| "The IN-56 insulator
is a military version of the CD 115. They were produced under
government contract for the U. S. Army Signal Corps. A specification
dated April 1, 1942
obtained from Lapp shows they were made in porcelain. A specification in
August 21, 1941 also indicates the design of a porcelain version. The glass
version was produced by Owens Illinois in 1945. Both were made with threaded
steel pins with a detent for a wrench, for quick attachment to trees and
poles. US Army field wire was strung from these insulators."
"The August 21, 1941 specifications indicate that a suitable cement
compound should be used such as "Basolit, as made by the Nukem
Products, Co, Buffalo, NY, Portland Cement, or equal" be used to secure
the pin inside the insulator"
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