Evening Republican, Volume 17, Number 206, Rensselaer, Jasper County, 29 August 1913 — Expanding Screw to Spike Rails to Ties [ARTICLE]

Expanding Screw to Spike Rails to Ties

For attaching rails to ties on railroads a Frenchman has- invented a screw that is said to hold fighter than anything yet devised. It is in two parts: First a hollow screw, open at the lower end, slit a short distance up the sides had having a worm inside as well as outside. This is screwed into the hole in the tie. Into It is screwed the second part, which is a solid screw, conical in shape. As this is driven home it forces the lower end of the hollow screw apart, making it Bpread and become wider below than above, thus biting the wood of the tie in a way that makes it inextricable. ' .