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sylvester

A hand-operated device for withdrawing supports from the waste or old workings. The appliance enables a leverage of about 30 to 1 to be applied. A long chain allows it to be positioned a safe distance from the support to be extracted. It may also be used for applying tension or for moving machines short distances.

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Δημιουργός

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 points
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