John L Farmer

US Patent:

39927598, Nov 23, 1976

Filed:

Aug 25, 1975

Appl. No.:

5/607289

Inventors:

John Edgar Farmer - Chicago IL

Assignee:

Farmer Mold and Machine Works, Inc. - Chicago IL

International Classification:

B23P 1300
B22C 926

US Classification:

29 2

Abstract:

A bottom gating mold system which is particularly adapted for molding relatively flat and generally elongated and/or wide metal objects such as battery plates or grids.

US Patent:

40530124, Oct 11, 1977

Filed:

Aug 25, 1975

Appl. No.:

5/607288

Inventors:

John Edgar Farmer - Chicago IL

International Classification:

B22D 3504

US Classification:

164254

Abstract:

An apparatus and method for gravity molding articles such as battery straps or the like in open or non-pressurized molds. The apparatus uses an upwardly inclined molding head including a molten metal reservoir and a nozzle discharge end positioned adjacent the mold for delivering molten metal into the mold. Delivery of molten metal can be from a molten lead vat through a siphon conduit and stop-cock valve at the mold head. At the end of each pour, upon closing of the stop-cock valve, a small amount of molten metal is withdrawn from the heated reservoir into a suction system to decrease the level of the reservoir slightly below the lower lip of the nozzle end and thereby prevent dripping from the nozzle end between pours. At the beginning of each pour, the molten metal is released from the suction system back into the reservoir for use in the pour.