what year was the corn planter made?

Answer 1

1799 - first patented corn planter (Eliakim Spooner, Vermont)
1828 - A human-powered, wheelbarrow-style seeding device is designed for “any kind of seeds, and any number of them at a time, and at any required distance, as fast as a man can walk … up to 10 acres a day!” .
1839 - D.S. Rockwell patents a planter that becomes the basic design for machines that later become successful. Even though Rockwell’s prototypes fail to work properly, his innovative ideas are the first to describe “four wheels of equal size … two seed boxes … furrows opened by peculiarly shaped shovels … seeds metered by a device using a combination of slides and partitions, a toothed segment and pinion … seeds dropping between two diagonally set blades … a rear wheel set behind the blades to cover the seed and pack the earth.” Rockwell’s invention is one of the most noteworthy for it's time
1850 - Edward Wicks (Pennsylvania) patents a planting cylinder containing cells or cavities that can be enlarged or reduced as required, and D.B. Rhodes (New York) introduces a 2-row planter featuring a hopper with two sliding bottoms arranged to measure and drop seed.
1853, and into the 1860s - George Brown (Tylersville, Illinois) patents a series of innovative planter patents: “Furrows that open with edged runners; corn 'precisely placed’ under the control of an operator; and a closing wheel that covers seeds automatically and in check to allow for cultivating in both directions.” Brown’s is the first successful horse-drawn, two-row pull-type planter.
1857 - Martin Robbins of Cincinnati invents a planter that drops the seed in evenly spaced rows. — the first planter to drop seeds “in check automatically, using an anchored chain..
According to a 1900 census, the modern-day planter is basically “a two-horse machine, built almost entirely of steel, with two seed boxes, a check rower, drill and force feed attachments for which are claimed absolute accuracy in dropping the seed.
1924 - with the introduction of the row crop tractor, 4-row planters are first developed. Originally, these planters are early horse-drawn 2-row planters hitched together. Shortly afterwards, newly designed 2- and 4-row corn planting units — tractor-mounted and pull-type.

Answer 2

1958