Improvements in Reversible Rotary Tipplers for Discharging Coal and other Minerals.

摘要

7425. Smith, A., and Green, F. March 28. Tipping-apparatus. - Reversible rotary tipplers driven by friction or spur gearing are rotated in either direction, and automatically braked at the completion of a revolution, or when the motion is reversed suddenly, by the manipulation of a single hand-lever. Fig. 2 shows a side elevation of the tippler and controlling-mechanism ; the former is rotated in the direction for tipping, by movement of the starting-lever B to the right ; this withdraws the pin E from a stop on the end surface of the tippler, and also clutches the loose bevel-wheel M to the shaft K by means of a sliding clutch element L operated by levers on a rock-shaft Y controlled by links G, P. The shaft K carries friction or spur driving and supporting wheels engaging the periphery of the tippler, and may when necessary, be connected by chain gearing Y to a shaft at the other side of the apparatus carrying similar wheels which under ordinary circumstances only act as supporting-wheels. In some cases a single driving-wheel and three other supporting-wheels may be used. When the rotary movement has commenced, the starting-handle is released, and is then moved by the counterweight B' until the roller F engages a track on the end face of the tippler. When the revolution is complete, the roller enters a recess in the track, and the lever returns to its original position, thereby returning the clutch-member L to the central inoperative position, and at the same time applying a brake band to the pulley R on the shaft K, by means of the links N, 0, T. To reverse the motion of the tippler at any point, the pivoted handle U is raised against the action of the balance weight i1, thereby transmitting motion to the link H which has a pin-and-slot connexion with the lever P. During the first part of the movement, the lever G is raised, and thereby released from the lever P, by the lateral displacement of the recess in the lever H1 relatively to the pulley G1. Afterwards, the lever H operates the rock-shaft V through the lever P and clutches the bevel-wheel M" to the driving shaft. A spring catch engages a notch in the link C and maintains the clutch in position until the wheel F reaches the recess in the track, when the mechanism is re-adjusted automatically into the correct position for forward motion, and the brake applied. The bevel-wheels M, M11 are driven from a central bevel-wheel on a suitably-driven power shaft.