oxy-hydrogen torch ?

i have a old oxy-hydrogen torch--googling not helful on finding
maker/manuals. ther is another torch maker Elma that has chemical kits for
their product--i am assuming that the physics of creating oxy/hydrogen
from water is not complicated--does the torch set up have to run for
sometime to purge the system of air?--there is a flash arrester in the
line.- Elma chemical kit has potassium hydroxide--is this used to dry the
gas? and boric acid--i am assuming that boric acid is placed in wood
alcholol to acr as a flux and the alcohol to lower the temperature of the
any help really is appreciated
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