Switch module

Claim 1

A circuit selector switch module comprising in combination: A. a first essentially circular housing means having a plurality of spaced lever means support means located inward of said housing means periphery and further having readout window means at a circumferentially opposed position on said periphery to said support means; B. a second essentially circular housing means rotatably affixed to said first housing means whereby an essentially circular central chamber is formed within said housing means, said second housing means containing circumferentially located digit indicia means, said digit indicia means being so arranged and constructed as to register serially with said readout window means when either housing means is rotated; C. encoding circuit means mounted in said chamber between said first and second housing means, said encoding circuit means comprising a plurality of spaced standby and encoding circuit element means, and D. lever means having circuit contact means mounted thereon, said lever means being mounted in said second housing means, said lever means being so arranged and constructed as to allow radial movement with respect to said second housing means, one end of said lever means being in engaging position with said lever means support means when said lever means are moved in an inwardly radial direction in which position said circuit contact means are in contact with a section of said encoding circuit element means and when said lever means is moved in a radially outwardly position sAid end of said lever means is disengaged from said lever means support means and said circuit contact means are brought in contact with said standby circuit element means; whereby rotation of said housing elements is possible only when said lever means is disengaged from said lever means support means thereby said circuit contact means contact only the standby circuit element means during rotation.