Harrison 140 Project

[Agroshield]

Quite a few Harrison manuals here, pick your model or download all of them as there is some cross-over between models:

https://passion-usinages.forumgratuit.org/f32p100-tours-lathes

Machines are listed in alphabetical order, so Harrison is near bottom of page.

 

[Brad93]

4.5HP will be overkill for the lathe, you’re even more likely to damage something if you have a crash.
The three phase motor your lathe has is 1.5HP or 3HP depending what speed you have it set on.

 

[Brad93]

Now I have a mill I can start thinking about making this steady I swapped with @badabec fit this lathe.

I need to measure the angle of the V and decide whether the steady should sit on both V’s or just one.

 

[Brad93]

Scrap that the V is 90 so easy enough to do in the mill

 

[badabec]

Looking good, that's one less thing I'm not tripping over any more. Now to get rid of the Acvoake vice

 

[MBB]

Fit onto the rear v to enable the saddle to move past the steady.

 

[Brad93]

Fit onto the rear v to enable the saddle to move past the steady.

The steady is too wide to let the saddle pass in any case.

 

[Seadog]

The steady is too wide to let the saddle pass in any case.

You'll find that a serious hinderance in use. You need to reduce the width.

 

[Richie Griffin]

Hi folks, some great info here, well done! I’ve just bought a 140 (collecting on Saturday) and it doesn’t have a fixed steady. What is the advice on how I could pick one up? Regards, Richie

 

[ronan]

Hi folks, some great info here, well done! I’ve just bought a 140 (collecting on Saturday) and it doesn’t have a fixed steady. What is the advice on how I could pick one up? Regards, RichieView attachment 308481View attachment 308476View attachment 308478View attachment 308479

You could try Damien up north, he deals with machinery and tools a bit. His contact no is in the advert below.

Machinery & Tools Ads For Sale in Ireland | DoneDeal

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www.donedeal.ie

 

[Brad93]

That's a 140, but its got the wrong gearbox.

 

[mtt.tr]

Making progress on my 11"


Nice machines overall

 

[Richie Griffin]

That's a 140, but its got the wrong gearbox.

Thanks for pointing that out. I did notice that but my understanding is that it’s original. I’m going to check the pitch on the leadscrew when I go to collect. If I do need to cut a thread it’s more likely to be metric than imperial. Hopefully it shouldn’t be a deal breaker.

 

[Richie Griffin]

You could try Damien up north, he deals with machinery and tools a bit. His contact no is in the advert below.

Machinery & Tools Ads For Sale in Ireland | DoneDeal

Discover 12,773 Ads in Machinery & Tools For Sale in Ireland on DoneDeal. Buy & Sell on Ireland's Largest Machinery & Tools Marketplace.

www.donedeal.ie

Thanks!

 

[Richie Griffin]

Thanks for pointing that out. I did notice that but my understanding is that it’s original. I’m going to check the pitch on the leadscrew when I go to collect. If I do need to cut a thread it’s more likely to be metric than imperial. Hopefully it shouldn’t be a deal breaker.

If course, the origami badge on the headstock could have been replace with an aftermarket badge! The serial number might or might not provide an answer.

 

[Keith 66]

Thanks for pointing that out. I did notice that but my understanding is that it’s original. I’m going to check the pitch on the leadscrew when I go to collect. If I do need to cut a thread it’s more likely to be metric than imperial. Hopefully it shouldn’t be a deal breaker.

It is probably an early 140, There were a lot of similarities between the earlier L5 machines & the later ones. Is it ex education establishment?
As for a fixed steady i think they exist but have never seen one. School & college machines were supplied with travelling ones but i never saw or heard of any supplied with a fixed one. They must be made of rocking horse doo doo's!

 

[Brad93]

Its not an early 140.

140s were the very last machines in the L5A stable, they were generally had a much better specification than other L5A lathes. All of the 140s had the three lever norton gearbox and the L00 spindle.

It's definitely a 140. Only 140s had the square headstock casting.

That two speed gearbox is off an earlier L5A lathe. Which means you will have to use lots of changewheels to cut different threads.

What's possibly happened is someone has crashed the lathe when power feeding or changed gear while the machine is running. That has damaged the gearbox or the leadscrew, meaning they have had to find a replacement, and that's all they've been able to come up with.

I guess there is a possibility that the lathe was intended to be used in an training establishment or some other application where they did not want the choice of speeds and feeds being available to the operators. The gearbox on that machine is a lot stronger than the 36 speed norton.

 

[minimutly]

Now I have a mill I can start thinking about making this steady I swapped with @badabec fit this lathe.

I need to measure the angle of the V and decide whether the steady should sit on both V’s or just one.

I reckon if you want a fixed steady you need to recast the bottom half of that @Brad93 . It's hamstrung by its width otherwise. You could cast it in ally? Or maybe @pressbrake1 could get it done in iron if you make a pattern.

 

[Brad93]

I reckon if you want a fixed steady you need to recast the bottom half of that @Brad93 . It's hamstrung by its width otherwise. You could cast it in ally? Or maybe @pressbrake1 could get it done in iron if you make a pattern.

That's what I would like to do, get one cast.

 

[Agroshield]

Which means you will have to use lots of changewheels to cut different threads.

There seem to be a considerable number (15+) of these in the cabinet. Maybe you can comment on what changewheels came with a 'normal' 140.

---

To the OP: it is possible to fabricate a fixed steady.

Please see this thread: https://bbs.homeshopmachinist.net/forum/general/34376-a-treatise-on-steadies?t=33552 Particularly note the laminated one, made of lots of thinner pieces.

Another one with dimensions (click on link near top of page - gives proportions so you can scale to fit your one): http://mecha-tech.la.coocan.jp/fixed_steady/fixed_steady-e.htm

Another one http://www.franksworkshop.com.au/Workshop/LargeSteady/LargeSteady.htm

The problem with most standard fixed steadies is that they have woefully small capacity, no provision for changing the fingers and have three fingers so are not so easy to dial in. Make your own with four fingers, large capacity and various fingers (bronze-tipped, bearing-tipped, nylon-tipped). The large capacity will also allow you to use a cathead on odd-shaped pieces.

Manual here if you have not already found one: https://passion-usinages.forumgratuit.org/t5402-harrison-140