The type E coupler became Standard in March 1932, superseding the earlier Type D. How long would the type D have remained in service? Was there any recommendation or requirement to replace them on pre-1932 cars? Would rebuilds of pre-1932 cars have received type E couplers? Would broken D kunckles be replaced the taller E knuckle?
--- In STMFC@..., "David" <jaydeet2001@...> wrote:
The type E coupler became Standard in March 1932, superseding the earlier Type D. How long would the type D have remained in service? Was there any recommendation or requirement to replace them on pre-1932 cars? Would rebuilds of pre-1932 cars have received type E couplers? Would broken D kunckles be replaced the taller E knuckle?
David Thompson
The Type D was legal in interchange well after the cut-off for this list... I don't remember the exact year, but until sometime around 1972. As I recall, there were a bunch of pre-D designs that were also still legal that late, and of course many were still in use on non-interchange cars like coaches and cabooses.
I'm not sure an E knuckle would fit a D... the lock parts were also somewhat different.
The type E coupler became Standard in March 1932, superseding the earlier Type D. How long would the type D have remained in service? Was there any recommendation or requirement to replace them on pre-1932 cars? Would rebuilds of pre-1932 cars have received type E couplers? Would broken D kunckles be replaced the taller E knuckle?
The Type "E" was voted by the ARA as "Recommended" practice in 1930 and was advanced to "Standard" practice on March 1, 1932. Within the provision to advance the Type "E" was the stipulation that the Type "D" would remain the standard within the ARA's Manual until the "E" came into general use.
The Type "E" was not required on new cars used in interchange until August 1, 1933 and on rebuilt cars August 1, 1937. The rebuilt requirements contained a litany of exceptions mostly due to car construction (underframe) dimensional limitations. Any interested folks can ask and I will try to help.
