US1743652A - High-tension switch - Google Patents

Description

Jan. 14, 1930. T; BOCEK 1,743,652 HIGH TENS-10N SWITCH Filed oct. 6, 1926 Patented Jan. 14, 1930 UNiTED STATES N PATENT ori-*Ica i TOMAS IBOCEK, OF BROOKLYN, NEW YORK, ASSG-NOR 0F ONE-HALF TO ROBERT V.

-DUNBAR, OF BOUNDBROOK, NEW JERSEY l HIGH-TENSION SWITCH This invention relates to electrical switching apparatus of a type particularly adapted for use with high tension power lines.

The objects of this invention include the provision of an improved, durable, eiicient,

and relatively simple high tension double disconnecting switch and associated mechamsm. Y

Further and more specific objects, features 10 and advantages will more clearly appear from the detailed description given below taken in connection with the accompanying drawings which form a part of this specification.

Inl the drawings, Fig. 1 is an elevational view showing the invention in one of its embodiments with the high tension disconnecting switches in their closed circuit positions, the switches in this instance serving to connect an oil circuit breaker into a high tension line.

Fig. 2 is a view similar to Fig. 1, but showing the switches in their open circuit positions.

Fig. 3 is an elevational view corresponding to Fig. 1, but showing a modified form of construction embodying the invention in certain of its phases; and

ing the switches in their open circuit positions.

Referring to Fig. l, high tension line terminals are indicated at 10 andrll. The line terminal 10 is electrically connected to aswitch contact 12, while the line terminal 11 is electrically connected to a switch blade member 13. The switch contact 12 and the switch blade 13 respectively are arranged to cooperate with a movable switch blade member 14 and a movable switch contact member 15.

The contact 12 and the switch blade member 13 respectively are mounted upon insulator columns 16 and 17 dependingy froma i frame structure 18. VThe switch blade member 14 and the Contact member 15 may be respectively fixed upon insulator columns 19 and 20, which in turn are mounted upon a rockable frame 21. The frame 21 may comprise a pair of rock arms 22 and 23, each pivoted at its center upon rock shafts 24 and 25 Fig. 4 is a view similar to Fig. 3, but show- Application filed October 6, 1926. Serial No. 139,767.

respectively. These rock ishafts may be mounted in suitable bearings supported upon the frame structure 18. The ends of the `members 22 and23 are pivotally connected to insulator supporting members 26 and 27 t0 which the insulator columns 19 and 20 respectively aresecured. The members 22, 23, 26 and 27 together serve to form a parallelogram of variable shape, as indicated.

One of the rock shafts (in this instance shaft 24) may be provided with an operating lever 28. A link member 29 may be pivotally connected to lever 28, and also to one arm of a bell crank member 30 to the other arm of which a connecting link 31 is attached. The link 31 preferably extends to a location accessibleto the operator and is provided with a manually operable lever 32 pivoted as at 33 to the frame structure. When the hand lever 32 is turned downwardly from the position shown in Fig. 1, the link 31, bell crank member' 30, link 29 and'lever member 28 will all be actuated, thus resulting in the actuation of the rock shaft 22. This motion causes the parallelogram to be altered in shape with a consequent actuation of the insulator columns 19 and 20, together with the switch blade 14 and contact member 15 respectively.

It will be noted that this actuation of the switch will cause the insulator columns 19 and 20 which are mounted in parallelism to also be moved vertically in parallelism, but in opposite directions respectively for simultaneously opening the line circuit at two points, namely between. the contact 12 and 85 switch blade 14 and between the contact l5 and switch blade 13. It will be further noted that theparts of the parallellogram frame member 2l, together with the insulator columns 19 and 20, are constantly and sub- 90 stantially evenly balanced in respect to the rock shafts 24 and 25 andaccordingly the switches are not subject to unintended operation and the possibility of accidental movement ofthe switch parts in emergencies 9 or otherwise is substantially minimized; Also, inasmuch as insulator columns for high tension lines are necessarily of substantial weight, this arrangement which provides one insulator .column as a counterpoise for an- 100 columns are not subject to substantial bend.

ing strains or breakage, even under severe operating conditions as when the operating parts are frozen or corroded or have from other causes become difficult to operate. Since the insulators are constantly maintained in their vertical positions, the insulator petticoats are always in position to shed water, snow, or dirt particles, thus keeping the insulating surfaces in a'high state of efficiency.

The switch apparatus embodying this invention-is particularly adaptable for association with an oil circuit breaker or other high tension electrical device, as indicated at 34. It will be noted that the frame structure 18 may be readily built to stra-ddle the device 34 as shown in the drawings. Insulated terminals are indicated at 35 and 36 for the device 34. Opening of the two switches serves to disconnect both these terminals of the oil circuit breaker from the line wires. The switch blade member 14 and switch contact l5 respectively are electrically connected with the terminals 35 and 36 by flexible conductors 37 and 38 supplemented by hinged guide rods as at'39 and 40 respectively. The flexible conductors may be soldered or otherwise fixed at their ends to provide a continuous good electrical connection, whereas the hinged guide rods control the positions of the flexible conductors within narrow limits. The liexible conductors are thus retained` against vibration and kept from short circuiting on one another or from grounding upon the adjacent parts.

In the modified form of construction shown in Figs. 3 and 4 line terminals are indicated at 41 and 42 supported respectively by insu'- lator columns 43 and 44, the insulators in turn being mounted rigidlyy upon a suitable frame struct-ure 45. An electrical device such as an oil circuit breaker is indicated at 46 and has its insulated terminals 47 and 48 respectively connectedto switch terminals 49 and 50. The terminals 49 and 50 are mounted upon suitable insulator col-umns 5l and; 52 respectively extending from the frame structure and rigidly secured thereto. A rock arm member 53 is pivotal-ly mounted upon the frame structure at54. Insulator columns 55 and 5,6 form continuations respectively of the two ends of the rock arm member 53. The line terminal 42 is provided with a switch contact 57 which cooperates with a movable switch blade 58 mounted upon the end of the insulator column 56. The switch terminal member 49 is provided with a switch contact 59 for cooperating with a switch blade member 60 mount-ed upon the insulator column 55. The switch blade members 58 and 60 respectively are electrically connected to terminal members 50 and 41 vby flexible conductors, 6,1 and' 62 supplemented in each instance by hinged guide rods 63 and 64.

In order to remove the electrical device 46 from the line circuit, the circuit is broken by operation ofthe rock arm member 53 in any suitable manner, which causes two wide switch gaps to be formed as indicated at A and B in Fig. 4. To operate the rock arm 53, a Vlever 65 may be provided upon the rock shaft 54 and connected to a manually operable hand lever 66 through a suitable link 67. f'

It will be noted that'the insulator Columns 55' and 56 in moving from one extreme position to the other, move only through a'small angle and therefore the insulators may be designed with petticoats or otherwise and yet vl shed water, snow, or dirt particles when in lboth operating positions. l

I/Vhile I have described my improvements in great detail and with respect to certain preferred forms thereof, I do not desire to` be limited to such forms or details, since many changes and modifications may be made and the improvements embodied in widely "different f orms without departing from the spirit and scope of the invention in its broader aspects. Hence, I desire to cover all modifications and forms coming` within the language or scope of' any one or more of the appended claims.

IVhat I claim as new and desire to secure connecting the terminals of said device from the power circuit, said switch comprising a rock arm with an insulated contact supported from each end, stationary contacts cooperating with said rock arm contacts, and a common operating'means for rocking said arm to simultaneously actuate said insulated contacts thereon.

2. A double break disconnecting switch for disconnecting high tension electrical power lines from the power circuit comprising a rock arm, insulator columns at each end thereof counterbalancing each other and terminating in contacts, flexible conductors extending from said contacts to stationary terminals, stationary contacts cooperatingy with said rock arm contacts, and a commonl operating means for rocking Said arm to simultaneously actuate said rock arm contacts.`

3. A double'break disconnecting switch for high tension electrical power lines comprising a rock arm, insulator columns at each end thereof counterbalancing each other and terminating in contacts, iexible conductors extending from said contacts to stationary terminals, hinged guide rods for controlling the positions of said iieXible conductors, stationary contacts cooperating with said rock arm contacts, and a single operating means for rocking said arm to simultaneously actuate said rock arm contacts.

4. A double disconnecting switch comprising a pair of elongated insulator members eX- tending substantially in parallelism, a contact supported on each of said insulators, a

pair of parallel rock arms each having their ends respectively pivotally connected tosaid insulator members and forming a parallelogram therewith, means for altering the shape of said parallelogram' to actuate said insulators with the contacts thereon, and stationary contacts cooperating with the contacts on said insulators.

5. An electrical switch comprising a pair of movable contacts supported respectively upon insulating columns, said columns eX- tending in parallelism and also being movable in parallelism but in opposite directions respectively for actuating said contact making means, and a rockable support for operating said insulating columns, said columns being constantly substantially evenly balanced in respect to a pivoting point of said rockable support.

6. An electrical switch comprising a pau' of movable contacts, a pair of supporting insulators attached respectively to said contacts, a supporting member for each of said insulators, and a pair of rockable members pivotally attached respectively to each of said supporting members and forming a parallelogram therewith, and means for altering the shape of said parallelogram to thereby move said insulators longitudinally in parallelism but in opposite directions respectively for actuating said contacts, said insulators and members being substantially evenly balanced in respect to the pivoting points of said rockable members.

7. Switch mechanism comprising a pair of rock arms each pivoted to a iiXed support, switch operating insulated members pivotally attached respectively to each of said rock arms and forming a four sided gure therewith of variable shape, and contacts supported on and operated by said insulated members respectively.

In testimony whereof I have signed my name to this specification.

TOMAS BOCEK.

Images