B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
22/11
B22C 9/10 (2006.01)
Patent
CA 1128726
ABSTRACT OF THE DISCLOSURE Apparatus for supplying varied quantities of a gaseous curing agent to a rotary core making machine has a first piston and cylinder, a flow control for controlling the flow of a non-reactive gas from a source to either side of the first piston and for exhausting gas simultaneously from the other side of the piston in synchronization with the rotation of the core making machine. A first valve has an electrically controlled inlet and outlet, and a second cylinder is aligned coaxially with the first cylinder, with a first piston rod connecting at one end to one side of the first piston and extending into the end of the second cylinder. A second piston reciprocable within the second cylinder is attached on one side to the other end of the first piston rod and defining with its other side a chamber in the second cylinder. A rotatable wheel is posi- tioned with its axis normal to the axis of the first and second cylinder, and a plurality of stops are mounted radially on the periphery of the wheel, the stops being variable in length and alignable coaxially with the second piston rod. A sprocket wheel is attached coaxially to the rotatable wheel, a second piston rod is connected at one end to the other end of the first piston, and a pawl rod is fixed to the other end of the second piston rod, extending in the same plane as, and tangentially to, the sprocket wheel and adapted at its free end to engage the sprocket wheel when moved axially toward the first cylinder. A first conduit is connected between the chamber in the second cylinder and a reservoir of liquid catalyst, a first check valve is located intermediate the ends of said first conduit, a second conduit is connected at one end to the first conduit inter- mediate the first check valve and the chamber in the second cylinder and is connected at its other end to the vaporizer nozzle. A third conduit connects the source of compressed non-reactive gas and the inlet of the first valve, a fourth conduit connects the outlet of the second valve and the inlet of the vaporizer nozzle, and a fifth conduit connects the outlet of the vaporizer nozzle to a core making machine.
371552
Gowling Lafleur Henderson Llp
Michelson Anatol
LandOfFree
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