| 摘要 |
388,995. Batteries. APOSTOLOFF, S., 2078, Broadway, Brooklyn, New York, U.S.A. July 18, 1932, No. 20296. Conven. tion date, July 18, 1931. [Class 53.] A dry cell that remains inactive until it is required for use is provided with a depolarizing electrode A, the carbon rod 1 of which is supported by a cork B which closes the upper end of a paper shell C. Within the shell C is a zinc cup D and a glass ampule e containing electrolyte. The shell C may be continued downwards at G and completely enclose the zinc cup D. The parts C and G can be readily severed at the point 17. To activate the cell the part G of the shell is removed and the cup D telescoped into the upper part C of the shell whereby the ampule e is broken and the electrolyte liberated. The broken glass forms an insulating layer between the electrodes A and D. The bottom of the cork B is of smaller diameter than the top so that it fits into the cup D and makes a tight seal to prevent escape of electrolyte. The upper surface of the cork is coated with a waterproof cement which also enters the pores of the upper part of the shell C to make a watertight joint. The lower part of the cork may also be coated with a sealing compound. |
