Timing belt adjustment mechanism

Details Timing belt adjustment mechanism Timing belt adjustment mechanism

1980-12-18

1982-03-02

Hirsch, Paul J.

Harvesters

Motorized harvester

With selective control of drive means

56DIG22, A01D 6900, A01D 5526

Patent

active

043173250

ABSTRACT:
A belt tension and timing adjustment mechanism particularly for the timing belt of a lawn mower or the like having a plurality of rotary cutting blades. One rotary blade is mounted to the mower deck by a mounting plate having a plurality of bolts. The deck includes an aperture which closely receives one of the bolts, which defines a pivot axis, and the remaining bolts are received in elongated slots for pivotal movement of the rotary blade assembly to adjust the tension in the belt. The plate is rotated on the pivot axis by an adjustment bolt assembly having a bolt received through integral tabs on the adjustment plate and deck. The plate is spring biased by a spring and spacer assembly on the bolt against the tension of the belt, wherein the correct belt tension is indicated by the space between the adjustment bolt head and the plate tab, making belt tension adjustments simple and accurate.

REFERENCES:
patent: 2285230 (1942-06-01), Roberton
patent: 2348612 (1944-05-01), Deacon
patent: 2823507 (1958-02-01), Cooper et al.
patent: 3038288 (1962-06-01), Deptula et al.
patent: 3136106 (1964-06-01), Joslin
patent: 4231215 (1930-11-01), Klas

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