US1414413A - Electrical switch - Google Patents

Description

C. H. HODGKINS.

ELECTRICAL SWITCH.

APPLICAUGN FILED NOV- 16, I917- 1,414,41 3, Patented May 2, 1922.

INVENTOR 07a rles H. fladq/(ms W Ww/ W ATTORNEY UNITED STATES";

PATENT OFFICE.

CHARLES H. HODGKIN S, ,OF PITT$BURG PENNSYLVANIA, ASSIGNOR T WESTING- HQU E ELE TRIC d MANUFAQ URING G MPANY, A CORPORATION O PENNSYL- VANIA.

Specification of Letters Patent.

ELECTRICAL SWITCH.

Patented May 2, 1922.

To all whom it may concern:

Be it known that I, CHARLES H. Hono- Kiss, a subject of the King of Great Britain, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Electrical Switches, of which the following is a specification.

My invention relates to overload trip switches and particularly to means forefl'ecting the resetting of such switches.

(lne object of my invention is to provide an overload trip switch of the above-indicated character with electrically operated means for resetting the switch when the same has been opened.

In overload trip switches which are o in service, means, such as lgtifl ar r Vl(l9(l for holding in an pen posi ll 112111 the latches are removed to permit the resettin of the switches. Thus, when overload trip switches, which are now in service on supply lines, are constantly subjectcd to overloads, it is essential to provide means for quickly and and conveniently resetting the switches when the same have been opened to break the power circuits. Moreover, it is desirable to provide remotely disposed means for effecting a resetting of the switches.

In a system constructed in accordance with my invention, an electrically controlled means, that may be controlled at a distance from the switch is provided for releasing the latch which maintains the trip switch in an open position, 3

In the accompanying drawing, Fig. 1 is a side elevational view, partly in section, of a switch constructed in accordance with my invention; and Fig. 2 is a front elevational view of the switch illustrated in Fig. l.

Referring to the drawing, a switch 1 is mounted upon a frame 2 that is secured to a support 3 in any suitable manner, as for example, by bolts 4. The switch 1 embodies a coil 5 that is mounted within the supportin; bracket 2, a core member 6 which operates within the coil 5 and is controlled thereby. a daslnpot T for governing the action of the core member 6. and a switch member 8.

Thc switch member 8 is pivotally mounted upon the supporting bracket 2 and is pro- Yllllll with a contact member 9 for bridging two contact terminals ll) and 11 that are mounted upon the support 3, when the switch is in a closed position. The switch member 8 is also provided with a projecting portion 12 to be engaged by a latch 18, for a purpose to be set forth hereinafter. A spring 14: is provided for normally maintaining the switch member 8 in a position to bridge the contact terminals 11) and 11.

An arm 15, which is pivotally connected, intermediate its ends. to the supportin bracket 2, has a latch 13 formed on one end thereof and has an armature 16 connected to the other end thereof which is operated by means of a coil 17. A non-magnetic coil sp g 18, which is mounted on the supportng'brackct 2, is provided for maintaining the arm in a position to maintain the latch 13 in engagement with the portion 12 of the switch member 8.

Adjacent to the contact terminals 10 and 11, are provided two auxiliary contact terminals 19 and 21) which are bridged by a switch member 21 when the contact member 9 breaks contact with the contact terminals 10 and 11. The switch member 21 is pivotally mounted on the contact terminal arid is provided with an arm 22 which is operated by the switch member 8 to 'disconmeet the contact member 21 from the contact terminal 19 whenever theswitch member 9 bridges the contact terminals 10 and 11. A plunger 23, which is mounted on the bracket 2, is operated by the core member 6 to release the switch member 8. A push button 24 is provided for completing a circuit through the coil 1? whenever the switch 1 is in a released position and the contact terminals 19 and 20 are bridged by the Contact member 21.

In case the trip switch is in the position illustrated in thc drawing and the coil 5 is subjected to an ovcrload, the plunger 23 is moved by the core member b to give the switch member 8 a rotative movement in order to break contact betwecn the contactterminals 10 and ll and the contact mcmbcr 9 and to permit the latch 13 to engage the proat any distance from the operating part 01 the trip switch, is operated to complete a circuit from the battery through the coil 17. Thus, the coil 17 is energized to attract the armature l6 and to raise the latch 13 in a manner to permit the coil spring 14 to close the switch member 8.

Modifications in the apparatus and arswitch when said switch is closed and means 5, A switch mechanism comprising two windings, two pivoted members of substanrangement and location of parts may be.

made within the spirit and scope of my invention, and such modifications are intended to be covered by the appended claims.

I claim as my invention:

1. A switch mechanism comprising a v pivoted contact-controlling member having a circuit closing and a circuit opening position, and a latch member yieldingly engaging the pivoted member in one position of the pivoted member and restraining said member in its other position when said pivoted member is actuated thereto. A

2. A. switch mechanism comprising a pinrality of stationary contact members, a bridging member therefor, a pivoted mem: her for supporting and controlling the pivoted member, means gt'or causing the bridga ing member to yieldingly engage the stat tionary contact members and a latch member normally yieldingly engaging the pivoted member and adapted to restrain said member in a predetermined biased position upon the disengagement of the stationary contact members by said pivoted member and the actuation thereof to the predetermined biased position.

25. A switch mechanism comprising a main switcl1,-a pivoted member of L shape having tially L-shape respectively controlled thereby, one of the members supporting a contact member at one end and adapted to be engaged and latched at the other end by the second member when the former member is actuated to the open position of the switch and a pivoted auxiliary contact member controlled at one end by the contact-bearing member and at the other end by a spring member, the main contact and the auxiliary contact members being so disposed that one is disengaged when the other is engaged with its corresponding stationary contact member.

6. A switch mechanism comprising an operating coil, a switch, a pivoted support: ing member therefor, a latch for maintaining the pivoted member in a biased position, a core member having relatively large inertia subject to the energization of the operating coil, a movable member disposed in the path of the core member and adapted, upon the impact of the core lllel'liblf bt). move the supportr'ng member t0 u P S BQ A which it may be engage and rbv the latch.

7. A switch mechanism comprising ,p pivotally mounted switch member, a spring for normally maintaining the switch ,member in one position and a latch directly en-i gaging the switch member for restraining the switch member in another position, and operating mechanism therefor comprising a a contact member disposed at one end and a coil, a pin member having relatively small controlling spring at the other, a main winding for actuating the pivoted member, a latching member of L-shape adapted to engage and to restrain the spring end of the pivoted member, a spring disposed at the other end of the latching member to control the movement thereof, and an auxiliary winding disposed adjacent thereto having its axis perpei'idicular to that of the main winding and utilizing the supporting structure thereof for its magnetic circuit.

4.. A switch mechanism comprising two windings disposed with their axes perpendicular to each other, pivoted members of substantially L-shape actuated by each winding, a spring member for controllin; the artnation of the pivoted members, a contact member disposed on one oi the pivot-ed members, the other pivoted member being adapted to engage and to latch the contact-bearin member when said member is actuated, an auxiliary switch opened by the main inertia l'or actuating the switch member to its latcliwontrolled position and ap inde! pendently movable core member having relatively large inertia. and responsive to the, coil to quickly actuate the pin member hav ing the small inertia to actuate the switch member.

8. A switch cornrnising a contact member, a pivoted supporting member therefor, resilient means for biasing the pivoted mem her to one position. a movable member having relatively small inertia and movable in a direction to counter-balamre the biasing effort of the resilient means, and a latch to engage and restrain the pivoted member in a second biased position upon the counterbnlanring ot' the resilient means by the 1nOv able member.

in testimony \\'licreol' l have hereunto subscribed my name this 24th day of Oct, 19] 7.

CHARLES H. HUDGKINS.

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