Abstract: A disconnect switch includes a crossbar assembly having an arm at each of its ends which rotatably fastens the assembly to a frame for swinging motion around a pivot axis. Three movable contact assemblies are carried by the crossbar between a closed position in which their line side ends engage stationary contacts and an opened position in which their line side ends are disengaged. Stationary connectors aligned along the pivot axis engage the load side ends of the movable contact assemblies at all positions of the crossbar.

Abstract: An enclosed multipole fuse disconnect switch is constructed of a single molded base, a single contact carrier, and an overcenter spring powered toggle mechanism constructed solely of a coiled compression spring and a stamped sheet metal tongue which extends through an aperture in the contact carrier. The tongue is formed integrally with a pivot shaft through which operating forces are applied to the toggle mechanism. Each pole includes a U-shaped bridging contact constructed of spring metal and floatingly mounted in an aperture of the contact carrier.One end of the pivot shaft extends into a slot in the enlarged end of a bearing rivet that extends through the sidewall of the switch enclosure and is keyed to a manual operating member at one end thereof. The latter extends through a guide slot in an arcuate bracket outside the enclosure.

Abstract: A shielded contact slide switch is disclosed having two plastic dielectric parts, one of which parts houses the fixed electrical contacts, and the other of which parts moves relative to it and houses the bridging contact. Mating surfaces of the two parts are designed to seal off the contacts from environmental effects, and the actuator is defined on the movable part and has projecting portions to overlie a cavity or recess in the fixed part housing the fixed contacts regardless of switch position. The movable part also has projecting ears extending laterally into the side walls of the fixed part to restrict the sliding part to movement as dictated by the relative locations for the fixed and movable bridging contact. A spring return single pole double throw switch is disclosed but in place of the return spring another pole might be provided.

Abstract: A double pole sliding contact trigger switch is disclosed having auxiliary butt contact means for affording sequential actuation of a pair of switches in a single housing. Upon depression of the trigger, a double pole switch is closed by sliding bridging contactors to energize a portable tool motor. Upon further depression of the trigger, a single pole switch is closed by a butting bridging contactor to energize a solenoid in the tool.

Abstract: An articulated contact finger of very high voltage gasblast circuit-breaker. It is characterized in that the pin on which the finger is articulated is disposed between the contact piece and a spring which provides the force required at the contact point, a first support of the stationary articulation pin being situated between the articulation pin and the spring, said spring being disposed between said first support and a second support providing fixing means for the flexible connection connected to the contact point.

Abstract: A row of three stationary electric contacts is mounted on an insulating base for a metal housing in which a bridging contact carried by an insulating slider is movable lengthwise of the row from a position bridging the middle stationary contact and either of the end contacts to a position bridging the metal contact and the other end contact. When the bridging contact is moved into engagement with an end contact the slider also moves a metal grounding contact into engagement with the end contact that is not engaged by the bridging contact at that time, whereby the end contact engaged by the grounding contact is electrically connected by it to the metal housing which the grounding contact always engages.

Abstract: A telescoping disconnect switch for isolated phase bus has a cylindrical movable conductor having a plurality of individual contact assemblies each comprising a contact finger and an axially loaded spring fixedly attached thereto. The contact assemblies are circumferentially arranged about the movable conductor and are removably secured between a contact holder ring and a spring retainer ring. A plurality of stabilizer pads are symmetrically arranged around the circumference of the movable conductor between the contact fingers and are fixedly secured to the movable conductor to stabilize the contact assemblies and align the conductor as it moves to open and close the circuit.

Abstract: A switch housing covering an elongated base has a top wall spaced from a plurality of fixed contacts mounted along the base for engagement by a bridging contact carried by a slider inside the housing. The top wall of the housing is provided with a slot extending inwardly from one end and having a pair of side walls formed from downturned areas of the top wall, each of which is provided with an upwardly extending notch. A lever disposed in the slot normally extends above the housing, with the lower end of the lever provided with laterally projecting trunnions extending through the side wall notches. The lower end of the lever outwardly beyond the trunnions extends downwardly into engagement with the end of the slider for pushing the slider toward the opposite end of the base when the upper end of the lever is swung outwardly away from the underlying end of the housing.

Abstract: A manually operated electrical switch includes a first conductor and a second conductor. The second conductor is telescopically coupled to an electrical contact arranged to be spring biased against an opposing surface. The second conductor is attached to an electrical insulator and assembled in a housing so as to be pivotally movable over an arcuate path between a first position in which the first conductor is in electrical contact with the second conductor and a second position in which the first conductor is electrically insulated from the second conductor.

Abstract: An electrical contact material comprising a homogeneous, pressed and sintered mixture of from 85 to 90 percent silver metal powder, from 7.5 to 14.3 percent cadmium oxide powder, and from 0.50 to 3.0 percent zinc oxide powder, by weight, and having a weight ratio of zinc oxide to cadmium oxide content in the range from 0.05 to 0.25, is shown to display remarkably improved arc erosion and welding properties.

Abstract: A high speed switching device constructed in such a way that the casing is formed with a hollow chamber in its inside of the partition wall for separating the poles, and a runner is slidably provided in the hollow chamber, and the runner is made to operate by a lever and plate springs, and the runner is provided with two pieces of projecting elements, and the plate spring is sandwiched, and two pieces of engaging members are provided at a predetermined interval to make the lever engageable, and the plate spring is made to have length sufficient to curve in bow shape with a predetermined degree of arc circle and its both ends are fixed and installed on the upper wall and bottom wall of the hollow chamber by means of the pressure spring, and the runner is shifted in such a way that the lever is engaged with one engaging member and the plate spring is extended in straight condition and exceeds the opposite side slightly from the straight condition and exceeds the opposite side slightly from the straight conditio

Abstract: A relay assembly has a flexible contact blade mounted on a contact carrier through the use of non-conductive support blocks which permit flexing of the blade as it moves with the carrier, thereby causing a wiping action between the movable and stationary contacts within the relay.

Abstract: An electrical contact with a fixed conductor and a movable conductor, comprises a plurality of plate springs, a plurality of contacts, the plate springs and the contacts being mounted into a single unit with an arrangement of those members in a substantial orthogonal relation to each other. The opposite ends of each of the plate springs being supported so as to provide an arrangement of contacts spaced at a fixed interval.

Abstract: Discloses a switch for use with a circuit board for simultaneously closing one or more circuits. A switch cover mounts therein a reciprocable member whose permanent strip magnet carries one or more contact elements for circuit completion. The circuit board carries another permanent strip magnet. The strip magnets have consecutive, alternating polarities such that, in the closed position of the switch, the strip magnets have opposite attracting polarities, and such that, in the open position of the switch, the strip magnets have the same and repelling polarities.

Abstract: An arcing contact for a high current capacity switch having a pair of switch members in sliding face-to-face engagement is formed from a set of resilient laminations that shunt the switch members as the switch makes on closing or breaks on opening. One end of the set of laminations is mounted on a face of one of the switch members, usually a blade, and the other end of the set of laminations is angled so that the end surfaces or tips bear against a face of the other switch member, usually a termination, when the arcing contact shunts the switch members. While in this position, a deflection of the laminations develops a spring force that urges the tips of the laminations into contact with the termination. The tips are inwardly bevelled with respect to the face of the termination and lie in a common plane so that during electrical connection they are in a substantially parallel relationship with the face of the termination, at substantially the same pressure.

Abstract: A circuit interrupter characterized by a pair of separable contacts one of which is movable with respect to the other, the movable contact being mounted on an elongated conductor and extending through a tubular conductor with an annular space therebetween, an electrically conducting sleeve within the space and being composed of a resilient sheet-metal type material and having a corrugated configuration. The sleeve being disposed in the annular space in a compressed condition such that the outer ridges are in electrical contact with the tubular conductor and the inner ridges are in contact with the elongated conductor, and a body of resilient material between the tubular conductor and each pair of outer ridges of the conducting sleeve.

Abstract: A switch or circuit breaker that provides a high contact pressure when closed and provides a reduced and automatically regulated contact pressure during opening and closing. In one embodiment a pair of contacts is mounted opposite one another and one of the contacts is carried at one end of a pivotably mounted lever so that it can move towards and away from the other by a movement of the other end of the lever. A fluid operated cylinder arrangement is provided to move the switch blade from a first disengaged position to a second engaged position between the blades. The cylinder is mounted on a mechanical linkage so that the linkage is deflected in accordance with the resistance of the blade to movement, and the deflection of the linkage moves the lever tending to decrease contact pressure. A balance is reached between contact pressure and the blade movement tending to maintain a constant and reduced contact pressure during opening and closing.

Abstract: An electric contact device provided with a composite annular contact member and a contact pin cooperating therewith. This contact member comprises a metal holder with a cavity and contained in the latter a circularly bent stack of V-folded contact plates and a stabilizing ring for said plates. Said ring extends through slots of all contact plates and said slots are formed in the narrower inwards extending parts of the contact plates. Said narrower plate parts are adapted to contact with their free contact edges the contact pin and the outwards extending broader parts of the contact plates are with their free contact edges in permanent contact with the holder.