That drill press may not have been made to run off a line shaft, if it were, it would have two pulleys on the lower shaft, one fastened to the shaft, the other "loose", that the belt runs on when the machine is not in operation; to start the machine, the belt is shifted onto the "tight" pulley by a shifting fork, usually foot operated on the base of the drill. Obviously, this drill was run with an electric motor usually located on a plinth or column behind the machine; my 21" Canedy Otto drill has an original motor mount at the right side, towards the operator and drives the lower shaft carrying the cone pulley via vee belts, this machine was made in 1947, and I am aware that they were still available up to the mid 1960s at least.