1912 issue of Standard Wiring


Stephen Smith recently found several unusual self-tying wiring knobs in the attic of an old house. The top is embossed CLINCHD and the bottom has the recessed-   It is a well-made insulator and I would have expected it to have been a useful style that could have enjoyed some popularity. Unfortunately, the few specimens Stephen found are the only ones known. Hopefully someone will eventually  similarities to the 1927 Brookman patent (see September 2016 CJ), so perhaps the 


August 2017 19


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