Miscellaneous sparking devices for internal-combustion engines in which a current of electricity of low electromotive force is employed, thus necessitating the use therewith of electrodes normally out of contact with each other and which must be brought into contact and separated to produce a spark, as in the following make-and-break subclasses of electrical igniting devices, and subordinate and auxiliary devices designed for use with and to form a part of such an igniting device and incapable of use in the manner contemplated, in other relations, the device in question in either case not coming within the terms of the definition of some one of the following sparker subclasses.
