Bayliss's patent 1887. "Eureka" lockfast nut and bolt example 3/4" diam
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Bayliss's patent 1887. "Eureka" lockfast nut. (i.e nib caulked into bolt) and bolt example 3/4" diam.
This arrangement was patented by Mr. S. Bayliss in 1887. The nut is forged with an annular projection or lip which, by caulking, can be embedded in the metal of the bolt.
