170 TRENCHING AND SUBSOILING FOR 



Page 

 STEAM -WINDING DRUMS continued. 



P^card's Steam- winding Drum ... ... ... ... 56 



Description ... ... ... ... .. ... 56 



Working ... ... ... ... ... ... 56 



Pineau's Steam-winding Drum ... ... ... ... 58 



Description ... ... ... ... ... ... 58 



Working ... ... ... ... ... ... 59 



Mechanical Yield of Steam-winding Drums .. .. ... 60 



Area Ploughed ... ... ... ... ... ... 60 



Cost of Trenching or Subsoiling with Steam- winding Drums ... 61 



(a) Simple-effect Plant ... ... ... ... 61 



(6) Double-effect Plant ... ... ... ... 62 



II. 



APPLIANCES FOR TRENCHING AND SUBSOILING, BY MAX RINGLEMANN 64 



Horse-gins ... ... ... ... ... ... 70 



Installation of Trenching and Subsoiling Plants ... ... 76 



Simple-effect Capstans ... ... ... ... 76 



Double-effect Capstans ... ... ... ... 84 



Stationary Winding Drums ... ... ... ... 85 



Work of Winding Drums ... ... ... ... ... 90 



SPECIAL SUBSOILERS ... ... ... ... ... 97 



Combined portable Engine and Winding Drum ... ... 106 



Displacement System ... ... ... ... ... 1 06 



Stationary System ... ... ... .., ... 114 



III. 



PRACTICAL INSTRUCTIONS REGARDING THE USE OF STEAM-WINDING 



DRUMS FOR TRENCHING AND SUBSOILING, BY A. DEBAINS ... 121 



IV. 



THE ADVANTAGES OF STEAM CULTIVATION, BY PROF. JOHN SCOTT ... 134 



Systems of Steam Cultivation ... ... ... ... 136 



The Double-engine System ... ... ,.. ... 136 



The improved Single-engine System ... ... ... 139 



Implements used in Steam Cultivation ... ... ... 140 



Balance Plough ... ... ... ., ... ... ... 140 



Subsoiling Plough ... ... ... ... 141 



Sutherland Reclamation Plough ... ... ... ... 141 



Turning Cultivator ... ... ... ... 142 



Grubber and Knifer ... ... ... .. ... 144 



Turning Harrow ... ... ... ... ... ... 144 



Howard's Steam Harrows ... ... ... ... ... 146 



Fowler's Patent Discer ... ... ... ... ... 147 



Steam Roller ... ... ... ... ... ... 147 



Combined S team Drill and Harrow ... ... ... 148 



V. 



PORTABLE WIND MOTORS APPLIED TO TRENCHING AND SUBSOILING, 



BY M. CHARVET ... ... ... ... ... 149 



Wind ... 149 



Utilization of the motive power of wind ... ... ... 150 



Different Systems of Wind Motors ... ... ... 151 



