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This machine was manufactured by Adrian Shoe Fitter, Inc. circa 1938 and used in a Washington, D.C., shoe store Shoe-fitting fluoroscopes , also sold under the names X-ray Shoe Fitter , Pedoscope and Foot-o-scope , were X-ray fluoroscope machines installed in shoe stores from the 1920s until about the 1970s in the United States, Canada, United ...
Invented by Jack Kevorkian, who used this device and called it a "Thanatron" or death machine after the Greek daemon, Thanatos. It worked by pushing a button to deliver the euthanizing drugs mechanically through an IV. It had three canisters mounted on a metal frame. Each bottle had a syringe that connected to a single IV line in the person's arm.
Companies who manufactured violet ray devices made many other types of electrical appliances as well, e.g. Star Electric, which also manufactured stock ticker machines. Many of the companies who were able to continue manufacturing violet rays after the Depression stopped making them due to World War II , when they began manufacturing radio ...
The Rotolactor is a largely automatic machine used for milking a large number of cows successively using a rotating platform. It was developed by the Borden Company in 1930, and is known as the "rotary milking parlor".
Franklin D. Jones, in his textbook Machine Shop Training Course (5th ed), [4] noted: "In many cases, a jig borer is a 'jig eliminator.' In other words, such a machine may be used instead of a jig either when the quantity of work is not large enough to warrant making a jig or when there is insufficient time for jig making."
A manure spreader, muck spreader, or honey wagon is an agricultural machine used to distribute manure over a field as a fertilizer. A typical (modern) manure spreader consists of a trailer towed behind a tractor with a rotating mechanism driven by the tractor's power take off (PTO). Truck mounted manure spreaders are also common in North America.
A transplanter is an agricultural machine used for transplanting seedlings to the field. Transplanters greatly reduce time required to transplant seedlings compared to manual transplanting. Among the crops that are transplanted with transplanters are strawberries, vegetables, tomatoes, cabbages, tobacco and rice.
A corn harvester is a machine used on farms to harvest corn, stripping the stalks about one foot from the ground shooting the stalks through the header to the ground. The corn is stripped from its stalk and then moves through the header to the intake conveyor belt .