Running skyline intermediate support and multi-span carriage

Details Running skyline intermediate support and multi-span carriage Running skyline intermediate support and multi-span carriage

1979-12-11

1982-09-07

Basinger, Sherman D.

Traversing hoists

Overhead

Cable

212 71, 212 76, 212 83, 212117, 104115, 104197, 24221A, B66C 2100

Patent

active

043479383

ABSTRACT:
A yarder is employed with a running skyline provided with a carriage. The running skyline has an intermediate suspended support consisting of a hanger bar with a shoe pivotally connected to the lower end of the hanger bar by a transverse shaft. The shoe has supporting sheaves and an enclosure rail, with the skyline haulback line supportingly received between the rail and the sheaves. The carriage is open on one side so as to be able to pass the transverse shaft of the intermediate suspended support. The open side of the carriage has a yieldable safety gate which allows the carriage to pass the transverse shaft but which retains the haulback line within the carriage. The lower portion of the carriage has respective sheaves for a slack pulling line and a log suspension line to which logs to be transported are connected. A mainline extends between the yarder and a junction member connected to both the slack pulling line and the log suspension line. The upper portion of the carriage has sheaves normally engageable on the haulback line and substantially conformably engageable on the rail when the carriage passes the intermediate suspended support.

REFERENCES:
patent: Re27621 (1973-04-01), McIntyre et al.
patent: 1003950 (1911-09-01), Rosada
patent: 1144060 (1915-06-01), Phillips
patent: 1206581 (1916-11-01), Opsal
patent: 1222007 (1917-04-01), McGuire
patent: 1484387 (1924-02-01), Dickinson
patent: 1569176 (1926-01-01), Dunham
patent: 1801527 (1931-04-01), Newell
patent: 2753610 (1956-07-01), Miller
patent: 3382816 (1968-05-01), Goforth et al.
patent: 3563367 (1971-02-01), Breuer

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