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 - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
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