. The journal of the Ministry of e drainage and open ditching have beensuccessfully practised by this system for many years, and verysuitable implements are provided for that purpose. [a) Mole Draining Machines.—Mole ploughs (Fig. 11) areused to form channels in the subsoil to drain the land. Themachine forms a duct with smooth sides (similar to a moletrack) into which the surface water drains and is carriedaway to the main drain. Stiff, clay soils are best suited to thismethod of drainage, since there is less hkehhood of the soilfining the channels and blocking the water than in
. The journal of the Ministry of e drainage and open ditching have beensuccessfully practised by this system for many years, and verysuitable implements are provided for that purpose. [a) Mole Draining Machines.—Mole ploughs (Fig. 11) areused to form channels in the subsoil to drain the land. Themachine forms a duct with smooth sides (similar to a moletrack) into which the surface water drains and is carriedaway to the main drain. Stiff, clay soils are best suited to thismethod of drainage, since there is less hkehhood of the soilfining the channels and blocking the water than in the case ofloose soil. Land lying on a fair inchne gives better resultsthan fiat land, as the rapid flow of the water tends to keep the io86 Faem Drainage Machinery. [FEB, channel open. The plough consists of a steel cone carried ona coulter attached to a stout beam. The frame of the machineis mounted on two large hind wheels and one or two smallerwheels in front. Means are provided for regulating the depthof the bore to a maximum of 3 Fig. II.—Fowler Double-frame Mole Draining Machine, fitted withHand Lifting Gear. {b) Trench or Ditching Machines.—Fig. 12 shows an exampleof a Fowler implement of a type little used in this is designed for opening trench or irrigation ditches. Thefront of the frame is provided with a rope sheave round whicha rope from one of the ploughing engines passes, the otherend of the rope being fixed to the hind wheel of the same front coulter splits the mass of earth to be removed intotwo halves, which are conveyed upwards by suitable mould-boards and deposited on both sides of the finished ditch. Themachine is manufactured in several sizes, making trenches upto 2 ft. in depth and 3 ft. in width. 4. Scraper Excavators with Dragr Lines.—These machines aredesigned for open ditching work and are specially useful indigging by lateral excavation ditches not exceeding 16 the top. By substituting additional booms the
Size: 2467px × 1013px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
