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LEVER-RATCHET RACK-TYPE DEVICE FOR CONTROLLING THE HEIGHT OF LOAD SUSPENSION |
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Ansicht vergrößern
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Beschreibung
Pawls 2 and 3 turn about axis A. Rod 4 ends in head a which slides along guide b. The distance h between the hooks is varied by engaging ratchet-tooth rack 1 at various positions along its height by pawls 2 and 3. |
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