B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
39/113, 22/80
B22D 41/24 (2006.01)
Patent
CA 1340029
A method of and change to the lower portion of the slide gate to be asymmetrical in the gate loading direction such that altering the supporting loading rail portions of the frame on the mechanism to prevent loading of the gate in the incorrect orientation is disclosed. The frame for the existing sliding gate valve is asymmetrical about the gate change axis which thereby eliminates the requirement or left and righthanded frames to make left and righthanded mechanisms. The method to change a mechanism from a left to a righthand load requires two additional parts. In this change the frame is changed to be asymmetrical and yet require only the same two additional parts to change from left to righthanded load. Left and righthand load is defined by the operator's position being the firing cylinder end of the mechanism with the operator facing the mechanism. A righthand load mechanism has the loading port on the operators right side. The lefthand load mechanism has the loading port on the left side. The sliding gate valve frame is to be modified so that the gate loading rail on the cylinder end on the righthand side of the mechanism is extended. This requires a righthand load to load the sliding gate with the long ledge towards the firing cylinder. The same gate conformed by the method into a lefthand load valve assembly has the loading rail away from the cylinder extended on the lefthand side of the mechanism. This forces the gate to be loaded with the long ledge away from the firing cylinder during lefthanded loading. Thereby, a single frame with the asymmetrical loading port arrangements, yet otherwise symmetrical along the firing axis, enables a non-reversible sliding gate without the requirements of dedicated left and righthanded mechanism frame assemblies. The slide gate has asymmetrical loading ledges and preferably symmetrical throttling rails.
601274
Dennison Associates
Flo-Con Systems Inc.
LandOfFree
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