George W. Osborn, Parkville, Mich.--This is an improved attachment for
seed drills, for gaging the depth at which the grain shall be
deposited in the earth. It consists in an adjustable spring gage bar
attached to the shank of each drill tooth, whereby the teeth may be
made to enter the ground a greater or less depth. It is claimed to
ensure the planting of seeds at equal depth in hard or soft ground,
and to diminish the draft.