A parts washer is a device commonly found in engine and machine repair shops, which is used to remove grease, dirt, and debris from machine components that have been used for an extended period of time in dirty and/or greasy environments.
Ben Palmer invented the Parts Washer in 1954. The parts washer was a success from the start, and he decided in the early 1960s not to sell his machine, but to lease it to the customer and service it by removing and replenishing the used solvent.
A typical parts washer is filled with several gallons of solvent that is stored in a settling pan at the bottom of the washer. A small flame-tight electric liquid pump is immersed in the solvent and skims clean solvent from near the top of the settling tank, and pumps it at low pressure through a stiff flexible nozzle onto a metal grating above the liquid where the metal components rest. Dirt and dissolved heavy greases fall into the bottom and settle to the bottom of the tank.
Originally oil distillates such as gasoline and kerosene were used as solvents for washing machine parts, but these are highly volatile and can ignite easily, potentially leading to an explosion and severe burns to the workers.
Modern degreasers are much safer to use and pose fewer health hazards to the workers, however there is still a risk of the fluid catching fire. For this reason the parts washer typically has a large cover that is propped open by a lead fusible link. In the event of a fire, the lead will melt and the cover will slam shut to snuff out the fire before it can cause further damage to the building.
References
- ^ http://www.safety-kleen.com/aboutus/pages/ourstory.aspx
External links
- A Gasoline Sprayer for Cleaning Engine Parts , Popular Science monthly, February 1919, page 127, Scanned by Google Books: http://books.google.com/books?id=7igDAAAAMBAJ&
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