On May 28, 2007, at 3:01 PM, destron@... wrote:
Photos show these cars with vertical staff hand brakes, which were
required by AAR rules to have a staff diameter of 1-1/4", so that's
obviously what the first line refers to.
In the 1920s several railway appliance manufacturers offered mechanisms
for multiplying the power applied by the brake chain that wound around
the bottom of the vertical staff, thus providing additional braking
power. The two whose names ended with "...co" were Gemco and Ureco
(Union Railway Equipment Co.). I'd vote for Ureco.