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I have devised a new apparatus primarily for the administration of nitrous oxid and oxygen, the chief aim being simplicity, utility and portability. I have also perfected two new methods of administration: ether by the closed drop method, and the warm vapor method, whereby the vapor of all anesthetics by all methods is warmed to body temperature at the time it is inhaled. Several other original and practical features will appear in the following description:
A light stand is provided for holding two cylinders each of nitrous oxid and of oxygen. The supporting standard has slip, instead of threaded, connections with the base and the top bearing the cylinders so as to be quickly assembled and dissembled. Small rubber tubing leads from the top of the stand to an 8-liter gas bag, the neck of which is attached to a metal fitting, which carries a shut-off and air vent
COBURN RC. A NEW APPARATUS FOR ADMINISTERING AND WARMING GENERAL ANESTHETICS AND NEW METHODS OF ADMINISTRATION. JAMA. 1912;LVIII(12):833–835. doi:10.1001/jama.1912.04260030231002
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