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Tom Senior M1 dual spindle

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Tom Senior M1 dual spindle

Home › Forums › Manual machine tools › Tom Senior M1 dual spindle

Viewing 6 posts - 1 through 6 (of 6 total)
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  • 25 July 2024 at 20:22 #743551
    Chris Stevens 2
    Participant
      @chrisstevens2

       

      I have this old Tom Senior M1 mill, which started life at the Winfrith atomic energy facility back in 1959. Have been told it’s a dual spindle type and is very rare.  The head is similar to an S, but is driven by a second spindle near the top of the column, and doesn’t have its own motor like the S head. Just wondering if anyone has seen anything like this at all? It runs very smoothly but is in need of cosmetic work obviously and some of the chromed parts need re-plating.    20240613_185830(1)

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      25 July 2024 at 20:55 #743562
      Chris Stevens 2
      Participant
        @chrisstevens2

        20240706_18090820240706_180359

        25 July 2024 at 23:50 #743583
        Chris Crew
        Participant
          @chriscrew66644

          The auxiliary spindle looks to be mounted in the hole that would normally take the over arm bar when the machine is set up in horizontal mode. It looks like the mounting for the vertical head has been bolted or clamped to the column v-ways so the spindle could be removed, possibly as a self contained unit, and the machine then becomes a standard horizontal model if the over arm is available. This modification could have been done by Senior’s or by the workshop it was supplied to. It’s certainly a novel machine and probably a one-off.

          26 July 2024 at 00:10 #743584
          Chris Crew
          Participant
            @chriscrew66644

            Having just checked on lathes.co.uk it appears this variant was available from Senior’s and only two machines of this type are known to exist. You must have one of them or possibly a third one has appeared.

            26 July 2024 at 11:38 #743644
            Chris Stevens 2
            Participant
              @chrisstevens2

              Thanks for your interest, Chris. The one on Tonys site is mine. I was told by the owner of a Tom Senior webpage, that he has only ever seem one other the same, but that had been burnt out in a fire.

              The head seems to have a lot in common with the S type, but obviously no motor and is driven by the spindle that mounts into the overarm position.

              Its still got the Winfrith plant number on it, and while it might have been modified by them that seems unlikely, as they would probably have got a mill more suited to their purpose, rather than modify?

              30 July 2024 at 20:37 #744365
              old mart
              Participant
                @oldmart

                Is the spindle MT2?

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