| 摘要 |
The filling device for use in connection with a rotary filling machine, includes a housing enclosing an air-return chamber, a vertically reciprocating air-return pipe projecting with its upper part into the air-return chamber, a rack-and-pinion drive rotatably supported in the air-return chamber and having a rack secured to the upper part of the pipe and a pinion supported for rotation on a shaft passing through the housing and driven via a lever by a cam secured to the non-rotating part of the filling machine.
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