Metal fusion bonding – Process – With shaping
Patent
1977-08-11
1978-08-08
Kelly, Donald G.
Metal fusion bonding
Process
With shaping
228119, 228189, 212 59R, 212144, 214145R, B23K 3102
Patent
active
041051513
ABSTRACT:
Method and apparatus for altering or retrofitting an excavating crane such as a trench hoe, back hoe, etc., into a lifting crane suitable for scrap handling are disclosed. The conversion is accomplished by cutting V-shaped notches into the side plates of a conventional boom at a point adjacent and outboard of the point of connection between the main hydraulic piston and the main boom; bending the boom so that the edge surfaces formed by the sides of the V-shaped notches are brought into abutment and welding the same together. In this fashion the geometry of the main boom is altered without any necessity for altering either the pivot point, the stroke of the pistons, or any other portion of the overall crane in order to change the lifting arc and permit a greater lifting capability. By this modification, the crane becomes suitable for scrap handling wherein the problem is mainly lifting substantial weights, as contrasted to excavating operations where the reach of the boom arm is of primary importance. The invention also contemplates applying reinforcing plates adjacent the weld point to strengthen the completed unit.
REFERENCES:
patent: 3149730 (1964-09-01), Mork
patent: 3777918 (1973-12-01), Barber
Kelly Donald G.
Ramsey K. J.
Taylor Reese
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