Knollin's Cow Milker, 1877
In 1877 Edward Knoflin invented a milking machine. The apparatus consisted of a glass globe (A), large enough to contain the maximum amount of milk yielded by one cow, a metal cover (B), was hermetically sealed by a pivoted bar and thumbscrew and equipped with spigots over which a number of rubber tubes were fitted. One of the rubber tubes was connected to an air pump, the other terminated in metal tips that could be inserted into the cow's teats. A handle for carrying the glass globe was fitted to the cover, and was also used for fastening the device to the cow's body by means of straps. By turning on the suction pump, the air in the globe was rarefied; the suction valve having been closed, the metal tips were inserted in the animal's teats, the valves in the adaptors between the tips and the tubes were opened, and the milk flowed into the globe. A patent was issued for this invention October 3, 1876.
Size: 3824px × 3600px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1877, 19th, agriculture, air, america, american, apparatus, art, artwork, book, bw, century, dairy, device, drawing, edward, equipment, farming, glass, globe, historic, historical, history, illustration, invention, knoffin, knoffins, knollin, machine, milk, milker, milking, pdc, production, pump, rubber, science, states, teats, technological, technology, tubes, united, usa, valves
