[Trade Journal]
Publication: The Electrical Engineer
New York, NY, United States
vol. 16, no. 285, p. 355, col. 1-2
TRADE NOTES AND NOVELTIES
AND MECHANICAL DEPARTMENT.
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INSULATION.
THE H. W. JOHNS MANUFACTURING CO., of 87 Maiden Lane, this city, have published a very attractive pamphlet, setting forth the claims made for their moulded mica, "Monarch" and " Vulcabeston" insulators. The little book contains 82 pages and is embellished with detail illustrations of railway line apparatus, lamp sockets, cut-outs, field magnet spools, commutator heads and rings, waterproof sheathing, etc.
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