US2096386A - Electric switch - Google Patents

Description

y oct. 19,1937.

F. TAUBNER 2,095,386 EpEcTRIc SWITCH Filed sept. 15, 193s MJ INVENTOR '35 bottom of this recess. Curved recesses 9for wires A plate 4U of insulating material is provided 35 40 .The push button I0 comprises a hollow stem opposite ends with extensions 42 to be placed in 40 Patentedoct. ISI), 1937 a I UNITED STATES PATENT OFFICE ELECTRIC SWITCH Frank Taubner, Bronx, N. Y., assignor to Leviton Manufacturing Company, Brooklyn, N. Y., a corporation of New York Application September 15, 1933, Serial No. 689,545 s claims. (ol. zoo-s4) This invention relates to a switch of the push with extensions I9 (Fig. 11) that can be bent to button type that is especially useful as a canopy fit into notches 20 on the enlarged end II of the switch, but is not restricted to this particular use. push button Ill to retain this plate I1 in place.

The invention will be understood from the de- The lower end 2| of the twisted metal strip I6 5 scription in connection with the accompanying is reduced to fit. in the hole 4. A circular switch 5 drawing in which Fig. 1 is a side view of an operating member 22 is provided witha-rectanguillustrative embodiment of the invention; Fig. 2 larly shaped hole 23 at its center through which is a similar view at right angles to Fig. 1; Fig. 3 the reduced end 2| of the strip I6 extends. The is a vertical section through the device; Fig. 4 isl member 22 is slit along radial lines 24 and each an end view of the body portion of the device; quadrant 25 thereby formed is slightly twisted so 10 Fig. 5 is a section along the line 55 of Fig. 4; as to have one cut metal edge 26 projecting above Fig. 6 is a plan view of one vof the switch operating the upper surface of this member and the other members; Fig. '7 is an edge view of Fig. 6; Fig. 'cut metal edge 21 projecting below the lower sur- 8 is a plan view of the switch or circuit closing :face of this member. member; Fig. 9 is an edge view of Fig. 8; Fig. 10 A circular switch or circuit closing member 28 15 is an end view of the push button and Fig. 11 is of thin metal hase. circular opening 29 fitting a longitudinal section through the push button. around the reduced end 5' of the projection 5 In the drawing reference character I indicates at the bottom of the recess 3. 'The member 28 a base or housing of insulating material. The is slit along the line 30 on opposite sides and housing is provided with extensions 2 on opposite the-metal is struck up to form cut metal end lugs 20 sides at one eri and a recess 3 that is Vcircular in 3| against which the edges 21 of the member 22 cross section extends axially into the body I t0 press to turn this switch member. Circular slits contain the switch or circuit closing member and 32 and radial slits 33 at the ends of the slits 32 other parts. A bearing hole 4 for a switch operare provided to form spring contacts 34 that are ating member is provided in a circular extension bent downwards so that their ends 35 will make 25 5 at the center of the bottom of the recess 3. contact with the at metal contacts 36 that lie= Stepped or toothed surfaces 6` are also provided upon alternate surfaces 6 in the bottom of the at the bottom of the recess 3 around the prorecess 3 and cover them when the switch 28 is in jection 5, each one of these surfaces being sloped f circuit closing position.

circumferentially from one end to the other so Each contact 26 is connected by a metal strip 3o as to leave a shoulder 1 (Fig. 4) at the end of 31, with which it is preferably integral with an each surface 6. Four of such surfaces are shown. electric wire 38. The strips 31 rest in the bottoms Axially extending grooves 8 are provided along of the grooves 8-and the upper ends are bent, as opposite sides of the recess 3 extending to the shown at 39 around the wires 38.

are provided in the face oi the body I and ex 'at the end of the body or housing I and has tensions 2 on opposite sides of the recess 3. The a central hole through which the push button l0 sides of the inner ends of the recesses 9 compasses. A metal plate 4|, havingy substantiallyv municate with the upper ends of the grooves 8. the same shape as the plate 40, is provided at and an enlarged end Il. The outer edges I2 recesses 43 in the ends of the extensions 2. The (Fig. 10) of the enlarged end II -are rounded to ends of the extensions 42 are bent to extend some t the recess-3 and these edges are provided with distance along the under-side of the extensions extensions I3 which project into the grooves 8 2, as'shown at 44, to keep the plate 40 securely in when the push button is in place. place. 45

A compression spring I4 is located in the stem An externally threaded tube 45 is secured to of the push button I0. One end of this spring the metal plate 4I by one end passing through a bears against the end of the opening in this stem hole at the center of the plate 4| and being rolled and the other end is reduced in diameter to suror spun in place. A nut 48 with a knurled flange 50 round the reduced end I5 of a twisted flat metal 41 is screwed upon the tube 45. 5o lstrip I6.. This end of the spring bears against The device may be attached to a canopy by l shoulders on the strip I6 at the reduced end I5. unscrewing the nut 46 and passing the tube 45 A metal plate I1 closes the opening inthe push through a hole in the canopyand then clamping button I0 and has a slot lthrough which the the device against the canopyI by applying and metal strip I6 passes. The plate l1 isV provided tightening the nut 41. 55

When the switch or circuit closing member 28 is in such a position that the spring contacts 35 are in contact with the contacts 36 at the bottom of the recess 3 the circuit is closed through the switch. By pushing the push button I longitudinally the twisted metal strip I6 is turned because the plate I1 is attached to the push button IIJ and the extensions I3 sliding in the grooves 8 ,prevent the push button from turning, while the slot I8 in the plate I1 causes the strip I6 to turn. The turning of the strip I6 causes the switch operating member 22 to turn and the edges 21 of the member 22 contacting with the lugs 3I of the switch 28 cause this switch to turn circumferentially. This causes the ends 35 of the spring contacts 34 to move circumferentially along the contacts 36 until they snap off of the ends of these contacts on to the uncovered surfaces 6 of insulating material. The axial length of the recess 3 and the twist in the strip I6 are such that the push button I0 reaches its extreme inward movement about the time the contacts 35 have been moved o of the contacts 36.

,The spring I4 keeps the switch operating member 22 pressed lagainst the switch 28, but permits it to be turned backwards to permit the edges 21 to snap over the lugs 3I on the switch.

When the pressure is removed from the push button I0 the spring I4 returns it to its outermost position. During this time the strip I6 and member 22 are turned in the reverse direction a suiiicient distance to cause the next edgesuZ'I of the member 22 to rest behind the lugs 3l preparatory to moving the switch 28 again. During this reverse movement the switch 28 is prevented from turning backwards because the ends 35 Arest behind the shoulders 1 at the bottom of the recess 3. The circuit is closed by pushing the push button again.

I claim:

l. In a switch, an elongated body of insulating material having a recess therein, contact terminals extending into said recess to a position near one end of said body, a rotary switch to close a-circuit between said terminals, wires at the other end of said body, connections between said wires and terminals lying in grooves along sides of saidrecess, and switch operating means: cooperating with said' grooves for rotating said switch.`

2. In a switch, an elongated body of insulating material having a recess,therein, contact terminals located at the bottom. of said recess, a rotary switch to close a circuit between said terminals, wires at the end of said body near the open end of said recess, connections lbetween said wires and terminals lying in grooves along sides grooves and a push button having extensions slidable in said grooves.

4. In a switch, a body of insulating material having a vrecess therein having longitudinally extending grooves, electric conductors in said grooves, a push button having extensions slidable in said grooves, a rotatable switch insaid recess,4v

and means to cause said switch to rotate when said push button is operated. 5. In a push button switch, a push button, a rotatable switch, means to cause said switch to rotate when said button is pushed, said means comprising a spring in said push button and a1 twisted strip extending loosely into said push button and being pressed by said spring, K 6. In a switch, an elongated body of insulating material having an axially extending recess therein, said recess having axially extending grooves, contacts and a contact bridging member in said recess, a push button adapted to enter `said recess and move toward the bottom thereof.

- when it is operated and having extensions slid-.-

able in said grooves, andmeans operated by said -push button for making and breaking contact between said contacts ber.

7. In a switch, an elongated body of insulating material having an axially extending recess therein, said recess having axially extending grooves, contacts and a contact bridging member in said recess, a hollow pushbutton adapted to enter said recess and having extensions slidable and contact bridging memin said grooves, a plate having a slot therein attached to said push button, a twisted strip passing through said slot into said push button, and an operating member for said bridging member to which said strip is connected.

8. In a switch, an elongated body of insulating material having an axially extending .recess therein, said recess having axially extending grooves, contacts and a contact bridging member in said recess, a hollow push button adapted to enter said recess and having extensions slidable in said grooves, a plate having a slot therein attached to said push button, a twisted 'strip passing through saidslot into said push button, an operating member -for said bridging member to which said-strip is connected, and a spring in said push button to keep said strip connected to said operating member.

' FRANK TAUBNER.

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