io86 



Faem Drainage Machinery. 



[FEB, 



channel open. The plough consists of a steel cone carried on 

 a coulter attached to a stout beam. The frame of the machine 

 is mounted on two large hind wheels and one or two smaller 

 wheels in front. Means are provided for regulating the depth 

 of the bore to a maximum of 3 ft. 



Fig. II. — Fowler Double -frame Mole Draining Machine, fitted with 

 Hand Lifting Gear. 



{b) Trench or Ditching Machines. — Fig. 12 shows an example 

 of a Fowler implement of a type little used in this country. 

 It is designed for opening trench or irrigation ditches. The 

 front of the frame is provided with a rope sheave round which 

 a rope from one of the ploughing engines passes, the other 

 end of the rope being fixed to the hind wheel of the same engine. 

 The front coulter splits the mass of earth to be removed into 

 two halves, which are conveyed upwards by suitable mould- 

 boards and deposited on both sides of the finished ditch. The 

 machine is manufactured in several sizes, making trenches up 

 to 2 ft. in depth and 3 ft. in width. 



4. Scraper Excavators with Dragr Lines. — These machines are 

 designed for open ditching work and are specially useful in 

 digging by lateral excavation ditches not exceeding 16 ft. 

 over the top. By substituting additional booms the machines 

 can be converted to do four different kinds of work : — • 



{a) Drag line work. 



{b) Digging and steam shovel work. 



(c) Grab work with slush. 



{d) Grading work. 

 The power unit of these machines may be either internal 

 combustion or steam. The class of work undertaken by these 



