The R. Thomas & Sons exhibit

The R. Thomas & Sons Company's Exhibit

A very striking and instructive exhibit on the main floor is that of the R. Thomas Sons Company, of East Liverpool, Ohio. The booth is beautifully draped in blue and white, and on a star surrounded by small porcelain knobs appears the name of the company in gold letters. They are exhibiting their well-known porcelain specialties, among which should be mentioned the triple petticoat insulator which is said to be puncture proof and the strongest insulator mechanically as well as the best electrically. The attendant at the booth shows the latter quality very strikingly by submitting insulators submerged partly in salt water and thoroughly drenched with it, to a potential of 60,000 volts, which is produced by a Westinghouse testing transformer. The current which at first leaks over the surface will jump a number of inches from one terminal to the other after the surface has become dry. These tests are made on glazed as well as unglazed insulators and all of them stand the test admirably. Besides these insulators, the company exhibit the "Boch Glaze Filled" high potential insulators, described in The Engineer, April 7. A miniature triple petticoat insulator is given away by the company as a souvenir.

Exhibit of R. Thomas & Sons.