Improvements in means for controlling the supply of hot liquid to a container applicable to the feeding of molten metal to extrusion presses and to other purposes

摘要

434,041. Delivering measured quantities of liquid. BEAVER, C. J., Bell Place, Stamford Road, FAIRFIELD, T. J., Newlands, Talbot Road, both in Bowdon, Cheshire, and GLOVER & CO., Ltd., W. T., Trafford Park, Manchester. June 2, 1934, No. 16449. [Class 135] [See also Group XXII] The supply of hot liquid from a vessel to a second relatively movable vessel is initiated by means actuated by the relative movement, and is cut off when a predetermined quantity has been delivered by a device responsive to the temperature of the liquid. Molten metal is delivered from a chamber f through a valve g and channel h to the vertically movable vessel d of an extrusion press such as described in Specification 394,427, [Group XXII]. The valve g is opened by a thrustor comprising a motor m and a centrifugal pump and piston device, the motor being energized from mains l. A switch n is closed to open the valve g when a projection s movable with the container a and vessel d strikes an arm q1. A thermometer bulb v in the upper part of the vessel d communicates through a capillary tube u with a Bourdon tube t to rock a switch p, when a predetermined quantity of metal has been delivered, to open the circuit to the motor m and close the valve g. On the return of the vessel d, the switch n is opened by an arm q2 before the switch p again closes. Warning lights x, y, z indicate successive stages in the operation.