Metal cutting shear with changeable multiple cutting edge portio

Details Metal cutting shear with changeable multiple cutting edge portio Metal cutting shear with changeable multiple cutting edge portio

1988-08-04

1990-02-06

Yost, Frank T.

Cutlery

Combined cutlery or combined with ancillary feature

With material-holder or disposal

30228, 414740, B23P 1900

Patent

active

048979210

ABSTRACT:
A material handling and metal shear attachment for a backhoe is mounted on the boom or dip stick of the backhoe for actuation by the hydraulic system of the backhoe. A fixed blade is pivotally secured to the boom or dip stick and a movable cutting blade is pivoted to the fixed blade. A hydraulic piston and cylinder assembly mounted on the fixed blade moves the movable cutting blade in shearing relation to the fixed blade. The fixed and movable blades are shaped and positioned relative to their pivotal engagement to move objects being sheared toward the blade's pivotal engagement where the cutting force is the greatest. The movable blade and the fixed blade have changeable cutting edge portions, each of the portions having a number of cutting edges on both sides so that worn cutting edge sections are replaced quickly and easily by changing the position of the cutting edge portion relative to the movable and fixed blades on which they are positioned.

REFERENCES:
patent: 4403431 (1983-09-01), Ramul et al.

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