Subject: Bradford C.T. trolleybus framing
Chassis: AEC 661T
Body: English Electric H30/26R
Location: Preston, Dick, Kerr works
Date: 1938/39

Detail of a lower saloon pillar showing the shallow stress panels at floor level and waistrail. The swaging which gave a continuous rib along the panels allowed thinner (and therefore lighter) sections to be used without a loss of stiffness.

Photograph from the GEC archive