also desire to be distinctly understood that although Ihave shown a chain hoist instead of a wire rope or other hoisting mechanism, a rope, band, or other 'tension device is to be regarded as the mechanical equivalent of the chain which I have shown, though on account of its greater flexibility and convenience in preventing its slipping on the hoisting apparatus the chain is decidedly preferable to a wire rope.

Having now fully set forth the particulars of my invention, so as to enable engineers and others conversant with the related art to make use of the invention, I claim, and desire to secure by these Letters Patent, the following features:

1. In combination in a dumping-s'cow and with the inclined or overhanging walls of a pocket thereof, the pair of doors forming the bottom of the pocket, ahoistin g device 17 supported near the upper edge of one of the said inclined or overhan ging walls, chains for closing and supporting the said doors, actuated bythe said hoisting mechanism,and a brace 51 extending from 'the said hoisting mechanism and fromthe inclined'wall in vicinity of said hoisting mechanism, diagonally across the said pocket, substantially as described.

2. In combination in a dumpingscow and with the two pontoons thereof, the pocket between the said pontoons provided with a movable bottom or doors, hoisting mechanism and chains for closing and supporting the said bottom or doors,a'column which supports the said hoisting mechanism upon one of the said pontoons and a brace extending from the said hoisting mechanism across the said pocket to the other of said pontoons, substantially as described.

3. In a dumping-scow and in-combination with the pontoons, and the lpocket having one or more movable doors or bottoms, hoisting mechanism, a hollow column supporting the hoisting mechanism, and a chain 16 for operating the said doors or bottoms, the said chain ICO with a hoisting mechanism for the doors or bottoms of one of the pockets, a combined supporting-column and chain-locker or chainpocket, the said column being hollow and surmounted by the said hoisting mechanism, and the loose end of the said chain extending down into the said column, substantially as described.

5. In combination in a dumping-scow, the two pontoons thereof, a pluralityof pockets arranged between the said pontoons, and provided with movable doors or bottoms, a plurality of hoisting mechanisms atlthe sides of the said pockets connected to operate the said doors or bottoms, columns supporting the said hoisting mechanism upon one of the said pontoons,diagonal braces extending from the said hoisting mechanisms to the other of the said pontoons, an actuating main shaft common to the said hoisting mechanisms, anda source of power therefor, substantially as described.

6. In combination lin a dumping-scow, the plurality of pockets thereof having movable doors or bottoms, the plurality of hoisting mechanisms arranged at the side and opposite the center of each of the said pockets for operating the doors or bottom thereof, au actuating-shaft 1S, common to the said hoisting mechanisms, reduction-gearing connecting the said shaft to said hoisting mechanism, and independent clutches for connecting each of the said hoisting mechanisms with the said shaft, and for disconnecting them, substantially as described.

7. In combination with a plurality of pockets with movable doors or bottoms, a plurality of hoisting mechanisms for operating the said doors or bottoms and a main actuating-shaft, com mon to said hoisting mechanisms and provided with separate clutch lmechanisms for each of said hoisting mechanisms, substantially as described.

8. In combination witha plurality of pockets provided with movable doors orbottoms, and with the operating-chains 16 therefor, a plurality of Wildcats or hoisting mechanisms for the said chains, an actuating-shaft 18 for the said mechanisms, a plurality of Worms, mounted and free to turn upon the said shaft, a plurality of clutches for connecting and disconnecting the several worms with the said shaft, and worm-wheels for the several hoisting mechanisms, actuated by the said worms, substantially as described.

9. In combination with a chainoperated dumping device for a pocket, the chain-hoist or Wildcat 3l, a worm 37, a worm-wheel 36 for actuating the said chain-hoist or Wildcat 31, a shaft concentrically mounted with the said worm 37, a clutch for connecting the said worm with the said shaft, a brake for the said worm, and a lever 42 for simultaneously actuating the said clutch and the said worm, substantially as described.

`In testimony whereof I have hereunto set my hand this 15th day of January, A. D. 1898.

CHARLES CRAMP BOWERS.

Witnesses:

H. A. SwANToN, JAMES R. HARRISON.

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