Around the late 1960's Oneonta Yard had three regular yard jobs working. The "South Bat-out,", the "Pull-up," and the "City Engine." The first two worked two or three tricks daily, and the City Engine worked weekdays, switching industries within Yard Limits. The names were historical, and related to former times when the hump was operating and classifying south-bound traffic.
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As I recall, the Bat-Out had been the hump crew that shoved cars over the hump and threw the manual switches in the hump yard to "bat them out" to the proper tracks. The hump yard had only manual switches.
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The Pull-Up worked the south end of the hump yard and assembled the various classifications into the correct order in a train. For instance, a Binghamton train might have cars for the Erie, DL&W, and Lehigh Valley, and those were assembled in a particular order in the train.
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Northward traffic was mostly classified at the inbound interchange and most of it was moved in blocks through Oneonta
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In later years, the hump was shut down and much of that classification was performed at the initial interchanges and local yards, but those Oneonta yard jobs kept their names. In practice, they did what the Yardmaster directed. The hump was restored to service for a few years around 1971 when I was the Track Supervisor at Oneonta. There had been a scale at the crest of the hump. We filled in the scale pit to restore the track. I was never a yardmaster at Oneonta, and I will defer to anyone with more detailed or corrected information.
Ed Cox