8/21/2015:
Head and Table Adjusting Mechanism for Drill Presses and the Like
a.k.a., Table Lift
I looked up patent 2260635 for the table lift; actually the formal name is
Head and Table Adjusting Mechanism for Drill Presses and the Like. The file date is March 26, 1941.
In the patent drawing, the thrust bearing (part #30 in fig 2) is shown installed on the inside of the gear housing and is designed to support the weight of the head frame, if that is to be adjusted. On drill presses equipped with Multi-Speed or Vari-Slo Attachments, the head frame must remain stationary.
My lift is installed such that it will only adjust table height. That is why I have the thrust bearing installed on the outside of the gear housing; so it can support the table weight and make cranking easier. Otherwise, it would serve no purpose.