jam dragger

Lumbering

DCHP-1 (pre-1967)

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an arrangement of ropes attached to a key-log (def. 1) so it could be pulled free to release a log jam.

See: key-log(def. 1)

Quotations

1961

Sometimes the key logs of the jam could be pried loose from the shore with the jam dragger, a series of ropes attached to the key logs.