US376655A - Hoisting apparatus - Google Patents

Description

G. H. HULETT.v

Y HQISTINGAPPARATUS. No. 376,655. f PatentedJan; 17, 1888.y

N. PErERs, Pmmmhagmpur, washingmn. D4 C,

3 T T E L U H. E G.

HoIsTING APPARATUS.

No. 376,655. Patent'd Jan.. y11.7,'18'88L c1/HOM N. persas. momnngnpnen washingwn. 0.o.

g UNITED STATES PATENT OFFICE." Y

GEORGE H. HULE'IT, OF CLEVELAND, OHIO.

Holsr'me APPARATUS.

SPECIFICATION forming part of Letters PatentNo. 376.655, dated January 17,1888.

Application filed January 10. 1887. Serial No 223,935. (Nemodel.)

y To all whom it may concern:

Be it known that I, GEORGE H. HULETT, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Hoisting Apparatus; and I do declare the following to be a full, clear, and exact description of ythe invention, such as will enable others skilled in the art to which it ap,

pertains to make and use the same, reference being had to the accompanying drawings, and to the letters a-nd iigures of reference marked thereon, which form a part of this specification.

This invention relates tohoists or derricks having automatic dumping apparatus; and the novelty consists in the construction, ar-

rangement, and adaptation of parts, as will be I more fully hereinafter set forth, and specifically pointed out in the claims.

I provide a base platform having two slots made in arcs of a circle, opposite portions of said slots being arrangedat a distance from each other equal to the distance between the feet of a tWo-leggedlboom, in order that theboom at its free end may be so changed as to engage the bucket with either hold of -a vessel without changing the position of said vessel. connects the bucket with a single pull-rope, the said double portion being reeved over pulleys arranged at a distance apart near the free end of the boom. The ropes rising simultaneously effectually prevent any considerable part revolution of the bucket. I provide a rectangular frame rigid with the boom and so arranged that when the bucket is down this frame is entirely out of the way. When the boom is elevated, a cross-piece, which connects the two. arms, will receive either side of the bail which is foremost and hold the same unt-il the other side of the bail comes in contact, thus bringing the bucket squarely in position to be dumped.

When the bucket is brought into the dumping position by means hereinbefore mentioned, an arm extending from a cross-bar secured to the boom-acts uponthe locking-latch toautomatically dump the bucket. y

I provide a bucket having its pivot arvof its exit.

I provide a double hoisting-rope, whichy ranged considerably below its center of gravity and considerably to the rear of the plane 'Ihe eXit is extended, and the position of its supporting-pivot gives it a short iiat bottom, which' will ride readily over the end of a car or cart, and which will by its veX- tended mouth recover the bucket in its return.

,I provide upon one or both of the simultaneously-moving lropes which support the bucket a stop or stops, which, when they come` in contact with the boom,fwill elevate ythe ,y

same to its dumping position; and in order to limit the elevation of the boom I providea` weight, which, being attached to the boorn' or one of,y its parts by a rope, will abut against a portion of the frame-work to modify and control the amount of elevation.

I provide a locking-arm, which, secured to the apex of the bail of the bucket, is engaged by a keeper xedupon the bucket at its rear upper portion, which locking-arm, when the bucket is in its dumpingpositionwith both sides of its bail bearing fairly against Y vthe cross-arm, is in line with the rigid dumpingarm.

I provide that the pulleys over which the pull-ropes are guided shall be hung separately in clevises loosely secured in blocks rigid with altering the condition or .working relation fof the hoist, through an inclined chute, which will emptyinto'a railroad-car below, between the tracks of theelevated railroad.

I have illustrated the invention, showing* only such parts as are claimed as novel.

- It will be understood that a steam-'drum is used, and thatve or more-derricks may be operated simultaneously by a single engine, the drum carrying the pull-rope of the several hoists. c

Figure 1 is a side elevation ofthe hoist, showing portions of the dock and vessel. Fig. 2 is an end view of the hoist alone. Fig. 3 is a top plan View with portions omitted. y Fig.

, 4 is a perspective view Vof parts of the apparatus detached. Fig. 5 is aside elevation ofthe IOO C designates an elevated platform having a l ledge, c, and C the iioor of said platform.

D designates the frame-work of the hoist, having at its upper end, suitablyjournaled7 a drum, D'. I

The platform G is adapted to support a earricr, as a car or cart, and within its supports c is strongly pivoted the boom F. This boom consists, essentially, of two legs,ff, and aV cap-frame, f2.

The platform Gis provided with oppositelyarranged arcs of a circle, C2 G", into which the feet of thelegs f f are received, and into which such feet may he secured at proper and desirable point's, in order to throw the free end of the boom overone or other of the hatchways of the vessel. I deem this feature important, as the crowding of other vessels will frequent-ly prevent the unloading of the one in question, and if the tide be low the vessel might be aground, which would necessitate the moving of the vessel or a cessation of work. When the car B2 is out of the way, the unloading may still be carried on through an inclined chute, B, intothe'carrier B. The boom Fis supported by a rope, f3, from the frame D, and carries near its free end two pulleys, f4 f5. The bucket G, which will be hereinafter more particularly described, is connected by a small chain, g, to a block, g. To this block is rigidly connected a two-part rope or cable, H H', and these two ropes at their upper extremities are spliced or otherwise strongly connected to a single pull-rope, I. rIhus when the rope I is drawn downward the two ropes H H', reeved over the pulleys f5 f4, respectively, are drawn upward simultaneously, and the said pulleys, being arranged at a distance from each other, will prevent the bucket from any considerable rotation.

Upon the rope H, I attach a stop, h, which, when it comes in contact with the outerend of the boom, will elevate the boom and its load up into the position shown in dotted line in Fig. 1. t will be noticed that the inner rope, I-I, being of less length than the outer rope, I-I, when the boom assumes its highest position, will hold the bucket evenly from its block y. l

K designates a rope, which is attached to any suitable part of the boom, and leading through an eye, k, arranged above the ledge c, carries the weight K from its lower end. When the boom F has reached its highest desired point of elevation, the weight K,wi1l abut against the stationary frame-work and prevent its further elevation. rlhe elevation of the boom may be adjusted at will by merely adjusting the position of 'the weight K upon its carrying-rope K.l

The bucket G is of peculiar conformation.

I place the pivot g3 of its bail g4 considerably below and in rear of its center of gravity. It has an extended dumping mouth. As the bucket swings inward and upward as the boom is elevated, I desire that its bottom shall not come in contact with the end of the carrier.V At the apex of its bail gt, I pivot a locking-arm, G', and to the rear upper edge ofthe bucket I provide a` locking-catch, g5.

Rigid upon the boom F, I form a frame-work consisting of two arms, J J, connected by a cross-arm, J. The short fiat Ybottom of the bucket, as it is forced upward and inward by the connecting-ropes, if it comes in contact with the crosssbar J,with either side of its bail foremost, will oscillate until the other side of said bail reaches said cross-bar, and the bucket is in position to dump. Before it reaches its position, however, its locking-arm G comes in contact with a dumping-arm, L, rigidly held upon a cross-bar, L. i By this construction and arrangement of parts the elevation of the boom, by reason ofits weight K, is not only controlled, but the bucket is forced by the crossarm J' to come fairly into position to be dumped, and at the instant before it reaches such position the dumping-arm L automatically releases tlie locking-arm G, and the bucket is dumped into its desired receptacle.

The short flat bottom of the bucket, as be fore mentioned, prevents it from coming in contact with the end of the carrier; but on its slow return its snout g is intended to come into such contact, as the boom slowly descends by reason of its own weight and the additional gravity of the weight K', to throw the bucket back into its normal position and to lock the bar G with its keeper g".

The carrier B, I ordinarily' arrange upon a railway. When this carrier is not in use, I provide that the bucket may be dumped into the chute B3, and from thence into a car, B', beneath the elevated platform and upon the dock.

rIhe feet of the boom may be arranged with any ordinary provision for locking them in place within the slots Cl.

It has been proposed to use booms with movable feet moving in the are of a circle, and I do not therefore claim this broadly; but in such case the feet were secured by bolts passing through curved grooves in castings attached to the platform. I regard my improvement as essentially different from this, inasmuch as my shoes work in slots formed in the platform itself, and there is thus no liability of the castings in which the grooves have been heretofore formed becoming loose and thus getting out of place.

In some cases I may make my shoes in thc form shown in Fig. 4--that is to say, with mortilses on which the feet of the boom are stepped. The draw-rope I passes over a drum, and by IOO IIO

. circle, of two pulleys arranged in the free end further suitable connections (not shown) is-led over the drum of a steam-engine or other motor. (Not shown.) .Y

The pulley m is hung within a clevis or crank frame, which is pivoted within suitable blocks, M, fixed upon the dock A.

l The motor-drum may be employed to operate several hoists simultaneously, or several drums may be so'arranged in relation to each other that one may revolve loosely upon the power-shaft to return a bucket while other drums are thrown into connection with the powereshaft to elevate other booms.

Modifications in details of construction may be made within wide limits without departing from the principle or sacrificing the advantages of myinvention, the essential features of which have been fully hereinbefore described.

Having thus described theinvention, what I claim as new, and desire'to secure by protection of the United States, is Y l. The combination, with an elevated platform having curved slots oppositely arranged in the arcs of a single circle within .the body Y of saidplatforni, of a two-legged boom having shoes working directly between the Walls of and arranged to Ybe adjusted withinsaid arcshaped slots, whereby the free end of theboom may be thrown over different-hatchways of a vessel without moving either the vessel or derrick, as set forth.

2. The combination, with the boom F and meansfor changingits position in the arcot' a ofthe boom, a single pull-rope and two brauch ropes, as II H', the said branch ropes being arranged to move simultaneously, and having their outer ends connected to a block which supports the bucket, as set forth.

3. The combination, wit-h the boom having pulleys f 4 f 5, of the-bucket-supporting block g', the simultaneouslymoving ropes H H', both attached at one end to said block, and pullrope I, attached to both of said ropes, the drum boom at predetermined specified.

4. The combination, with the boom having pulleys f' f5, the bucket and its supportingblock, the two simultaneously-moving ropes, the pull-rope, and proper connections, o f the weight K' and lcord'K, arranged to limit theV upwardmovement of the boom, as speciied.

5. The combination, with the boom F, the suspended bucket, and means for elevating them, of the frame J J, secured to said boom, and the cross bar J', rigidly secured to said bucket and to square7 itup for dumpinggvas herein specified.

6. The combination, with the boom, the

frame and arranged to engage the bailof the-A 6o periods, as hereinl bucket, and means for elevating them, of the cross-bar J', rigidly secured to the boom and arranged to present the bucket fairly for dumping, and the dumping-bar L, vsupported rigidly upon the beam at right angles to the bar J',

and4 arranged to engage the locking-arm of the 'Y bucket to dump the same, as set forth.-

7. The bucket G, having short flat bottom and extended dumping-mouth, and having its bail-pivot hung below and in rear of its center vof gravity, and having an extended mouth and bail, g, combined with the boom, the cross-bar J', the locking-arm G', the keeper g, and dumping-arm L, as setforth. l

8. The derrick herein described, comprising the boom having its feet adjustably secured in slots C2 of the platform C, the pull-rope I and its two branches,'H H',fthe longer 'one the boom, and both secured rigidly to the blockg', the bucket G, having locking-arm G', the frame J J', the dumping-arm L, the rope K, and the yweight K', and the stop h, all arranged vfor joint operation, for the purpose set forth.

In testimony whereof I affix my signatureiu presence of two witnesses.. Y f

Y GEORGE HULETT. Witnesses: f

or pulley D', and the stop, as lz., arranged upon one of said ropes and adapted to engage the I E. J. FOSTER, THEO. R. HOFFMAN.

se being led over the pulley f5, nearest the end of i

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