OK This one might take some explaining -
This is a 1950's example of a Blow Lamp, these predate the Blow Torch you're familure with by about 100 years but this was made during the transitional period between the Pump Up paraffin lamps (that explode) and the modern gas bottle type your most likely used to seeing or using.
These get hotter than a Paraffin lamp but with a much more small and directed flame and get hot enough to melt Silver Solder - and don't explode and are cheaper to run than a modern gas bottle.
How it works is -
1) You fill the left hand resivour with Methylated Spirits.
2) You fill the Right hand resivour with the same.
3) you screw on the flame director that's mounted in between the two resivour's onto the front of the end of the pipe on top of the back resivour.
4) You light the top cap of the front resivour with a lighter or match, put it down and wait 30 seconds.
5) The heat from the front fire causes a Venturi effect to happen with an accelerated rate of evaporation and with the nozel shaping the flame and drawing in more atmospheric Oxygen into the combustion chamber raising the heat far higher than normal alcohol flames.
It get's about 5 - 10 mintues of run time maybe even longer with the right fuel and where the wick is placed in the uptube. This is a variation on a time tested and well used design going back to the 1500's at the earliest, they are very effective little units when used right but they only lost out on the manufacturing war because people wanted the life span of a pressurised paraffin model without the explosions and with advances in tech allowing for small and above all disposable gas cylinders they fell by the way side for for 90% of what your doing these are more than enough.
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