524 Description of a New Tnrashing Miil. 
two became absolutely necessary for the continuance of my 
occupations. TI accordingly erected one of the kind recom- 
mended to me; but from the complication of its structure, 
its being frequently out of order, and from its bad per- 
formance of the work at all times, I resolved to try to have 
a thrashing machine made under my own directions, more 
simple in its construction, and more efficacious in its ope- 
' rations. With this view I have continued my experiments 
for nearly three years, at an expense of about three hundred 
pounds, and have, at last, brought my machine to a degree 
of perfection which is satisfactory. Many gentlemen and 
farmers who have seen it and its operations, give it a de-— 
cided preference to any they have scen; for the simplicity 
of its construction, for the cleanness of its thrashing, and 
for the quantity of corn thrashed by it, in proportion to 
the power applied. 
T have no doubt but that the result of my original thoughts 
and experiments on this subject, will be of great ad- 
vantage in this highly useful agricultural implement, and I 
have sent a model of the machine for the Society’s in- 
spection, : 
Iam, sir, 
Your very obedient servant, 
Maidenhead Thicket, Dec. 27, 1809. H. P. Lee. 
To C, Taylor, M.D. Sec. : 
~-- 
. Reference to the Engraving of Mr. Lee's. Thrashing 
Machine, Pi. VN, Fig... and 2. 
Fig. 1 and @ are a side and end-view of the machine; A, 
in both figures, represents the framing of the machme; B 
is the shaft of a cog-wheel C, which is turned by cog~ 
wheels, from the great horse-wheel, in the same manner as 
the ordinary thrashing mill; the cog-wheel C turns a smal! 
pinion D, to which it gives a rapid revolution ; on the axis 
of the pinion the beaters EE are fixed, and revolve with it, 
within a segment or drum, formed of iron plates, grooved 
or ribbed, parallel to the axis, as the figure represents, and 
connected together by wooden curbs FF, to which they are 
screwed. aa@ is the feeding board upon which the corn 
is placed to enter the machine. The end of this board is 
fixed very near to the four vanes, or beaters, JO1); as these 
revolve rapidly they strike the heads of the corn upwards, 
with such a jerk as to beat out all the corn from those ears 
which they meet fairly; but if any escape they are drawn 
in, together with the straw, and rubbed round by the beaters 
. against 
