Abstract: A crossing construction for a railway including a plurality of spaced-apart cross-ties that support two parallel rails positioned thereon. The crossing includes a center pad of resilient rubber-like material positioned between the rails. A side pad of resilient rubber-like material is positioned on each side of the railway. Shims are used to position the uppermost surfaces of the center and side pads flush with the tops of the rails. On each side edge of the crossing there is provided a cap of resilient rubber-like material that includes a first leg that extends horizontally under a portion of each side pad and a second leg that extends vertically downwardly and covers the ends of the shims and a portion of the ends of the cross-ties the cap may include an extension pad and an L-shaped reinforcing member.

Abstract: An expansion tank is divided into two non-communicating chambers by a flexible elastomeric diaphragm having a peripheral outward projecting, sidewall engaging protrusion that is held in compressed and sealing engagement with the tank walls by a backup ring. The diaphragm-ring assembly facilitates insertion of the diaphragm, provides a positive seal, and prevents the assembly from being forced out of position by extreme pressure differentials.