| 摘要 |
914,449. Delivering measured quantities of liquid. HODLER, F. July 26, 1961 [Sept. 8, 1960], No. 27007/61. Class 106 (5). [Also in Group XXII] Molten metal is transported from an open-topped bath 18 to the charging aperture of a casting machine 22 or a mould by means of a charging container 11 movable to and fro on a guide 1, the container having a closable bottom outlet 17 which also serves as an inlet when the container is lowered into the metal bath. The container is moved horizontally on a rack 7 on the guide 1, the driving pinion 6 being driven by a motor 4, and is movable vertically by a rack-and-pinion mechanism 15, 16 driven by a motor 14. The container outlet-inlet 17 is opened by a pneumatic piston 26 carried by a connecting rod 25, and closed by a spring 28. Suction may be applied to the interior of the container by a conduit 31 to prevent leakage during transport, and pressure air may be supplied during discharge into the charging chamber 20. An electrode 36 in the control circuit of the motor 14 ensures that the container 11 is always filled to the same level irrespective of the level of the melt in the bath. Alternatively, the level in the bath may be maintained constant and the container lowered to the same level for each filling. |
