746 
Report on Implements at Preston. 
planed, and the wearing faces, c* and c^, of this are fitted in the same 
manner as the others. By an ingenious contrivance, a positive drawback- 
motion, T, is imparted to the swing jaw, which takes no power to work, and 
which entirely dispenses with the old steel-embedded, india-rubber spring. 
This one advantage can hardly be over-estimated, as the full power of the 
engine is employed in the reduction of the material. The frictional parts in 
this machine are greatly reduced, especially the main or crank shaft, f, which 
has been lessened one inch in diameter in a medium machine. The adapta- 
tion of the parts is such as greatly to relieve the strain upon the machine, 
and the leverage gained has reduced the power required to drive by about 
one-half. The whole of the shafts and axles are made of best hammered 
steel. The bearings are pillowed throughout with brass bushes, accurately 
bored. The toggle cushions, u and v, are all of solid crucible cast-steel. 
One of the greatest advantages claimed for this machine is, that by altering 
the position of the teeth of the front toggle, J, up or down, upon the cushion 
V of the lever, the motion or length of stroke of the jaw can be increased or 
decreased, and the size of the product regulated in this manner. The motion, 
obtained by the use of the peculiarly formed toothed toggle and lever-cushion, 
gives an interrupted motion to the jaw to suit any kind of material ; this also 
prevents clogging. For a certain position of the revolution of tlie fiy- wheel, 
p, the jaw is stationary : the result is a sudden blow by the jaw upon the 
material, exactly similar to that of a man hitting the stone with a hand 
hammer. The result, it is claimed, is a much better sample of road metal 
than it is possible to get by any other machine, and less waste in chippings. 
The size of its mouth determines the size of the material each machine will 
take in. The No. 4545 machine measures 15 by 8 inches. A smaller 
machine. No. 4546, measures 8 by 6 inches at the mouth, and is provided with 
driving gear for working it by hand power. 
Mr. Henry Yorath exhibited a new Clip-fork Elevator, No. 
5228, which is an improvement upon the implement that was 
exhibited by Mr. W. T. Wright in 1872 at Cardiff', and described 
in the Report of that Show. 
A rick pole, held by three guy ropes, carries a boom that can 
be ad justed to any height ; upon the boom are two pulleys ; 
the clip fork is suspended by a rope passing over these pulleys, 
round a snatch-block at the foot of the pole, and then attached 
to the horse. The fork is double, formed of two curved three- 
pronged forks turned towards each other, and fastened by a 
stud like a pair of scissors. The extremities of the handles are 
attached to two links, and these again are attached at their 
upper ends to a ring through which the elevating rope passes to 
the centre of the clip. As soon as the fork is thrust into the 
hay by the man on the cart, the pitch is raised by the horse, 
and the boom swings round the pole and over the stack. The 
old fork was emptied by the ring through which the rope passes 
striking a tappet at the end of the boom. The sudden jar that 
occurred when the rope was thus suddenly stopped was then 
stated to be very objectionable. This objection has now been 
removed by adding three small pulleys to the upper frame 
of the clip forks, and passing through them a check cord in such 
