Report on the Trials of Implements at Bedford. 639 



over clods, the wheels can accommodate themselves to them, without trans- 

 mitting tlie shock to the man who guides the drill. The price is 28^. 



Fig. 4. — Messrs. A. W. Goioer and Son's Imp-oved Fore-carriage Drill 

 Steerage, No. 2847. 



4412. B. Eeid and Co., of Aberdeen. — This was the disc delirery-drill, the 

 principle of which will be found described in the report on tlie Cardiff Miscel- 

 laneous Class. The form and arrangement of the coulter-levers are specially- 

 worthy of notice. Fig. 5 (p. 640) is a side elevation, with cross section of the 

 lever-stay bar, and Fig. 6 the plan. These modes of attachment not only 

 give great strength, simplicity, and stiffness to lateral strain, but the pressure 

 put on the coulters is easily varied by shifting the weights, f, on the lever, 

 and fixing them in the desired position by the plate h, which is pivotted on 

 the pin j. This device prevents the weights jumping when travelling over 

 uneven ground, while all the advantages of the coulters rising and faUing to 

 suit unlevel land are fully maintained. It will also be seen by referring to 

 the engraving, that upon a square ^\TOUght-iron bar, a, running the breadth 

 of the machine, the levers, b, are attached by straps, c, and secured by 

 cotters, D. In altering the distances between the coulters, all that is 

 required is to ease the cotters, when the straps with the levers can be shifted 

 on the bar a, and the distances between the rows accurately adjusted ; the 

 lever with its coulters being again secured in position bj' the aid of the straps 

 and cotters. The lever will bear great lateral strain, being well stayed on the 

 sides. 



