the lower chamber is adapted in cooperation with its storage vessel to maintain a vacuum in the system during start up and the transfer of liquid from the storage vessel to the outlet an intermediate smaller upper metering chamber may be included in the device between the large storage chamber and the short siphon leg for accurate metering of smaller quantities of liquid application_number US 27120181 A description referring initially to fig6 and 7 a primary embodiment of the invention includes a core block or body 10 of generally rectangular plan view outline and generally shoe like elevational outline the body 10 may be constructed of any material suitable for containing the liquid or melt 11 at a suitable consistancy for metering such as castable alumina silica refractory material for ladling molten aluminum the core may be cast in one piece molded in halves 12 and 13 and cemented together with a refractory mortar or alternatively manufactured from suitably adapted pipes and containers the conventional heating elements 14 shown in fig1 are preferrably electrical resistance heaters that maintain the temperature of the body at about the same temperature as such melt 11 the body is provided exteriorly with a cover 51 shown in fig1 and suitable insulation not shown is installed between the body exterior and the cover the body is supported above the floor 15 in the position shown in fig2 and fig6 by stand means 16 having a base 17 resting on the floor and upright vertical channels 18 mounted on said base fixedly fastened to the sides 19 and 20 of the body the stand means supports the body adjacent and over the open supply reservoir 23 with the elevated rearward heel like inlet portion 22 of the body partially submerged in the melt.