610 IMPROVEMENT OF

through into the feed-flues, as in the machine before defcribed but in this there is no revolving axis, but a wooden or iron bar BB,

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_ 3. Plate XIL about two inches broad, and about four feet eigh inches long, and exaétly three eighths of an inch thick. T L

this bar there are fix perforations, eee,&c. which are each of them 1

exa@ly one inch long, and half an inch wide; and three eighths of

an inch deep, which is the thicknefs of the bar.‘The centres of thefe holes are exa@ly eight inches diftant from each other, corre-

4° di fpondent to the holes at the bottom of the feed-box; over which it

is made to flide backward and forwards in agroove. By this fliding.

motion it pafles under ff brufhes, whichare placed over it on each end of the holes at the bottom of the fecd-box, and ftrickle off the grain, as the holes in the fliding-bar pafs under them, which thus meafure out the quantity with confderable accuracy.

In order to increafe or diminifh the quantity of grain delivered, the flider is covered with a cafe of tin CC, fig. 4, Plate XII. which

has fix perforation s exactly correfponding with the holes in the:flider;:

but inftead of the bit of tin being cut out the whole length of the Tes

hole, part of it is left at the end;, fig. 6, equal to the taicknefs of the pige aud is bent down as at 4, after the flider is put into the

cafe, like the tin cylinder in the ne dis machine. This cafe 1s P 8

hsresble about one inch backward and forward by turning the finger {crew s, fig. 4 and 5; and thus the holes are made larger or-lefs to

fuit various forts of grain, or different es of the fame fort, ex-.

aétly as im the wooden and tin cylinders irmPlate XL‘Lhe flider is

moved forwards by a bent iron pin À attached to it, which pales:

into a ferpentine groove Y, fig. 5, fixed to the nave of the wheel: and backwards by a fteel fpring at the other end of the feed-box,

which is not reprefented i in the plate

Fig. g is a bird’s eye view of the GS before defcribed: E E the feed-box divided into cells by the partitions dd,&e.—c c c the flider, o| with

a ra

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