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53
and a swing motion bolster (52). A decade later, Bettendorf
made some improvements in the swing motion truck, and
soon thereafter the design was sold to the Standard Car Truck
Co., which marketed it in the 1940s and later as the Barber-
Bettendorf caboose truck (53).
54
53: Bettendorf made some minor improvements to its
swing motion caboose truck in the 1930s and then
sold the rights to the design to the Standard Car
Truck Co., which renamed it the Barber-Bettendorf
swing motion caboose truck and continued to offer it
through the 1950s.
54: Introduced in the 1930s, the Simplex truck
employed long leaf springs, in addition to coil springs,
Freight Car Trucks - 20
index contents
MRH-May 2013