US99231A - pickering - Google Patents

Description

PATENTED JAN. 25, 1870.

J. PIGKERING. APPARATUS FOR RAISING AND LOWERING WEIGHTS.

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- mbms-JeJ-r No. 99,231. PATBNTED JAN. 25, 1870.-

J. PIGKERING. I APPARATUS FOR RAISING AND LOWERINGWEIGHTS.

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JONATHAN 'P'IOKERING, or STOCKTON-ON-TEES, ENGLAND;

Letters PatentNo. 99,231,;deted Jaiwwru 25 1370.

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Ibo Schedule referred to in these Letters Patent and making part of the lame.-

To all whom it may concern:

Be it known that I, JONATHAN Pioxmu'ne, of

Stockton-on Tes, in the county of Durham, England,

arrangements of-tw'o wheels or pulleys, of unequal diameters, with sunken chambers on .their .peripheries on the s'ame'spindle, and in placing over the larger wheel an endless chain, and over the smaller one a single chain, each chain having links of -t-he requisite size to fitinto the chambers, and then mounting the whole in a frame, so as to form a simple, compact, and convenient hoist, thatcan be readily used, where more complicated apparatus, such as 'was patented to me, December 1, 1868, cannot be employed.

In the drawings Figure 1 is a side elevation of my simple hoist;

Figure 2 is an edge view, showing the sunken chambers in the peripheries of the wheels;

Figure 3 is an elevation, showing how ratchet-wheels and pawls may be applied; g Figure4 is a plan of fig. 3; and

Figure 5 represents the wheels apart on the same The object of'my inrentionis to produce a safe, simple, and convenient hoist. To accomplish this, I

make two wheels or pulleys, A and B, of unequal di-- ameteis, with a deep groove,'c, and a series of oblong:

sunken cl'|a1nbe1s;a, separated by short curred spurs, b, on their peripheries, as clearly shown in figs. 2, 4, and 5, and firmly secure them on the'same-spindle, D, and mount them into a frame, 0, having a hook, E, at

1 jthe top, for suspending the pulley block thus constructed, as shown in' fig.- 1. I i v ,Over the wheels A and B, I place chainsF nnd'G, having their links so constructed that every alternate link may staudveitically in the groovesc', and the connecting ones lie flat in the oblong chambers a,' a-nd bear against the intervening spins b.

The chain F, which passesover the larger wheel is-endless, while the chain G, which passes over the smaller, is a single one. l

' In operating my device, the weight to be raisedis attached to one end otthe single chain, and the weight is raised by turning the larger wheel, bymeans of the endless chain G, 'the difference in diameter of the wheels givingthe leverage which enables alight weight on the endless chain 'to counterbalance a heavy one on the single chain. \Vhen the wheels are thus moved, it will be seen that it will be impossible for. the chains tosli'p, as they fit closely into the grooves and chambers on their peripheries.

It is obvious that these wheels may be provided with ratchet-wheels, H,,and pawls, I, arranged to be operated by cords, d, as clearly shownin figs. 3 and 4,

forthe purpose of holding the weight. in anydesire'd position; and, further, that insteadof having the wheels A and B close together, and mounted in a frame, so as to form a block, for suspension, they may he placed at some distance apart on the spindle I), and the spindle have its hearings in supports or uprights J, as clearly shown in fig. v5.

, It willthus beseen' that my hoist 'issim'ple, com

pact, and strong, and that-it can be used'in places where barrel, drum,.and pulleys could not be so conveniently or readily fixed or hung.

Having thus described my invent-ion,

} what-I claim, is-'- A hoist, consisting of frame 0, spindle D, andthe wheels A and B, having their-peripheries provided with chambers, a, when constructed and arranged to operate in connection with chains Fand G, substantially as herein described.

In witness whereof, I, the said J onA'rHAu Prensa- ING,-ha've hereunto set my hand, this 15th day of N0.

- I JONATHAN PIOKERING.

. \Vitnesses: -WM. SHARPE,.Att0Tn01l/ 8 Clerk,

' Stockton-on-Tees, County of Durham, England. JA ES 'TWEEDY, Attorney; Clerk,-

'St0cktonon -Tees aforesaid.

vember, in the year'of our Iiord1869.-z

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