As I understand it, farmers had to set "check wires," which had a series of knots at a certain spacing. The wires were lined up with fingers on the planter, and every time the planter encountered a knot in the wire, the fingers would "trip" and deposit a seed. It led to very uniform row spacing, as the check wires were re-used on the next set of rows...but as I understand it, the process was very time-consuming, as the check wires had to be repositioned as you moved through the field.
At least that's how my dad explained the process to me. I've never seen it actually used around here.
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Today's Featured Article - A Tractor's Point of View - by John Manley. I began my life on August 3,1941. I was actually built at different times and days but I was officially an M Farmall on August 3.I was real nice and shiny. That�s me, in the old picture, third from the left. I was loaded on that train and sent to a little town in South Carolina. I didn�t get to see much of that town. I was moved off the train fast and on to the dealer�s
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