Type of taps

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Type of taps

This topic has 9 replies, 7 voices, and was last updated 2 September 2015 at 08:43 by pgk pgk.

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1 September 2015 at 22:09 #24080
Dullnote
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@dullnote
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1 September 2015 at 22:09 #202890
Dullnote
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@dullnote
Hi I have recently just started this hobby and a friend of mine gave me a set of BA taps his father had, he was happy to give them to me saying his dad would be happy they were being used.

I think they are good quality, maker name is Lehmann, Archer and Lane Ltd, anyone know about them?? they are not marked HSS how can I tell??
1 September 2015 at 22:18 #202893
Michael Gilligan
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@michaelgilligan61133
Jim,

Unlikely to be HSS … but don't worry about it; they will almost certainly be very good!

**LINK**

MichaelG.
1 September 2015 at 23:19 #202900
Dullnote
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@dullnote
How can you tell if HSS or carbon.? Not just these taps but in general
1 September 2015 at 23:36 #202901
Michael Gilligan
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@michaelgilligan61133
Posted by Jim Greenhill on 01/09/2015 23:19:55:

How can you tell if HSS or carbon.? Not just these taps but in general

.

Spark Test

MichaelG.
1 September 2015 at 23:53 #202904
John Stevenson 1
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@johnstevenson1
They were a good brand in their day, usually marked up LAL.

Got quite a few old ones here but still good taps and dies.
2 September 2015 at 08:35 #202919
Lambton
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@lambton
I have a 1929 catalogue of Lehmann Archer products. In the preface there is an account of how the British Association Committee, in about 1881, decided on a screw thread system better suited than Whitworth (below 1/4&quot for instrument applications. This became our familiar BS system.

Mr Lehmann was approached by the Committee to produce the very first BA taps and dies in the range 0 – 16 BA. In order to do this Mr Lehmann had to "invent" machinery capable of generating the necessary, at that time, strange metric pitches.

The BA system came into general use in about 1887 after Her Majesty's Post Office Telegraph Department placed large orders for taps and screw plates.

So Jim you may have no fears about the ancestry of your Lehmann, Archer and Lane taps and dies.

By the way in 1929 a set of BA taps and dies 0 – 10 complete with tap wrench and dies stock contained in a wooden box coat 66 shillings = £3.30
2 September 2015 at 08:40 #202920
Neil Wyatt
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@neilwyatt
Posted by John Stevenson on 01/09/2015 23:53:53:

They were a good brand in their day, usually marked up LAL.

Got quite a few old ones here but still good taps and dies.

I've got my grandfather's set of LAL BA taps and most of them are still usable.

'nuff said.

Neil
2 September 2015 at 08:42 #202921
Nigel McBurney 1
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@nigelmcburney1
about 1 1/2 weeks wages in1929 for a skilled man, bit expensive in those days.
2 September 2015 at 08:43 #202922
pgk pgk
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@pgkpgk17461
According to **LINK**

A craftsman's daily wage 1929 was 75p.. so a week's wages for that set of taps/dies.

…should have outsourced them to china…
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