Switch assembly for gas tap assembly having cam operated leaf spring contacts and split housing cam detent stop

A switch for selective ignition of gas from a gas tap assembly having a rotatable gas tap spindle comprising first and second housing members which are securable together and which have a central aperture therethrough that receives said gas tap spindle therein, a rotatable cam having a cam member with a cam surface thereon, a central aperture in said rotatable cam for receiving said gas tap spindle, a locking means for locking said cam onto said gas tap spindle, and an extension segment in said rotatable cam narrower than said cam surface, first and second L-shaped contact members each having a terminal portion and a contact portion, the contact portion of one of said contact members being positioned to overlie the contact portion of said other contact member and both of said contact members being disposed to overlie said cam so that said cam surface and extension segment control the position of the lower contact portion with respect to the upper contact portion, and a stop member on one of said housing members for limiting rotation of said cam of a width which allows said extension segment to rotate past said stop member for a limited portion of the rotation of said cam during which said contact members are disengaged, with said cam surface being of a length such that said contacts are in engagement over substantially the remaining portion of rotation of said cam between its two extreme positions of rotation.