BARLEY MILL, the name of a machine for ta king the husks from barley.
A barley mill of the most improved construction • is represented in Figure 1. of Plate LIII. The' water wheel A is eighteen feet six inches diameter and carries fifty buckets, each of which is three feet three inches wide. On the water shaft B, that car ries the water wheel, is fixed the spur wheel C, which' is eighteen feet diameter, reckoning from the pitch stroke, and has 340 teeth. The spur wheel C im pels the pinion D of thirty-two teeth and one foot 8.4 inches diameter, fixed upon one extremity of the shaft E, while the other extremity carries the wheel' F of 150 cogs and seven feet 11.45 inches diameter to the pitch stroke. The wheel F drives the pinion G, fixed on the stone spindle H, and having a dia meter of four feet six inches. The spindle H carries the millstone I, which is four feet six inches in diame ter, and one foot five inches thick, and which per forms 280 revolutions in a minute.
The wheel K, of fifty teeth and two feet diameter, iinpels the wheel L of the ',Arne number of teeth and diameter, which is fixed apc.n the spindle R. On the spindle It is a conical place, upon which the pinion M of twenty-five teeth and one foot diameter, is fixed by means of a brass bush fitted into the centre' of the pinion, and then bored exactly to fit the cone in the spindle It. Below the base of the cone is a brass ring 3, to keep the pinion • M firm upon the cone, by means of four screw-bolts, which bring the pinion firmer to the base of the cone. On the other side of the pinion are two projections 1, I, commonly called mugs, which take into similar projections on the end of the catch 2, 5. This catch slides along the spindle R by moving the lever N, but goes round with the spindle by means of two tongues fixed on the opposite sides of the spindle, one of which is partly visible at 4 in the Figure. Two grooves are
cut on the inside of the catch, to admit the tongues, in order to carry the catch round with the spindle. The wheel NO, having 102 teeth, and a diameter of four feet 14. inches to the pitch stroke, is screwed to the side of the hoops or cases that inclose the stone. These hoops, a section of which is represented by a, b, c, d, are made in two parts, and screwed to gether by four bolts 6, 6, 6, 6. They are lined with milled iron, pierced into small holes, in order to per mit the escape of the dust, and prevent the barley from being carried along by means of the mill-stone.
When the hoops are turned round by the wheels already described, they are supported and kept clear of the stone by the collars It and i. The collar Is is larger than i, in order to give room to the spout PT to till the hoops with barley. This is effected by a thin plate of iron k, about an inch larger in diame ter than the inside of the collar, which is kept close to the side of the collar next the stone by the staple 1 on each side of the stone spindle. The other end of it is kept fast by the cover of the pillow block M. In the plate k, a hole is cut for the end of the spout PT. When the barley is made, the hoops are stop ped by putting the lever N towards/ : a small sluice which is upon the side of the hoops, as at a, b, is then openql, and the made barley is allowed to run. off into the trough Q. When the hoops are thus emptied, the sluice is shut, and the lever Nis brought to g. By this means the wheel M engages with the spindle R, by the catch 2, 5, and the sluice X being opened, the hoops are filled with fresh barley. (J. A.