From the April 1954 issue of Applied Hydraulics (the original title of H&P):

23 screws are tightened and staked during an automatic cycle
A special tool, a time and labor saving machine, designed and built by Hautau Engineering Co., Detroit, employs air and oil circuits for many of its operations to complete a cycle of automatic sequence. An air cylinder is used for a clamping operation and hydraulic cylinders for raising and lowering operations and for performing the actual crimpstaking. The specific function of the machine is to tighten 23 fastening screws and crimpstake the retaining cups of aircraft fluid couplings. Each operation of the sequence is entirely dependent on the one proceeding it. The machine was developed to meet the special needs of the aircraft industry.