Abstract: Two standard momentary pushbuttons mounted in spaced-part relation on a common support normally directly actuate two switch units, respectively. A maintaining and interlocking attachment is interposed between the pushbuttons and switch units so that when one pushbutton is depressed, it will be maintained depressed and will restore and lock out the other pushbutton so that it cannot be depressed simultaneously. This is done by mounting a plurality of spacer rods between the pushbuttons and their associated switch units to provide space for a bracket secured therein and mounting a dual-spring-biased center-pivoted bistable toggle mechanism having a pair of driven pins, one for each pushbutton. A pair of push-levers are clamped to the standard washer-like drive plates of the respective pushbuttons and are provided with push-flanges and elongated drive slots.

Abstract: An improved switch mechanism for controlling the actuation of a plurality of electrical switches by means of tablets of a musical instrument, such as an organ. The mechanism permits a plurality of tablets to be depressed simultaneously and releasably retained in the depressed position so as to maintain a selected actuation of switches such as for providing selected voicing circuits in an organ. The mechanism is arranged to cause an automatic release of any previously depressed tablet as an incident of the user depressing subsequently one or more tablets to the switch actuating position. The tablets may be biased to the switch releasing position with the mechanism permitting the biasing structure to return the tablets to the switch releasing position as an incident of such further tablet depression.

Abstract: The noise suppression contact of a keyboard with a row of pushbutton-operated slide switches consists of a flat U-shaped contact spring forming a double armed lever one arm of which is actuated by the stop slider and the other contacting a fixed contact. The pushbutton operators are mutually interlocked by the stop slides. The noise suppression contact assembly is activated momentarily during the change over from one desired switching mode of operation to another switching mode of operation thereby preventing disturbing "clicks" caused by the shorting of an amplifier input.

Abstract: A remote control comprised of three switches for selective operation of a multifilament incandescent lamp and an "off" switch to break a circuit completed by operation of any one of the three switches. Operation of the first of said three switches completes a circuit to a first filament providing the least light intensity, operation of the second switch completes a second circuit to a second filament to increase the light intensity, and operation of the third switch completes a third circuit to both the first and second filaments to obtain a maximum degree of illumination. Operation of the off switch immediately breaks any one of the three circuits.

Abstract: First and second switch blocks comprising a plurality of first and second push button switches respectively are connected together in parallelism and in mirror symmetry and are provided with first and second latch bars common to the first and second switches respectively. The switch blocks are held together by detachable connectors which, in turn, support pivotal levers. The levers engage the ends of the switch block latch bars and cause interlocking of any pushbutton switch or switches in the depressed position and unlatch any previously depressed pushbutton switch or switches in either the first or second switch blocks.

Abstract: A single pole circuit breaker module is constructed so that its housing is provided with frangible sections aligned with the pivot pins for the contact arm, the cradle and the operating mechanism latch. These pins are keyed to the elements mounted thereon and each pin is provided with a formation to engage a complementary formation projecting sideways from an auxiliary feature module. The latter includes one or more auxiliary devices. In the case of an auxiliary switch module, the switch thereof is connected to the contact arm pivot pin so that contact arm motion is transmitted to operate the auxiliary switch thereby indicating whether the circuit breaker is open or closed. In the case of an alarm switch auxiliary module, the switch thereof is connected to the pivot pin for the cradle whereby the tripping of the cradle is effective to operate the alarm switch.

Abstract: An interlocked push-lock push-button switch assembly of the type in which when one of the switch buttons each formed integral with an operating-bridging member is depressed, it is locked in pushed-down position so that the movable contacts are made into contact with the mating stationary contacts, but when another switch button is depressed, the switch which has been locked in position is released. An inverted U-shaped movable contact member with the movable contacts attached to the ends thereof is retained in position by a movable-contact-member retaining member formed integral with the operating-bridging member.

Abstract: An electrochemical cell circuit has vacuum interrupter cell by-pass switches provided in order to prevent the impurities in the environment, caused by leakage from the electrochemical cells, from interfering with the switch operation.

Abstract: A keyboard shift and shift lock and release mechanism consisting of two shift keyswitches and one shift lock keyswitch is provided by the interaction of cams molded on the actuating plungers of the keyswitches and a slide member on each keyswitch which carries a cam follower pin and is constructed so as to move along a straight line relative to its associated housing upon actuation of the associated plunger. The two shift keyswitches have one type of cam and the slide members for these two switches are coupled together by a removable metal rod while the shift lock keyswitch has a second type of cam and its slide member interacts with the slide member of one of the shift keyswitches which is positioned adjacent to it.

Abstract: A miniature switch assembly comprising a base member having a plurality of parallel finned projections, a pair of contact members each having a plurality of contact terminals being fixed on both sides of the base member, respectively, a plurality of lever wheels being disposed between the adjacent finned projections, and a housing having a plurality of partition walls for accommodating the base member with the contact members and the lever wheels, wherein the lever wheels each having conductive plate perform the switching action in a manner that the conductive plate slides over the contact terminals. A locking member is also provided for locking the lever wheels. Preferably, a dust cover is provided for protecting the switch assembly from dust or mechanical injuries.

Abstract: A plurality of miniature slide switches are arranged in parallel in a tub shaped common housing, the switches each have a raised actuator projecting toward the top of the housing which is contactable by a raised wedged surface portion on the underside of a closable housing lid to assure that the switches are fully thrown and will be locked in the desired operating state upon closure of the lid.

Abstract: A multiple switch in accordance with the present invention comprises a plurality of pushbuttons that are movable between an extended and a depressed position and are biased toward the extended position. The pushbuttons are paired and each pushbutton pair is associated with an individual lockout, a releasing-latching bar (RL bar) that is common to all of the pairs, and an individual releasing-nonlatching and releasing-latching bar (RNRL bar). Each pushbutton interacts with all three members when it is depressed.The lockout permits either pushbutton of the associated pair to be depressed individually but prevents both pushbuttons from being depressed simultaneously. As any pushbutton is depressed, the RL bar acts to release all pushbuttons previously depressed and latches the activated pushbutton in its depressed position.

Abstract: An electrical switch having a push button type actuator and a plurality of circuit-making type contact members, some of which are adapted to be momentarily moved by the actuator into contact with stationary electrical terminal members while other contact members are simultaneously initially slidably moved by the actuator into contact with yet another set of electrical terminal members and then adapted for independent slidable movement through a multitude of positions into contact with still other electrical terminals.