. Canadian machinery and metalworking (January-June 1919). Crucible AND Open Hearth Steel Tool SteelADrn brand cTcri AIUjU highspeed o 1LLL The John Illingworth Steel Co. 1856 Frankford,New York Office Broadway RALPH B. NORTON, AGENTMontreal, Canada. ( A N A D 1 A X MACII1 X E U Y Volume XXI THE JOHNSON FRICTION CLUTCH

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19