US495398A

US495398A - Joseph h

Info

Publication number: US495398A
Authority: US
Publication date: 1893-04-11
Anticipated expiration: 1910-04-11

Description

(No Model.)

J. H. DICKINSON.

AERIAL TRAMWAY.

No. 495,398. Patented Apr. 11, 189s.

i UNITED STATES PATENT OFFICE.

JOSEPH H. DIOKINSON, OF TRENTON, NEW `JERSEY, ASSIGNOR TO THE TRENTON IRON COMPANY, OF SAME PLACE.

AERIAL TRAMWAY.

SPECIFICATION forming part of Letters ZPatent No. 495,398, dated April 11, 1893.

Application tiled August 31, 1892. Serial No. 444,632. (No model.)

To a/ZZ whom itrmay concern.-

Be it known that I, JOSEPH H. DICKINSON,

` a citizen of the United States, residing at Trenton, in the county of Mercer and State of New Jersey, have invented certain new and useful Improvements in Aerial Tramways; and I do hereby declare the following to be a full, clear, and exact description of my invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to that class of aerial .'tramways wherein a traveling carriage from Y :which is suspended the load to be transported Vvmoves upon a tram-rope; and more particu- 151 lnsed in skidding or moving logs from point .gto point.

The object of my invention is to provide :means for materially extending the length larly,v to that class of such tramways as is of such tramways, and increasing their etticiency; such means consisting of adjustable intermediate supports for the tram-rope adapted to permit the traveling carriage with 4its load to automatically determine the alti- `tudrot' the tram-rope, reduce all abrupt deviiect'ions therein, and readily pass all intermediate points of support without danger of der ailment.

I shall now proc-eed to describe my inventienvmore fully, having reference to the accompanying drawings, in which Figure l shows a general View of my invention applied to an operative tramway. Fig. 2 shows a side elevation of a saddle for supporting the tram-rope, and Fig. 3 shows an end View of a saddle with a vertical cross-section of the shoe.

In the drawings A, B are the end standards or supports of the main system.

C is the outer support of the auxiliary loading system.

D, D, D, D are intermediate standards of the tramway.

E, E are standards to which are connected guy-ropes or cables for maintaining the intermediate tram-rope supports in their proper posit-ions.

a is the tram-rope.

b is the hauling rope.

c is the tail rope orauxiliary hauling cable.

frame connecting two flanged wheels running v upon the tram-rope a with a depending sheave, is connected with the tail rope or auxiliary hauling cable c. Near the standard A is located a steam winch or engine to which are geared three winding drums z', j, lo, which may be operated independently of each other. The hauling rope t is wound upon the drum j, and passes over the sheave Zxed upon the support A, and through the sheave depending from the carriage h, and to its free end is attached a pair of tongs for gripping the logs to be conveyed. The tail rope or auxiliaryhauling cable c is wound upon the drum k and passes over the sheavem on the standard A, and over the sheaves n, 0,19, and back to the carriage h. Attached to each pair of intermediate supports D, D is a cable q on ,whichV is suspended a sheave, such asm, and o for sustaining the auxiliary hau1ingrope, and the sheave r, which sheave r is placed as nearly 'as may be in a vertical plane with the line of the tram-rope a. The cable s passes over the two sheaves lr, r swung from adjacent pairs of intermediate supports of the tram-rope, and is attached at each end to one of the saddles t, t, in which saddles the tram-rope a is laid and secured. The cable s is arranged in two sections with rings w, fr, x, or the like, placed at intervals upon one section, while a hooky is attached to the contiguous end of the other section thereof so as to engage with any of the said rings upon the rst section of the cable s so that the length of the cable may be varied as occasion may require according to the interval between the two pairs of adjacent tram-rope supports D, D, D, D.

When in use my invention operates as folloo danger of derailment.

lows: The drums j, and lc are set in motion, and the carriage h is run out from the support A to a point on the line of the tramway where lie the logs which are to be transported. The tongs at the free end of the hauling cable b are then gripped upon a log near one of its ends; the drumj is set in motion to wind the cable b, and the drum lo is set in motion to unwind the auxiliary hauling rope c, and is controlled by a brake to keep the log in the desired position and elevation at the end of the hauling rope b. One end of the log is then raised clear from the ground, and the log is dragged toward the drums. As the carriage h approaches the saddle t nearest it, the carriage and its load defiect the tram-rope a at the point of contact with the carriage. This operates to draw the cable s over the sheaves fr, r, and while the saddle t nearest the carriage is depressed with the portion ot' the tramrope adjacent thereto, the other saddle tconnected therewith by the cable s is raised, and with it that portion of the tram-rope (t contiguous thereto. This action of the tram-rope and saddles t, t connected by the cable s obvates all abrupt deliection in the tram-rope a at the point ofsupport which the carriage is passing, and enables the carriage to pass smoothly and easily over the saddle, and onto the next section of the tram-rope a without As the `carriage progresses toward the winding drums, and the point of maximum deliection in the tram-rope a, moves away from one intermediate support toward the next,the weight of the carriage and its load operates to vshift the cable s andthe saddles t, t so that the saddle which the carriage has passed and is leaving is gradually raised, while the saddle. which the carriage is approaching is correspondingly depressed. It will be readily seen that when the carriage reaches a point upon the tram-rope midway between the two saddles t, t, those saddles will be upon the same horizontal plane, and as the carriage proceeds farther toward the second saddle t the saddle which it approaches will be gradually depressed until it reaches practically the same level as that which was occupied by the first saddle passed at the time the carriage crossed it, While the iirst saddle t is correspondingly elevated. The deflection in the tram-rope a at each saddle t is thus reduced to a minimum at the time the carriage passes it. When the carriage reaches a point near the support A the -log is released from the gripping tongs at the end of` the hauling rope b, and the similar pair of gripping tongs attached to the free end of the hoisting cable e is made fast to the log; the drum 'L' is set in motion to wind the cable e, and the log is promptly hoisted and unloaded upon the wagon, car or other vehicle intended to receive it. It will be seen that the intermediate supports of the tram-rope a may be multiplied to any desirable extent, and the sad dles depending thereform connected in pairs by compensating cables similar to the cable s so that the range of the tramway may be greatly amplified.

Having thus described my invention, I make no claim to the tramway as a whole; but

l. In an aerial tramway, a tram-rope in combination with a supporting cable playing upon sheaves sustaining the same, and attached to the tram-rope at two separate points, and adapted to automatically reduce the defiection in the tram-rope at the points where it is sustained by the supporting cable when the carriage traveling upon the tramfrope passes said points; substantially as shown and described.

2. In an aerial tramway, a tram-rope in 'combination with two saddles attached thereto at separated points, a supporting cable playing upon two supporting sheaves, and having each of its ends attached to one of said saddles, means for supporting said sheaves, and means for retaining said sheaves in their proper relative positions; substantially as shown and described.

3. In an aerial'tramway, a tram-rope in combination with two saddles attached thereto at separated points, a supporting cable playing upon two supporting sheaves, adjustable as to its length, and having each of its ends attached to one'of said saddles, means for supporting said sheaves, and means for maintaining said sheaves in their proper relative positions; substantially as shown and described.

JOSEPH H. DCKINSON. Witnesses:

Jos. L. WATSON, F. B. STEVENS, J r.