148 On the Pariſp or Family Mill,*[March

E, the receptacle for the flour, into which it falls from the mi!l-ſtones when ground.

The bed-ſtone D reſt upon two ſupporters: of wood, one‘of which is-ſhewn at I: theſe ſupporters are ſcrewed to the block E, and-alſo mortiſed-intó the lower frame-work of the mill at R: the frame-work is held together by pins or wedges LLL, which admit the MH to be ecañly taken to pieces.

M, 2 fliy-wheel placed at the furtheſt extremity of the axis C. On ths fly-wheel another handle may be fixed occañonally.

N, a ſmall rail which preſerves the hopper in its placez the furtheſt part of the hopper refts on a ſmall pin, which admits ſufficient motion for the hopper to ſhake forward the corn.

O, a ſpur-rail, to frengthen the frame-work of the Mill.

P, the front upright, which is mortiſed into the frame-work of the Mill; this is a reſt for that end of the iron axis C which is next the handle.‘Lhere is 2 ſhoulder on each of the axis, to keèp it ſteady in its place.

N. B.A ctloth-hood hxed to a broad wood hoop, is placed over the ſtones whilf at work, to prevent the fine particles of flour-from Aying-of. i

Account of Mr. RusTALL’s BorLTER.

A Bolter or fifter to ſeparate the flour from the bran, being neceſſary to uſe along with the Mill'above deſcribed, Mr. Ruſtall furniſhed the Society with one made upon a very uſeful and ſimple conftru@ion, which is alſo placed-for inſpedion in their repolitory.‘This machine is applicable to other purpoſés; and as its:being generally known may prevent many inconveniences which attend the‘Tevigation of noxious articles, and a waſté of their finer particles, an engraving and‘deſcription of this Bolter

‘1s annexed: för the beneht ofthe Public.

Fig. 2. repreſents the bolter, the front of which is removed, to ſhow its interior conſtruction; its Tength is 3 fet 10 inches, its breadth 192 inches, its depth 18 inches.

A, is a moveablé‘partition, which ſlides above four inches backwards from the centre of the box, upon two ribs of wbod, fixed to: the:back‘and front of the box, one of‘which ribs is ſhowmat B. i Lin je:

€, ¿the lid ofthe bolter repreſénted-open-

D, a ſlider moveable in a groove in the lid.by two handles on the back of the- lid.:

E, a forked iron fixed in the ſlider D: this förk, when the lid 1s ſhut, takes hold of! the edge of the ſieve F, and moves it back- wards and forwards on the ribs“ of wood B, as the ſlider is agitated.-

G5 a fixed païtition in the lower part of the centre of the box, to ſeparate’it into two equal párts, in order to divide thé fine and coarſe flour; the ſlider A moves about four inches each way from this: partition, and thereby gives‘room ſor the ſieve F to'be-worked!: BAY: