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Padlock research, Armour Research Foundation, Illinois Institute of Technology, Chicago, Illinois, ca. 1950s
Year:
1950 to 1959
Contributors
Description
From the attached caption: "Wearing out the tumblers in padlocks is part of an investigation undertaken at Armour Research Foundation of Illinois Institute of Technology to improve the service of combination-type padlock parts. David Horwitz, associate research engineer, works on wheel that subjects tumblers to repeated rotations which can be translated into years of actual service. William… more
Abstract:
