device for absatzlosen withdrawal of individual knueppeln to an endless strand zusammengeschweissten rolled by a schweissvorrichtung

摘要

544,549. Administering anaesthetics. SVENSKA AKTIEBOLAGET GASACCUMULATOR. Aug. 26, 1940, No. 13459. Convention date, Aug. 24, 1939. [Class 81 (ii)] An appliance for supplying anaesthetic gas in a predetermined quantity followed by a second quantity sufficient to maintain the analgesia includes an expansible feed chamber 20 connected to a device sensitive to change in volume of the chamber and adapted to operate a valve 31 to admit air or oxygen to the gas being administered. In the form shown, decrease in volume of the chamber 20 causes pivotal movement of an inverted U-shape member 8 supporting a cam 28, such movement causing vertical movement of a tappet 29 connected to the valve 31. Upon emptying of the chamber 20, the supply of gas is cut off from the patient for a predetermined period of time dependent upon the amount of opening of a throttle valve 7. In a modification, operation of the valve 31 is obtained by connecting the tappet 29 to a lever supporting a weighted cord. Upon decrease in volume of the chamber, the weight can fall, to rotate the lever and open the valve 31. Specification 511,559 is referred to.