. Canadian machinery and metalworking (January-June 1919). DOUBLE BALL. Here are some of the reasons why thePierce-Arrow Motor Car Company,Bethlehem Steel Company and otherbig concerns use Chapman DoubleBall Bearings. They reduce power costs 15/f to 40(. They are entirely drip-proof. They are dust and dirt-proof. They require lubrication only once a year. They are built to fit any hanger frame. We also manufacture Annular and Thrust Bearings forautomobiles and machinery. Chapman Double Ball Bearing Company of Canada, Limited

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