| 摘要 |
An extensible support is provided for the Lifting and Swinging Work Transfer Device of Kirsch et al. U.S. Pat. No. 3,406,837 of Oct. 22, 1968. This extensible support consists of a base adapted to be mounted near the machine to be served by the work transfer device. An external or auxiliary vertical fluid pressure cylinder mounted on this base contains a vertically-reciprocating reciprocating piston, the piston rod of which carries a cross-head connected to arms which in turn carry a horizontal platform on which the work transfer device is mounted. The auxiliary vertical fluid pressure cylinder, when supplied with pressure fluid, such as compressed air, raises the platform and with it the work transfer device, thereby supplementing and extending the range of lift possessed by the work transfer device itself.
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