_A standard_ or stock, the central part of the plow to which many of
the other parts are attached.

[Illustration: FIG. 49.--SPADING-FORK AND SPADE.]

[Illustration: FIG. 50.--A WOOD BEAM-PLOW
_a_, stock; _b_, beam; _c_, handles; _d_, clevis, _e_, shackle, _f_,
share; _g_, mould board; _h_, landside; _k_, jointer or skimmer, _l_,
truck or wheel, _p_, point or nose, _s_, shin.]

_A beam_, to which the power is attached by which the plow is drawn.
Some plows have wooden beams and others have iron beams.

_Handles_ by which the plowman guides and steadies the plow and also
turns it at the corners of the plowed ground in going about the field.

_A clevis_, which is attached to the end of the beam and is used to
regulate the depth of plowing. To the clevis is attached a _draft
ring_ or _shackle_, to which the horse or team is fastened. To make
the plow run deep the draft ring or shackle is placed in the upper
holes or notches of the clevis; to make it run shallow the ring is
placed in the lower holes. On some plows there are only notches in the
clevis for holding the ring, they answer the same purpose as holes.
The clevis is also used on some plows to regulate the width of the
furrow. By moving the draft ring or shackle towards the plowed land
the plow is made to cut a wider furrow, moving it away from the plowed
land causes the plow to cut narrower.

Some plows have a double clevis so that the draft ring may be raised