Читать книгу Jethro Wood, Inventor of the Modern Plow. - Gilbert Frank - Страница 1

FAC-SIMILE OF THE ORIGINAL WOOD PLOW.

EXPLANATION OF THE FOREGOING FAC-SIMILE

Side view of Plough. A Mould-board, the form of which is claimed as new. B Share claimed. C Standard claimed. DD Screw-bolt, and not confining the beam to the Standard. a, b, c, d, e, the 1st, 2d, 3d, 4th and 5th sides mentioned in the specification. g, g. Excavation at the fore part of the mould-board to receive the share which fills it up and forms an even surface. h Hole to receive the knob or head cast on the under side of the share, which, on being shoved up to its place, nooks under the mould-board at the upper side of the hole, and is held in its place by a wooden wedge driven between the knob and the lower side of the hole. f Notches in the Standard to receive the latch i in elevating or depressing the beam. s, t, v. Straight diagonal lines touching the mould-board the whole distance. u Vertical or plumb line touching the mould-board from top to bottom. H Reverse side of the share. x Knob to hold it fast to the mould-board. y Side view of knob. zz Shiplaps fitting under the point and edge of the mould-board. k Another form of standard keyed on top of beam. Fig. 2d, landside view: E The “landside”. F part of landside cast with mould-board. mm Cast loops to hold the handles claimed. n Head of screw-bolt held by a shoulder made by a projection from the mould-board and standard, through which the bolt passes up to the beam. o Share claimed. p Shiplap claimed. G Inside view of landside. r Tennon at forward end to fit into a dovetailed mortice on the inside of that part which is cast with the mould-board.