Animal husbandry – Milkers – With automatic control
Patent
1978-04-03
1980-02-19
Chamblee, Hugh R.
Animal husbandry
Milkers
With automatic control
A01J 700
Patent
active
041889100
ABSTRACT:
A combination milk flow sensing and vacuum shut-off device comprises a housing defining a milk flow cavity with an inlet port through which milk can flow in freely as it comes from the teat cups and an outlet port of sufficient size such that milk can flow freely out of the milk flow cavity and not accumulate therein; a plunger within the milk flow cavity is suspended by means of a stem extending out of the cavity and attached to and operated by an air pressure cylinder piston unit in such a relationship that the piston unit drives the stem and plunger vertically within the milk flow cavity so that the cut-off plunger may engage with the seat of the milk flow outlet port to cut off milking vacuum or to disengage the seat of the port to admit vacuum; a milking sensor pedal is provided within the cavity and suspended directly beneath the inlet port by means of a pedal shaft extending through the wall of the cavity to support the pedal. The pedal shaft is pivotally mounted. A counter weight assembly is attached to the end of the pedal shaft and mounted outside of the cavity to pivot with the motion of the sensor pedal and pedal shaft as the pedal is activated by flow from the inlet port; a valve closure member is attached by means of a flexible member to the top of the pivotally mounted rocker shaft assembly so that deflections of the milk sensor pedal are transferred to impart a resulting pivotal rocking motion through the rocker shaft assembly and the flexible member to cause the valve member to open and close.
REFERENCES:
patent: 3986482 (1976-10-01), Novak
patent: 3991716 (1976-11-01), Reisgies
patent: 4005680 (1977-02-01), Lole
Chamblee Hugh R.
Freedman Philip D.
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