Twin boom dragline

Details Twin boom dragline Twin boom dragline

1978-03-03

1979-11-20

Crowder, Clifford D.

Excavating

Snow or ice removing or grooming by portable device

Railway clearer

212 47, E02F 348

Patent

active

041745795

ABSTRACT:
A dragline has two booms at a ninety degree angle with the dragrope between them. Each boom has a variable speed hoist mechanism and both hoist ropes are connected to the bucket. Either boom can be used as a digging boom, with the other serving as a dumping boom, and relative hoist speeds are controlled to move a filled bucket to a dumping position under the dumping boom and back to start position under the digging boom.

REFERENCES:
patent: 517559 (1894-04-01), Arch
patent: 534973 (1895-02-01), Smith
patent: 825200 (1906-07-01), Dunlop
patent: 1002732 (1911-09-01), Morris
patent: 1015240 (1912-01-01), Miller
patent: 1219371 (1971-03-01), Butterfield
patent: 1331883 (1920-02-01), Stuart
patent: 1335455 (1920-03-01), Stuart
patent: 1464454 (1923-08-01), Thompson
patent: 1636136 (1927-07-01), Kernes
patent: 1705274 (1929-03-01), Von Thaden
patent: 2530150 (1950-11-01), Bryant
patent: 2602245 (1952-07-01), Nickles
patent: 2609621 (1952-09-01), Babin
patent: 3386593 (1968-06-01), Sprengel
patent: 3446363 (1969-05-01), Sprengel
patent: 3901341 (1975-08-01), Stoldt
patent: 3959899 (1976-06-01), Rangaswamy

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