What's this tool ?

General cycling advice ( NOT technical ! )
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Sum
Posts: 331
Joined: 17 Jul 2010, 9:13am

Re: What's this tool ?

Post by Sum »

NB if you click on Jonathan's link, you will then have to also click on the "Related objects" to see the objects.
rjb
Posts: 7200
Joined: 11 Jan 2007, 10:25am
Location: Somerset (originally 60/70's Plymouth)

Re: What's this tool ?

Post by rjb »

Thanks all.
This forum is the font of all knowledge. :D
At the last count:- Peugeot 531 pro, Dawes Discovery Tandem, Dawes Kingpin X3, Raleigh 20 stowaway, 1965 Moulton deluxe, Falcon K2 MTB dropped bar tourer, Rudge Bi frame folder, Longstaff trike conversion on a Giant XTC 840 :D
colin54
Posts: 2529
Joined: 24 Sep 2013, 4:34pm

Re: What's this tool ?

Post by colin54 »

It might possibly be made by Buck & Co, who went on to become Buck & Hickman, a history and an example of a saw with a similar stamp
font here.
https://www.tooltique.co.uk/superb-anti ... er-c1840s/
They've gone through a few changes of ownership since then.
https://www.coventrytelegraph.net/news/ ... 80-3063334
I bought a vice from them, way back when.
Nu-Fogey
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531colin
Posts: 16083
Joined: 4 Dec 2009, 6:56pm
Location: North Yorkshire

Re: What's this tool ?

Post by 531colin »

I think rolling threads is (relatively) recent, in terms of the invention and development of the bicycle or clock.
for example, the Ariel motorcycle spokes I referred to on page one probably date from around the 1930s (they were probably bigger than 13 gauge as I could get 13 g bike spokes of course) and the nipples were definitely for cut not rolled threads.
There were 3 types of thread in common use when I was younger; Whitworth (coarse) , British Standard Fine (BSF) , and the small stuff was usually BA....i don't think I ever knew what that stands for!
colin54
Posts: 2529
Joined: 24 Sep 2013, 4:34pm

Re: What's this tool ?

Post by colin54 »

531colin wrote: 30 Mar 2023, 8:51pm There were 3 types of thread in common use when I was younger; Whitworth (coarse) , British Standard Fine (BSF) , and the small stuff was usually BA....i don't think I ever knew what that stands for!
Hi Col, I knew BA stood for British Association, but I didn't know it was based on a metric form until now, all explained here.
https://en.wikipedia.org/wiki/British_A ... ew_threads
I've still got a set of BA little magneto spanners somewhere.
I followed a link within this Wiki Page which took me to 'Thury Thread', which I'd never heard of before now.
'' The Thury thread was designed for small diameter screws, which were then produced with screw plates ''( like rjb's tool ) .Designed by Professor Thury at the University of Geneva for the horological industry.
I've seen a screw plate marked with Whitworth threads whilst I was looking about on the net and a similar looking paddle (plate) tools for reducing (?) or measuring the diameter of wire .
Edit, I found this link on 'Model Engineer' forum, talking specifically about the 'Progress' screw thread (a different Swiss watchmaking screw form).
''The company sold ready made screws and issued a screw plate as a means of checking sizes. Much of the use of the series occurred when makers found it convenient to thread their own screws using the screw plate as a die''.
That makes sense looking at the chart in the link, Progress watch screws were only .05mm apart on their outside diameter, tricky to tell apart I should think.
https://www.sizes.com/tools/thread_progress.htm
Nu-Fogey
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