USRE2751E - hinman - Google Patents

Description

N. D. HINMAN, OF STEPNEY DEPOT, CONNECTICUT. Letters Patent IVO. 45,245,'dated NovemberQQ, 18.64; reissue No. 2,751, dated Angst 20, 1867.

IMPROVEMENT IN ELEVATORS.

LTO ALL WHOM 1T MAY GONCERN:

i. Beit known that I, N. D. HINMAN, of StepneyDcpot, in the county oi Fnirield, and State of Connecticut, lhave invented a new Improvement in Elevators; :ind I do hereby declare the following, when taken in connection with the accompanying drawings and the letters (jf-reference marked thereon, to be a full, clear, and exact` description ofthe same, and which said drawings constitute part of thisspeciliention, and-represent, in

Figure 1, a side sectional view of my invention, taken in the line x x, iig. 2. Figure 2, a plan ortop view ofthe same.

This invention relates to a-new and useful improvement in that class of elevators which are connected with a. car placed on elevated ways, and arranged in such a manner that the load-when elevated may be drawn over l the spot-where it is desired to have it depositedl and then dumped. i I

This invention is chiey designed Afor @lei-'ating and moving hay and grain in barns, but-is applicable to other purposes. A This invention consists in a novel construction and arrangement of parts pertaining to the lear, whereby the same is held stationary when the load is being elevated, and liberated automatically, and allowed when the load is elevated to travel on the ways over the spot where the load is to be dumped, thc ear being allowed to move back to its original position by its own gravity, the ways being inclined to admit of that result.

In order to the Aclear understanding of my invention, as well as -to 'enable others to construct the same, I will proceed to a description thereof, as illustrated in the accompanying drawings- A represents the car, composed of four parallel hars, a, fitted or secured at equal distances apart on two axles, B B, on the outer ends of which wheels, C, provided with ilanges b are fitted' loosely. Between the two centre bars a a there is a fixed pulley, D, over which thc hoisting-rope E passes, said rope being connected to the fork, bucket, or other article which holds or lcontains the load to be elevated, by means of a chain, F, which also passesover the pulley D, said chain having a button, G, on its lower end, the use of which will be presently shown. His a pawl, which nt certain times catches into the chain F and prevents its descent over the pulley D. This pawl is fitted between the two central bars a a et' the car, and is of right-angular orbent form,

and its lower end is directly opposite a sliding-rod, O, in the car, said rod extending through one end of the ear, and having a spiral spring, Q, upon it, which has a tendency to keep the inner end of the rod free from the lower end of thc pawl, as will be understood by reterring to both figures It will beV observed that while the pawl H is represented las beingioperated by' the sliding-rod O, it is not essential that the sliding-rod O bo so arranged that thearm of the pawl may strike against any fixed point on its return, to be raised instead e? the sliding-rod 0, and in such case the rod O with its spring may be dispensed with, it only being essential that the pawl be automatically tripped from the chain or rope when returned to its place of. descent. .l Jarc two parallel bars or platespvhiclrare fitted at one end on pivots, C?, between the outer and central hars a of the car The opposite ends of these bars J Jarc connected by across-piece, K, which, when the hars J J are fully down,'rests in notches' d d in the upper edges of the bars a, so that thel upper surfaces of K, .I J, and a will be llush with each other, or `in one and the same plane. L L are two bars, which are fitted on pivots d between the l outer and central bars a ofthe car.r These bars L L project down below the car A, and their upper ends bear against the cross-piece K when the car is held in position for the load to be elevated. The bars LiL operate as stops, and prevent the car A frourlnoving on its ways M when the load' is being elevated, said bars bearing against pins c attached to the ways, (see fig. l.) When the car is at this point it will be seen that the bars L L, in consequence of being `in contactl with the pins c, will hold it while the rope and chain E F are drawn up over the pulley D in the vdirection'indica-ted by the arrow in -iig. 1. When the load is i'ully'elevated the button G comes in contact with the lower surfaces ot' the bars .DJ and raises them, causing the cross-piece K to be thrown above the upper parts of the bars L L, so that the latter will be free to turn on their pivots ci and admit of the i I car A un'der the pull ofthe hoisting-rope E to be drawn along on the ways M. When the car reaches the point on the ways where the load is to be dumpedit is arrested by any suitable stop, and the operator, by means of a rope, N, trips the fork or turns the bucket so as to dump the loud. During thetime the ear is being drawn upon the ways M the pawl ll is incontact with the chain F, and prevents the load descending in case of any checkinn of the horse or cessation ot' pull on the rope E. This pawl is kept engaged with the chain F by its own i curs which are provided with weights.

'z 75l 2V y gravity only. When the Vload has been dumped, the borse by which the load was elevated is'backed, and'tbe car A s'nlloued to move back on the ways M to its original position, the ways being somewhat inclined to admit of this result. As the car reaches ilts'original position the rod 0 comes in contuct'with s. stop, and is thereby pressed or forced inward, so as tostl'ike the'lower end of the pnwl H and cause the upper end of the same to rise free from the chain F t0 :idmit of the empty fork or bucketllescending to be again filled or reloatded for a. succeeding ascent, the bars L L passing behind the pins e so :ts to hold the car, whenthe load is again hoisted, und when the fork or bucket'is again' raised and the button G comes in contact with the bars J J, and the latter are raised to liberate the car :mdadmit of its being drawn on the ways with its suspended load, the pawl lH will drop by its own gravity-and .engage with the chain F, the rod O boing forced back or outward from the lower end of the pawl by the spring Q. The pnwl H, it -will be understood, is always in contact with the chainF, except when the empty fork or bucket-descends to be reloaded. .I would remark that the hoistingrope E is arranged over pulleys, and has the horse attached to it iu the same way as all similar' elevating devices. y By this arrangement I dispense with a. weight and pulley to draw back.v the car after-the load has been dumped, and the device is much more simple than those hitherto constructed to etectthe sam'e result, alnd works much vsmoother and easier, with less tear and wear, und without unysuddenjerks which attend the use of the Haiying therefore thus fully described lnyiuvention, what I claim as new und useful, and desire to secureby Letters Patent, isi Y i f The bnrs'J J, L. L, pivoted in the car A, as shown; andthe barsJ J, connected :x-t Yoneencl by a. cross-piece,

K, in combination with the button -G on the chain F, and the pins e on the inclined ways M, all arranged sub-v stantinlly :is and for the purpose herein set forth. v K

I further claim the b ent pawl H, arranged to operete in connection with the chain .Fond pulley D, substantially as and for the purpose set'forth. l

N. D. HIN MAN. Witnesses

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