US1108605A - Automatic sectionalizing-switch. - Google Patents

Description

J. E. 'M OLONY.

AUTOMATIC SEGTIONALIZING SWITCH. APPLICATION FILED SEPT. 11 1909.

1,108,605. Patented Aug. 25, 1914.

Witnesses: Inventor:

4Z4 Jan-1& KING/1on 1 @Z- mu A b Appiicatiem September 21, mos,

that I, Mono-HY, a United Qtates, residing at of Schenectady, invented cert in new niprovcznents in Automatic log-S sches, of which the "foi- Qj is a specification.

invention relates to systems of eleci'ibution and. especially to sectionautomatic ing anci disconnecting cm of this character is No. 916,888, giantecl filter S. Ziia lley. In that O'lil coil which cioses the s constantly in circuit so cioscai.

my invention is to prevent ent consumed by th s large to rozizle for open i ing the ht occurs.

=, Bio-voltage release coil ":1; drawing is diagram tion,

.tions '3. and 2 of a or are shown as supi ough ii contact-arm 5 is piv tally o e end by the pivot 6, and 1 arm is permanently conanch Wire with the sec ndnctor. The overload coil 8 .l. this branch. The free end; videfl with a brush-contact 'luilliitly.ShUDiJ-Cfifititfit 10 which Kl cooperate with a fixed conbranch wire 12, including the 13, connects said; fixed contact "'F the conductor, to ooen nece oe,

opecifieatiozz of Letters Extent.

"imtenteili Augx 235,

tionary i oort. in order to cl cc tacts arm 38 upon the contact i1, able core a-solen'oid 16 1s Jive the section 1, preferably through the branch Wire 7, as shown There are two interlocks in this Wire 19, one of which is the floating Contact 20 carried loosely on a stem 21 rising from the core 15, and having a certain amount of lost motion between the collars 22 on said stem. The other interlock comprises a contact 23 actuatedby a coil 2% in a circuit connected at one with tile section 2 tluough a hand switch 26, grounded at the other and through a re" sistance 27.

i /hen the main switch is once closed through the energization of the coil 16, it is held in closed position by a toggie comprising the links 28 and 29, acting betv'ee contact-arm 5 and a fixed 30. toggle is not overset when holclii switch clo but is kept from coil; means oi a 1)};JUK latch 31, which on; ox'erhanging portion 32 of the the toggle. "The iatch is, in the, a pivoteci upon he pivot 30. The this ievcr extends into the path men-t the armature 33 of the ovc lc-l coil 8. Springs and are respectively connected t the latch and the armature. l pon the occurrence of an overload, the arniatiu'e 33 is drawn upward against the tension spring 35 into ens t ,me: c with free of the latch, which it lifts and thereby releases the toggle anti allows J0 collapse under the Weight "on-- tact-arm, assisted by the spring opening the switch. This position 0: parts is shown in the drawing; Fun more, in order that the switch may open on a lowering or a failure of Voltage, the core of the solenoid 24 is arranged to (irop upon. a lever 36 Whose other end liesuncier the armature 33. When the circuit is closed, a spring 37 pulls the-lever 86 down anci from the armature, but when the switch is opened, or in case of a failure voltage when said switch is closed, the the solenoid 24 o l-ops and by throwi lever 36, trips the toggle and opens main switch v My invention thusprovides for an a mull lnatic opening of the sectionalizing switch either in case of a ground on either section causing a rush of current sufficient to energizetheoverload coil 8, or on the other hand in case of a failure of voltage deenergizing the no-voltage, coil 2.4. The sectionalizing switch will be automatically closed upon the closing of the hand switch 26, if both sectionsl and 2 are energized. The'current llows through the switch 26 and the no-yoltage coil 24 and resistance 27 to' ground, picking up the interlock 2. This closes the circuit of the main actuating coil 10, Wllicll' closes the main switch and connects the two sec 10-115 1 and 2. closes, the interlock 20 will be opened at the same instant, breaking the circuit of the coil 16, but inasmuch as the catch levers have also at this time become engaged, theswitch' will remain closed. i

The chief advantage of my invention is that the current required to operate it is ii'iconsiderable. The only coil in circuit consuming extra current after the switch has closed is the small no-voltage coil 24:, and the current through thisis'i-ediiced to a miniimnn by the resistance 27.

hat I claim as new andzdesire to secure by Letters Patent of the United States, is

lflhe combination with two sections of an electrical conductor each having its own feeder, of an automatic connecting switch .compr singan electromagnet, acontact arm actuated thereby, and two interlocks control-5 ling the circuit of said electrtnnagnet, one opened by the electromagnet'when it'is energized, and the other controlled by a n'o-voltage'ctnl connected With one of said sections.

2. The combination with two, sections of an electrical conductor eaclr having its own "When the contact-arm ca F 1,108,605]

feeder, of an" automatic connecting switch comprising an electromagnct, a contact-arm actuated-thereby, a mechanical lock for holding said arm closed, an overload coil adapted to trip said lock, and two interlocks controlling the circuit of said eletroinagnet, one adapted to be opened by theelcctromagnct when energized, and the other controlled by 'a'no-voltage coil connected to one of said sections.

3. The combination withftwo sections of an electrical conductor each having its own fodder, of an automatic connecting switch comprising an electromagnet, a' contact-arm actuated thereby, a toggle andcatch ionlock-r. 'ing said arm when closed, an QYQl'lOud coil adapted to trip said toggle, a novoll'age'coil also adapted to trip saidto ggle, and two inter-locks in circuit with. Said electron'lagnct,

one controlled by said electrtmlagn'et, and

the other by-said no-voltagccoil.

I 4. An electric switching device for connectingtu o sections of an electric coluluctor comprising, aswitch for electrically conner-l- 111g said sections,,a loclong'toggle iorlloldmg said switch ma closed position, an.o\cr

load coil, an arnu'iture cooperating with said overlmul coil to release said locking toggle and open said 's'u'itch on appearance of overload, a lever;cooperating \Vltllsflltl armature,

anil'a nowol-tagc coil acting directly upon said lever toindependently release said loclt- 'i-n'g toggle and open said switch on appearance of an abnormallylow Voltage.

l'n :itne.--:s whcreoi, I have hereunto set" my hand this 9th day. of September, 1900.

JAMES If. MOLONY. I

Wit 11055082 Y BENJAMIN B. HULL, THOMAS W. NOUNAN. 1

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