US1606751A

US1606751A - Disconnecting switch

Info

Publication number: US1606751A
Application number: US512180A
Authority: US
Inventors: Herbert J Crabbs
Original assignee: Westinghouse Electric and Manufacturing Co
Current assignee: CBS Corp
Priority date: 1921-11-02
Filing date: 1921-11-02
Publication date: 1926-11-16
Anticipated expiration: 1943-11-16

Description

Nov. 16, 1926. 1,606,751

H. J. CRABBS DISCONNECTING SWITCH Filed Nov. 2, 192] 4 Sheets-Sheet 1 WITNESSES: INVENTOR 6g, @J Wax/g fierberfi O'dbb;

M BY

ATTORNEY Nov. 16 1926. 1,606,751

H. J. CRABBS DISCONNECTING SWITCH Filed Nov. 2, 1921 4 Sheets-Sheet 2 31 1'7 WITNESSES: INVENTOR v ATTORNEY Nov 16 1926. 1,606,751

H.J.CRABBS DISCONNECTING SWITCH Filed Nov. 2, 1921 4 Sheets-Sheet 5 ATTORNEY Nov. 16 1926. 15%,?512

H. J. CRABBS DISCONNEGTING SWITCH Filed Nov. 2, 1921 4 Sheets-She-et 4.

WITNESSES: 'NVENTOR ATTORNEY Patented Nov. 16, 1926.

UNITED STATES rarsnr Fries.

HERBERT J. CRABBS, OF EPITTSBURGI-I, PENNSYLVANIA, ASEEIGNGR TO WESTINGHOUSE ELECTRIC & MANUFACTURING GOMPAIJY, A

CGEPGEATIGN OF PENNSYLVANIA.

DISCONNEOTING S'WITCH.

Application filed November 2, 1921.

brought into proper alinement therewith and inaccuracies of installation compensated for.

Another object of my invention is to simplify the structure and operation of disconnecting switches and to provide means for preventing damage to the stationary contact members by reason of the impact of the movable contact member.

As shown in the accompanying drawing,

Figure 1 is a view, in side elevation, of a switch embodying my invention;

Figs. 2 and 3 are fragmentary views taken respectively from the left-hand side and the right-hand side of Fig. 1; 1

Figs. 4 and 5 are enlarged views in side elevation and bottom plan, respectively;

Fig. 6 is a view, partially in elevation and partially in section, of one of the stationary contact members;

Figs. 7 and 8 are detail views of a supporting bracket for the jaw members; 7

Figs. 9 and 10 are detail views of one of the contact-supporting blocks;

Fig. 11 is a plan view of another of the contact-supporting blocks; and

Figs. 12 and 13 are detail views of the bracket which I employ for supporting the devices of Figs. 9 and 11.

My invention is shown as used in connection with a disconnecting switch 14 that is employed to open and to close the circuit through a circuit breaker 15 that may be of any desired type. The disconnectingswitch, as ordinarily used, closes the circuit through

terminals

16 and 16,

bridging members

17 and 18, break jaw structure 19, breaker 15, break aw structure 20, bridging member 21 and terminal member 16. V

The

bridging members

17 and 21 are supported from the under side of a panel 24, through insulating

pillars

25 and 26. The insulating pillars are provided, as shown more clearly in Fig. 4, with

base'portions

27 and 28, respectively, that serve as sup- Serial No. 512,180

ports for

bracket members

29 and 30, respectively.

The bracket 29 serves both as a hinge jaw for the bridging member 21 and as a support for

break jaw members

31 and 32, with which the ends of the

bridging members

17 and 18 coact. The bracket members 30 serve as hinge supports for the

bridging members

17 and 18 and'also support a break jaw 35,

with which the end of the bridging member 21 co-operates, and the terminals 16 and'16 J are connected to the

bracket members

30 and 29, respectively, and to the

break jaws

35, 31 and 32, as shown more clearly in Figsv 4 and 5. I

V In Figs. 7 and 8, I have shown the bracket 30 somewhat in detail, to illustrate more clearly the manner in which the

bridging structures

17 and 18 are pivotally supported thereon, holes 37 being provided for the reception of screws 38. (Fig. 5) for supporting the break jaws 35.

The bracket 29 is constructed similarly to the bracket 30 but provision need be made, of course, only for one bridging member to be pivotally supported thereupon.

As shown in Figs. 4 and 5, the bridging members close the circuit directly across the

terminal members

16 and 16, while, in the position occupied in Fig. 1, the current is directed through the circuit breaker 15. The circuit breaker 15 is provided with two

insulating pillars

39 and 40, upon which break jaws 19 and 20 are mounted. But one break aw member 20 is required on the pillar 39, for cooperation with the bridging member 21, while two break-jaw members 19 are required upon the insulating pillar 40 to co-operate with the two

bridging members

17 and 18.

The pillar 39 (Figs. 1 and e is provided 1 with a cap member 42, that serves as a base upon which a bracket 43 is mounted, and the bracket 43, in turn, supports a block 44.

The bracket 43 is provided, at its lower side,

through which extends a pair of bolts 50. These bolts also extend through holes 51 of the bracket 43, and, when loosened, permit the block 44 to be rotatably adjusted upon the bracket 43.

The block 44 is provided with an extended portion 53 that has openings 54 through which bolts may extend to secure break jaws 55 and fingers 56 thereto. A tapped hole 57 is also provided for the reception of a screw 58, which assists in maintaining an arc shield 60 in place.

The break-jaw structure 19 is mounted for rotatable adjustment upon its bracket 43 in the same manner as is the break-jaw structure 20, but, as shown in Figs. 9 and 10, thejaw-supporting block 61 is provided with, two

arms

63 and 64, for supporting two sets of break jaws 55 and fingers 56, so that the circuit from the terminal16 to the. breaker 15 may be bridged by either the bridging member 17' or the bridging member 18.

It will be seen that, by means of the arrangement illustrated, the circuit through the breaker 15 may be either made or broken without interruption of the main circuit across the terminals 16' and 16. WVith the parts in the position. shown in Figs. 4 and 5, the blade member 17, for instance, may be brought to the position shown in Fig. 1, and the blade member 21 then also brought to the position. occupied by it in Fig. 1. The blade member 18. may then be lowered, and the current thus diverted through the breaker 15 without interruption of the circuit. In cutting out the breaker 15, either of the

blades

17 or 18 may be raised to the position shown in: Fig. 4, and the other blades then also raised- The apparatus shown is employed in connection with exceedingly high voltages and is necessarily quite heavy, so that it is some, times diflicult to place the oil-breaker tank in proper alinement with the overhead switch structure. Such alinement is, of course, essential in order that the. bridging members 17 18 and 21 will make proper engagementv with the oil-breaker terminals By reason of my construction of. mountings for the terminals 19 and 20, it is possible to easily bring such terminals into prop.- er alinement, with the bridging members. If. it were found that the terminal 19 were not directly in position under the pillar in a transverse direction, the bracket 43 could be rotated slightly upon the base member 42, and the block 44 could be ro-j tatably adjusted upon the bracket, 48, ei ther. to the. right or. to the left, as required.

This doublev adjustment. not, only provides.

for a range of adjustment, transversely to ri i g. m mb rs ut; a so. p rmits. h break. jaws 55; to be brought int proper alinement with the path ofmovementof'the bridging members. The terminal member 20 may be also so adjusted.

The fingers 56 are preferably of spring steel and are curved outward slightly at their free ends, so that, if a bridging. member should fall from its raised, position, its movement would be retarded by the fingers, and excessive shock to the supporting structure for the break jaw members be avoided.

The bridging members are provided with latches 65, of any desired form, and sleet shields 60 and 66 also function in a manner common to devices of'this character.

Various modifications may be made with out departing from the spirit and scope of the invention, as defined in the accompany-- ing claims. 1

What I claim as my invention is:

1 In an electric switch, the combination with a movable contact member and a stationary cont-act member, of a rotatably adjustable support for the stationary contact member, and means whereby the stationary contact member may be rotatably adjusted upon the said support, the rotatable adjustments being made in approximately parallel planes.

2. In an electric switch, the combination with a movable contact member, of a stationary contact member, a base member, a

bracket member rotatably adjustable on the.

base member, and a stationary-contact-supporting member mounted for rotative movement eccentrically of the bracket.

In an electric switch, the combination with a movable contact member and a stationary contact member, of a base, a bracket rotatably supported upon" the base and having a portion extending radially thereof,

and a; contact-supporting block rotatably adjustable upon the said extended portion, the rotatablejadjustments beingmade in approximately parallel planes.

4. An adjustable contact member comprising a base. member, a bracket member provided with a plurality of curved slots, clamping means passing through the slots in said bracket member and engaging said base member, a supporting member provided with a plurality of curved slots mounted on said bracket member, clamping means passing through the slots in said supporting member and engaging said bracket member, and a break jaw mounted on said support ing member.

5. An adjustable contact member comprising a base member,abreak-jaw member, and an intermediate connecting means, said connecting means being provided with means. whereby said break jaw is, capable of; rotatable adjustment about said base memberin a plurality or planes extending in approximately the direction of the long'itudinal axis of: the base member.

'- 6; In an electric switch device, the 001m bination of a supporting member, a fixed contact, an adapter for supporting said fixed contact and means for securing said adapter to said member in various positions of angular adjustment.

7. In an electric switch device, the combination of an inclined supporting member, awasher secured thereto, a fixed contact, an adapter adjustable on said Washer for supporting said fixed contact, and means for clamping said adapter to said Washer in adjusted position.

8. In an electric switch device, the combination of a supporting insulator bushing, an annular member at the end thereof,

means for rigidly securing said member to said bushing, a fixed contact, an adapter for supporting said fixed contact in a-substantially vertical position and means for clamping said adapter to said member in various positions of angular adjustment.

9. In an electric switch device, the combination of an insulator bushing, an adapter carried thereby, a contact retainer and means for adjustably securin retainer to said adapter.

In testimony whereof, I have hereunto subscribed my name this 29th day of October, 1921.

HERBERT J. CRABBS or said contact