Patent GB-190426298-A (GB)
Title: Improvements in and relating to Transporting Appliances and the like.
Inventor: TEMPERLEY JOHN RIDLEY
Filed: 1904-12-02
Granted: 1906-03-02
Abstract: 26,298. Temperley, J. R., Temperley, J., and Alexander, W. Dec. 2. Rope railways.-Motor-driven epicyclic gearing is used for independent, simultaneous, or separate hoisting and traversing of a loaded grab or other apparatus connected to a rope railway or overhead crane. Fig. 1 shows a single-chain grab d with the chain e passing over a pulley c on the travelling carriage b and thence round other pulleys to the hoisting-drum g. The carriage b is drawn along the track a by the ropes h, h<1>, which pass to the drum that is directly driven from the motor q by the toothed wheels t, t<1>. The drum g is driven from the motor p by means of toothed wheels v, y, the former of which rotates the loosely-mounted member o of the epicyclic gearing. The motors p, q may be simultaneously operated, or either may be held stationary by a brake while the other is rotated. Several modifications in the epicyclic gearing are shown, in which the bevel-wheels m, n are connected to spur-wheels gearing with similar wheels mounted on the barrels l, g, and various members of the gearing are driven by the motors. In another form, the bevel-wheels m, n are of different size and are connected by an inclined wheel, so that the hoisting-rope e may be connected at one end to the carriage b and passed round a movable sheave 31. In a modified arrangement, the hoisting-rope is coiled round one portion of a compound barrel on the carriage, and may be attached to the barrel or continued back to the hoisting-drum to form an endless-rope drive, while the load is connected to the other portion of the barrel by a separate rope. Suitable clutches may be fitted to the epicyclic gear so that the members can be made to revolve together or at a fixed relative speed. An arrangement is shown for working a double-chain grab in which three drums are driven by two motors, the operations of hoisting, traversing, and opening or closing the grab being independent of one another as in the previous case. Any convenient form of epicyclic gear may be used, and also any form of traversing gear ; also both the hoisting and traversing gearing may be partially automatically operated, as, for instance, by a travelling nut or similar device on a screwed extension of the shaft 51, Fig. 9, operating a lever connected to the motor controller and cutting off the power when the load reaches a predetermined height. Fig. 9 shows an arrangement of mechanism where the hoisting-drum g is connected by spur gearing to a loose wheel z, which is attached to the bevel-wheel n and the clutch and brake disc 50. The drum l is connected to the bevel-wheel m, and the motor p drives the brake disc v carrying the wheels o of the epicyclic gearing by means of the wheels y, y'. A clutch operated by the rod 51 passing through the hollow spindle locks the disc 50, v together when required, or allows varying relative motion between them. A tensioning- arrangement is used to prevent excessive swinging of the load, a suitable form being shown in Fig. 8. The load 32 is connected to a spring drum 39, which is preferably mounted on an extension of the carriage b and takes up any slack in the rope 37. When the load is lowered, the motion of the drum 39 is regu'ated by friction caused by the pawl 40 pressing against the ratchet-wheel 41. Suitable operating-levers and mechanism are provided for controlling, clutching, and braking the various members of the apparatus.