G22 Bcport on the Trials of Combined Stacking-Machines 
pinion, on Hayes's principle, but to prevent these cast-iron racks from being 
brolten by a lateral strain from the action of wind, or from a sudden jar when 
movini; with the trough raised for work, two trussed oblique wooden shafts 
prevent the trough from swaying on either side. 
In opening the trougli the upper part is disengaged from the carriage-frame, 
to whicli it is fastened when travelling ; the trough is then partially raised by 
the rack and pinion ; the upper part is then raised by a prop, which supports 
it at the farthest extremity ; the main ^jart of the trough is then lowered on 
the rack, till the joint between the two parts closes, and is kept fast by a self- 
acting hook-and-eye; three light iron rods form a truss to each side of the trough. 
Since the Cardiff Meeting, the rake-heads, teeth, and chains of this machine 
have been strengtlieued, and their mode of attachment improved ; the teeth 
are now fastened by nuts instead of rivets, so that if one is accidentally bent, 
it can be taken out, straightened, and replaced in a few minutes. The back 
of the hopper can now be adjusted, so that its slope can be regulated to suit 
the inclination of the trough. The substitution of a round for the square 
shaped hopper would improve this machine, and enable it to take straw from 
a thrashing-machine at any angle. 
A wooden hood is used in delivering hay and straw against a head-wind. 
In delivering sheaf-corn, a light hanging platform of long wooden laths was 
suspended imder the top of the trough ; the laths being free at their outer 
extremities, and placed with a forward dip, the sheaves as they fall upon 
them are lightly thrown forward, and are thus delivered well into the middle 
of the rick. The workmanship of this machine is good, the carriage-frame 
is of white deal, the oblique shafts are of oak. 
No. 5527. T. Bohson. This machine, although it failed in the trial with 
sheaf-corn, is much better in design than in execution. It contains some 
original contrivances, that show much ingenuity in the exhibitor, but he has 
apparently been unable to put his inventions in such a practical form as he 
might have done if he had command of a larger factory. 
A new idea, though roughly worked out, is often of great public value, and 
for this reason its exhibition even in a crude form is to be commended. It 
will not, however, much benefit the exhibitor, except as a proof of ability that 
might otherwise be j assed over wii;hout meeting with the encouragement it 
and carries at one extremity a pulley to receive the belt from a threshing- 
machine, and at the other end terminates in a bevel-wheel, that drives the 
Fig. 7. 
deserves. The top of the trough 
is made to fold under ; it is 
opened out for work in a manner 
very similar to that described 
in the last machine, but is 
raised by an original contri- 
vance of sliding rods, sketched 
in Fig. 7. A rope passes over a 
pulley at the top of the lower 
rod, then down a groove be- 
tween two rods, and is fastened 
to the bottom of the upjjer 
rod ; when this rope is wound 
up the upper pole slides up, 
and so raises the trough. 
Another device peculiar to this 
machine is a semicircular metal 
bearing at the back of the hop- 
per, which sup])orts a shaft 
that can be jilaced at any angle. 
