My wooden replicas purpose

These are replicas, made from wood, of old farm machinery used during the nineteenth century.  Beginning in the spring of the year the fields had to be plowed, with the four bottom disc plow, then harrowed to break up the clods, then with the planter to plant seeds in rows, or grain with a drill (like a planter) to sew the grains, pray for rains on time so the seeds will come up, the weeds will come up also, then the cultivator will cut the weeds right up close to the beans or corn or whatever seeds were planted, pray for rains on time to make the plants grow to maturity.  The mature plants are cut by blades attached to the cultivator tool bar or a mowing machine to cut the grains and hauled to the thrashing machine in wagons and the thrashing machine separates the seeds from the chafe and the seeds are sacked for market while the chafe staked or stored to feed the livestock.  The offset disc will be to plow shallow ground or control weeds etc. as it moves the dirt one way with the front set of discs and the other way with back set of discs.