Blade mounting for a rotary mower

Details Blade mounting for a rotary mower Blade mounting for a rotary mower

1980-05-16

1982-02-02

Hirsch, Paul J.

Harvesters

Cutting

Cutter members

A01D 5518, A01D 5522

Patent

active

043132979

ABSTRACT:
A rotary mower has a cutting plate to which freely pivotal blades are attached by retaining pins. Instead of riveting the pins directly to a leaf spring which holds the pins in place, a keyhole slot is provided in each leaf spring and a narrow waist of the retaining pin fits into rectilinear portion of the keyhole slot and is held in position there by a holding plate riveted to the leaf spring. This allows case hardening of the entire retaining pin and prevents nonuniform stresses in the latter from causing breakage.

REFERENCES:
patent: 3247657 (1966-04-01), Scarnato et al.
patent: 3327460 (1967-06-01), Blackstone
patent: 3418793 (1968-12-01), Brewer
patent: 3507104 (1970-04-01), Kline et al.
patent: 3581482 (1971-06-01), Reber et al.
patent: 3604189 (1971-09-01), Harer et al.
patent: 3662529 (1972-05-01), Glunk et al.

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