Report on the Trials of Implements at Bedford. 737 



Weiglilridge for Carts and Waggons. — In this weijjliLridgc, by reducing the 

 number of working centres and connections, friction is reduced, and thus 

 the machine is rendered more sensitive and unvarying in its indications. No 

 relieving apparatus is used ; thus an invariable uniform bearing is secured for 

 the working parts, more accurate operations obtained, and chafing as well as 

 wear, to a great extent obviated. All the working parts are suspended from 

 the corners of the coping, and float freely with every movement of the plat- 

 form ; thus there is no risk of sticking or binding. By other improvements, 

 latei'al friction and consequent wear of the edge centres, which take place when 

 loads are driven on to the platform, are reduced. 



The platform is constructed of timber ; the advantages of which over an 

 iron one are, saving in prime cost, as well as facility of repair. 



As an experiment, the three Judges and the Consulting Engineer were 

 weighed on one of the 12-cwt. machines of similar make, first collectively, and 

 then singly, the difference between the former weight and the sum of the latter 

 being only \ lb. Price 38/. 



3174. ir. R. Dell and Son, of Mark Lane, London. — Duplex Grain Soi-fer, 

 for sejxtrating Roimd Seeds from Wheat. — The corn is placed in a hojjper pro- 

 vided with a shutter for regulating the feed ; it is delivered on to the lower 

 part of an inclined revolving cylinder, which is made of sheet iron, with in- 



Fig. 48. — Messrs. W. B. Dell and Son's Duplex Grain Sorter, for 

 ^ separating Bound Seeds from Wlieat, No. 3174. 



Sfcction of inil'jntcd Zinc riato. 



dented zinc plates fixed to its inner circumference. Suspended in the cylinder 

 is a semicircular wrought-iron trough, wilh a winged edge pressing upon the 

 zinc plates. The round seeds find their way into the small round indenta- 

 tions of the plates, as shown in section, and are thus carried round, in order 

 to drop into the suspended trough. A hammer strikes the cylinder on the 

 top, about its middle at short intervals, in order to shake out the round 

 seeds. The machine is worked by a crank-handle at the side, motion being 

 given to the cylinder by a cog and bevel gearing, and a strap j^assing round the 

 outer circumference of the cylinder and over a pulley fixed to the driving 

 VOL. X. — S. F'. 3 B 



