Nikola Tesla Books
160 HIGH FREQUENCY APPARATUS or dauber. Starting at the center of the foil sheet and carrying the rubbing process toward the edges with a circular motion, the workman will be able to force the foil into what is practically absolute contact with the glass, and at the same time cause the surplus of varnish to exude from the edges. The plate is then turned and coated on the other side in exactly the same manner; the process is repeated with each of the thirty plates in each of the four units until the 120 plates have been coated. The lot may then be laid aside to dry in a warm room for several days. When this has been accomplished, each plate is to have its edges dipped into melted beeswax to a depth of 1½ inches in order that the edge of the tinfoil on both sides may be thoroughly coated with the wax. This will quite prevent the corona or brush losses so frequently noted with glass plate condensers. The rack in which the plates are to be mounted may next claim our attention. Its construction may be noted in Fig. 15, which gives a perspective view of the complete unit. The reader will see that the support comprises a C Fig. 15. One section of condenser mounted in its case Fig. 16.-Spring connector and cord for condenser
