[Illustration: Grappling Hook]
* * * * *
[Illustration: Acetylene lamp]
We have also received from France the account of an invention in the
shape of a bicycle lamp in which acetylene is burned. The great
difficulty with the use of acetylene has heretofore been that the gas
will not burn unless under high pressure, and the receptacles in which
the gas is generated could not be so made as to insure them against
exploding. Acetylene gas, as generally used, is generated by bringing
water in contact with the calcium carbide. The gas forms so rapidly that
it is extremely difficult to control it, therefore the attention of
inventors has been directed to this question. This lamp seems to be a
very clever arrangement for producing the gas in the right quantity
without danger of explosion.
It is described very clearly by the illustration herewith. The upper
part, "E," is a small reservoir in which water is put; this water is
released in small quantities through the tube at the right, and, flowing
into the lower part of the lamp, comes in contact with the calcium
carbide, which is in the receptacle "P"; the gas thus generated is held
in the reservoir "G," and when sufficient pressure has been created is
forced out through the burner "B."
The lamp is small and compact; it is but four inches high, and yields a
beautiful bright light which will not blow out.
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