Acetylene generator
538,516. Acetylene generators. LUMB, C. F. Jan. 26, 1940, No. 1636. [Class 2 (i)] An acetylene generator comprises in combination an outer vertical water containing cylinder with an inner cylinder open at its bottom end depending from the top of the outer cylinder such that there is an annular space between the outer and inner cylinders. The inner cylinder has an outer jacket, open at the bottom end and closed at the upper end and provided with an opening to the inner cylinder to serve as a container for the gas. Means are also provided to seal the top of the inner chamber and suspend therein a basket of calcium carbide. The outer chamber is preferably provided with an overflow valve to maintain a constant water level, and a safety valve which operates at a pre-determined pressure and which incorporates a water trap operating as a hydraulic back pressure valve. In Fig. (1) 1 is the outer cylinder, 2 the inner cylinder, 4 the jacket on the inner cylinder which communicates with the inner cylinder through holes 5. Means 6 for closing the inner cylinder have suspended therefrom a basket 14 to contain calcium carbide. An arrangement comprising a rocked bar 12 outside the outer cylinder operating by means of the elbow 9 in the chamber enables the height of the basket 14 in the chamber to be regulated. and so consequently regulate the pressure of the gas to be regulated.