US1453587A - Switch controlled electric - Google Patents

Description

May 1, 1923. LMWfiW H. HERTZBEWG SWITCH CONTROLLED ELECTRIC APPLIANCE Film March 9, 1922 Patented May 1, 192% UNITED PATENT OFFHZE.

HARRY HER'IZBERG. OF BIEZGOHLYN, NEVV' YORK, ASSIGNOR 10 MAGNUE; ELECQLRIG COMPANY, INC., A CORPORA'JTIUN OF NEW YORK.

SWITCH-CUNlIlEt'ULLED ELECIBIC APPLIANCE.

Application filed March 9. 3.922.

1/ all whom it may concern:

lie it known that I, Halter l-lnwivnncno, a

ci ten of the United Stateoi America residingg in the city of New .iorlc, borough oi li'ooklyn, county of Kin s and Fltate of:

New York, have invented certain new and useful in:provements in blwitclrtlontrolled l llectric iimiliances, of which the following is a specification.

This invention. relates generally to switch controlled electrical appliances such as attachment plugs and has specific reference to switches of the type particularly adapted to be used in connection with. such plugs.

15 An important object oi the invention to so construct and arrange the various elements embodied therein as to make possible the provision of a con'ipact andv durable device employing an improved form or switch which is inexpensive to inarmiacture and reliable in operation.

Other objects of the invention and oertain advantages thereoffwill become apparent from the following description taken in connection with the accompanying drawings in which:

lligure 1 is a plan view (it a switch plug embodying: my invention.

Figure 2 is a view showing}; in elevation the internal construction of the plug.

I Figure 3 is a transverse sectional view taken on line 3--3 of Figure 2.

Figure 4 is a. longitudinal sectional view taken on line 4 4: of Figure 2.

Figure 5 is a similar view to that of Fig ure 4; taken on line 5-5 of Figure 2.

Fi ure 6 is a pers aective view of a recioo a p L rocating or circuit closer o ieratinp; bar,

Figure 7 is a plan view illustrating the circuit closer as about to snap from opened to closed position. i

In the drawings wherein I have shown what I at present consider the preferred form of my invention, the numeral 5 indicates a housing or casing formed of suitable insulating material, the casing: being]; composed of two similar sections 6 and 7 which are arranged in a face to face relation and held in position by means of screws or bolts 8 passed transversely through the section. Each of the sections 6 and 7 is so formed or moulded as to provide registi i chamhers 9 and 10, within which are arranged gripping contacts 11 and 12, which rcspew tively comprise resilient lingers 13 and let Serial No. 542,362.

to which are connected similar lingers 15 and 16. The sections 6 and 7 are constructed to provide also a switch chamber 17 within which is arranged a snap switch ii'idicated as a whole by the i'iuineral 18.

The switch 18 comprises a base or switch block 19 formed from suitable insulating material, to the upper face of which is secured a pair oi? resilient substantially U- shaped contact members 20 and 21. These resilient contact members are held in position respectively by means of screws and 33, the screw 22 being utilized to electrically connect the gripping contact 12 with the resilient contact 20, whereas the screw 2,25

utilized to electrically connect the resilient contact 21 with a relatively short conductor 2d, the outer or tree end oi which is held in position within the recess termed in the section 7 by means of a screw 536. It will be noted that the gripping; con tact 11 is provided with an extension 27 which passes under the switch block 19 and terminates within the recess 28 formed in the section '7, the extension 27 being secured at its tree end to the section 7 by means of a screw 29. The screws 26 and 29 are adapted also to electrically connect the bared ends oi conductors 30 and 31 with the conductor 24: and the extension 27. Asa means for protecting the conductors 30 and ill there is provided the usual form of flexible coil 32 which is suitably held at one end between the sections 6 and 7.

As a circuit closer operating means I employ a reciprocating bar 33 which is adapted to operate in a transverse groove 34 formed in the base 19. The bar 38 is provided at opposite ends with push buttons 35 which extend through openings 36 formed in the sections 6 and 7 and-arc adapted to operate within recesses 37 formed in the base 19. Upon the upper face or edge or the bar 83 there is formed a lug 38 carrying a circuit closer in the form of a transversely disposed coil spring 39 upon the ends of which are fitted a pair of contact points 40, the ends of which are tapered as shown in l igure 6. As a means for temporarily restraining the contact points against move ment as the bar 33 is moved in either direction, I provide a yoke a1 the ends or arms 42 of which extend an appreciable dis-- tance above the uppertace oi. the block it). The yoli'e 4i is loosely arranged within a till jaw

groove 43 formed onv the undertace of the base 19 and is free to slightlyinove longitudinaliy in one direction or the other in order that the impinging effect of the contacts 40 upon the arms 42 thereof may be equalized to insure simultaneous engagement or disengagement between the contacts 40 or the resilient contacts 20 and 21 when the bar 33 is moved in either one direction or the other.

With the various elements positioned as show in Figure 2, the circuit is closed through resilient contacts 20 and 21 "by means of the transversely disposed coil spring 39 which functions as a coi'iductor when the contacts 40 are electrically connected withthe resilient contacts. By moving the bar 33 a'tension is set up within the spring 34 tending tosever engagement of thecontacts 40 with the resilient contacts 20 and 21 but such disengagement is prevented by" the upwardly extending arms 42 until the bar 33 has moved a sufiicient distance to enable thecontacts 40 to freely pass the retarding arms 42. As soon as the spring 39 has been distortionedsufliciently to permit disengagement of the contacts .40 with the arms 42, the contacts by reason of the tension maintained within the spring 39 are quickly snapped from engagement with the resilient contacts 20 and21 thus opening the circuit therebetween. With the circuit open and the contacts'40 now located upon the opposite sides of the arms 42 the resilient contacts 2 0 and "21 may be placed in electrical connection with each other by a quick snap action of the spring 39 when the bar 33 is moved in anopposite direction a suflicient distance to enable the contacts 40 to freely pass the upwardly projecting arms 42.

' Having thus described my invention, I claim: v

1'. In an electrical appliance, a pair of contacts, a movable circuit closer carrying element, a circuit closer carried by said element and adapted to be moved bodily therewith tewar d said contacts, and means lying in the path of travel of said closer for restraining the ends of the same against moveinent while said element is being moved a predetermined distance, the ends of said closerbeing released upon continued movement of said element and thereafter snapped into electrical connection with said contacts.

2. In an electrical appliance, a pair of contacts, a movable circuit closer carrying element, a resilient circuit closer adapted to be noved bodily by said element to ward said contacts, and means lying in the path oftravel of saidcloser for restraining the ends of the same against movement while said element is being moved a predetermined distance, the ends of said closer being released upon continued movement of said element and thereafter snapped into electrical connection with said contacts.

3. In an electrical appliance, a pair of contacts, a reciprocating circuit closer operating element, a circuit closer carried by said operatingelement, said closer being in the form of a spring adapted to be moved bodily toward said contacts b said operating element upon a correspon ing movement of the same, and means lying in the path of travel of said closer for restraining the ends of the same against movement while said operating element is being moved a predetermined distance, the ends of said closer being released upon continued movement of said operating element and thereafter snapped into electrical connection with said contacts.

4. In an electrical appliance, a pair of contacts having resilient arms,a movable circuit closer operating element, a resilient circuit closer carried by said element and adapted to be moved bodily therewith toward said contacts, and means lying in the path of travel of saidcloser for restraining the ends of the same against movement while said operating element is being moved a predetermined distance. the ends of said closer being release u continued movement of said operating element, and thereafter snapped into electrical connection with the resilient arms of said contacts. i

5. In an electrical appliance, a pair of contacts, a movable circuit'closer operating element, a circuit closer carried by said operating element and adapted to be moved bodily therewith, said closer being in the form of a coil spring, contacts carried at the opposite ends of said spring, and means lying in" the path of travel (if said closer for restraining the second named contacts against movement while said o} erating element is being moved a predetermined distance the second named contacts being released upon eontinued movement of said op erating element and thereafter snapped into electrical connection with the first mentioned contacts.

6. In an electrical appliance. a base, a reciprocating closer operating element, a pair of contacts, a resilient circuit closer carried by said opera-ting element and adapted to he moved bodily therewith toward said contacts when said element is moved in a cprresponding direction, a yoke having arms lying in the path of travel of said closer for restraining the ends of the same against movement while said operating element is being moved a predetermined distance, the ends of said closer being released from said arms upon continued movementof said op erating element and thereafter snapped into electrical connection with said contacts.

'7. In an electrical appliance, a contact, a movable closer operating element, a circuit closer carried by said element and adapted to be moved bodily therewith toward said contact, and means lying in the path of travel of said closer for restraining an end of the same against movement while said operating element is being moved a predetermined distance, the end of said closer being released upon continued movement of said operating element and thereafter snapped into electrical connection with said contact.

8. in an electrical. appliance, a pair of contacts, a reciprocating closer operating element, a resilient circuit closer carried by said element and adapted to be moved bodily therewith toward said contacts, movable means lying); in the path of travel of said closer for restraining); the ends of the same against movement while said operating ele-- mentis being moved a predetermined distance, the ends of said closer being released upon continued movement of said operating element and thereafter snapped into elec trical connection with said contacts.

9. In an electrical appliance, a pair of contacts, a circuit closer operating element, a closer carried by said element, said closer being in the form of a coil spring attached to said element and adapted to be moved bodily therewith toward said contacts, and means lying in the path of travel of said closer for engaging and retaining the ends thereof in a given position during a predetermined movement of said element, whereby tension is set up within said closer, the ends of said closer being released upon con-- tinued movement oi said operating element and thereafter snapped into electrical connection with said contacts by the tension set up within said spring.

10. In an electrical appliance, a pair of contacts, a reciprocating circuit closer operating element having a lug carried, there by, a circuit closer in the form of a spring passed through said lug and adapted to be moved bodily with said operating element toward said contacts upon a corresponding movement of said operating elen'ient, and movable means lying in the path of travel of said closer for engaging and retaining the ends of said spring against movement while said operating element is being moved a predetermined distance, the ends of said spring being;- released upon continued movement of said operating element and thereafter snapped into electrical connection with said contacts.

In testimony whereof, I have aflixed my signature to this specification.

HARRY HERTZBERG.

Ill)

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