Rail seat assembly
View Patent ↗A rail seat which includes a) a rail tie b) a pair of rail fastening support shoulders mounted on said rail tie so that a rail can be held to the tie between said shoulders each shoulder having a a rail face and side portions on each side of said rail face extending away from the rail c) a rail pad adapted to lie on said tie between said shoulders which has a pair of projections extending parallel to the tie along side each side portion of each shoulder. The rail seat is adapted to be used with a deep post insulator and incorporates a rib on the support shoulder extending from each side portion against which a face of the rail pad projections abut to locate the pad in position to accommodate the post of the insulator. The rail pad projections are proportioned to prevent the pad from moving out of position under the creep load conditions present when rail cars pass over the rail seat. A resilient tab is provided on each projection to abut the side portions of the support shoulder to retain the pad in position between the support shoulders during transport of the rail tie to the installation site.
1. A rail seat having a rail pad adapted to lie on a rail tie that supports a rail between rail fastening support shoulders and which includes:
a) a pair of transversely oriented rail fastening support shoulders mounted on said rail tie in spaced relationship to respective base edges of the rail, each shoulder having a surface confronting the rail base edge and lateral surfaces extending away from the rail base edge;
b) a generally rectangular rail pad positioned on said tie, between said shoulders, the pad having projections at each corner of the pad, each projection including a raised thickened portion abutting a respective lateral surface of the support shoulder;
c) an insulator having a post portion lying between the rail confronting face of the support shoulder and an edge of the rail pad that underlies a respective base edge of the rail;
d) wherein each support shoulder has a projection extending from each said lateral surface thereof for abutting an outward surface of the raised thickened portion of the rail pad thereby locating the pad in a position to accommodate the post portion of the insulator.
2. A rail seat as claimed in claim 1 together with a recess formed along each outward edge of the pad for receiving a respective post of the insulator, the recess having a web which is a thin extension of the rail pad main body on which the insulator seats.
3. A rail seat as claimed in claim 1 in which the raised thickened portion abutting a respective lateral surface of the support shoulder includes a surface from which extends a resilient tab which creates a force fit between the rail pad and the support shoulder.
4. The rail seat set forth in claim 1 wherein each raised thickened portion tapers downwardly, along a direction parallel to the rail base edge and away from the support shoulder.
5. The rail seat set forth in claim 1 wherein the insulator is a deep post insulator.
6. A rail pad for use in a rail seat of claim 1 and adapted to lie on a rail tie between rail fastening support shoulders, the pad further comprising:
a) said projections extending parallel to the tie alongside respective lateral surfaces of each shoulder, said projections having a vertical thickness greater than the rest of the rail pad;
b) in a recess for the post portion of the insulator, a web which is a thin extension of the rail pad on which the post insulator seats; and
c) on the surface of said projections which abut said lateral surfaces of the support shoulders, a resilient tab which creates a force fit between the rail pad and the support shoulder.