. An encyclopædia of agriculture : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and of the cultivation and economy of the animal and vegetable productions of agriculture. fittest for the purpose. 4141. The runner, as it has been seen {Jig. 602.), is moved by means of an axle passing through thecentre, with a long arm, reaching without the bed of the mill, for a horse to draw by; and with a shortone passing to an upright swivel, turning upon a pivot, in the centre of the stone, and steadied at thetop, by entering a be
. An encyclopædia of agriculture : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and of the cultivation and economy of the animal and vegetable productions of agriculture. fittest for the purpose. 4141. The runner, as it has been seen {Jig. 602.), is moved by means of an axle passing through thecentre, with a long arm, reaching without the bed of the mill, for a horse to draw by; and with a shortone passing to an upright swivel, turning upon a pivot, in the centre of the stone, and steadied at thetop, by entering a bearing of the floor above. An iron bolt, with a large head, passes through an eye inthe lower part of the swivel, into the end of the inner arm of the axis. Thus the requisite double motionis obtained, and the stone kept perfectlv upright (which it ought to be) with great simplicity, and withoutstress to any part of the machine. This is the ordinary method of hanging the runner. I here is a morecomplex way of doing it, but Marshal savs he sees no advantage arising from it. 1 here are some mills,it seems, with two runners, one opposite the other. On the inner arm of the axis, about a loot lroin the X x 2 076 PRACTICE OF AGRICULTURE. Tart runner, is fixed (or ought to be, though it is frequently wanting) a cogged wheei working in a circle ofCOgf, Sxed ii|ion the of the mill 414i The diameter qf the wheel is determined by the height of the axis above the bed of the mill; thediameter of the ring of cogs, by the distance of the wheel from the centre of motion. The use of COgwheels is to prevent the runner from sliding, to which it is liable when the mill is full; the matter, whennearly ground, rising up in a body before stone Betides, by assisting the rotatory motion of thestone, it renders the work more easy to the hone These wheels require to be made with great exact,ness; and in a country where carpenters are unaccustomed to them, a millwright should be employed i
Size: 2046px × 1221px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1871
