Details of improved air tool manufactured by Rotor Air Drill Co., Cleveland, Ohio; one of outstanding features is incorporation of simple form of speed governor which automatically controlls air consumption according to power required; two models designed to drive drills of 1/2-in. and 3/8-in. diameters respectively.
A new pneumatic drill
Automobile Engr
Automobile Engineer ; 18 , n 243
1928
1 Fig.
Aufsatz (Zeitschrift)
Englisch
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