Illinois Society of Architects · Chicago · leaf 375
J This new and radically differentShallow Flush Toggle Switch re-cently perfected by Hubbell isnotable for many individual fea-tures and improvements. HUBBELL ALL BAKELITE ENCLOSED Toggle Switches Electrically and MechanicallyPerfect in Design—Approved A up inother … RADICALLY new form of contactspring scientifically designed so thattwo different rates of vibration are setthe spring; one tending to counteract theThus recoil is practically eliminated inthe ends of the con-tact spring when thesolid metal contactblade strikes be-tween them. As aresult, burning…
Architecture · Building · Architects
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