AND WINDING DRUM. Ill 



Such an arrangement is shown in Plate VIII. 



This winding drum was exhibited by Boulet, Brule, and 

 Co., at the Agricultural Show held at Paris in 1892. It 

 may be attached by means of iron straps in front of any 

 portable engine ; the cable passes over a horizontal pulley 

 fixed upon the frame of the drum under the engine. The 

 whole system travels on rails, the displacement being 

 effected by a small capstan fixed in front of the frame 

 of the drum, operating on a rope anchored in the line 

 of advance. Fig. 68 represents a machine with a single 

 drum, the plough being hauled back by a team. In certain 

 oases, as we shall hereafter see, two drums may be used, one 

 of these serving to haul the plough back, opening a furrow 

 at the same time if a balance-plough is being used. 



Systems in which the plough is hauled back with a 

 smaller cable are numerous. We will only mention two 

 examples. To keep the two cables apart a fixed pulley B 

 (Plate VIII.) is anchored at some distance in the field. The 

 drum A winds the traction cable , passing over the pulley 

 a and fastened to the plough C ; the return cable winds over 

 the drum R, after passing over the pulleys B and b. The 

 engine M and the pulley n are displaced after each furrow 

 in the direction of arrows 1 and 2, the pulley B remaining 

 stationary while a certain number of furrows are turned. 



Fig. 69 represents Pelous' system ; on the frame A, 

 mounted on four rollers g, the portable engine M is placed ; 

 n toothed-wheel, gearing with a chain m, is keyed on the 

 main shaft of the latter. The intermediate shaft of the 

 winding drum gears directly with the drums L and E, on 



Fig. 69. Pelous' Steam Winding Drum. 



