[modeleng] Re: unknown thread
- From: "Dave Beaman" <davebeaman@xxxxxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Mon, 18 Oct 2004 00:00:36 +0100
I got to go with Ron on this Clif, The only copper pipe I ever threaded was
a 2ba, fitted Stuart stationary steam supply oles!
Dave.
----- Original Message -----
From: "Ron Head" <ron.head@xxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Sunday, October 17, 2004 9:54 AM
Subject: [modeleng] Re: unknown thread
Hi Clif
In my younger days I did a fair a mount of work on full size steam, and I
can't recall ever seeing a threaded copper pipe. They invariably used a
swaged or brazed end to the pipe, in conjunction with a union nut. The pipe
end was either conical, bell-mouthed or flat depending on its application.
Regards
Ron Head
----- Original Message -----
From: "Clif Walker" <clif.gwr@xxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Saturday, October 16, 2004 9:02 PM
Subject: [modeleng] Re: unknown thread
> HI All,
>
> As I mentions in a previous message I seem to have gone back to work doing
> some Plumbing.
> Just my luck the job that I am working on has got Screwed Copper pipes all
> over the place which I think stopped being used in the Thirties.
> The threads are 20 TPI so there are absolutely no matching pipe fittings
> these days to join onto it.
> So that I can make connections onto the stuff from modern metric pipe, I
> am
> now having to make adaptors with threads cut in my Lathe .
> So hows that for an up to date Plumber.
> I have a feeling that on Locos threaded Copper is used so how do the
> preservation people get on or do they have to thread cut as well?
>
> Regards
>
> Clif
> ----- Original Message -----
> From: "alanjstepney" <alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Friday, October 15, 2004 4:37 PM
> Subject: [modeleng] Re: unknown thread
>
>
>> There have been many unusual threads throughout the years,
>> I believe that Lanchester cars used a 23 TPI (or was it 25 tpi) thread
>> but
>> of Whitworth form.
>> alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>>
>> www.alanstepney.info
>> Model Engineering, Steam Engine, and Railway technical pages.
>>
>>
>> ----- Original Message -----
>> From: "Phill Smith" <steam@xxxxxxxxxxxxxx>
>> To: <modeleng@xxxxxxxxxxxxx>
>> Sent: Friday, October 15, 2004 4:41 PM
>> Subject: [modeleng] Re: unknown thread
>>
>>
>> No........ <GRIN>
>>
>> But I have a set of BSW taps and dies in 1/32" steps starting from 1/16"
>> through to 1/4". They're not listed in any of my "standard" tables...
> Though
>> my 18th edition Machinery's Handbook does give 1/8" and 3/16" BSW sizes.
> It
>> beats me where my grandfather got them from.... Made by Totem I
> think.......
>>
>>
>> Cheers,
>>
>> Phill.
>>
>> ----- Original Message -----
>> From: "alanjstepney" <alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
>> To: <modeleng@xxxxxxxxxxxxx>
>> Sent: Friday, October 15, 2004 7:18 PM
>> Subject: [modeleng] Re: unknown thread
>>
>>
>> > (Use a big enough spanner and 1/4" BSF will do for any of 'em.)
>> >
>> > Whilst talking about unusual threads, there was a Whitworth for
> microscope
>> > and telescope eyepieces, and similar optical equipment. It was probably
>> also
>> > used on anything where a very fine thread on a large diameter tube was
>> > required.
>> > In that respect it is different from the Whitworth Instrument thread
> which
>> > is of small diameter.
>> >
>> > Has any one any details of this large Whitworth thread?
>> > alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> >
>> > www.alanstepney.info
>> > Model Engineering, Steam Engine, and Railway technical pages.
>> >
>> >
>> > ----- Original Message -----
>> > From: "Tim Rickard" <the_viffer@xxxxxxxxxxx>
>> > To: <modeleng@xxxxxxxxxxxxx>
>> > Sent: Friday, October 15, 2004 11:53 AM
>> > Subject: [modeleng] Re: unknown thread
>> >
>> >
>> > Terry both M6 and 0BA are 6mm dia 1 mm pitch but on account of people
>> hating
>> > to leave well alone they are on account of the different thread form
>> > not
>> > compatible.
>> >
>> > MODEL ENGINEERING DISCUSSION LIST.
>> >
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>> >
>> >
>>
>>
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