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Philibert Bonvillain
Eugene Ronceray
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Lifting Devices For Agricultural Implements
(AREA)
Abstract
11,844. Bonvillain, P., and Ronceray, E. June 29, 1905, [date applied for under Patents Act, 1901]. Actuating lift valves; self-closing valves. -A valve-box attached to the cylinder of an hydraulic sand - moulding machine contains two valves 52, 53 held on their seats by springs in screw-caps 59 except when raised by a right or left hand movement, respectively, of a control handle 56. The port 51 communicates with the cylinder, the port 60 with the pressure, and the port 62 with the waste.
GB190611844D1905-06-291906-03-21Improvements in or relating to Sand-moulding Machines.
ExpiredGB190611844A
(en)