448 Report on the Trials of Implements at Cardiff. 
besides those that have been enumerated, is in the method adopted 
for raising and lowering the trough. 
Fig. 20. 
-3Iessrs. Clayton and Sliuttlewortlis Improved Straw Elevator, 
No. 4945 (^Hayes's Patent), ' lowered for travelling. 
No. 4945. Clayton and Shuttleworth. — This is a very well constructed 
macliine of Hayes's Patent, with no very important alteration of the original and 
well-known pattern, except that it is arranged to deliver at any angle, without 
requiring manual assistance to turn the straw into the hopper, which is now 
made round instead of square. This arrangement is introduced into many 
straw-elevators, and is of great importance, as an elevator that can deliver only 
in a straight line from the threshing-machine is often useless in the rick-yard. 
An open trussed wooden carriage-frame on four wrought-iron wheels carries 
the long wooden trough up which the straw is pushed, rather than carried, 
by long iron teeth fixed upon the wooden cross bars of the endless chain or 
flexible ladder. The lower end of the trough is suspended upon a shaft carried 
by plummer-blocks upon the carriage-frame, and made to revolve by means 
of a short belt from the shaft, which is driven from the threshing-macliine. 
Upon the shaft and within the trough are keyed two octagonal iron pulleys 
having their sides of the same length as the iron links, which form the sides 
of the flexible ladder. Two similar octagonal iron pulleys carry the upper 
end of the ladder, which is also supported in the middle by two friction 
rollers. 
The upper side of the revolving ladder descends in working, and is seen in 
Fig. 20 ; the lower and unseen side catches the straw in the hopper, and 
holds it down against the bottom of the trough while pushing it up to the 
stack. The under sides of the ladder are supported on three friction rollers 
set on each side of the trough. This mode of carrying tlie straw under, 
instead of wpon, the teeth of the ladder is peculiar to the three machines which 
liave the trough of a fixed length ; in carrying straw it has the great advan- 
tage of securing it from being blown about by the wind, but it disqualifies 
these machines for use in stacking sheaf corn. The other machines are all 
