Improvements in or relating to Spark Gap Devices for Wireless Telegraphy.

摘要

2214. Goldschmidt, R. Jan. 27, 1913, [Convention date]. Spark-gap appparatus.-In a spark - gap for wireless telegraphy comprising a number of gaps arranged in series, two sets of electrodes are employed arranged in the form of truncated cones or pyramids. The cones or pyramids are cut longitudinally to form the several electrodes, and one cone fits adjustably into the other. The electrodes of one set are staggered relatively to the electrodes in the other set, the arrangement being such that there is considerable overlap between the electrodes of the two sets so that the oscillations are highly damped by the Foucault currents generated. The cones A, B are cut along their generators to form the two sets of electrodes A', A2, A3, A', and B', B2, B3, B4, the relative positions of which are shown in Fig. 2. The oscillations pass from a to b along the zigzag path indicated in dotted lines. A hand-wheel V is provided with a nut engaging the screwed spindle T, for varying the length of the gaps by adjusting the position of the cone B. For grinding the electrodes, the cone B is lowered into contact with the cone A and then rotated. For cooling the electrodes, air flows into the case S through the orifice O1 and escapes through the orifices O2. A number of these multiple spark-gaps may be arranged in series, means being provided for adjusting all the cones simultaneously. According to the Specification as published under Section 91 (3) (a), plate electrodes in staggered rows may be employed, or the electrodes in each set may be arranged as cylinders. A number of multiple spark-gaps may be arranged in parallel. When the cones are cleaned by grinding together, a pad may be placed between the cones. This subject-matter does not appear in the Specification as accepted.