Report on the Trials of Implements at Bedford. 037 



Coultas ; 2ntl, Holmes and Son ; 3rd, W. Walker and Son ; and 

 4th, A. W. Gower and Son, of Winchfleld. 



In the way of novelties may be mentioned Holling-s Brothers' 

 Canadian drill, in which the seed is delivered by falling upon 

 the delivering-wheel through an opening- in the top of the box 

 in which the wheel is placed, being carried half round to an 

 opening in the side of the box, from which it falls ; but the 

 regularity of its seed-deposit was not good. None of the modes 

 of delivery, excepting that of the ordinary cup-arrangement, 

 could deliver the seed in any way approaching to regularity. 



No. 2792. James Coultas, of Grantham. — The seed is placed in an upper 

 seed-box provided with a water-tight lid, and passes from it into a bolstered 

 lower seed-box. The flow is regulated by slides acted on by a rack-and- 

 pinion arrangement, and the seed is delivered by cups into hoppers, and 

 through india-rubber seed-pipes to the coulters, as already described in 

 No. 2970 in the previous class. The box is levelled on hill-sides by a crank- 

 handle behind, which is connected with a rack and pinion before. 



The coulter-levers are arranged on two stav-bars, thus giving equal leverage 

 and plenty of room between the coulters. This is a good arrangement, as it 

 not only gives greater strength, but also greater freedom of action. 



The presser-bar has a lock -joint at its centre, as previously described, and 

 is acted on by two flat spiral springs. These, as will be seen by the accom- 

 panying engraving, consist of a flat steel spring, a, w'hicli is bolted to the 



rig. 3. — Coidtas's Patent Flat and Spiral Spring Press-Bar, No. 2792. 



fastening, b ; this latter being pivoted with a pin to the coulter-lever, c, at 

 about its centre. The flat spring is fastened to a vertical rod, d, at e, this 

 being connected with a spiral spring placed in a brass tube, F. This brass tube 

 fits into a lower brass tube, G, which latter may be screwed up or down upon 

 the former, to adjust the pressure, and is pivoted to the end of the lever with a 

 pin. The press-bar is placed above the press-bar-lever, and is connected with 

 it by a screw-bolt, H. The springs are pressed by means of a cross-bar, which 

 is fastened to the ends of the one set of arms of a hand leverage, this being 

 also employed for raising the coulters off the ground — the coulter-levers are 

 attached by chains to this cross-bar. The seed-box is thrown out of gear 

 on both sides by this same leverage, for its levers are also connected by chains 

 to it, being fastened to small projecting arms on the ends of its spindle. 



