In their time these were quite the thing. These are plates that go into a planter to space out the seeds. You load the seed into a planter hopper - and these plates are at the bottom of the hopper. They go around as you move the planter and "somehow" only one seed is released for a certain distance that the planter travels. I am a visual learner - so I don't entirely get this or even how to explain it.
Each type of seed has a different size planter. These are for corn. Before this invention came about, there wasn't any way to automatically control how many seeds were planted at a time - unless you did it by hand. I believe these were used around the 1940's.
I liked this picture because of the texture of both the wood background and the old parts. Thanks for stopping by.