Thread: Jones and Shipman drill press 1932

Sorry Jack - this is the wrong place to ask whether you should buy an old machine (especially one in reasonable condition).
I guess the first question is what are the three speeds? 3 is not a very big number for metal work purposes. If they are all low-ish then it could be a tapping machine. The coolant gutter around the table suggests tapping too. Does it have some sort of reversing or clutch arrangement built in?

Michael

Oddly, no means of securing work or a vice to the table either.

From the description and picture, it is a fairly standard old time 3 speed drill press, probably limited to about 1/2 in timber and 1/4 in in steel.

From the pic, the motor is an induction motor, so basically mains synchronous, typically around 600, 900, or 1800 RPM for 60Hz mains, depending on winding configuration within the motor.

Edit, Factor of 2 slipped into mental arithmetic, speeds would be order of 1200, 1800, or 3600 RPM for 60 Hz, depending on winding configuration within the motor.

Belt drive 3 speed, but narrow steps on the drive pulley, and the spindle pulley guard appears smaller than the drive pulley, suggesting that the drive steps up, rather than down. As a guess, lowest speed is possibly close to direct drive,while highest speed would probably be about 2:1 step up.

Quarter horse motor, not a lot of grunt for bigger drills, and speeds well suited to drills in a 1/16 to 1/4 in range for steel, or bit higher for aluminium or timber. Probably originally a production drill for small holes in a production line.

A. A. Jones and Shipman





http://www.gracesguide.co.uk/images/...09ME-Jones.jpg

This is all I could find on the Maker

The motor is 1725 RPM single phase @ 60hrz. Not knowing the terms for metal working what is a "Sensitive" drill press.

the guy wants $100 for it and i just thought it was in good shape for a 80 year old press. The pillar column with ways is what is interesting to me . it looks like the chuck is always supported by bearings b/c the quill does not extended. Thoughts?

jack
English machines

J&S were a British machine tool maker with a long history. I thought that they might be gone, but they are still around according to their website, but are now part of som other conglomerate Made a range of gear including large mills, lathes grinders etc and obviously some smaller gear as well.

Sensitive implies that you can feel the drill bit being fed into the work and it's reaction, and adjust your feed accordingly. That is there is not a huge amount of friction or damping due to overstrength return springs etc to obscure the 'feel' of the bit working. Generally used for small bits, under say 3/16, where it is fairly easy to snap a bit if you go at it in a hamfisted fashion.

1725 RPM motor coupled with step up gearing suggest a speed range of maybe 2200 to 3500 RPM, suited to small drills to maybe 1/8 in steel, could go larger with light feeds and coolant from a bottle, but the tip speed for a drill in steel would be a bit high for bigger bits running dry, causing poor bit life between grinds.

Suitability would depend on type of work you want to do, it certainly would not be happy doing heavy duty (big holes in thick tough material) work, but with decent spindle bearings could be a very good unit in the sensitive class, the're not common these days, most of the smallish Chinese stuff that makes it to Oz has so much slack in the head bore that you can't reliably predict where they will start a hole to within a millimeter.