Electrical switch for model railroad track switch

Claim 1

AN ELECTRICAL SWITCHING UNIT COMPRISING: A TUBULAR HOUSING HAVING A PAIR OF OPEN ENDS; A BASE HAVING A PAIR OF SPACED ELECTRICAL TERMINALS AND AN ELECTRICALLY CONDUCTIVE CONTACT ELEMENT MOVABLE FROM A FIRST POSITION OUT OF BRIDGING RELATIONSHIP TO SAID TERMINALS TO A SECOND POSITION IN BRIDGING RELATIONSHIP THERETO, SAID TERMINALS BEING ADAPTED TO BE COUPLED TO A SOURCE OF ELECTRICAL POWER AND TO AN ELECTRICAL OPERABLE DEVICE FOR ELECTRICALLY ACTUATING THE LATTER WHEN SAID ELEMENT IS IN SAID SECOND POSITION; MEANS RELEASABLY MOUNTING SAID BASE ON SAID HOUSING WITH SAID ELEMENT AT ONE END THEREOF THERE BEING A PAIR OF SLOTS IN SAID HOUSING, ONE OF SAID SLOTS EXTENDING LONGITUDINALLY OF THE HOUSING FROM SAID ONE END AND THE OTHER SLOT EXTENDING TRANSVERSELY OF THE HOUSING FROM SAID ONE SLOT IN SPACED RELATIONSHIP TO SAID ONE END, SAID MOUNTING MEANS INCLUDING A PROJECTION SECURED TO AND EXTENDING LATERALLY FROM THE BASE, SAID BASE BEING MOVABLE INTO SAID ONE END OF THE HOUSING TO MOVE SAID PROJECTION INTO SAID ONE SLOT UNITL THE PROJECTION IS ALIGNED WITH SAID OTHER SLOT, SAID BASE BEING ROTATABLE RELATIVE TO SAID HOUSING TO MOVE SAID PROJECTION INTO SAID OTHER SLOT WHEN SAID PROJECTION IS ALIGNED THEREWITH TO THEREBY RELEASABLY SECURE SAID BASE TO SAID HOUSING; AN ACTUATOR SHIFTABLY MOUNTED WITHIN THE EXTENDING LONGITUDINALLY OF SAID HOUSING AND TEMINATING ADJACENT THE OPPOSITE END THEREOF, SAID ACTUATOR BEING COUPLED WITH SAID ELEMENT AND DISPOSED FOR MOVING THE SAME TO SAID SECOND POSITION WHEN SAID ACTATOR IS MOVED TOWARD SAID ONE END OF THE HOUSING; AND AN ELECTRICALLY ACTUATED LIGHT SOURCE WITHIN SAID HOUSING AND ADAPTED TO BE COUPLED TO A SOURCE OF ELECTRICAL POWER, WHEREBY LIGHT FROM SAID SOURCE MAY BE VIEWED THROUGH SAID OPEN OPPOSITE END OF THE HOUSING.