| 摘要 |
A press (1) for fabrication of building components including: a) an upper platen (2); b) a lower platen (3); the upper platen and/or lower platen movable towards and away from the other; c) a first and second hydraulic means located on a base, each hydraulic means including: i) a cylinder (5, 6); ii) a piston (9, 10) located in the cylinder (5, 6) defining a first (11, 13) and a second chamber (12, 14) in the cylinder (5, 6), the piston (9, 10) sealingly engaging the cylinder (5, 6) and movable in the cylinder (5, 6); and iii) a piston rod (7, 8) connected to the piston (9, 10) and extending through the second chamber (12, 14) to engage the upper (2) or lower platen (3) wherein the first (11, 13) and second chambers (12, 14), each have an inlet/outlet (15, 16 and 17, 18) for hydraulic fluid and the second chamber of the first hydraulic means is in fluid communication with the first chamber of the second hydraulic means; and d) means to pump hydraulic fluid into the first chamber of the first hydraulic means.
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