The sciopticon manual, explaining lantern projection in general, and the sciopticon apparatus in paricular (1877)

Record Details:

Title:
The sciopticon manual, explaining lantern projection in general, and the sciopticon apparatus in paricular
Date:
1877
Publisher:
Philadelphia, J. A. Moore
Volume:
The sciopticon manual, explaining lantern projection in general, and the sciopticon apparatus in paricular
Leaf #:
000163
Language:
English
Collection:
Books
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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154 S CIOPT ICON MANUAL. While the amount of the alcohol flame depends on the height of the fountain, this flame is easily regulated by the hydrogen key to the exact amount required by the oxygen. The oxygen, shooting up like the middle arrow from the 'flat-mouthed jet, o (see its shape, front view, Fig. 39), combines with the hydrogen instanta- neously as it strikes the lime, with little tendency to cool and blacken a central spot. THE I>R17MJIOM> LIGHT. « Lime rendered incandescent by the * ignited jet of an oxy-hydrogcn blow- pipe, invented by Dr. Hare, of Phila- delphia, and used with marked success in the British Signal Service, by Lieut- Drummond, has been called the Drum- No. 2, Fig. 38. ^Ond Light. This term applies distinctively when a collected supply of hydrogen gas, as well as of oxygen, is required, and when both are alike under heavy pres- sure and forced through the tubes of the blow-pipe. Oxygen and hydrogen, mixed in a common reservoir, cannot be safely used in connection with an ignited jet. The separate gases, however, may be forced upon the lime through entirely separate jets, in accordance with the primitive arrangement; or, which amounts to about the same in effect, the two currents may terminate in tubes one within the other, called the concentricjet, mingling as before only when projected upon the lime; or, which is counted the most effective and is now in general use, the oxygen and hydrogen may be mixed in