in the space inside the main frame, and the top, or cover, allowed to drop down upon the 
frame itself, thus making a compact and safe machine for transportation, while it is simple 
of adjustment for any person of ordinary capacity. 
§ a 20. The grain as it is threshed, is discharged by two spouts, one for the cleaned grain, 
and one for the tailings and partially cleaned grain—and, when ordered, an elevator for re¬ 
turning the tailings back to the riddles. &c., is attached, and for many kinds of grain is 
found a great labor-saving attachment, and requires also but a slight force to keep it in 
motion. 
§ a21. Price of these Improved Machines, with a two-horse power and bands $250 00 
Price of the Two-Horse Power Endless Chain. 120 00 
Price of Threshing Machine and Cleaner combined,. 130 00 
Price of set of Bands and Extras, (nett)... 5 00 
Price of Elevator for tailings (always an extra charge),. 10 00 
§ a 22. All their Threshing Machines for two horses have the cylinders 14 inches diameter 
and 26 inches long; and for one horse 12 inches diameter and 26 inches long; where six or 
eight horses or steam and water power are used they are made 30 inches long and 14 inches 
diameter, and are Constructed as follows : 
§ a23. These Cylinders are all built upon a heavy cast steel shaft with solid cast iron plate 
heads, with hard maple wood staves, nearly three inches thick, forming the shell. These 
are turned off and enclosed with a substantial sheet iron covering, making it air tight and 
impervious to the atmosphere and moisture. The teeth, about sixty in number, are made of 
extra refined iron, with a sharp open screw cut on one end, nearly half their length, and are 
turned into holes in the cylinder, cutting their own screw thread in the wood, by which 
method they are confined more permanently, without any strain or torsion, than is the case 
When they are confined by smews and nuts inside, or by riveting, thereby removing all lia¬ 
bility, of "breaking and injury to operators or machines while in use. 
The cylinders should be adjusted endways so as to prevent chafing against the frame, and 
with as little endways play on its journals as possible, and at the same time avoid friction 
and pinching against the boxes in which they run ; these boxes when so adjusted to be 
firmly screwed to the frame. The teeth of the Cylinder should pass in the center of the 
spaces between the teeth of the Concave. 
§ a24. The Concave is of solid hard maple wood, containing about the same number of 
teeth. It is placed over the cylinder and so attached as to be adjustable in all ways. 
It may be moved.endways, if necessary, by simply loosening the two bolts which confine 
it to its iron end plates, by means of the slotted bolt holes in them. These plates at each 
end of the Concave extend down outside the frame, and are held in position by means of the 
open slots and bolts, which are also designed to facilitate the adjustment of the Concave to 
any desired position requisite to perform in different kinds and conditions of grain ; by loos¬ 
ening these bolts at the side, the Concave may be raised at .pleasure, for increasing its ca¬ 
pacity for work, and also permitting either edge of the Concave to be raised or lowered more 
than the other, as for threshing tough and shrunk or damp grain, the edge furthest from the 
feeder should be lower than the edge nearest to him, which position causes the teeth of the 
Concave to present a more retaining angle, and consequently a longer hold upon the straw, 
enabling the teeth of the Cylinder to make perfectly clean work, while by lowering the edge 
nearest to the feeder more than the other, an opposite effect is produced, and which often, 
in dry easy threshing grain, nearly doubles the amount of work done per day. In adjust¬ 
ing this Concave the greatest care should be taken in order to cause it to hold on the straw 
sufficiently to do clean work, and nothing more, and it should be held firmly in position by 
the bolts at the side, at all times when in use. 
§ a25. The feeding table is level and a little above the center of the cylinder, and the grain 
is fed in over the cylinder, thereby preventing any fiard or injurious substance getting into 
the machine to endanger the teeth or the operators. 
This Overshot construction, as it is called, has the advantage of delivering the straw: and 
grain closely up to the machine, and at a sufficient elevation from the floor to admit of any 
variety of attachment for separating the straw from the grain, or attaching a cleaner, &c. 
The driving pulley of the cylinder is fitted with a ratchet and hub coupling, which drives 
the cylinder in threshing and admits fhe pulley to stand still any moment when the horse 
power is stopped, the cylinder and its shaft running freely inside the pulley until its momen¬ 
tum lias become expended, thus avoiding any stress upon, or flying off of the belts, or 
injury to the gearing of the power, and admitting of an easy and instantaneous stopping of 
the power by the brake. This is a valuable improvement over the old manner of confiuing 
the pulleys fast upon the cylinder shaft by set screws or keys. 
The frame works are all made of the best ash and other hard wood. They are put 
together with joint bolts, and have base or sill timber into which the posts are framed and 
bolted, and the joints can at all times be kept tight in any climate or temperature. 
C APACiTYj &c. 
f a27. The Two-Horse Power together with this Thresher and Cleaner combined, and with 
two horses weighing one thousand pounds each , and four men to attend them, will thresh, 
on an average through the threshing season, at the rate of fifteen to twenty bushels of Wheat 
or Rye per hour, and ten to twelve hours per day, of ordinary yield and quality. In extra¬ 
ordinary poor or great yield, or heavier or lighter horses, greater or smaller results will be 
realized: of Oats, Buckwheat, Barley, &c., nearly double the amount may be threshed. 
