Standard and water-tight boxes for all electrical installation purposes (1908)
H. Krantz Manufacturing Co. · leaf 5
Side conduit damp open. luit clamp, NO BUSHINGS ANDNO LOCKNUTS ARKREQUIRED WITH THISTYPE OF BOX. The mly save the EXPE1 BUSHINGS AND LOCKNUTS, but SAVE 3IDERABLE LABOR in installing conduit. The MOST PERFECT MECHANICAL AND ELECTRK AL GROl 1 TIONS are secured by this box with the entire conduit I… … No. 401THIS CUT SHOWS THE GENERAL APPEARANCE OF THE CLAMP TYPE BRACKET BOX. They are^made of Sheet Steel and stamped in one piece. The lower por-tion of the clarnp is rigidly secured to the box by means of wings which areriveted on inside. The covers are fastened with 4 sen t< ears on insideof…
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-337-208.webp)
