Help please on identifying something

[Rai LiivParticipant @railiiv91730]

[Rai LiivParticipant @railiiv91730]

I would appreciate any help in identifying what this fitting is – it looks like it fits onto the bed of a lathe, and I thought it was a mini-tailstock of some kind. However, when searching using similar terms I could not find any similar image, neither could I find information which would identify it.

Thank you for any help.

Cheers

Rai

[Ian ParkinParticipant @ianparkin39383]

Its a micrometer stop that goes before the saddle near the headstock and stops the sadlle at a point set by the rod sticking out

[Rai LiivParticipant @railiiv91730]

Hi there

Thanks for that – do you know what kind of lathe it is from or is it a universal device?

Cheers

Rai

[HacksawParticipant @hacksaw]

Slightly off topic…sorry for hijack etc ! I want something like this ! But ??

If you're, say using power surfacing feed ( Smart &Brown model M) , when the saddle contacts the stop, is there a clutch/slip mechanism in the power drive somewhere ? Or should I chicken out and do the last bit of surfacing by hand ?

[RobboParticipant @robbo]

Micrometer saddle stops like this were/are available for a wide range of lathes. Boxford use one similar to this, which looks as though it clamps onto a 'V' shaped bedway, but the Boxford ones I have seen are smaller, having only one clamp bolt where this has two. Maybe a different version.    Perhaps from a Colchester?

Edited By Robbo on 02/09/2014 19:29:38

[Neil WyattModerator @neilwyatt]

Rai

An end view and something to give a scale may help identify the lathe it's for. Given the apparent age it's probably for an American lathe as most UK ones of that vintage had flat beds.

HI Hacksaw,

> is there a clutch/slip mechanism in the power drive somewhere

1 – Probably not, although some lathes have this feature it would be obvious as there are lots of trip levers etc..

> Or should I chicken out and do the last bit of surfacing by hand ?

2 – Yes.

[Les Jones 1Participant @lesjones1]

Hi Hacksaw,
There is a design for a "High speed screwcutting attachment" in issue 168 (October 2010) of MEW that would do what you want. This is something I hope to get round to making some day.

Les.

Edited By Les Jones 1 on 02/09/2014 21:44:31

[HacksawParticipant @hacksaw]

High speed screwcutting !! Cripes I couldn't do that….I buy threaded rod in Scats instead .

Jesting aside , I have seen in ME various trip linkage desigs for Myfords , but none of my disenage levers/knobs seem suitable for a quick knock off . I could make one of those / / gadgets out of an old mic though…

[Les Jones 1Participant @lesjones1]

My lathe is not a Myford but is uses a similar lever arrangement to engage the half nut so it should be possible to modify the idea to fit. I may also use a lazy way of doing the same thing by having the feed lever spring loaded in the disengaged position and using an electro magnet to hold it in the engaged position. It would only then need a DC power supply and a micro switch as a limit switch. When the limit switch was actuated it would remove the power from the electromagnet and the spring would then disengage the feed.

Les.

[HacksawParticipant @hacksaw]

Now thats food for thought…

.I have some metal roller microswitches from a garage door opener …. and a 24v motor brake electromagnet… thinking cap on !

[WALLACEParticipant @wallace]

I reckon it’s from a Harrison L5 or 5A – it looks very familiar !

If you keep an eye on the saddle as it approaches the stop, it’s easy to drop the auto feed lever while keeping your left hand on the saddle hand wheel to just take up the final 20 thou or so before it hits the stop – assuming you’re not using high roughing feeds.

Best to try and keep the saddle moving without stopping otherwise you get a slight mark on the work piece – well, at least I do !

W.

W.

[John Stevenson 1Participant @johnstevenson1]

Well I can't tell you what it came off but I modified an identical one to fit my CVA lathe.

Just visible in this picture

[Nicholas FarrParticipant @nicholasfarr14254]

Hi, definitely a saddle/carrage stop, there is a photo of a Boxford one in this **LINK** the little knerled screw at the top is for locking the rod in position once it is set.

I would think it would work on any lathe that would accomodate the V or could be modified like the one in John's photo.

Regards Nick.

[Rai LiivParticipant @railiiv91730]

Hi there

Well! I have finally found it! It is a Harrison micrometer carriage stop and the photo, taken from the site http://www.lathes.co.uk/ and many thanks to them, is specifically on a Harrison L5. I have it on EBay at the moment and I thought it was some kind of mini tailstock that could be fitted to the main bed somehow. Ah! Well. All's well that ends well!

The link to the page is here – http://www.lathes.co.uk/harrison/page19.html – for more photos.

Many thanks to all those who gave time.

Cheers

Rai

[Chris TriceParticipant @christrice43267]

Hmmm… Powerful electomagnets and swarf. This should prove interesting.

Edited By Chris Trice on 07/09/2014 10:27:04

[Chris DentonParticipant @chrisdenton53037]

I need one of these for my Harrison.

How much do you want for it?

[Rai LiivParticipant @railiiv91730]

Hi Chris

I do not want to get in any trouble for 'spamming' a forum but it is on EBay at the moment under 'lathe attachment – mini tailstock'. So, as you can see from my title I did not know what it was and that is why I joined this forum and started this thread. I always let my articles go to complete auction so cannot make you an offer.

Cheers

Rai

[Chris DentonParticipant @chrisdenton53037]

Hi, I forgot to bid!

If the buyer doesn't come through then let me know please.

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