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"brimfield" - 1 õppematerjal

Milking machine
24
pptx

Milking machine

devised in the next thirty years, with the foot operated Mehring machine being, perhaps, the ultimate in pre- pulsator suction milkers. • Two cows could be milked at the same time, using this machine, with the operator sitting on it's bench, between the cows, and working the foot levers to provide vacuum. • The Mehring foot power machine was still marketed well into the 20th century and many were sold. A fine example was recently noted at one of the Brimfield shows, priced at $400. Pulsator • The pulsator was first introduced in the "Thistle" milker, using a steam driven vacuum pump. While the Thistle machine presented problems of sanitation, it proved an efficient milker. • In Hoard's Dairyman, in 1898, a reviewer of the Thistle machine demonstrated at the Hamburg Exposition faulted the machine for its intermittent flow, as observed in the glass tube leading to the milk vessel. That reviewer was Dr.

Keeled → Inglise keel
1 allalaadimist


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