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Catherine L. Gibbon: Improvements in Street Railway Construction, 1892

The Chairs

There were two kinds of chairs, which could be constructed of any depth to suit the pavement: the joint chair, placed at each semi-joint of the rails, and the intermediate chair, placed at intervals between semi-joints. The vertical slots of the chairs received the web of the head and flange sections of the rails. The T slots received the tie bars and the wedges.

the chairs
Click image for larger view of joint chair and single chair. (645K) (From Gibbon Catalogue)