Excavators

Details Excavators Excavators

1979-01-15

1981-10-06

Paperner, Leslie J.

Material or article handling

Vertically swinging load support

Shovel or fork type

414694, 414718, 212231, 403110, E02F 338

Patent

active

042932700

ABSTRACT:
An excavator having a boom with slidably engaging base and beam parts is disclosed. The base part is mounted on a support part of the excavator for rotation about a horizontal axis; and a dipper arm which carries an excavating tool is pivotally suspended from the beam part. The base and beam parts are joined by channel section guides which permit sliding movement between the parts. A wedge member releasably fixes the relative position of the base and beam parts by wedgingly engaging both parts.

REFERENCES:
patent: 3465904 (1969-09-01), Pensa
patent: 3608930 (1971-09-01), Saran
patent: 3614134 (1971-10-01), Saran
patent: 3788674 (1974-01-01), Casey
patent: 3891065 (1975-06-01), Iijima
patent: 3923172 (1975-12-01), Jankowiak
patent: 3977148 (1976-08-01), Ranini
patent: 4015730 (1977-04-01), Symmank

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