IF the maximum is to be achieved from our design efforts, says the author, we are finding that we must specifically design the machine around the human operator and his physical and mental capacities.
Mr. Simons shows here what is being done to incorporate this philosophy into the design of tractor seats.
His approach to the problem is:
1.
To record the absolute tractor motion in all three dimensions simultaneously while the field operation is in progress.
2.
To analyze these records in the light of human tolerances.
3.
To design the seat suspension to isolate against the objectionable part of this motion.
