Loaders for use in tunnels

Details Loaders for use in tunnels Loaders for use in tunnels

1977-09-29

1980-02-12

Werner, Frank E.

Material or article handling

Vertically swinging load support

Shovel or fork type

37135, 414709, E02F 300

Patent

active

041881656

ABSTRACT:
A loader comprises a bucket at the end of a dipper arm swinging from a cross-member on an upstanding yoke. The dipper arm swings between the uprights to the yoke for the bucket to pick up material on one side and deposit it on the other side. A winch actuates the bucket to dig and lift on the one side and a cam causes the bucket to turn upside down on the other side to deposit its load. The yoke can lean to the one side to extend the reach of the dipper arm and can slew about a vertical axis. The yoke can center itself when the dipper arm swings to the other side. For travelling the whole assembly can fold into a compact bundle.

REFERENCES:
patent: 1256401 (1918-02-01), Ward
patent: 2109388 (1938-02-01), Heller
patent: 2119139 (1938-05-01), Owen et al.
patent: 2347456 (1974-04-01), Becuwith

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