GB617327A - Improvements in shaking chutes for the delivery of material such as coal - Google Patents

Abstract

617,327. Power-operated shoots. MAVOR & COULSON, Ltd., JACKSON, D., and THOMSON, J. Jan. 24, 1945, No. 23194/44. [Classes 78 (i) and 78 (iv)] A shoot 5 for feeding coal to a succession of vehicles 19 has a discharge door 12 which is open only when a vehicle is in the filling position and power means 17 operated by the apparatus 21 which moves the vehicles and serves to open and close the door as each vehicle is moved into and out of the filling position. In the embodiment shown in the Figure, coal from conveyer 8 falls down shoot 5 (which is oscillated by link 11 from poweroperated arm 10) and enters stationary hopper 9 where it is fed through door 12 which is worked by link 15, bell-crank levers 18 and hydraulic ram 17 in conjunction with ram 22 which pushes successive empty wagons 19 into place beneath the door whilst the latter is closed, and auxiliary ram 21 which takes over the movement of the wagon and moves it forward slowly so as to distribute evenly the coal that falls when the door is opened. Pistons 24, 23 of rams 22, 21. roll on wheels 26 having platforms 25 and catch bars 28 which push the waggons by their axles 29. The valves controlling the hydraulic system are valve 38, the tappet 42 of which is automatically motivated by lever 18; valves 33, 34, the handles 35, 36 of which are worked by an operator, each having three positions, and valve 37, the tappets 39, 40 of which are automatically operated by striker 41 on ram 22. Mode of working. Commence with door 12 closed, i.e. ram 17 extended, and rams 22, 21 drawn backwards. Operator moves lever 36 so that ram 22 moves empty truck forward and striker 41 operates valve 37 so that ram 17 is retracted. Accordingly, coal falls and valve 38 is automatically struck to stop the forward movement of ram 22. Operator moves lever 35 so that auxiliary ram 21 moves the wagon forward slowly and moves lever 36 so as to retract ram 22 and thus to actuate valve 37 in the reverse direction; when the operator observes that the wagon is full, he moves the lever 35 again so that ram 21 retracts and finally he moves lever 36 again so that ram 17 advances, closes door 12 and operates valve 38, so leaving the apparatus ready for the next wagon. Specification 619,670 is referred to.