Resonant sickle drive

Details Resonant sickle drive Resonant sickle drive

1980-09-12

1982-08-03

Hafer, Robert A.

Harvesters

Cutting

Reciprocating central cutter

56306, 56299, A01D 5502

Patent

active

043421865

ABSTRACT:
Resonant frequency operation of a reciprocating sickle (28) of a mowing device is achieved by connecting a torsion bar (97) to its actuating lever (82). The torsion bar (97) spring rate is such that when installed in a sickle and drive system, the resonant frequency of the sickle and its drive falls within the range of frequencies at which the sickle is reciprocated during crop cutting operations.

REFERENCES:
patent: 2118792 (1938-05-01), Horton
patent: 3463018 (1969-08-01), Hale et al.
patent: 3763639 (1973-10-01), Grillot
patent: 3823534 (1974-07-01), Bornzin et al.
patent: 3996806 (1976-12-01), Alexander
"Ingenious Mechanisms for Designers & Inventors", vol. II, p. 382, FIG. 11, 1957.

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