within a sealed outer jacket so that portions of said separately jacketed electrical conductors are separable within said outer jacket to create a void when said conductors are energized simultaneously by an electrical current the disclosure also includes restoring means for returning the separated conductors to rest position and a method of expulsing solid or frangible material application_number US 42105389 A description referring to fig1 3 and 4 the reference numeral 11 designates an expulsive separation apparatus comprising a blanket 12 of thermo plastic material such as polyurethane polyethelyne and butadiene enclosing elongated continuous ribbon like conductor means 13 and 14 the conductor means 13 and 14 include ribbon portions 16 with intervening spaces 17 and top conductor means 13 is aligned generally with bottom conductor means 14 as is most apparent in fig4 each conductor means 13 and 14 comprise stacks of flat metallic continuous ribbons indicated generally by the reference numerals 18 and 19 respectively the ribbons 18 and 19 in the disclosed embodiment are three in number and range in thickness from 0 001 inches to 0 010 inches it is to be understood that although the ribbons of the present disclosure are fabricated of copper it is anticipated that other suitable electrical conductors may be substituted in addition the ribbon stacks 18 and 19 may comprise single or multiple layers each ribbon portion of each stack are joined as at 20 figure i and includes.