Animal husbandry – Milkers
Patent
1978-05-05
1980-04-29
Chamblee, Hugh R.
Animal husbandry
Milkers
119 1429, 119 1431, 119 1451, 119 1452, A01J 504, A01J 510
Patent
active
042000580
ABSTRACT:
Milking is carried out using milking cups each having a teat rubber liner in which the teat is received. Pressure is periodically applied to the outside of the liner to massage the teat and suction is applied to the milk discharge duct so that the milk is discharged therefrom. A valve in the milk discharge duct in the form of a section of rubber hose has a relatively more elastic zone on its surface and sits in a housing to which pressure is periodically applied during the massage pulse so that the elastic zone is indented to close at least the milk free cross section of the hose. The teats are thus periodically isolated from vacuum which is kinder to the teats and prevents reverse washing effects during the massage phase. In modifications the valve is placed at the end of the teat rubber and a series of massage cushions are used to sequentially massage the teat.
REFERENCES:
patent: 904564 (1908-11-01), Ripczinske
patent: 1089839 (1914-03-01), Hulbert
patent: 2340296 (1944-02-01), Bender
patent: 3077180 (1963-02-01), Hagg et al.
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