- Back
-
Title: Richard's patent 1910 Locknut (spring teeth engaging thread [Go to resource]
Description: Richard's patent 1910 Locknut (spring teeth engaging thread of bolt) on plug screwed 1 in. diam. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1912-138 Go to resource More Like this...
[Edit] - Back