US1850785A

US1850785A - Double pole snap switch

Info

Publication number: US1850785A
Application number: US515853A
Authority: US
Inventors: Robert H Bentley
Original assignee: Arrow Hart and Hegeman Electric Co
Current assignee: Arrow Hart and Hegeman Electric Co
Priority date: 1931-02-14
Filing date: 1931-02-14
Publication date: 1932-03-22
Anticipated expiration: 1949-03-22

Description

March 22, 1932. R, H. BENTLEY 1,850,785

DOUBLE POLE SNAP SWITCH Filed Feb. 14, 1951 INVENTOR n. ICLROBERT H. BENTLEY fyhzrdrnqys Patented Mar. 22, `1932 UNITED STATES PATENT OFFICE ROBERT H. BENTLEY, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE ARROW-HART & -HEGEMAN ELECTRIC COMPANY, 0F HARTFORD, CONNECTICUT, A. CORPORATION OF CONNECTICUT nounnn roLn sNAr SWITCH Application iled February 14, 1931. Serial No. 515,853.

This invention relatesto snap switches, more particularly it relates to double pole snap switchesinwhich the movable switch member is actuated by the movement of a slidable thumb member to which a spring is attcahed, which in turn will actuate a movable switch yoke when the thumb member is moved past a dead center position. It is an object of my invention to provide a compact switch mechanism having provision for breaking a circuit at two points one in each line of the circuit to any electric device which may be controlled by the switch. 'Another object is to make a snap switch with a slidable actuator which is adapted by the agency of a tensioned spring to move a yoke member which in turn will break a circuit with a .snap movement, simultaneously at two points in the circuit,

the yoke and actuator being held together by the tensioned spring. Other objects and the advantages of my invention will appear as it is described in connection with the accompanying drawings.

In the drawings:

Figure 1 is an elevation view of one side of my snap switch.

Figure 2 is an elevation view of theother side of my snap switch.

Figure 3 is an elevation View of one end of my snap switch. i

Figure 4 is an elevation section view of my invention taken-on line 4.-'4 of Fig. 1.

Figure 5 is an elevation section view of my invention taken on line 5 5 of Fig. 6.

Figure 6 is a plan view of my invention.

Figure 7 is a sectional view taken on line 7 7 of rig. 1.

anism is located between two equal-sized rectangular insulating plates 10-12 having rounded corners. These plates are spaced apart by four iat

parallel posts

14, 16, 18, 2O

'located at the corners of the insulating plates 10-12. The insulating plates are secured to the posts by tongues on the ends of the posts which extend through the plates and have their ends peened over thus forming a permanent connection between the posts and the plates. The

posts

16, 18, which are at y diagonally opposite corners of the switch are identical and have extensions 16', 18 at their lower portions which extensions are turned inwardly of the switch and at right angles to the posts and have

portions

16t, 187, turned at right angles to them so as to lie upon the upper surface of the lower insulating plate 12. These

portions

16t, 187? have screw threaded apertures formed therein to accommodate binding screws 16s, 18s, for securing the ends of the lead wires. Thus these

portions

16t, 18 with their screws constitute wire termina s. i

Secured to two of the

posts

16, 18, at one end of the switch are resilient sheet metal spring contacts 14e, 160, which are adapted to be engaged respectively by dierent legs of the hereinafter described yoke member 10.l

vSecured to the lower face of the upper plate are

identical members

30, 32 which serve as bearings for the movable switch yoke 40 and also as wire terminals. Member 30 is shown in detail in Figure 11. These bearing

members

30, 32 are formed from sheet metal and have bearing portions 30', 32', which lieeparallel to each other between the

posts

14, 16, 18, 20. Inverted V notches 30e, 32a, are cut in the bearing portions to accommodate the legs of the yoke member as will hereinafter be described.

Referring for example to the bearing member 30 each bearing member has two lugs, a terminal lug 30# and a holding lug 30h, turned at right angles to the bearing portion 30 in opposite directions, but lying in the same plane. The terminal lug 307? which is turned inwardly of the switch at one end of the bearing member has a screw threaded aperture formed therein to receive a binding screw the plate by rivets.

30s for securing the end of a lead wire. The upper plate is apertured adjacent these terminal lu s 301i, B2i to accommodate the heads of the blnding screws. Thus these lugs together with their screws forni' wire terminals. The holding lug of each bearing member is turned outwardly of the switch above the V notch and is held to the upper plate by two rivets.

The yoke member40 is formed of two metallic legs 40L which are bridged by an insulating plate 40p, the legs bein secured to As herein efore indicated the yokemember 40 has its legs 40L bearing in the apex of the V notches, it being understood that the

bearing members

30, 32 are so located that the edges of the V notches are in the same plane. An aperture is provided in the center of: the insulating bridge plate 40p into which aperture one end of a tension spring 50 is hooked. The other end' of this spring is connected to lthe operating member 60 of the switch. This operating member 60 comprises a hook 60h which passes through a longitudinal slot 10s in the upper insulating plate 10, and through a slidable plate 65 of insulating material which lies upon the top of the upper plate 10, and through a collar 600. The upper end of the hook 60k, after passing through the collar 60o, is peened over to permanently hold the hook, collar, and slide plate together in the slot of the upper plate l0. Thus this operating member is permitted to slide in the slot 10s of the upper plate, and as it slides from one, end to the other of the slot it carries the upper end of the tension spring 50 past a dead center position which causes the yoke member 40 to snap from one side of the,V notch to rthe other.

In order to insulate the bearing portions of the bearing members from each other and from the tension spring and operating member, insulating plates 62 are placed on each side of the tension spring so as to lie`flush against the inner faces of the bearing 1nem bers. Thus the tension spring and operating member are permitted to move between these plates without danger of engaging either of the bearing members. The lower portions of .y

these plates are cut away to ment of the yoke member.

In operation, the feed wires, (not shown) from a source of power, may be connected to the wire terminals t and 32t and the wires to an electrical device, may be connected to the

wire terminals

16t and 18t or vice versa. Thus the current will run through the bearing member 30 to the leg 40L of the yoke permit free moveand then through the resilient contact 140V to the post 14. In order to conduct the current from the post 14 which has no wire terminal to the post 18 which hasa wire terminal, a bus bar 63 is used to to connect those posts., Thus the current goes from post 14 through the bus bar 63 to post 18 to the wire terminal 1825. From there the current goes through the translating device (not shown). Upon return the current is conducted through the switch from the wire terminal 16t through post 16 to resilient contact 160. From this contact it goes through the leg L of the yoke to the bearing member 32 to its wire terminal 32t. A feed wire completes the cir- 'cuit to the source.

Alternatively, the feed wires may be connected with the

wire terminals

16t and 30t and the lead wires of the translating device may be connected to the terminals 18t and 32t or vice versa.

As the operating member 60 is moved from left to right (see Figure 5) the end of the tensioned spring 1s movedv ast its dead center position in the plane of t e yoke member and causes the yoke to snap from the left bearing surface of the V-notch to the right, thus disengaging legs 40L from contacts 14o and 160 and breaking the circuit at those two points.

From the foregoing it will be seen that the tension spring 50 is all that holds the operating member andA yoke 40 together, the tension of the spring holding the slide plate against the surface of the upper late 10 and at the same time holding-the cmg of the legflOL in the apex of the V notches.

any changes within the scope of my in- ,thereon and adapted to be connected in an electric circuit, a yoke member having mutually insulated legs bearing "in said bearing members, a pluralit of mutually insulated contacts adaptedto be engaged by said legs, a switch actuator, and a tensioned sprin holding said yoke and said actuator on sai insulatmg member.

2. A double pole snap switch comprising a plurality of mutually insulated contacts, a yoke member having a plurality of mutually insulated conducting le adapted to engage said contacts, a plura ity of mutually insulated bearing members for said yo e, a slidable actuator, and a tensioned spring engaging with said yoke and actuator.

3. A double pole snap switch comprising a plurality of mutually insulated contacts, a yoke member having an insulating portion and lurality of mutually insulated conducting egs adapted to engage said contacts, a

'plurality of mutually insulated conductive plurality of mutually insulated contacts, a yoke member having a plurality of mutually v insulated conducting legs adapted to engage plurality of mutually insulated conductive' legs bearing in said bearing members and adapted to engage with said fixed contacts, and actuating mechanism to move said yoke with a snap motion.

6. A double pole snap switch comprising a plurality of mutually insulated metallic posts, certain of said posts having wire terminals, a plurality of fixed contacts secured on certain of said posts, a yoke member having a plurality of mutually insulated conducting legs adapted to engage said'contacts, a plurality of mutually insulated conducting bearing members for the legs of said yoke member, said bearing members being provided with wire terminals, and actuating mechanism for moving said yoke member with a snap. v

7. A double pole snap switch comprising an insulating member, a plurality of mutually insulated metallic posts mounted thereon, a plurality of xed contacts secured to certain of said'posts, a plurality of metallic mutually insulated lnotched bearing members mounted on said insulating member, a yoke member having a plurality of mutually insulated conductive legs loosely held in said bearing member and adapted to engage yvith said fixed contacts, and actuating mechanism to move said yoke with a snap motion.

8. A double pole snap switch comprising a plurality of Ymutually insulated metallic posts, certain of said posts having wire terminals, a plurality of fixed contacts secured on certain of said posts, a yoke member having a plurality of mutually insulated conducting legs adapted to engage said contacts, a plurality of mutually insulated conducting bearing members for the legs of said yoke member, said bearing members being pro vided with wire terminals, an operating member movable in a straight line, and a tensioned spring connecting said yoke and operating member to move said yoke with a snap and holding said operator and yoke in assembled relation.

9. A double pole snap switch comprising a i pair .of insulating plates, a plurality of posts holding said plates in spaced parallel relation, a plurality of stationary contacts secured to certain of said posts, a plurality of metallic bearing members, a yoke member having conducting legs secured together by an insulating bridge and adapted to engage 'with said lixed contacts, a shiftable actuator,

and a spring connecting said actuator and yoke, whereby said yoke is caused to move with a snap and said yoke and actuator'are held in assembled relation.

10. A double pole snap switch compris-rA ing a pair of insulating plates, a plurality of posts holding said plates in spaced parallel relation, a plurallty of stationary contacts secured to certain of said posts, certain of said posts being provided with wire terminals, and being identically formed, a plurality of identical metallic bearing members provided with wire terminals, a yoke member having conducting legs secured together by an insulating bridge and adapted tomengage with said ixed contacts, a shiftable actuator, and a spring connecting said actuator and yoke, whereby said yoke and actuator` are held in assembled relation. i

11. A double pole snap switch comprising a pair of insulating plates, a plurality of posts holding said plates in spaced parallel relation, certain of said posts having wire terminal portions, a plurality of mutually insulated bearing members having wire terminal portions, all of said terminal portions lying adjacent said plates, said plates being apertured adjacent all said terminal portions to receive binding screws for securing lead wires to said terminal portions, stationary contacts secured to certain of said posts, and a movable switch yoke adapted to engage and disengagc said contacts.

12. A double pole snap switch comprising a pair of insulating plates, a plurality of posts holding said plates in spaced parallell relation, a plurality of stationary contacts secured to certain of said posts, certain of said posts being provided with wire terminals, a plurality of metallic bearing members provided with wire terminals, a yoke member having conducting legs secured together by an insulating bridge and adapted to engage with said fixed contacts, an actuator slidable upon the outer surface of one of said insulating` plates, and a tensioned spring connecting said yoke and actuator, whereby said yoke` is caused to `move with a snap and said yoke legs are heldl against said bearing members and said actuator is held against saidV outer surface of said insulating plate.

13. A double pole snap switch comprising an insulating member, a plurality of mutually insulated metallic bearing members secured thereon, a yoke member having mutually insulated metallic legs bearing on said bearing` members, xed contacts adapted to be engaged by said legs, an actuator, a tensioned spring engaging with said actuator