Improvements in and relating to electric cut outs or fuses

摘要

359,376. Arc rupturing in fusible cutouts or switches. ALLSOP, G., Arley, Rushley Road, Dore, Derbyshire, and SMITH, P. B., Green Mount, Stamford Road, Bowdon, Cheshire. Nov. 24, 1930, No. 18206/31. Divided on 351,497. [Class 38 (i).J To prevent or suppress arcing in fuses, circuit breakers, &c. the following materials are employed : Potassium-permanganate, manganese-dioxide, potassium chlorate, baryta, sodium-peroxide, leadoxide, or mixtures of any of these substances. When the fuse blows oxygen is liberated and combines with the metallic vapour to form compounds having low conductivity.