Interlocking fuse and switch system for distribution of electric power

Claim 2

An interlocking fuse and switch system comprising: a support structure, a drawer slidable on said support structure, a fuse carried by said drawer, a switch having a switch blade pivoted on said support structure to one side of said drawer, contact means interconnecting said fuse and said switch blade, a fuse drawer rodlike locking link on said drawer in locked position reacting against said support structure to prevent opening of said drawer, a manually operable handle pivoted on said support structure for operating said switch blade between open and closed positions, a handle rodlike locking link connected at one end to said handle, means mounting said handle rodlike locking link for generally endwise translatory movement transversely of said fuse drawer rodlike locking link to prevent movement thereof to the unlocked position when said handle is in the switch closed position, and means for guiding the other end of said handle rodlike locking link for translatory movement as aforesaid.

Claim 3

The interlocking fuse and switch system according to claim 1 wherein: said switch includes a stationary contact for engagement by said switch blade, a ground switch blade is pivoted on saiD support structure and is arranged in closed position to ground said stationary contact, and ground switch rodlike link means between said switch blade and said ground switch blade for preventing closure of the latter when the former is closed.

Claim 4

The interlocking fuse and switch system according to claim 2 wherein lost-motion connecting means between said switch blade and said ground switch link means effects movement of the latter only after the former has pivoted to a predetermined position.

Claim 5

The interlocking fuse and switch system according to claim 2 wherein means between said handle and said ground switch blade prevent operation of said handle to close said switch blade when said stationary contact is grounded by said ground switch blade.

Claim 6

An interlocking fuse and switch system comprising: a support structure a drawer slidable on said support structure a fuse carried by said drawer, a switch having a switch blade pivoted on said support structure to one side of said drawer, contact means interconnecting said fuse and said switch blade, a fuse drawer locking link on said drawer in locked position reacting against said support structure to prevent opening of said drawer, a manually operable handle pivoted on said support structure for operating said switch blade between open and closed positions, and a handle locking link connected to said handle and cooperating with said fuse drawer locking link to prevent movement thereof to the unlocked position when said handle is in the switch-closed position, said handle locking link having a notch through which said fuse drawer locking link can move to unlocked position only when said handle is in the switch-open position.

Claim 7

An interlocking fuse and switch system comprising: a support structure a drawer slidable on said support structure a fuse carried by said drawer, a switch having a switch blade pivoted on said support structure to one side of said drawer, contact means interconnecting said fuse and said switch blade, a fuse drawer locking link on said drawer in locked position reacting against said support structure to prevent opening of said drawer, a manually operable handle pivoted on said support structure for operating said switch blade between open and closed positions, and a handle locking link connected to said handle and cooperating with said fuse drawer locking link to prevent movement thereof to the unlocked position when said handle is in the switch-closed position, said handle locking link having a notch through which said fuse drawer locking link can move to unlocked position only when said handle is in the switch-open position.

Claim 8

The interlocking fuse and switch system according to claim 5 wherein lost-motion connecting means between said handle and said handle locking link effects movement of the latter only after the former has pivoted through a predetermined extent.

Claim 9

The interlocking fuse and switch system according to claim 5 wherein said fuse drawer locking link has a laterally extending portion for overlying said handle locking link when said handle is in the switch-closed position to prevent opening of said drawer and is movable through said notch when said handle is in the switch-open position.

Claim 10

The interlocking fuse and switch system according to claim 5 wherein: a latch is pivoted on said support structure and is biased to interfit with said notch in said handle locking link to prevent movement of said handle from the switch-open position, and means on said fuse drawer locking link for engaging said latch to move it out of said notch when said drawer is closed and locked.

Claim 11

The interlocking fuse and switch system according to claim 8 wherein: said fuse drawer locking link has a laterally extending portion for overlying said handle locking link when said handle is in the switch-closed position to prevent opening of said drawer and is movable through said notch when said handle is in the switch-open position, and said laterally extending portion of said fuse drawer locking link is arranged to engage said latch and hold it in unlatched position when said drawer is closed.

Claim 12

An interlocking fuse and switch system comprising: a support structure, a drawer slidable on said support structure, a fuse carried by said drawer, a switch on each side of said drawer each having a switch blade pivoted on said support structure, contact means interconnecting said fuse and each switch blade, a fuse drawer locking link on said drawer in locked position reacting against said support structure to prevent opening of said drawer, a manually operable handle for each switch blade pivoted on said support structure for operating the respective switch blade between open and closed positions, and a handle locking link connected to each of said handles and cooperating with said fuse drawer locking link to pRevent movement thereof to the unlocked position when either of said handles is in the switch-closed position, each of said handle locking links having a notch through which said fuse drawer locking link can move to unlocked position only when both of said handles are in the switch-open position.

Claim 13

An interlocking fuse and switch system comprising: a support structure, a drawer slidable on said support structure, a fuse carried by said drawer, a switch on each side of said drawer each having a switch blade pivoted on said support structure, contact means interconnecting said fuse and each switch blade, a fuse drawer locking link on said drawer in locked position reacting against said support structure to prevent opening of said drawer, a manually operable handle for each switch blade pivoted on said support structure for operating the respective switch blade between open and closed positions, and a handle locking link connected to each of said handles and cooperating with said fuse drawer locking link to pRevent movement thereof to the unlocked position when either of said handles is in the switch-closed position, each of said handle locking links having a notch through which said fuse drawer locking link can move to unlocked position only when both of said handles are in the switch-open position.

Claim 14

The interlocking fuse and switch system according to claim 10 wherein lost-motion connecting means between each handle and the respective handle locking link effects movement of the latter only after the former has pivoted through a predetermined extent.

Claim 15

The interlocking fuse and switch system according to claim 10 wherein said fuse drawer locking link has a laterally extending portion for overlying said handle locking links when said handles are in the switch-closed positions to prevent opening of said drawer and is movable through said notches when they are in registry and said handles are in the switch-open positions.

Claim 16

The interlocking fuse and switch system according to claim 10 wherein: a latch is pivoted on said support structure and is biased to interfit with said notches in said handle locking links when they are in registry to prevent movement of said handles from the switch-open positions, and means on said fuse drawer locking link for engaging said latch to move it out of said notches when said drawer is closed and locked.

Claim 17

The interlocking fuse and switch system according to claim 13 wherein: said fuse drawer locking link has a laterally extending portion for overlying said handle locking links when said handles are in the switch-closed positions to prevent opening of said drawer and is movable through said notches when they are in registry and said handles are in the switch-open position, and said laterally extending portion of said fuse drawer locking link is arranged to engage said latch and hold it in unlatched position when said drawer is closed.

Claim 18

An interlocking fuse and switch system comprising: a support structure, a drawer slidable on said support structure, a fuse carried by said drawer, a switch on each side of said drawer each having a switch blade pivoted on said support structure, contact means interconnecting said fuse and each switch blade, a fuse drawer rodlike locking link on said drawer in locked position reacting against said support structure to prevent opening of said drawer, a manually operable handle for each switch blade pivoted on said support structure for operating the respective switch blade between open and closed positions, a handle rodlike locking link connected at one end to each of said handles, means mounting said handle rodlike locking links for generally endwise translatory movement in overlying and underlying relation to each other transversely of said fuse drawer rodlike locking link to prevent movement thereof to the unlocked position when either of said handles is in the switch closed position, and means for guiding the other ends of said handle rodlike locking links with respect to each other for translatory movement as aforesaid.

Claim 19

An interlocking fuse and switch system comprising: a support structure, a drawer slidable on said support structure, a fuse carried by said drawer, a switch on each side of said drawer each having a switch blade pivoted on said support structure, contact means interconnecting said fuse and each switch blade, a fuse drawer rodlike locking link on said drawer in locked position reacting against said support structure to prevent opening of said drawer, a manually operable handle for each switch blade pivoted on said support structure for operating the respective switch blade between open and closed positions, a handle rodlike locking link connected at one end to each of said handles, means mounting said handle rodlike locking links for generally endwise translatory movement in overlying and underlying relation to each other transversely of said fuse drawer rodlike locking link to prevent movement thereof to the unlocked position when either of said handles is in the switch closed position, and means for guiding the other ends of said handle rodlike locking links with respect to each other for translatory movement as aforesaid.

Claim 20

The interlocking fuse and switch system according to claim 15 wherein: each of said switches includes a stationary contact for engagement by the respective switch blade, a ground switch blade individual to each stationary contact is pivoted on said support structure and is arranged in closed position to ground the respective stationary contact, and ground switch rodlike link means between each switch blade and the respective ground switch blade for preventing closure of the latter when the former is closed.

Claim 21

The interlocking fuse and switch system according to claim 16 wherein lost-motion connecting means between each switch blade and the respective ground switch link means effects movement of the latter only after the former is pivoted to a predetermined position.

Claim 22

The interlocking fuse and switch system according to claim 16 wherein means between each hAndle and the respective ground switch blade prevent operation of the former to close the respective switch blade when the respective stationary contact is grounded by the respective ground switch blade.