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Post by dickdastardly40 on Mar 13, 2008 12:27:48 GMT
Mess up this lathe and the group will leave you in the lorch. Regards, Ian ;D Clip, Try copying and pasting the whole link into the address bar, it worked for me when viewing the goppin green previously, the forum software doesn't like the @ symbol in the address. I can't check it as the work computer doesn't allow flickr, youtube or ebay Best Always
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Post by circlip on Mar 13, 2008 12:33:17 GMT
Well, the ones on the lathes page look like OILER cups. The one on the extreme left is the flip top type and the one over the spindle nose is an open one (strange)
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Post by circlip on Mar 13, 2008 12:45:50 GMT
Thanks Al, Yer solved it, (bl**dy tinternet) Oh heck EMMA someone has already bastardized it for you, screw down grease cups, flat surface that they're screwed into looks to have been "flatted" bigger than the original to fit them.
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Myford Matt
Statesman
There are two ways to run a railway, the Great Western way, and the wrong way.
Posts: 621
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Post by Myford Matt on Mar 13, 2008 16:17:43 GMT
Hi Emma
It may not be perfect, but seems like a very tidy little lathe, which will be capable of some fine work.
I look forward to seeing more pictures as you restore/repair it.
One small niggle - is there a focus button on your camera?! :-)
Good luck
Matt
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Post by missemmajade on Mar 13, 2008 21:42:44 GMT
Well, the ones on the lathes page look like OILER cups. The one on the extreme left is the flip top type and the one over the spindle nose is an open one (strange) circlip, I think the sales brochure pic got trimmed a little too far bu the company artist when the background was painted out, ill probably find two with the spring loaded cap thingies on them. Matt and everyone, these pics were only taken on my mobile phone, not the worlds best photographer, but promise to try harder next time.. *EMMA*
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Post by kneedeepinswarf on Mar 13, 2008 21:47:03 GMT
Hello Emma, I have been following this thread with interest, as I spent the first seven years of my working life (from 1961!) turning almost exclusivly on Lorch lathes very similar to yours. The shop where I worked had about fifteen of them, dating from the 1930s to about 1960. I am certain that the grease cups are not original. Grease would never be suitable for a close-fitting lathe bearing. The lathes I used had wick oilers on the early ones and flip up oilers on the later. The oil we used was quite thin, rather like Esso Nuto, as recommended by Myford. As for colour, the 1960 lathes were a rather pleasing pale green, some of the older lathes were so dirty it was dificult to tell with any certainty what they had been, some appeared to have been dark green, and some grey. I would agree that your spindle has been bored at some time. All the lathes that I saw had spindles bored to take collets directly, without an adaptor. Have you noticed something unusual about the slide rest? The top slide appears to have been intended to work from left to right! Notice that the slot for the toolpost is at the front. This would give excessive tool overhang if used for normal turning. This is not as daft as it might seem as it was quite common at one time for German watchmakers' and small instrument lathes to be made with the headstock on the right. Lathes for export were however of conventional layout. Your lathe was certainly made to have the headstock on the left, but possibly the slide rest is not original.
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Post by missemmajade on Mar 13, 2008 21:57:45 GMT
Thanks for your post!
looks like Pale green may be the colour then!
As for the slide rest, i have noticed, and found the lead screw is interchaingeable end to end, so obviously someone has put it back together wrong the last time! I bought all new screws for the cross slide gibs, locking collars, leadscrew nuts etc, cleaned it up, and its back the other way now! Well spotted.
*EMMA*
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Post by missemmajade on Mar 14, 2008 8:57:20 GMT
the more I look, it seems the more problems I find!! the rear bush is a recycled plumbing fitting, I think. Not a happy girl at all tonight. it is in two parts, one is gunmetal I guess, being the top off a gate valve or similar, with a hole thru that is a too loose fit on the spindle. it has a pipe thread on one end, and Has had a piece of water pipe screwed on (with teflon tape) and machined as an adjustable taper. ingenious!! www.flickr.com/photos/10504183@N08/2332089447/the tront tapered bearing just runs steel on steel, and its in reall beautiful condition. all I need to know is if it should have a steel split tapered bush to tighten up on the spindle, or should it tighten up in the headstock taper (like it was) and run on the spindle? I think it should run in the taper, cos every other lathe I have ever worked on works like that, but I'm just guessing I think. I guess while it is all apart, the spindle should be ground, its worn a little, and a new tapered bush should be made. a few locking collars wouldnt hurt either. might have to fly homee for the weekend and spend it on the lathe. *EMMA*
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Post by missemmajade on Mar 14, 2008 12:33:31 GMT
mystery solved.. just need someone to fix it! I dismantled the headstock again of my little ww watchmakers lathe, also a Lorch, and found this bush, which looks exactly what is needed in the big one!. its hardened and polished steel, has anyone any ideas how to make such a thing? www.flickr.com/photos/10504183@N08/2333111060/*EMMA* PS. please cut and paste the link into your browser.. it wont click propperly, cos it has a @ sign in the Address! thankyou for your patience!
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lancelot
Part of the e-furniture
Posts: 471
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Post by lancelot on Mar 14, 2008 17:13:08 GMT
Hi Emma, why go to the trouble of hardening and then grinding to size...would it be feasible to use TITANIUM...or pure TUNGSTEN... or one of the super tough BRONZES...surely these would last the life of the lathe...looking at the photos not a great deal to do...like the colour, All the best for now, John.
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Post by kneedeepinswarf on Mar 15, 2008 16:48:44 GMT
Titanium? Tungsten? A bit exotic for an early twentieth centuary lathe, don't you think! ;D I would probably use either leaded gunmatal or cast iron. This would be easier than trying to make a new steel bearing, with all the complications of hardening, grinding and finally lapping, that would be necessary to achieve satisfactory results. The all steel bearing is probably the best type of plain bearing for a precision machine tool however.
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Post by missemmajade on Mar 16, 2008 1:57:12 GMT
thanks again. I had been thinking like this, too, but didnt want to fit something that will cause a lot of wear quickly or cause the metal to pick up and bind.
I was thinking a hard bronze like Aluminium bronze would do just that, and I wasnt particularly keen to make it from something like that. stainless steel too.
Hadn't thought of cast iron, I am thinking now that that might just be the best. I wonder what surface finish would be best, Maybe as good as its is possible to get on that material?
Also feeling a little daunted ablout making the tapers to match.. I guess if I was to get the bearings a little better, just temporairally, then I could do it on this Machine, and set up the topslide with a DTI on the inside of the steel bushing first, before I assemble it all.
If I send it to dad to do, then I would have to press out the Bush and he could set it up the same on our big toolroom lathe at home.
I think maybe the best is to bore it and fit it with the key to the spindle, then turn it all between centres, and get the angles right and slowly fit it to the bushing. getting the two tapers right will be a challenge though, cos the small taper at the ouside needs to be right I think, before the long taper can be cut up to it. I guess the first step will be to get the shaft reground, as soon as i can. then the new bushing can be bored to fit.
just rabling here, but would like someone elses imput into how this should be made. If I go to an engineering shop to get a one off hardened steel bush, its going to be EXPENSIVE I think!
*EMMA*
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Post by circlip on Mar 16, 2008 7:18:32 GMT
If you're going to get the shaft reground Emma,I would think about having it "Hard chromed." Used this on motor bike fork stanchions to get rid of pitting and corrosion but it also brings them back to the original diameter. An Aussie colleague also had the column of a portable cylinder borer brought back this way. Just re-read this, the operation is carried out by ONE company, not having it ground and then taking it somewhere else to have it plated.
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Post by missemmajade on Mar 17, 2008 11:45:02 GMT
not sure how that would go.. its only undersicxe for about 1" of its length where the plumbing fitting has been rubbing. might be best to get the 2 thou ground off and make the bearing a little undersize. it only has to be done once, to my thinking..
I've started cleaning Paint, and it looks like medium grey underneath. something like a myford.
*EMMA*
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Post by missemmajade on Mar 21, 2008 4:28:07 GMT
Some progress this week. I uploaded pictures of the tailsock cleaned up and in undercoat. Grey is too much of a neutral colour I think, after looking at the undercoat, so Green it is. Loving the quality of the castings, Is almost a pity to Paint them!! Is also a pity that model engine castings arent this nice, I wonder how they are made so smooth and neat? www.flickr.com/photos/10504183@N08/for some updated Pictures. Sorry about the link, might be best to cut and paste it into your Browser again. *EMMA*
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Post by missemmajade on Mar 23, 2008 12:34:40 GMT
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Post by kneedeepinswarf on Mar 24, 2008 13:27:17 GMT
Hello Emma, You are making a good job of the restoration. The shade of green you have chosen is not that far off the Lorch green as I remember it; although it was a long time ago. It is certainly a great improvement over the colour the lathe was when you received it!
Regards Lionel
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Post by missemmajade on Mar 26, 2008 10:04:08 GMT
thankyou. *EMMA*
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Post by missemmajade on Apr 3, 2008 8:00:45 GMT
got the bush back from the machine shop today, I'm impressed, but it did cost as much as the entire lathe did! at least soon ill be able to make my own bits. the guy has made a good job of it, in bronze now, still needs a key before it goes back together.. certainly a lot better than it was. you can find pics at www.flickr.com/photos/missemmajade/(got it to work at last) *EM*
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hew
Member
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Post by hew on Jul 19, 2008 13:09:31 GMT
I'm interested in your lathes progress Emma. Any chance of some more photos.
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