A variety of measures were taken to address these problems.
Truck spring stiffness and spring rates were modified. A num-
ber of different trucks designed to improve riding qualities
began to appear, and these efforts continued through the
1930s and into the post-World-War-II period. Friction snubbers
were also developed which could replace one spring on each
side of existing trucks and provide some improvement in riding
qualities at modest cost.
Barber lateral motion devices
As the cushioning effect of lateral motion in trucks had long
been recognized as desirable, the Standard Car Truck Co.
26
26: This cross section drawing reveals how the self-
centering rollers in the Barber Lateral Motion device made
limited sideways motion between the side frame and
bolster possible.
index
contents
1...,145,146,147,148,149,150,151,152,153,154 156,157,158,159,160,161,162,163,164,165,...305