Boom and dipper stick construction

Details Boom and dipper stick construction Boom and dipper stick construction

1982-02-16

1983-07-12

Eickholt, E. H.

Excavating

Railway graders

Side former

29463, 29DIG48, 414694, E02F 502

Patent

active

043923143

ABSTRACT:
A boom and dipper stick construction for mobile excavators and an improved method of manufacturing the same. The boom and dipper stick are fabricated from side plates that are butt welded together with respect to various hinge point locations to eliminate the necessity of doubler plates on the sides of the structures. The butt welds are located at non-critical areas to provide for even stress flow and ease of manufacture.
A method of welding together the side plates of the boom and dipper stick construction in an end to end abutting relationship in a manner which attains a complete weld penetration over the entire length of the joint.

REFERENCES:
patent: 2895236 (1959-07-01), Pilch
patent: 3527362 (1970-09-01), Allen
patent: 4293270 (1981-10-01), Prime
patent: 4297815 (1981-11-01), Moro et al.

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