Radio-controlled skyline carriage

Details Radio-controlled skyline carriage Radio-controlled skyline carriage

1982-07-21

1985-05-07

Blix, Trygve M.

Traversing hoists

Overhead

Cable

212 89, 212122, B66C 2100

Patent

active

045152810

ABSTRACT:
A carriage for moving logs along a suspended skyline includes a pair of skyline wheels which rotate as the carriage moves along the skyline to drive a pair of alternately operating pumps which supply hydraulic pressure to a carriage hydraulic system. A first larger pump operates as the carriage moves uphill, while a second smaller pump operates when the carriage moves downhill. The carriage hydraulic system powers a driven hydraulic sheave and pressure roller for paying out a mainline. A skyline clamp is applied by a hydraulic ram and includes cammed surfaces which ride over a roller to ensure that the carriage will remain clamped to the skyline should the ram lose hydraulic pressure.

REFERENCES:
patent: 569400 (1896-10-01), Balch
patent: 2790561 (1957-04-01), Wyssen
patent: 3083839 (1963-04-01), McIntyre
patent: 3247933 (1966-04-01), Hanna
patent: 3776390 (1973-12-01), Junes et al.
patent: 3844419 (1974-10-01), Holmes
patent: 3863774 (1975-02-01), Brandt
patent: 4127197 (1978-11-01), Dumont
patent: 4164289 (1979-08-01), Haliewicz
patent: 4238038 (1980-12-01), Fikse et al.

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