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2 limited rotation dc motors mechanics for electronics
This is a pair of Limited Rotation Motors made by 'MFE' -Mechanics for Electronics of Cambridge, Mass. These were invented in 1965 and probably date to the later 1960s. Each is Model no. R-4-154. I actually had to do a patent search to figure out just exactly what these are-there is extensive information about this unit available on line including internal schematics. These still retain a strong magnetic charge so are likely working-each weighs about one pound. There are four thin input wires-I am guessing but pretty certain this is for low voltage DC.
These are from the estate of a retired HP Engineer involved in the development of their early Computers and Calculators, and is part of a set of odd and unusual items I am listing this week.
Each has light/moderate overall wear-signs of light use.
