| 摘要 |
1,220,706. Presses. VERSON ALLSTEEL PRESS CO. 26 July, 1968 [23 Aug., 1967], No. 35791/68. Heading B5F. [Also in Division F2] A tie rod nut 15 for a power press comprises a pair of axially relatively movable annular members 16, 25 one of which engages the frame 11 of the press while the other is threaded on the tie rod 12. An expansible chamber 31 is supplied with hydraulic fluid under pressure through a passage 36 to allow shims 40 to be inserted between the members 16, 25 so as to maintain tension in the tie rods when the fluid pressure is released. The press has four tie rods 12 with nuts 15 supplied with pressure fluid by a pump (39) removably mounted on the frame 11. |
