Addyman, Frank Thornton · London : Scott, Greenwood & co. · leaf 100
n on the contact spring, the contacts are separated.At the break the weight flies back under the action of thespiral. This has the same effect as the Vril in prolonging thetime of contact, thus giving a spark of given length with lessexpenditure of primary current. It may be objected that a longer… … Fig. 24.—The Bowron Break. The second form, used for larger coils, and capable oftaking a very powerful primary current, is much more com-plicated. It is shown diagrammatically in Fig. 24. A is abrass standard, which supports three adjustable screws. B is acontact spring, which presses the platinum…
X-rays
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