the Philadelphia Centennial Exhibition. 
37 
fastened to the iron rod on which the conveyor travels. When the load 
is raised by the draft of the pulley-horse, the top of the pulley-frarne C 
comes against and raises the stirrup N, liberating the adjustable lock 00, 
which now holds the rope G in its position until it is conveyed to any 
desired position. The load is liberated by pulling the trip-cord, one end of 
which is shown at P. I saw the apparatus at work, and was quito satisfied 
with the results. Messrs. A. J. Nellis and Co., Pittsburgh, Pa., are the makers 
of the double-winged fork just described. This firm does not manufacture 
a conveyor, but the load is moved along a rope by simple pulley and leverage. 
They have invented grapples which can be attached to the roof of a barn, 
affixed without climbing, and as easily removed. In order to make use of 
the grapple, all that is necessary is to attach the holder to the end of a pole 
the length required to reach the point at which it is to be fixed, and 
attach the pulley to the hook. It is now raised to the required place in such 
a way that the end of the fork and the prongs of the holder rest against the 
centre rafter (joist or beam), held firmly with one hand, the rope being held 
with the other, and receiving a stout, quick, outward swing, which causes the 
grapple to swing from the socket, and the points cleave firmly to the desired 
place. 
One of the most practical of these useful inventions was 
shown by a Canadian, Peter Grant, of Clinton, Ohio, the Excel- 
sior Hay-fork and Conveyor. The latter is very simple. The 
friction-wheels travel on an ordinary scantling, 3" X 4", with 
simple supporting hooks in the centre. The fork has three- 
tines, the centre one being provided with the double harpoon. 
The barbs rest on the shoulders of the standard, which gives 
great strength. The conveyor-frame has friction-wheels both 
above and below the rail. 
Planting Machinery. 
Grain Drills — though entirely confined to the American 
Section — were numerously represented, and, as will be seen 
when I enter into details, many possessed great merit. No 
field trials were arranged, and the Judges organised a series of 
tests in the buildings, which enabled them to judge of compara- 
tive merit, and gave great satisfaction to the exhibitors them- 
selves, who had not before been subjected to so searching an 
inquiry. I may state that the idea of these trials was sug- 
gested by tests applied by the Royal Agricultural Society's 
Judges at the Bedford trials in 1874 ; when, after the ordinary 
trial, " small bags were hung on the upper seed-tin of each 
coulter, and after the run their contents were carefully weighed." 
But whereas the Bedford trials were on the level only, those at 
Philadelphia included five different positions — viz., on the level, 
with the right-hand side of the drill elevated at an angle of one 
in thirty, left-hand similarly raised, and in two other positions, 
representing going down and up steep inclines. And all this 
was done without moving the machine from its stand in the 
Hall. The wheel, raised clear of the ground, was made to re- 
