PORTABLE CRUSHING PLANT Filed April 21,, 1966 3 SheetsSheet 2 ts s Jfi N47 Z7 a 22 um Nov. 5, 1968 Filed April 21, 1966 J N. QUINN PORTABLE CRUSHING PLANT 3 SheetsSheet 5 fMmKM United States Patent 3,409,235 PORTABLE CRUSHING PLANT John N. Quinn, Madison, Wis., assignor of fifty percent to Johnson Welding Equipment Co., Inc., Madison, .