Operating manual for a Harrison 140 metric lathe

Operating manual for a Harrison 140 metric lathe

This topic has 5 replies, 3 voices, and was last updated 13 November 2019 at 10:12 by norm norton.

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12 November 2019 at 13:25 #13696
Philip Major
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@philipmajor52482
Containing how to cut an imperial thread
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12 November 2019 at 13:25 #436961
Philip Major
Participant
@philipmajor52482
Hi, I am trying to cut a 20 tpi Unf thread on my lathe, anyone got a manual for it , or advice on first principles to work it out, lathe has a 6 cm leads crew

Many thanks
12 November 2019 at 14:52 #436981
DC31k
Participant
@dc31k
Type 'Harrison 140 imperial threading' into Google.

Inter alia, it will find

https://www.mig-welding.co.uk/forum/threads/gear-cutter.56392/page-2

and

https://www.mig-welding.co.uk/forum/threads/advice-on-lathe-purchase.62989/page-3

These may shed light onto your problem.

Most unlikely to have a 6cm leadscrew unless it has come from a dressmaking shop or is ex-Blue Peter.
12 November 2019 at 20:38 #437037
Philip Major
Participant
@philipmajor52482
Posted by DC31k on 12/11/2019 14:52:22:

Type 'Harrison 140 imperial threading' into Google.

Inter alia, it will find

https://www.mig-welding.co.uk/forum/threads/gear-cutter.56392/page-2

and

https://www.mig-welding.co.uk/forum/threads/advice-on-lathe-purchase.62989/page-3

These may shed light onto your problem.

Most unlikely to have a 6cm leadscrew unless it has come from a dressmaking shop or is ex-Blue Peter.

That will be 6mm then! As you say
13 November 2019 at 07:38 #437064
Philip Major
Participant
@philipmajor52482
Thanks for this . Answer found on Google as per above post. 3 nice pictures of the settings
13 November 2019 at 10:12 #437082
norm norton
Participant
@normnorton75434
These imperial tables for a 140 were all on the Harrison Yahoo forum site, I am sure I put some there, but it is all shut down now by the recent Yahoo policy. There is a new Harrison site and I will have to see if the files of reference data have been transferred across.

I will post my simple .jpg of information here in the hope that it is readable. If not message me with your email and I will copy it to you.
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