Here is my 201 1/4 Barnes Drill Co., delivered in August 1944 to the Devonport Naval Base here in Auckland, New Zealand.
Serial No. 6564.
MT4, 12" spindle travel, counter balance weight inside the machine. Very sensitive.
8 speeds (4 gears + fast and slow gear). 95, 150, 236, 382, 600, 943 RPM.
6 feed rates.
The Allis Chalmers 3hp motor runs continuously, driving the horizontal input shaft at 600 RPM. The same input shaft drives an oil pump which pipes oil continuously throughout the machine. The only manual oiling points are the spindle (quill) cross shaft bearings, the table lift gear and slideways and the counterweight pulley bush.
The big bronze lever works the clutch. Pull down for normal rotation, up for reverse (speeds are faster in reverse). Once the clutch lever is pulled fully down, it latches. To stop the spindle you touch the trip lever, the clutch lever returns to neutral and applies the spindle brake.
There are adjustable dogs on the spindle cross shaft. The lower dog will trip the clutch, so stopping the spindle and feed when depth is reached. If tapping, the same adjustable dog can trip the clutch lever and automatically engage the reverse clutch so it reverses out. There is also an upper limit trip.
The Brown & Sharpe coolant pump sits outside the gearbox on a small shelf, driven via a dog clutch off the continuously running input shaft. The "shelf" has a cast-in trough with return pipe to catch any coolant leakage from the pump gland. There is a good-sized coolant trough around the table with telescopic pipes to return the coolant to the base without splashing.
It is an excellent machine, I would be interested to hear of any other machine of this size which compares.
US$1435 according to a 1941 price list from the Vintage Machinery website mentioned above.