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AssigneeHunter Automated Machinery Corporation
InventorWilliam A. Hunter
Estimating the term…
The pattern plate of a matchplate molding machine is attached to a drag flask by spring-loaded clamps which may be rapidly opened to enable the plate to be quickly and easily removed from the flask and replaced by another plate. Locating members are attached to the flask in laterally opposed relation with the clamps and coact with the clamps to fixture the pattern plate accurately on the flask. A removable operating handle is provided for opening the clamps and carries a latch for releasably holding the clamps in their open positions during changing of the pattern plates. A conventional bolt-on pattern plate may be converted for use with the clamping system by attaching bars with downwardly inclined upper surfaces to the pattern plate, the bars being secured within notches in the side edges of the plate.
A generally rectangular pattern plate for forming a molding cavity in sand, said plate having first and second generally parallel edge portions, notch means formed in each of said edge portions, bar means seated in each of said notch means and secured to said pattern plate, each of said bar means having an inclined upper surface which slopes downwardly upon progressing outwardly away from the respective edge portion of said plate, at least part of each inclined upper surface projecting outwardly beyond the respective edge portion of the plate.
Dependencies are inferred from the claim text.