US1723876A

US1723876A - Electric-switch installation

Info

Publication number: US1723876A
Application number: US727831A
Authority: US
Inventors: Samuel W Mauger
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1924-07-23
Filing date: 1924-07-23
Publication date: 1929-08-06
Anticipated expiration: 1946-08-06

Description

Aug. 6, 1929. s. w. MAUGER ELECTRIC SWITCH INSTALLATION Filed July 23, 1924 Ir-nvenfitor- Samuel. VV. mauger I T HLs Attor gy Patented Aug. 6, 1929.

UNITED STATES PATENT OFFICE.

SAMUEL W. MAUGER, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELEC- TRIO COMPANY, A CORPORATION OF NEW YORK.

ELECTRIC SWITCH INSTALLATION.

Application filed July 23,

My invention relates to electric switch installations of the type in which a plurality of similar switches are arranged one above the other, and the object of my invention is to provide improved interconnecting means for the simultaneous operation of all of the switches.

My invention will be better understood from the following description taken in connection with the accompanying drawing, and its scope will be pointed out in the appended claims.

1n the drawing, Fig. 1 is a front view of a three phase switch arrangement shon ing three similar switches arranged on separate floors of a building and adapted for simultaneous operation; Fig. 2 is a side view of the same; and Fig. 3 is a detail.

Referring to the drawing, 1 represents a vertical wall of the building which houses the switch apparatus; 2, 3 and 4 represent successive floors of the building, and 5, 6 and 7 represent intermediate partitions. Each of the

individual switches

8, 9 and 10 is mounted upon a separate floor, the three switches being arranged in vertical alinement with each other. These switches may be of any suitable type, the particular switches illustrated by way of example being a type in common use having main contacts 12, bridging conducting

members

13 and 14, and secondary contacts which are contained in explosion chamber 15. Opening of the switches is effected by an upward movement of the movable contacts thereof. On the top floor 2 is located the switch operating mechanism, a portion only of which is shown at 17, namely that for obtaining a straight line movement of the operating rod. The main operating rod or pipe 18 extends down through the floor 2 to the cross-head 19 of switch 8. From the central portion of this cross-head an insulating rod 20, preferably of wood, extends down through the partition 5 to the

bridging members

13 and 14. Secured to opposite ends of the cross-head 19 are rods or pipes 21 which also pass down through the partition 5 and through the floor 3 to the cross-head 22 of switch 9. To the central portions of this cross-head is secured an insulating rod 23 which like the rod 20 passes through the intermediate partition 6 in this case, and is secured to the bridging members of switch 9. From the cross-head 1924. Serial No. 727,831.

22 the rods 21 continue on down through partitions 6 and floor 4: to the lastcrosshead 21 to which they are suitably secured. The bridging members of the lower switch 10 are operatively connected to the crosshead 24 by an insulating rod 25 as in the switches already described. \Vhere the rods 21 pass through the floors and parti tions, guide sleeves 2S and 29 respectively are employed and between these guide sleeves extend insulating sleeves 30 which serve to shield and insulate the operating rods where they pass through the switch compartments. The sleeves 30 are shown adapted to connect slidably at their upper ends with portions of the guiding sleeves 29 in order to compensate for variations in distances between floors and partitions.

\Vhile I have shown and described the operating mechanism as located above the several switches, it will be obvious that the arrangement may be reversed if desired and the operating mechanism located below the switches.

It will be seen that by this construction all three

switches

8, 9 and 10 may be actuated simultaneously by the operating mechanism through the one main operating rod 18 which for mechanical reasons is preferably metallic. Also that while the operating connection to the current carrying bridging members of each switch is an insulating rod in accordance with the usual construction, the operating connections between switches, which for mechanical reasons are also preferably metallic, are spaced laterally of the switches and sufficiently removed from the current carrying members to avoid danger of short circuits or sparkovers to ground.

The three

switches

8, 9 and 10 may respectively control the circuits of the three conductors of a three phase system. The phases are thus isolated from each other. The arrangement may be duplicated for as many three-phase circuits as desired as is well known in the art.

Vhat I claim as new and desire to secure by Letters Patent of the United States, is:

1. In combination, a plurality of switches arranged in vertical alinement, an operating mechanism therefor, and means for interconnecting said mechanism with the movable elements of said switches for simultaneous operation thereof comprising a plurality of vertical rods extending on opposite sides of said switches, cross heads connecting the rods and means connecting the cross heads with the movable elements of the respective switches.

2; In combination, a plurality of switches arranged in vertical alinement, a common operating mechanism therefor, and means operatively connecting said mechanism with said switches comprising a cross head for each switch, spaced rods secured to the ends thereof and arranged on opposite sides of said switches, and rods connecting the movable members of the switches with intermediate portions of the respective cross heads.

3. In combination, a plurality of switches arranged one above the other, a common operating mechanism therefor, and means connecting said. operating mechanism with the movable elements of said switches, said means comprising a cross-head for each of said switches, an insulating rod connecting each cross-head with the movable elements of its respective switch, and spaced rods arranged on opposite sides of said switches and connected to the ends of said crossheads. r V

4. In an isolated phase switch installation, a plurality of switches mounted on separate floors in vertical alinement, common operating means mounted above the uppermost switch, means connecting said' operating means with the movable members of said switches comprising rods extending vertically on opposite sides of said switches and through certain of said floors, guide sleeves in said floors for said rods, and shields for said rods attached to said guide sleeves.

In witness whereof, I have hereunto set my hand this 22nd day of July, 1924.

SAMUEL N. MAUGER.