GB320659A - Improvements in hopper and like door operating mechanism - Google Patents

Abstract

320,659. South Metropolitan Gas Co., and Skinner, A. J. July 18, 1928. Charging.-Apparatus for charging horizontal retorts 2 from a series of fixed overhead hoppers 1 having sliding doors x, comprises a travelling carriage carrying two power-operated mechanisms, governed by a single control, for respectively actuating the doors x and a shoot v which is mounted on the carriage and directs the charge into the retort. As shown, the doors x and shoot v are actuated by hydraulic cylinders t, u, the piston-rod ends of which communicate with a constant-pressure pipe system p and the other ends with a pipe system q which may be opened to pressure or exhaust by a cock o. The piston rod h of the cylinder t is connected by pivoted arms j, k, shaft l, and links w, n to a slidable member a formed with a jaw b adapted to engage with rods c which are carried by arms d projecting from the doors x. The latter are U- shaped and carry rollers adapted to run on guides g mounted on the hoppers 1. The lever system j - - n is so arranged that, after the door x is fully closed, the member a is moved slightly in the reverse direction to disengage the jaw b from the rod c and so permit free movement of the carriage. The Figure shows the parts in position for commencing the charging of a retort w, the cock o being set to open the pipe system q to full pressure. Setting the cock o to exhaust causes the shoot v to move into the mouth of the retort wand the member a to be retracted to open the door x of the appropriate hopper 1. When full pressure is again applied to the system q, the shoot v is withdrawn and the door x closed.