US102763A - Improvement in hoisting-apparatus - Google Patents

Description

WILLIAM H.` BRO-WN,

Letters Patent No. 102.763. dated May 10, 1870.-

IMPROVEMENT IN-v HOISTING-APPARATUS.

'd'he Schedule referred to in the Letters Patent and making part of the lame.

I, WILLIAM H. Bn'owx, of- N ew York, in the county andl State-of New York, have invented certain Improvements in Suspended Purchases, of which the following is a specification.

i .Nature and Objects .of the Invention.

The said invention relates to carriages traveling on cables suspended over the points at which the work' required is to be done; and, for the work of ypiling yand storing coal, for instance l' It consists of means for-*receiving 'the coal in tubs 'which lhold 'about a ton, elevating it tothe 'height required, or a little more, so that it couples upon a traveling carriage, which is lthen detached from the holdback bythe action ofthe weight upon it, and then Ipermitting it'to run down the incline of the cablc, un-

- til it reaches theI point over the place where the coal is to be delivered, where thetub is tilted and caused to ueposfitits load by the automatic action of the appalratu's, or the method lof its operation inherent in its construction. The tubv then rights itself, and is drawn back with the carriage to the-place of starting, where it is uncoupled and lowered by the actionA of the pur chase-fall, for the'receptlon of f another load.

Tile operations of hoisting, transporting, discharg-4 iug, and returning are thus effected, controlled, and

. regulated by the purchase-fall alone, under-the manip- A ulation of the single person .who may be in charge/of'l the hoisting-power and machinery. I

' Description of the Drawings. To enable others-skilled in the art-to which'it appertains to make and use my inventio'n, I willv proceed to describe its construction and operation,'with reference to the drawings.

Figure 1 isa diagram illustrating the general operation of the mahinery, and representing on the left the carriage, secured to the hold-back, and the tub-- being lowered for the reception of a load; .in the middle the carriage, witlrthe tub attached, is traversing the cable; and onthe right, wher'e the carriage has reached its destination, the tub is tripped or tilted, audits contents aie deposited;

Figure 2 is-a side elevation of the carriage, with its purchase-fall and blocksand other connecting parts pendent upon it. lThe lines in red indicate the changes in position of the various parts in pelforming their several functions;- t Figure 3 is a transverse view of fhepurfhaseblocks coupled together-and 1 Figure 4 is also a trasv'erse-view of the purchase# blocks as they appear when they are beingl uncoupled for' the purpose of lowering the tub.`

The can'iage it consists of 'two groov'cd wheels sheavc, for the reception of the purchase-fall.

The Aupper block b is hung to the carriage, andgcar ries upon the hooks at the lower ends of its strap the slotted Suspenders c of vthe lower block d, whichiu 'turn carries, by an ordinary bale, t-llctub or ship e for the reception of the coal,

The suspenders c are jointed to the lower block, and

'arelordinarily held iu a vertical position by suitable springs, and they are also jointed toa sliding collar` working on the spindle. f, which `is'slotted for the re' ception of a retaining cross-lever and its goernin'g spring.

On 'hoisting the lower `block the suspender's come in n contact with the hooks oi' the `upper block, and' open f against their springs until they have passed over the hooks, when y they are yclosedby the springs, and the block is settled into its'place` hy-slacltening the purchase-fall.'

To'unouple the blocks for the purpose of lowering' .the lower block, a strain is brought upon 'the purehase- -fall that lifts the lower block until the sliding colla'l upon the spindle f comes in contact with the strap of ythe up'per block, through a hole in which the spindle',y

passes. I The motion of the sliding-collar 'comparatively downward Aupon thespindle opens the suspend.-y els until they vare beyond the hooks of the upper block,

by which 'time the sliding collar has passed below the lower cn'd' of the retaining cross-lever within the spindle, which is accordingly passed out by its spring, and; holds thev collar down .and the Suspenders extended in the position shown 4i viig."4. Qn then lowering the..v lower' block, the/Suspenders are retained in this extended .position until they hare' passed below the hooks of the upper block, and until 'the upper end of thev spindle f and olf itscross-lever pass through the hole in the upper strap, by which the projecting upper end of the leyer is compressed within the spindle, andthe lower end of the lever correspondingly retracted, so that the sliding collar is released, aud the springs ot'A the Suspenders enable them to resume their normal vertical position in readiness for coupling when requ'ired. v

The coupling is accomplished by hoisting the suspenders of the lower 'block over the hooks of the upper one, and settling it npon'the hooks by slackening the purchase-fall, and no disarrangement requiring special adjustment is required by the absence of `ex actitude in effecting the couplingeven when the blocks are brought?, two blocks together, aud1ikewise inun coupling the preliminary strain upon the purchaseyfall, in advance of the-lowering, uncouplesthe bloeixsl and eects the lowering without further adjustment or manipula-tion.

While the carriage is over the point at which the load is received, it is held in position by the hooks of the pair of levers g, over a. suitable piu in the holdback h, (lig. 1, sheet 1,) which may be clamped to theV cable or otherwise secured, and suitably constructed with wheels and bum er-springs.

The levers g are hui g at i, and the opposite ends are connected to slides that are slotted over the sheave-'pin on the sides of -thc xppcr block, and ter ininate at the lower ends in ho 'ns that tit within the hooks of the block.

lhe levers with their coimceting-slides are so balanced thatthe fermer preponderate when there is no additional. weight on the hooks. When the lower block, however, is coupled, the weight on the sliding hooks draws them down intofthe hooks ofthe block,

. and the hooks of the levers are raised clear of' the hold-back pins, and the carriage is released, so that, onthe release of 4the purchase-fall from the hoistingmachinery', the carriage travels down the'incline of the cable, and further, if necessary, until it reaches its destination. On returning to. the place of starting, the levers g hook onto the hold-back, and retain the carriage in position when the tub is lowered by the purchase-fall.A 4 Y Rbe'tub or skip in which the coal is elevated is so balanced that'it is right sidefup when empty, and 4reverses itself -when-full,-ifjit is not restrained. -This restraint is effected by the lcversj that are jointed to the sides of the tub, and hold itin position by means of the slotted segments catching the pins k on the bale-of the tub at each side.' Then the/levers are tripped' by raising their outer'ends, the pins k are re-V leased. and theloaded tub permitted to reverse itself and discharge its load, and then'returnto its vertical Y position, where it is again caught and held by the level-sj. l y

., '.lhe tripping of the -tub is accomplished by means of a cam,

back before described. The roller m, which is carried between' apair of vibrating levers that aref jointed to vcarrageis automatically detached by theloazln 4. Thehanging-,iron andits-connections, operating the carriage, rides the cam and liftsthe opposite ends nt' the leversand a'. hanging iron, n, which is jointed between them, and is so adjusted, in relatio|i"tq .the tub, that the latter` is tripped as desired, by the-motion described as consequent upon contact with" tlietsafm.`

The release of the rollerffrom the cam' perxni'ts'the vibrating level-sand hanging iron 'to 1Q-fesnlnetheixformer positions, in which ,the hook ott-he ,lxanging'i'ron v (iig.`1.) similar in construction tothe h'old- `the agency of the purchase a l.

wherever it may be desired, as'has beenv described,

but, in working'sonrnuonsly with loads that vary but slightly, its use may be dispensed with and a/quick i checking of the Vpurehas`e-t`all, arranged asindicated in the drawings, will lift the hanging-iron withoutvthe intervention of the cam. Experience `in the use of the apparatus renders this method oftripping the tub available in some cases, but, when a positive mutionis desired, it ispreferred to use the cam as described.

he banging-iron should, be double-jointed to thc carriage, as shown in the drawings, and the joints ot' the vibrating levers, as well 'as ot' .the other working part-s of the apparatus, susceptibleof adjustment.

Having thus descrbedtbe said apparatus in detail, as used for storing and piling'coal,y I would here state `that; it maybe varied in construction without mateprinciple of the invention, in adapting it to 'many other forms of raising-heavy weights, and for use in quarries, building and other purposes. So, also, parts of' the apparatus described may be dispensed with to suits'pecinl. circumstances, as the skip, for instance, and guy-tackles.' and blocks may be added to the carriage as required. lVth reference to these last, however, I prefer to employ, instead ol a pair of lordinary guyitackles, a single endI less rope, secured tothe carriage and traversing the' rial=dcpaiture from the cable, and driven by'a supplementary pulley o r pairof pulleys, attached to the hoisting-machinery, by which the carriage may be propeller] tu and held at any point required.

. Claims. I claim as my invention- 1.."lhe construction, arrangement, and operation of' the apparatus, substantially' as described.

l2. The"cross retaining-lever in the spindlef, by

which the coupling and uucoupnng Vis eticctcd through 3. The hold-'back levers and hooks, by which the substantially in the'manner described.

' W. K. HALL, 'JOHN HAYES.

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