Patent:  GB191514382

Improvements in or relating to the Contact Breakers of Induction Coils

 

 14,382. Codd, M. A. Oct. 11. Electro-magnetic interrupters.-The free end of the trembler blade c of an induction coil vibrates between stops or buffers e of india-rubber or other resilient material so spaced as to limit its movement to an extent sufficient to enable the trembler to produce a high note suitable for wireless-telegraphy signalling in connexion with aeroplanes. The stops are adjustably mounted on a post e<1> and secured in place by screwed washers e', an additional washer being placed between the stops. The end of the trembler may also carry an adjustable weight f.
 

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