426 Report on the Trials of Implements at Cardiff. 
Coulson's spring-liangers, the vibrating shoes are suspended on Trooden hangers 
of an extra breadth, the object being to prevent lateral ])lay and obviate the 
necessity of the parallel guides used in most other macbiiies. The Nalder 
Patent Adjustable Corn-scieen, used in this and in two other machines in this 
class, diti'ers from most adjustable screens in having the wires fixed. The 
meshes are made fine at the feed-end, and gradually enlarged to the outlet-end ; 
■what passes throusih the first division of the screen will always be the smallest 
or third corn. The size of the corn falling through the screen will increase 
throughout the length of the cylinder. The adjustable part consists simply of 
a sliding double hopper beneath the screen, which is shifted at pleasure, to 
direct more or less of the corn that has passed through the intermediate-sized 
meshes into the spouts for heads and for siconds corn. The wires are of steel, 
and, being riveted in position, are made smaller than the shifting-wires used 
in other adjustable screens ; a greater number of screening spaces are thus 
obtained in the same length of screen. The travelling wheels of iron have their 
felloes liiihtened by being fiierced with oval holes. In the trial no blocks were 
used under the wheels, but the machine was kept steady by locking the hind 
■wheels by means of a bolt passed through one of the holes in the felloes. The 
surface of the caving-riddle is grooved across the direction in which the cavings 
pass. 
4992. Tasker and Sons. — Three belts on the left, two of them from the 
drum-shaft; four belts on the right side, three of them, from the drum-shaft, all 
drawing forwards. Such an arrangement of belts will naturally result in hot 
bearings, as recorded in the trial. A peculiarity in this machine is the use of 
two corn-elevators, one on each side of the main frame, and only one set of fans. 
The first elevator delivers the corn in the usual way into the bummcUer ; it then 
passes by a shoot down throitgh the ciutre of the shog-board into a scd'ud 
winnowinu-box, fixed upon the under side of the shog-board ; here it receives 
a forward blast from the same I'ans that luade the first separation of chaff fmm 
corn. An objection to this arrangement is, that it sends any unshellcd white 
coats that may have passed through the httnimeller in among the straw. 
After the second winnowing the corn is raised by the second elevator to the 
rotary-screen, and is thence delivered into sacks. There docs not seem to be 
much advautaic in thus substituting a second elevator for a second fan. 'J'he 
shakers are carried at their outer ends on a crank-shaft, and at their inner ends 
on a rockini-bar. The Iranie is good and well trussed with A sha] ed iron. 
An iron bracket afford-^ an outer bearing to the drum-shaft beyond the di iving- 
rigtier. The chaft was delivered into bags. 
The dressing by this machine was not well done, as many seeds ■sverc blown 
into the straw ; and from column 24 we see that 20 lbs. of good corn were lelt in 
the spoulings or cupes. 
The caving-riddle is grooved longitudinallj', with plain holes sunk in the 
grooves. 
4897. Turford and Sons. — Four belts on the left : only one is taken from the 
drum-shaft, and is placed opposite to the engine-belt ; four belts on t>he right, three 
of theiu from the drum-shaft. 'J'he resultant of these pressures would be in tiie 
direction of A, Fig. 10, and would counteract the pressure 
Fig. 10. of the sheat-corn upon the drum. The chaff is not 
bagged, but delivered on the ground under the machine. 
A single Ian is used, with a diviiied blast. The caving- 
riddle is diiuble, each jiart having eccentric counter- 
sinking to the perforations. 'I he diameter of the Imles 
is t inch in the upper and h i"ch in the lower riddle. 
The holes in the lower riddle proved too small in the 
trial, and much chafif passed over with the cavings. The white-coater is 
conical. ^ 
