Rudolph was my great grand father. According to his son,
Rolland Collison,
Rudy invented the
Collison wrench. Rolland patented it. Rudy did grow up at
Fort Hartsuff. Also,
Rolland said that
Rudy had been friends with William
Petersen who went on to design and patent the vice-grip. Let me know if you'd like more information.