| 摘要 |
<p>1,217,099. Arc electrodes. C. CONRADTY. 15 April, 1969 [16 Aug., 1968], No. 19144/69. Heading H1X. A negative carbon electrode for a D.C. arc lamp has a single core occupying at least oneeighth of the cross-sectional area and positioned eccentrically in the carbon body, i.e. when considered in cross-section, the centre of gravity of the core area does not coincide with that of the mantle area. The core and mantle may be of circular or non-circular, e.g. flattened, configuration. The construction is stated to eliminate instability at current loadings of 75-130 amps. at which arc contraction normally occurs.</p> |
