Positive engagement fail safe mechanism and lift belt constructi

Details Positive engagement fail safe mechanism and lift belt constructi Positive engagement fail safe mechanism and lift belt constructi

1982-06-28

1983-06-21

Gluck, Richard E.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

187 81, 188 651, F16H 2702

Patent

active

043888372

ABSTRACT:
A self-energizing, positive engagement, fail safe mechanism for long stroke, well pumping units, whether powered mechanically or hydraulically, and which employ a lift belt. Upon failure of the sucker rod, polish rod or lift belt, a wedge shoe breaking arrangement drops and engages to jamb the lift belt against a stationary brake beam. Any continued movement of the belt only forces the safety wedge shoe brake arrangement into tighter engagement with the lift belt and brake beam. The lift belt is attached to the yoke supporting the polish rod by a bracket, dual clamping plate, bolt, and nail or pin assemblage. This same assemblage may be used to attach a counterweight to the lift belt.

REFERENCES:
patent: 973518 (1910-10-01), Kulp
patent: 3248958 (1966-05-01), Bender
patent: 3483828 (1969-12-01), Bender
patent: 3538777 (1970-11-01), Bender
patent: 3777491 (1973-12-01), Bender
patent: 3792836 (1974-02-01), Bender
patent: 3986564 (1976-10-01), Bender

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