Horse-hoeing husbandry : $b or, an essay on the principles of vegetation and tillage. Designed to introduce a new method of culture; whereby the produce of land will be increased, and the usual expence lessened. Together with accurate descriptions and cuts of the instruments employed in it.Tull, Jethro
Science
Horse-hoeing husbandry : $b or, an essay on the principles of vegetation and tillage. Designed to introduce a new method of culture; whereby the produce of land will be increased, and the usual expence lessened. Together with accurate descriptions and cuts of the instruments employed in it.
Tull, Jethro
Agriculture -- Early works to 1800; Plows; Tillage
E is the lower Piece of this End, and an Inch and a quarter broad: Its
End is to stand against the prick’d Line _c d_, and its other End at
the opposite prick’d Line in B. The Piece D must be screw’d upon the
upper Edge of the Piece E, as the Bottom F must be screw’d up to its
under Edge, which will stand upon the prick’d Line _e f_. The Three
Pieces G, H, I, being opposite to C, D, E, and of the same Dimensions
with them, placed in the same manner, make the other End of this Box.
At _g_ in the Bottom F, appears the Hole which is over the Mortise of
the Brass Seed-box, the Shape and Size of which Hole may be seen by the
prick’d Lines upon the Flanches B, C, of _Fig._ 9. in _Plate_ 2. The
foremost End of which Hole reaches almost as far forwards as the End
of the Axis of the Tongue of the Brass Seed-box, and its hinder End
almost as far as the hinder End of its Cover[269]. The Bottom F, being
of the same Length, with C, D, E, and their Opposites, bears against
the prick’d Line _d h_ of the fore Side A, and against the opposite
prick’d Line of B. The Length of this Bottom F is the Breadth of the
Inside of the Box, and its Breadth reaches to the outer Edges of the
Pieces E and I, being Three Inches and an half.
[269] Commonly it reaches within half a quarter of an Inch; but if
it should only reach within a quarter of an Inch of them, it would
not have that ill Consequence at that Distance, as the same Position
would have in the large Seed-boxes; for, in them, the Seed would,
in such Case, be apt to bear against the Bottom of the Hopper, and
obstruct the Motion of the Brass Tongue, which small Seeds cannot do
in the Turnep-seed Box.
All the Jointings of these Pieces must be at right Angles, and so
close, that no Seed may run out at them. All the Pieces are of Board,
full half-inch thick, except the Bottom, which is thinner.
_Fig._ 11. shews the Bottom of the Box with its under Side uppermost,
where the light Part A is the Bottom-board, covering the Two
End-boards, E and I, in _Fig._ 10. The dark Parts B and C are the under
Sides of D and H, in _Fig._ 10. At _a_ is the fore End of the Brass
Seed-box screw’d up to this Bottom-board. At _b_ is the hinder End of
the Brass Seed-box screw’d up in like manner, the outer Edge of the
Flanch of the Seed-box being even with the Edge of the Bottom-board.
The End of the Brass Spindle, with its Fork, appears at C.
_Fig._ 12. shews this Box standing upon its Bottom, with its hinder
Side laid open. At _a_ is the Hole in the Bottom, under which the Brass
Seed-box is fasten’d, with small Iron Screws, square near the Heads,
passing thro’ the Bottom, and thro’ the Holes at each End of the Brass
Box, with their Nuts underneath. The Pins must touch all the Sides of
the Holes in the Brass, to prevent the Seed-box from moving any Way.
Public-domain text, read in full here on John Shaqi.
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