Report on the Trials of Implements at Cardiff. 
449 
intended to do the double work of straw-elevators and stackers. The machine 
that is intended to do one thing only (like the man who confines his energy 
to one object) is generally the most lonnidable competitor in its own line. 
The engraving represents the machine as lowered lor travelling. It is raised 
for work by means of two pinions, moved bj' a winch-handle, on the further 
side of the upper part of the carriage-frame ; these pinions work into the two 
cast-iron racks placed above the fore-wheels. Two additional lengths of racks 
are placed ready for use in the centre of the frame. In the lower part of the 
bottom of the trough an open gi-ating, four feet long, is placed so that any stray 
corns not extracted by the shakers of the threshing-machine, but separated 
from the straw in the process of elevating, may fall through and be subse- 
quently collected. A similar grating is provided in the troughs of nearly all 
straw-elevators. The carriage-wheels are provided with patent axles, and the 
machine shows excellent workmanship in all its parts. The weakest point in 
its design is the use of the long cast-iron racks, which in frosty weather are 
apt to break if jarred in working. 
No. 5027. Marshall, Sons, and Co. — This also is a very well made machine 
on Hayes's pattern, differing from the one last described chiefly in the arrange- 
ment for raising the trough. Two wrought-iron rods are hinged upon the 
fore part of the carriage-frame, these terminate in friction rollers, which run 
freely along metal grooves on the under sides of the trough ; chains are carried 
from the upper extremities of these rods to a winch worked by the handle 
shown in front of the hind carriage-wheels ; by turning this handle the chains 
are shortened and the trough is raised to the height desired. The only objec- 
tion to this arrangement is that the chains at first starting work at a very 
acute angle to the rods, hence much of the power employed in raising is 
wasted, and there must be a considerable strain upon the winch. Three ribs 
are raised on the floor of the straw-hopper, and these serve to hold the straw up 
loosely, to be carried away by the iron teeth of the ladder which passes between 
these ribs. The whole of the framing is of oak ; the wheels of the machine 
tried were of wood, 3 feet 4 inches in diameter, with patent axles. The 
sides of the octagonal pulleys and the links of the ladder chain are each 
8 inches long. The spindles are covered with sheet-iron to prevent straws 
from wrapping round them. The machine is only suited for straw elevating, 
and can be worked at any angle. The workmanship is very good, and the 
construction very substantial. 
Fig. 21. — Messrs. Marshall, Sons, and Go's Straw Elevator, No. 5027. 
(Hayes's Patent.) \^ 
V6l,. VIII. — s. S. 
2 G 
