The Shop > Tools
Ye Olde Screwplate
vtsteam:
Norman:
I like the tap wrench function. Wonder why it said "stolen" Maker's name?
Simon:
Saving on high grade steel?
Easy to find the right size?
No need for a die holder (or several)?
Lower cost?
Easier to make?
One tool does it all?
vtsteam:
It is quite polished (not apparent in pics) and also has a warm brown tinge -- at first I wondered if it had been silver plated. Then realized that was probably the tempered color -- a dark straw. Polished before tempering.
It is beautifully tapered in two directions. The center of the blade is thicker than the edges and the blade tapers in width down its length. the larger die holes are thicker (more threads) than the fine gauges.
Fergus OMore:
--- Quote from: vtsteam on May 25, 2015, 01:31:55 PM ---Norman:
I like the tap wrench function. Wonder why it said "stolen" Maker's name?
Simon:
Saving on high grade steel?
Easy to find the right size?
No need for a die holder (or several)?
Lower cost?
Easier to make?
One tool does it all?
--- End quote ---
Steve
My impression was that this was probably an apprentice's piece made from gauge plate because the 'Stolen' word was done with a pointed punch rather than with proper letter stamps.
Simon- It is a very useful one tool does all thing when all that people tapped were probably Coarse Whitworth( BSW) things.
You know it is not that far into history when the Brits actually were fairly standard. True, there were BA and BSF but not much more in the run of the mill production. Today, I have drawers full of all sorts of taps dies -and still dont have the one that I want. Damned nuisance. Easier to go Metric and be damned
Regards
Norman
vtsteam:
If you mark all your tools "stolen" it might get them returned when borrowed! And if they were stolen, harder to sell.
Of course it doesnt look too good if your shop is filled with tools marked stolen! :lol:
vtsteam:
Anybody got an idea what system or period (or country) these gauges and pitches relate to?
1 through 5 gauge are 28 tpi pitch
6 through 9 gauge are 32 tpi pitch
10 through 12 gauge are 37-1/3 pitch
13 and 14 gauge are 42-2/3 pitch
1 gauge seems to measure about .260" ID
5 gauge seems to measure about .202" ID
10 gauge seems to measure about .136 ID
14 gauge seems to measure about .107" ID
The above die hole ID's would be approximately the minor diameter, so the actual gauge diameter would be larger.
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