An improved toggle spring device(27/1) for use in a switch or movable wing /nose crossing(12/13) of railway turnouts locatable between movable tongue rails(7/7') of switches or between running rails and movable nose(l 1) / wing rails(15) of crossings through link-rods(20/1) such that the device(27/1) is pivotably c...

A power generation apparatus for generation of power from the energy present in waves in an ocean, comprises: a) at least one stationary platform (E) located above mean sea level, with its length oriented substantially parallel to predominant wavefronts at the site; ...

An improved switch expansion joint for use in a railway track at the end of long welded rails secured to sleepers (N,S), said joint comprising a pair of tongue rails (1, 1') slideably disposed against each other and having a gap (G) therebetween, said rails resting on and fastened at the foot of each rail by...