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Edgwick Lathe

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AdeV:
Turns out it's a pretty simple mechanism actually... there's a base plate (the "shoe"), and a clamping "thing". The bar that goes up from the "shoe" to the lever is threaded, as you turn the lever it tightens, raising the base plate which squishes the clamping "thing" against the underside of the ways.

See photos (click to embiggen as usual):



Lever in unlocked position:


Lever in locked position (note: more thread sticking out of the top):



Looking at your photo Matt, I think all you need to do is to tighten that threaded bar up so it's just touching the bottom of the shoe when the lever is at the back of the tailstock. I'm going to take a wild guess that it'll be quite stiff, I'm assuming the lump on the bottom is designed to bind slightly in the "shoe" so the lever tends to tighten on the thread, rather than just rotating the whole piece. If not, then I'd tighten it anyway, then wedge a shim in there so that it binds up.

mattinker:
To adjust the tail-stock lever, remove tail-stock, rotate the  clamping bolt to screw into the handle. it is probable that the clamping mechanism has turned a full turn when it was removed at some stage. I would start by removing the tail-stock and turning the whole locking shoe a full turn so that the that the acme screw screws into the handle, thus shortening it. I don't understand why the image won't open on it's own, it's a .pdf!

mat9900:
Thanks very much guys- I was missing the fact that the handle is threaded onto the vertical bolt- I thought perhaps there was something missing off the bottom that raised the shoe.  The round piece turns inside the show so will need shimming out somehow as Ade suggested- anyway now i know what the issue is I will see what I can sort.  Thanks again, Matt

mattinker:
You  shouldn't need shims, take of the head stock, rotate the locking shoe so that the locking bolt screws into the handle a turn and try it again. As I said before, it is probable tha the locking mechanism was turned a full turn when somebody removed it. It won't have worn enough to no longer lock in it's life time!

Regards, Matthew

seadog:
If the bolt rotates, then there is a problem with the shoe. The slot should be straight cut and a close fit to the head. The design is not unlike the Boxford, and I dare say, a lot of other lathes, in that you can adjust the length of the screw by 1/6th of a turn by pushing the shoe up so that the head of the bolt disengages with the slot, then rotating it.

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