Drummond M-Type 3.5-inch metal-turning bench lathe

[davidsewellParticipant @davidsewell]

Hi – I am trying to restore a Drummond M-Type 3.5-inch metal-turning bench lathe that I have inherited. Having spent some time cleaning and stripping down I have found that the brass cross thread nut on the lead screw is stripped. Can these be sourced now as would be a shame to scrap or use for spares only. Any guidance appreciated.

[BazyleParticipant @bazyle]

Looks like an early M or B type before they introduced the single half-nut.
Is it completely stripped or just very worn? If the latter you can make a new one once the lathe is back together. Otherwise you can make temporary ones in various ways. It may be helpful to join your local model engineering club for assistance and possible use of another lathe.
https://www.lathes.co.uk/drummond/page6.html

 

[Roderick JenkinsParticipant @roderickjenkins93242]

That looks odd to me.  I would have expected a clasp nut on the lead screw and that thread looks square from here but I may be mistaken.

Rod

Edit – having followed Bazyle’s link I see that early M types did not have a rack so the lead screw was constantly engaged.  Getting a Square thread nut will be tricky, I think someone will have to make one for you.

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