OF HANGING MILL-STONES.
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Chap. 13.]
but if we have a stiff-ryne, it will be much more difficult,because we have not only to fix the spindle perpendicu-lar to the face of the bed-stone, hut we must set the faceof the runner perpendicular to the spindle, and all thismust he done with the greatest exactness, because theryne, being stiff, will not give way to suffer the runnerto form itself to the bed-stone, as will the balance-ryne.
The bed of the ryne being first carefully cleaned out,the ryne is put into it and tied, until the stone be laiddown on the cock-head; then we find the part that hangslowest, and, by putting the hand thereon, we press thestone down a little, turning it about at the same time, andobserving whether the lowest part touches the bed-stoneequally all the way round; if it do not, it is adjusted byaltering the wedges of the bridge-tree, until it touchesequally, and then the spindle will stand perpendicularto the face of the bed-stone. Then, to set the face ofthe runner perpendicular, or square, to the spindle, weremain in the same place, turning the stone, and press-ing on it at every horn of the ryne, as it passes, and ob-serving whether the runner will touch the bed-stoneequally at every horn, which, if it do # not, we strikewith an iron bar on the horn that bears the stone high-est, which, by its jarring, will settle itself better into it3bed, and thereby let the stone down a little in that part;but, if this be not sufficient, there must be paper put onthe top of the horn that lets the stone too low; pbservingto mark the high horns, that when the stone is taken up,a little may be taken off the bed, and the ryne will soonbecome so neatly bedded, that the stone will hang veryeasily. But I have always found that every time thestone is taken up, the bridge is moved a little out ofplace; or, in other words, the spindle moved a little fromits true perpendicular position, with respect to the faceof the bed-stone, which is a great objection to the stiffhorn ryne; for if the spindle be thrown but very littleout of place, the stones cannot come together equally;
till the points bear tightly on the horn: then proceed to hang the stone, which isvery easily done, by turning the screws.
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