Patent ID: 8123145
Filing Date: 2012-02-28
Classification: E01B

Abstract:
1. A railway tie plate suitable for attachment to a tie comprising: a base plate adapted to be applied to the tie and a pair of abutment members upstanding there from to accommodate there between a rail having a rail flange portion on each side, each upright abutment member providing a slot for receiving a bridging member that has a lower laterally inward surface comprising a cam for reaction with a laterally inwardly inserted clip, and an upwardly facing lower ramp surface defining a lower side of an opening extending through said abutment member and inclining from a laterally outer side of each abutment member upwardly to a termination on a laterally inner side thereof at least as high as said upper side of said rail flange portion engaged thereby, where each ramp surface has a half cylindrical button cast on top of it where said button is used to retain the clip, with said lower ramp surface terminated at a planar surface of an upper side of said plate position wherein an inner end of the clip bears resiliently on an inner side of the rail flange and, said plate having a central portion between the abutment members that tapers in thickness and has an upper side canted with respect to the lower side thereof and said lower side is provided with discrete wedge shape projections spaces inwardly from a longitudinal edge of said plate said projections having vertical surfaces facing in a direction of increasing thickness of the central portion of the plate.