Animal husbandry – Milkers – With automatic control
Patent
1977-10-31
1980-01-29
Chamblee, Hugh R.
Animal husbandry
Milkers
With automatic control
119 1415, A01J 504
Patent
active
041855868
ABSTRACT:
A metering device for use in connection with an automatic milking machine is disclosed. The metering device includes a bottom metering drain and conventional overflow. Dependent upon milk level, a float is provided which moves between an upper machine "on" position during full milk flow and a lower machine "off" position when the milk flow ceases. The movement of the float activates a magnetic reed switch. An improvement is made to the bottom metering drain in which a first metering disc having a metering aperture allowing milk flow through the aperture overlies a cylindrical indentation in the bottom wall of the chamber. A second disc overlies the first disc. The lower surface of the second disc has a peripheral annular ridge which extends downwardly below the lowest point on the lower surface. The ridge is notched at several locations so that a plurality of orifices result when the ridge confronts the aperture plate. Each of these orifices is approximately half the size of the metering aperture in the lower disc. The relative smallness of these orifices prevents any particles from passing through and plugging the metering aperture. The large number of these orifices allows a substantially larger flow than does the metering aperture so that the metering aperture is the primary limiting factor and particle clogging cannot occur. Cleaning the device is accomplished by moving the respective discs apart from each other by an upward movement of an axially extending rod, which rod is also the guide for the float movement and contains the reed switch.
REFERENCES:
patent: 3786782 (1974-01-01), Abrahamson et al.
patent: 3995664 (1976-12-01), Nelson
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