US583642A - Apparatus for hoisting and conveying - Google Patents

Description

(No Model.) I 3Sheets-Sheet 1. J. CAMPBELL.

APPARATUS FOR HOISTING AND CONVEYING.- No. 583,642. Patented Ju wrrplsssas rm: uomus PCIIZRS ca, vac-roman. msumnmn. b. t,

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J. CAMPBELL.

APPARATUS FOR HOISTING AND CONVEYING.

No. 583,642. Pateted June 1,1897.

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J. CAMPBELL. APPARATUS FOR HOISTING AND CONVEYING.

No. 583,642 Y Patented June 1, 1897.

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UNITED STATES PATENT OFFICE,

JEREMIAH CAMPBELL, OF CHELSEA, MASSACHUSETTS.

APPARATUS FOR HOISTING AND CONVEYING.

SPECIFICATION forming part of Letters Patent No. 583,642, dated June 1, 1897.

Application filed January 22, 1896. Serial No. 576,365. (No model.)

Massachusetts, have invented a new and useful Improvement in Apparatus for Hoisting and Conveying, of which the following is a full, clear, and exact description, reference be ing had to the accompanying drawings, forming a part of this specification, in explaining its nature, wherein- Figure 1 is a view, partly in elevation and partly in vertical section, of a hoisting and conveying apparatus containing the features of my invention. Fig. 2 is a view principally in elevation, illustrating a modified form thereof. Fig. 3 is a detail view in cross-section and elevation, illustrating one way of supporting the trolley-tracks hereinafter referred to. Fig. 4 is a view in plan of the engine forming a part of the apparatus.

The invention comprises a suitably-supported track or cable, a trolley movable there 011, a steam-shovel, an engine with windingdrums, a rope or ropes actuating the steamshovel and extending from it over the trolley sheave or sheaves and over a suitable guide sheave or sheaves to its or their drums on the engine, and a trolley-actuating rope extending from the trolley in the opposite direction from the shovel-actuating rope or ropes and over a guide sheave or sheaves to its drum on the same engine.

A represents the trolley. ,It is mounted upon the tracks a (see Figs. 1 and 3) or upon (See Fig. 2.)

Bis the trolley-moving rope. It extends from one end of the trolley forward or in a direction away from the operating-engine parallel with the trolley tracks or wire to the sheave b, then backward parallel with the trolley tracks or wire to the sheave 1) over or adjacent to the engine, and then to the winding-drum B of the engine.

C represents the steam-shovel. It is of the type known as the clam-shell shovel, and it is represented in Fig. 1 as operated by the ropes c c, which extend over the sheaves 0 carried by the trolley A, and from thence directly to the winding-drums C C of the engine, passing over the sheaves w, located at or near the engine. One of these ropes is a hoistingrope and serves to lift and lower the steam-shovel. The other rope serves to open and close the shovel.

The invention is especially adapted for use in hoisting material and carrying it horizontally some distance, and it is desirable that the various operations of transferring the shovel to, for instance,a position overa hatchway of acoal-barge, (see Fig. 1,) holding the trolley stationary in such position while the shovel is being lowered, closed, and elevated, then transferring the shovel and the trolley as a unit to the other end of the trolley tracks or cable or another discharging-point and at any height desired without varying its relation to the trolley, and then discharging the same, be done by a single operator working through a single engine; and to obtain uniformity of action or movements and simplicity of construction necessary in so operating the shovel by'a single operator I have provided as a part of the apparatus an engine having the three winding-drums B C C Each of these drums has independent conneotion with the driving mechanism of the engine'and means for engaging and disengaging it therefrom at the will'of the operator. The three drums are of the same diameter, and they are run at the same rate of speed, and when all are in operation they take up or pay out the same extent of rope, and a uniform relation between the shovel and the trolley is then maintained.

It will be understood that in transferring the trolley from one point to another either the trolley-rope drum winds up the trolleyrope B or unwinds it and in opposition to the winding action of the other drums, and particularly the drum used in connection with the shovel-hoisting rope, so that in transferring the trolley and steam-shovel in one direction the trolley-rope drum B will wind and the other two drums will unwind, and to the same degree, and in transferring the trolley and steam-shovel in the opposite direc tion the action of the drums will be reversed that is, the trolley-rope drum will then pay out and the other drums will wind.

It will be understood that in transferring a loaded or charged shovel its two ropes operate in opposition to the trolley-rope and as they are wound and the trolley-rope unwound move the trolley and shovel toward the drum, or, upon the reverse action of the drums, permit the trolley and loaded shovel to be moved in the opposite direction. If the shovel is not closed during the transferring move ments, the shovel-hoistin g rope cooperates with the trolley-rope in the movement of the trolley and the shovel, the shovel closing and opening rope not then assisting to the extent of the shovel-hoisting rope and having not much more than its slack taken care of during the transferring movement-that is, while operated by its hoisting-drum.

During the operations of charging and discharging the shovel the trolley-rope drum B is held stationary, or practically so, by pre venting or withholding the movement of its winding-drum, and the hoisting and opening and closing ropes are then operated by their respective drums and either to close and hoist the shovel or to open it and lower it.

As the three drums are of the same diameter and a part of the same engine and turn at the same rate of rotation, it follows that a definite relation between the steam-shovel and trolley maybe arrived at and maintained during their transfer; and this is of very great consequence in hoisting and conveying devices having relatively long horizontal travel and but relatively little room below the trolley rails or cable for the passage of the shovel.

It will be understood that where the shovelhoisting rope also performs the office of opening and closing the shovel, either directly or indirectly in connection with another agency, the closing and opening rope may be dispensecl with. The engine may be a stationary one, as represented in Fig. 1, and located at one end of fixed trolley-tracks or a fixed cable, or it may be contained upon a movable platform or car, and this construction is preferable where the work done by the shov'el is progressive.

It will be seen that as the winding-drums form a part of a single engine or mechanism it becomes possible to have them of the same diameter and rotate them at the same rate of speed and to bring their actuating levers or devices together in a bank or line where they are each easily under the control of the same operator.

Itwill also be seen that the horizontal movement of the trolley and shovel is due to the paying out or taking in of the shovel-hoisting rope at the same rate of speed that the trolley-operating rope is taken up or paid out.

In Figs. 1 and 3 I have represented a form of structure for supporting the trolley-rails which is well adapted for certain structures or classes of work. i It comprises the inclined supports D D, united at their upper ends, braced together by cross-braces d at their lower ends and braced apart near their tops by the stringers a, which support the trolleytracks or form them and which are connected with the supports D D by the hangers 6?, extending downward from the cr0ss-braces d and having the cross-sections d, upon which the stringers bear. This forms a cheap structure and one providing uninterrupted space for the travel of the shovel and forasidewise movement of it as well.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States- In a hoisting andconveying, device the combination of a horizontal track or cable, a sh cave b at one end of said track or cable, the sheaves b, 00 at the other end of said track or cable, a trolley movable 011 said track or cable, the rolls 0 carried thereby, a trolley-actuating rope B extending from the trolley in one direction only, around the end sheave b and from thence backward over the sheave b to a winding-drum B, the steam-shovel C of the character specified, its closing and opening ropes c and hoisting and lowering rope 0 both extending over the rolls 0 of the trolley to the sheaves 0c and from thence to the winding-drums 0, C the said windingdrums B, O, (J of the same diameter and adapted to be run separately and together attthe same speed, whereby all the said ropes G, c, c in transferring the shovel and trolley travel at the same rate of speed and thus maintain a constant relation between the shovel and trol-' ley during its transferring movement, and whereby also the rope 13 moves the trolley in one direction and the ropes c, c or one of them also serve to move the trolley in a reverse direction without changing the relation of the shovel, substantially as described.

JEREltlIAII CAMPBELL.

lVitnesses:

F. F. RAYMOND, 2d, J. M. DOLAN.

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