US45245A - Elevator - Google Patents

Description

N. D. HNMAN.

ELEVATUR.

No. 45,245. Patented Novl 29, 1864.

l l l rUNITED STATES PATENT CFFTCE.

N. D. HINMAN, OF PLEASANT VALE, CONNECTICUT.

ELEVATOR.

Specicaton forming part of Letters Patent No1 fu-5,245, dated November Reissued August 20, 1867, No. 20.

To all *whom it may concern Be 1t known that I, N. D. IIiNMAN, ot

i T 1 1 Pleasant Vale, m the county ot lvew tlaven and State of Connecticut, have invented a new and useful Improvement in Elevators; and I do hereby declare that the follmving is a full, clear, an-d exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which Figure l, is a side sectional view of my invention, taken in the line fc, fr, Fig. 2. Fig. 2, a plan or top view of the same.

Similar letters of reference indicate like parts.

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 ele rated may be drawn over the spot where it is desired to have it deposited-and then dumped.

The invention is chiefly designed for elevating and moving hay and grain in barns but it is applicable to other purposes.

The invention consists in a novel construction and arrangement of part-s pertaining to the car, 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, the car being allowed to move back to its original position by its own gravity, the ways being inclined to admit of that result.

A represents the car composed of four parallel bars (a fitted or secured at equal distances apart on two axles B, B, on the outer ends of which wheels C provided with flanges Z), are itted loosely.

Between the two center bars a, a, there is a fixed pulley D over which the hoisting rope E passes said rope being connected to the fork, bucket or other article which holds or contains the load to be elevated by means of a chain F which also passes over the pulley D, said chain having a button G, on its lower end, the use of which will be presently shown.

I-I is a pawl which at 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, of the car i and is of right angular or bent form and its lmver end is directly opposite a sliding rod t) in the car said rod extending through one end of the car and having a spiral spring Q upcn it which has a tendency to keep the inner end of the rod free from the lower end of the pawl, as will be understood by referring to both figures.

J, J, are two parallel bars or plates which are fitted atone end on pivots c between the outer and central bars a. of the car A. The opposite end of these bars J J, are connected by a cross-piece K, which. when the bars J, J, are fully down rest in notches d, in theupper edges'of the bars a so that the upper surfaces of K. J, J, and fz. will be tiush7 with each other or in one and the same plane.

L, L, are two bars which are fitted on pivots CZ between the outer and central bars a of the car. 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 L L operate as stops and prevent the car A from moving on its ways, M when the load is being elevated, said bars bearing against pins c attached to the ways-see Fig. l. lVhen the car is at this point it will be seen that the bars L, L, in consequence of being in Contact with the pins e will hold it while the rope and chain E, F, are drawn up over the pulley D in the direction indicated by the arrow in Fig. l.. `When the load is fully elevated the button G comes in contact with the lower surfaces of the bars J, J, 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 Z and admit of the car A, under the pull of the hoisting rope E, to be drawn along on the ways M. vWhen the car reaches the point on the ways where the load is to be dumped it 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 load. During the time the car is being drawn upon the ways M the pawl H is in contact with the chain F and prevents the load descending in case of any checking of the horse or cessation of pull on the rope E. This pawl is kept engaged with the chain F by its own gravity only. 1When the load has been dumped the horse by which the load was elevated, is backed free from the chain F to admit of the emptyfork or bucket descending to be again filled or reloaded for a succeeding ascent, the bars L, L, passing` behind the pins e so as to hold the car when the load is again hoisted, and 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 and admit of its being drawn on the ways with its suspended load, the pawl H will drop by its own gravity and engage with the chain F, the rod O being forced back or outward from the lower end of the pawl by the sprinO Q.

I would remark however in this connection that the pawl may be made sufiiciently heavy to force back the rod O when the latter is drawn from the stop. In this case the spring Q may be dispensed with.

rThe pawl H it will be understood is always in contact with the chain F except when the empty fork or bucket' descends to be reloaded.

I would remark that the hoisting rope E is arranged over pulleys and has the horse attached to it in the same way as all similar elevating devices. By this arrangement I dispense with a weight and pulley to draw back the car after the load has been dumped and the device is much more simple than those hitherto constructed to effect the. saine result, and works much smoother and easier with less tear and wear and without any sudden jerks which attend the use of the cars which are provided with weights.

I claim as new and desire to secure by Letters Patent.

l. rIhe bars J, J, L, L, pivotedin the car A as shown, and the bars J, J, connected at one end 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 substantially as and for the purpose herein set forth.

2. I further claim the bent pawl H, with the sliding rod O or its equivalent, with or without the spring Q, arranged to operate in connection with the chain F, and pulley D, substantially as and for the purpose herein set iorth.

N. D. HINMAN. Vitnesses M. M. LIVINGSTON, C. L. TOPLIFIP.

[FIRST PRINTED 1912.]

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