USRE3811E - Improved hoisting-apparatus - Google Patents

Description

N.FETERS. PHOTO-LITH-OGRAPHER. WASHINGTON. D C.

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'l-HEWARRIOR MOWER COMPANY, OF LITTLE FALLS, NEW YORK, ASSIGNEES OF HENRY BLACK,

Letters PatentN 57,850,'dated September 11., 1866; reissue No. 3,811, dated January 25, 1870.

IMPROVE!) HOISTINGAPPARATUS.

To all whom it may concern Be it known that HENRY BLACK,-of Carrollton, in the county of Greene, in the State of lllinois, made certain new and useful Improvements in Hoisting-Apparatus; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings,- and to the letters of reference marked thereon.

Figures 1, 3, 4, and 5, are sectional side elevations of the improved apparatus? Figure 2 is a transverse sectional elevation of it.

Figure 6 is a dovetailed elevation of a brake, which is or may be used. I 'E The object of `this invention is to produce an apparatus for hoistingr lgoods of any kind, such as bales, boxes, or loose hay in forksful, and after such goods have been hoisted to the required elevation, by an automat-ic action of the niachinery, they are made to -travel in a lateral direction, any required distance, to

the point of delivery.

The construction of the travelling-carriage or pul-t leys is such that the load, on arriving at a ycertain elevation, will release the carriage automatically from its stationary position, and allow the power applied to moveit along the way, and when the ,load has been movedt the proper point and delivered, the carriage will retu nto its. former position, and be secured there also 'by an automatic action. The hoisting-rope is prevented from running .over-the pulley too rapidly, by means of an automatic brake.

To enable others skilled in the art to make and use this improved hoisting-apparatus, I will proceed to describe its construction and operation.

A A A. are the beams of a building, or'the timbers of a frame, constructed for the purpose of sustaining this apparatus.

B is an iron rod, stretched tightly between two or more of the timbers A, and so arranged that the wheels C C can travel back and forth upon it as upon a track.

D is a metallic carriage, formed of two sidefpieces, one of which is placed on either side of the rod B.

In the figs. ,1 and 3, these side-pieces are shaped somewhat. in the form of the shoeof a horse, and in figs. 4 and 5, they are formed with two vertical bars, connected by cross-bars at bottoni, with the open part upward, and the bearing for' the axles' ci' the wheels C C in the upper ends. Either of these precise forms is not. necessary inthe construction ot' this carriage,

. but they aresimply Aintroduced as being convenient amleconoinical forms.

The two side-pieces of the carriage D are connected .together by means of bolts passing through them, and

the woodenbeam D', which is placed between them. E is a wheel or sheave in the lower part of the carriage, over which the rope or fall F passes, between its point of attachment to the load, attached to the hook W' and the sheave Epvliich is secured to some stationary beam ortimber A. That .portion of the fall F, which is between the sheaves E and E1, must be parallel with the iron rod l5, or nearly so.

G s a brake, arranged to press against the rope or fall F, where it passes over the sheave E, so as to sustain and hold it in place after it has been raised highv enough, while the carriage moves forward on the track B, toward the sheave El, as will hereafter be more fully explained.

In tig. 1, 2L is a lever, attached to the journal ofthe brake, outside of the carriage 1),'for the purpose of operating the brake. 1

The rope or cord H is attached to one end of' the lever a, from which point itpasses over the sheave E2, and thence down to the weight lV', which weight, applied to the brake, through the medium of the rope H and lever a, produces the required amount of friction of the brake uponthe fall F. l

The level' al is connected with the lever a by means of a pivot-joint at a?, and the upper end of it is long enough to extend up above the stop b, which it strikesA as the carriage returns to the original or loading-stai tion, as shown in the drawings, and the brake is there.

byfthrown up ofi' the rope or fall, which will then run freelyover the sheave E.

I iig. 3, is a pawl, attached to the carriage l) at t, and arranged to drop automatically'y into the hook Il, when the carriage is run back to the position shown in the drawings, for the purpose of holding the carriage stationary during the hoisting of the load.

The pawl is jointed at a', figs. 3 and 5, so that it may be easily released from the hook Il, even when there is a strain upon it. f

The two ends of the pawl are kept in line with each other, when in the hook, as shown in fig. 3, by means of the spring 'i2 and link i3.'

There is a rod, l2, ligs` 3 and 5, connected with the pawl at t, and from this point it extends downward to the ring fi", which forms its lowerfend, and through which the fall F is conducted- The operation of the machine is as follows:

The load to be hoisted is attached to the hook W, which will then be4 drawn up by means of some power, no matter what, applied to the other end of the fall F. Vhentbe weight has been hoisted so high that the hook WV will strike against the ring i4, it will thereby raise the rod I, and so raise and release the pawlfroux the hook Las shown in fig. 3; or, as formed in iig. 5, it turns the hook a iixed to its axle, and releases a pawl on the axle, under the rod B, from its connection against astop on the rod, and allows the carriage to go free.

The carriage thus released, will start forward on the rod or track B toward the pulley El. The tendency of the action of the load at W would then be to run band combined together, that the part c1 may v tended enr-.contracted at pleasure, by means of the setrapidly downward; at the same time the carriage would shoot rapidly forward toward E, thereby subjecting the machine to imminent danger by breakage, were it the highest point to which it has been raised, while the steady force applied to the opposite end of the fall, causes' the carriage and its suspended load to advance steadily toward the point of delivery, which is in the direction of the sheave El.

The brake is applied by means of the carriage moving forward sufficient] y to release. the lever al, fief. 1,V from the stop b, when the Weight `W is allowed to act by its own gravity upon the brake.

When the load has'becn deposited, andthe hook W released, andthe power disconnected from the opposite end of the tail, the Weight W will `be suieient to draw the carriage back to its first position, at which, When it arrives, the pawl will drop its hook to retain it there, and the lever al will strike the stop b, iin. l, and rlease the brake, as has been already described.

As soon as the brake is released, the weight of the hook W may be suflieient to lower the fall for another load, or a. small cord may be attached to the hook for that purpose.l

The brake should be adjusted by some means, so that it can be made to press on the fall at the proper point, and also hard enough to produce the desired result. Y

In iig. l, this-adjustment is effected by construct-ing the'V brake in two parts, c and e, fig. (i, so arranged be exserew c2. The rope or fall, at the point where the brake would rest upon it, should be coreredwith some strong material, such as leather, for the purpose of' preventing undue wear.

The above-described are the general features of the invention, but the construction of the'various parts may be widely variedhy any ordinary mechanic.

Figs. 4, 5, andG, represent some of the Variations which readily suggest themselves. In lig. 4, the device for operating the brake consists of a segmental cog-wheel attached to the onterend ofthe brake-shaft- This cog-wheel gears into another section of segmental cog-gearing cut on one of the peripheries of a counterwheel having.,lr tivo radii, andrthat periphery ot' it which is described by the longer radius is also indented with cogs or teeth, which gear into a ra'ck, which, as the carriage returns to its position to receive its load, strikes against some stationary stop providedy to receive it., and then running back, as the carriage advances, acts through the counter-wheel, with ale verage upon the brake to withdraw it. The brake is applied in this case, as in the one already explained, by means of a weight.

Fig.'6 is a plan of brake with curved and corrugated front, designed to be used with the machinery,

as described for fig. 4.'

Fig. 5 represents another construction of the pawi for holding the carriage in position during the time the load is being raised to4 the ring 'it In this construction, the spring applied to the back end of the pawl, andthe hook with which the pawl connects, is a simple stop fastened uponthe rod B, behind the station of the Wheels C C.

Having described this invention,

XVhat is claimed, is-

the automatic pawl I, and the automatic adjustable brake G, or their equivalent, when used as and for the purpose set fort-h.

2. The adjustable brake G, so constructed that it may be set to any required distance from the sheave E.

3. The combination of the partsY above described, by which, at the moment the load to be hoisted reaches the proper elevation, the fall F is griped automatically by the brake to the sheave D, or other part o1' the carriage, and there held until the carriage, with its suspended burden, has been propelled by the horse, or other moving-power,nward, its load discharged, and then returned, drawn. by the weight 7, to its original position, and then automatically released from the gripe and allow ed to run freely over the sheave D, down, for reloading.

A. LOOMIS, President iVm-rior blower Company.

lVitncsses WAT'rs T. Looms, SIDNEY A. Looms.

The combination of the 'carriage D, having thel wheels G C arranged to travel upon the track B, and

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