Double side air break disconnecting switch

A double side air break disconnecting switch comprising,

• a base formed from an elongated structural support;
• a first insulator, which is stationary, connected in proximity to one end of said base;
• a second insulator, which is stationary, connected in proximity to the other end of said base;
• a third insulator, supported for rotary movement from said base intermediate said first and second insulators;
• an elongated blade rigidly secured intermediate its ends to said third insulator for unitary movement therewith;
• a pair of jaw contacts, one being connected to each of said elongated blade and each defining a bifurcated portion;
• a pair of contact bars, one supported on said first insulator and the other supported on said second insulator disposed to be engaged by said pair of jaw contacts when said third insulator is moved to a closed position completing an electric circuit through the disconnecting switch;
• a pair of terminal assemblies, one supporting each of said contact bars;
• and, each of said terminal assemblies comprises:
• a pair of spaced apart pivot arms having one set of ends pivotal about a fixed axis and having said contact bar disposed between the other set of ends;
• said pair of spaced pivot arms being pivotable between an open position and a closed position, wherein said contact bar is in high pressure engagement with the bifurcated portion of the associated jaw contact;
• a latch for locking said pair of spaced apart pivot arms in the open position;
• and,
• latch release means operated by said jaw contact for releasing said latch when said jaw contact is fully disposed around said associated contact bar.

A high voltage electric switch comprising:

• an elongated stationary insulator;
• an elongated rotatable insulator, spaced apart from said stationary insulator, rotatable around its longitudinal axis between a closed position and an open position;
• a contact terminal which comprises a contact bar supported on said stationary insulator;
• an elongated switchblade rigidly connected to said rotatable insulator for unitary movement therewith having at least one free end;
• said switchblade is connected to said elongated rotatable insulator so there is no relative movement therebetween;
• and,
• a jaw contact secured to the free end of said elongated blade having a bifurcated portion which fits on and makes electrical contact with the contact bar of said contact terminal when said rotatable insulator is rotated around its longitudinal axis to the closed position and which is spaced apart from said contact terminal when said rotatable insulator is in the open position.

A high voltage electric switch comprising,

• a stationary insulator;
• a rotatable insulator, spaced apart from said stationary insulator, rotatable between a closed position and an open position;
• a contact terminal which comprises a contact bar supported on said stationary insulator;
• an elongated switchblade securely connected to said rotatable insulator for unitary movement therewith having at least one free end;
• a jaw contact secured to the free end of said elongated blade having a bifurcated portion which fits on and makes electrical contact with the contact bar on said contact terminal when said rotatable insulator is rotated to the closed position and which is spaced apart from said contact terminal when said rotatable insulator is in the open position;
• and wherein said contact terminal further comprises:
• a pair of spaced apart pivot arms having said contact bar disposed between one end thereof and the other end being pivotable around a fixed axis;
• said pivot arms being movable between an open position, with said contact bar not in high pressure engagement with said jaw contact and a closed position, with said contact bar in high pressure engagement with said jaw contact;
• and,
• a latch for locking said pair of spaced apart pivot arms, between which said contact bar is supported in the open position until said jaw contact is fully inserted around said contact bar.

A high voltage electric switch comprising:

• a first vertically disposed high voltage insulator;
• a second vertically disposed high voltage insulator spaced apart from said first vertically disposed high voltage insulator, supported for rotary movement around its vertical axis;
• an elongated electrically conductive switchblade connected to said second vertically disposed high voltage insulator, for unitary movement therewith and for no relative movement therebetween, supported for arcuate movement in a horizontal plane only;
• a contact bar, which is elongated and supported from said first high voltage insulator with its longitudinal axis in a horizontal position;
• and,
• a jaw contact, having a bifurcated portion which engages said contact bar when the high voltage switch is closed, secured to the end of said elongated electrically conductive switchblade.

An electric switch comprising:

• an elongated base;
• a pair of stationary insulators supported at opposite ends of said base;
• a rotatable insulator supported on said base between said pair of stationary insulators for rotary movement around an axis generally perpendicular to said base;
• an elongated switchblade rigidly secured intermediate its ends to said rotatable insulator for unitary movement therewith;
• a pair of contact bars, one attached to each of said pair of stationary insulators;
• a pair of jaw contacts, each having a pronged portion, one connected to each end of said elongated switchblade;
• and,
• means for rotating said rotatable insulator between a closed position, wherein the jaw contacts at each end of said elongated switchblade engage one of said pair of contact bars with the prongs disposed around the engaged contact bar, and an open position, wherein said jaw contacts at each end of said elongated switchblade are spaced apart from said contact bars.

An electric switch comprising:

• a terminal contact assembly;
• a jaw contact assembly, comprising two separated jaw members with a bight portion extending therebetween, movable between a closed position, engaging and forming electrical contact with said terminal contact assembly, and an open position, separated from said terminal contact assembly;
• and,
• said terminal contact assembly comprises:
• a contact bar;
• a pair of pivot arms, spaced apart and having one pair of ends pivotal about an axis and said contact bar disposed between the other pair of ends, pivotal between a first position, disengaged from high pressure engagement with said jaw contact assembly, and a second position in high pressure engagement with said jaw contact assembly;
• and,
• latch means connected to said pair of pivot arms for latching them in the first position until said contact bar is fully disposed in said jaw contact assembly in proximity to the bight portion.

A contact assembly for an electric apparatus comprising:

• an elongated contact bar;
• support means for supporting said elongated contact bar for arcuate movement of its longitudinal axes about a fixed axes;
• a U-shaped movable contact having two leg portions connected by a bight portion movable between an open position, separated from said elongated contact bar, and a closed position, engaging said contact bar;
• said elongated contact bar movable by said U-shaped contact between a first position, not in high pressure engagement with said U-shaped contact, and a second position, in high pressure engagement with the legs of said U-shaped contact;
• latch means for latching said elongated contact bar in the first position;
• and,
• latch release means operable by said U-shaped contact for releasing said latch means when said elongated contact is fully within said U-shaped contact in proximity to the bight portion.