Can you help identify this lathe compound slide?

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Can you help identify this lathe compound slide?

This topic has 11 replies, 8 voices, and was last updated 15 October 2022 at 23:33 by AJAX.

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9 October 2022 at 00:31 #616642
AJAX
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@ajax
This compound slide has joined my "it will be useful one day" collection. It has the feel and appearance of being a quality item, with a slick action, thrust bearings and adjustable gib strips. Curiously, it incorporates a small lever and secondary range of movement perpendicular to the feed screw. I'm not sure how that would be used.

If anyone could enlighten me or even suggest a machine this belonged to I would be interested to hear from you.
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9 October 2022 at 00:31 #14674
AJAX
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@ajax
13 October 2022 at 21:43 #617195
john willman 1
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@johnwillman1
I have a Karger DL1 lathe which has a similar topslide with the extra lever operated slide. Unfortunately the extra slide takes up so much room the only small tools can be used, and I have had to use an alternative one.
13 October 2022 at 22:03 #617197
Bazyle
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@bazyle
Built-in screwcutting tool retraction is a nice feature.
14 October 2022 at 18:12 #617305
Phil Whitley
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@philwhitley94135
From the colour (if original) Possibly Raglan?
15 October 2022 at 12:17 #617388
john willman 1
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@johnwillman1
Since most machinists turn the topslide to half the thread angle and so that the tool only cuts on one flank, having the retracting part at right angles is quite useless. I never found a use for it !
15 October 2022 at 12:34 #617391
Hopper
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@hopper
Posted by john willman 1 on 15/10/2022 12:17:11:

Since most machinists turn the topslide to half the thread angle and so that the tool only cuts on one flank, having the retracting part at right angles is quite useless. I never found a use for it !

It should still retract the tool out beyond the OD to clear for reverse traverse, should it not? Then reset the retraction and then add the next depth of cut on the topslide dial?

Seems like it would be just about as easy to wind the cross slide dial. But perhaps the quicker action of the retractor allows you to cut closer to a shoulder or to screwcut at higher rpm, which is always very handy.
15 October 2022 at 15:04 #617410
Ian P
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@ianp
Posted by john willman 1 on 15/10/2022 12:17:11:

Since most machinists turn the topslide to half the thread angle and so that the tool only cuts on one flank, having the retracting part at right angles is quite useless. I never found a use for it !

Do you mean you have a machine with the retracting function, but you never use it?

How do you know 'most machinists' set the topslide to half angle? I for one have never done that.

Ian P
15 October 2022 at 17:05 #617419
ega
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@ega
Posted by Ian P on 15/10/2022 15:04:01:…

How do you know 'most machinists' set the topslide to half angle? I for one have never done that.

Ian P

As with Guinness – try it, you might like it!
15 October 2022 at 19:35 #617429
Tony Pratt 1
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@tonypratt1
Proper use of a retracting top slide makes screw cutting a little less likely to go pear shaped.

Tony
15 October 2022 at 23:32 #617449
AJAX
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@ajax
Posted by Bazyle on 13/10/2022 22:03:47:

Built-in screwcutting tool retraction is a nice feature.

Thanks, I guess it could be used that way.
15 October 2022 at 23:33 #617450
AJAX
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@ajax
Posted by Phil Whitley on 14/10/2022 18:12:17:

From the colour (if original) Possibly Raglan?

It looks like original (chipped) paint to me.
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