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Outside ring shows inflation before application of pressure. Dotted lines show inflation, when under pressure, attempting to take up a smaller diameter, at the same lime undergoing great strain. Spaces between outside and dotted lines show distance the walls of the inflation have to travel when collapsing Outside triangle shows inflation before pressure is applied. Inside dotted lines show walls of inflation yielding to pressure entirely without strain
Progress
1 December 1912
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The Treloar Milking Machine
Progress
1 December 1912
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A soft moulded inflation teat cup. In this cup the moulded inflation is under slight tension and is separate from the claw tube. The latter is integral with a cap which fits over the lower end of the inflation where it folds over the cup case.
New Zealand Journal of Agriculture
15 March 1956
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A soft moulded inflation teat cup. The inflation and claw tube in this type of feat cup are moulded in one piece.
New Zealand Journal of Agriculture
15 March 1956
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A hard moulded inflation teat cup. This type of teat cup has a heavy ribbed moulded inflation which is normally under slight tension.
New Zealand Journal of Agriculture
15 March 1956
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Upper—The rapid destruction of an inflation by the penetration of fat from teat salves applied before milking is shown. In this condition an inflation is a serious contaminator of milk and is unfit for its purpose. It is in an extremely perished condition after 8 weeks' use. The surface has been destroyed by the penetration of fat from teat salves injudiciously applied, and the portion which comes in contact with the cow's teats is-ruined. Lower—inflation is in good condition after 16 weeks' use. The milking machine from which the exhibit was taken was cleaned by the boiling water-caustic soda method twice daily and teat salves were not used on cows' feats before the cups were applied.
New Zealand Journal of Agriculture
15 March 1951
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2. There is a Danger of Inflation
NZ Services Current Affairs Bulletin
4 September 1944
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A soft moulded inflation teat cup. In this experimental teat cup a separate inflation and claw tube are used, the two parts being held together by a compression joint.
New Zealand Journal of Agriculture
15 March 1956
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Left-A hard-moulded teat-cup inflation after one season's use, showing perished surface due to the penetration of fat. Right-The same type of inflation as that at left after two years' use during which it was treated by the boiling water-caustic soda method.
New Zealand Journal of Agriculture
15 November 1949
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Left—A milk-elevator inflation perished by fat penetration. Note the cracked and perished surface, which harbours bacteria. This inflation was washed by hand twice daily. Analysis showed that it had absorbed 5.8 per cent, of fat by weight in 2 months.
New Zealand Journal of Agriculture
15 November 1949
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