US1757709A - Electric switch - Google Patents

Description

May 6, 1930. A. H. FLEET 1,757,709

ELECTRIC SWITCH Filed Feb. 13 1920 Patented May 6, 1939 warren stares meme PATENT orriica ARTHUR FLEET, OF MILWAUKEE, WISCONSIN, ASSIGNOR, BY MESNE ASSIGNMENTS, TO CUTLER-HAMMER, INC., A CORPORATION OF DELAWARE ELECTRIC SWITCH Application filed February 13,1920. Serial No. 358,418.

cord and also having a conductor passage leading from each of said openingsto the switch mechanism.

One object of the invention is to provide a switch of the aforesaid character wherein the switch parts and conductor passages are arranged in the casing to facilitate manufacture, assembly, inspection and wiring.

. Another object is to provide a switch of the aforesaid character having its casing flattened to rest in given positions and having its operating member or members arranged for ready accessibility and convenient opera tion.

Other objects and advantages of the invention will hereinafter appear. a The accompanying drawing illustrates certain embodiments of the present invention which will nowbe described, it'being under.-

stood that the inventionis susceptible of embodiment in other forms without departing from the scope-of the appended claims.

In the drawing,

Figure 1 is a side view of one form of switch; K I

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1;

Fig. 3 is a view similar to Fig. 1 with one section of the casing removed;

Fig. 4 is a view similar to Fig. 3 with parts of the switch mechanism removed;

Fig.5 is a view of a modified form of swtch with one section of its casing removed; an

Fig. 6 is a sectional view taken on line 6 of Fig. and showing both sections of the casing.

Referring a snap switch mechanism a of the push but- -p0se stated.

to Figs. 1 to 4, there is illustrated ton type disclosed in Patent No. 1,184,104, granted May 23, 1916 to C. J. Klein, saidmechanism being enclosed in a two-part in sulating casing comprising sections 1) and 0, said casing having a cross section of material- 1y greater length than breadth. The casing,

which is preferably formed of molded insulation, is divided along a plane extending lengthwise of its cross section and its sections are recessed to receive the switch mechanism and its push buttons therebetween, while the faces of the casing parallel to its plane of division are preferably flattened for the pur- The switch mechanism comprises a slotted reciprocating member 10 provided with hill and valley cams 11 and 12, a fixed stud 13 straddled by said member, a contactor 14 oscillatably and slidably mounted'on said stud and provided with downwardly projecting knobs 15 and 16 engaging said cams and a helical spring 17 surrounding said stud to I yieldingly hold the contactor in engagement with the cams. Thei contactor is thus 0scilla'ble w1th a snap action upon reciprocation V of the member 11 which is provided with push button extremities 18 and 19, said contactor being so operable to make and break circuit between stationary contacts 20 and 21 secured'to terminals 22 and 23 respectively.

The above described switch parts are all mounted on section a of the casing, the two sections of said casingbeing recessed to receive said switch parts therebetween with the terminals 22 and 23 positioned centrally of said casing. Also the sections of the casing are recessed along the plane of division thereof to provide adjacent to the terminals a chamber 24 to receive circuit wires, said chamber having at opposite ends openings 25 and 26 each to receive a multi-wire cord. Further, the casing sections have interior abutting portions 27 and 28 located between the terminals and provided with a passage to receive a screw 29 adapted to be threaded into a socket 30 in section 0 to secure the sections together.

The arrangement is such that one wire 31 of a two-wire cord 32 may be passed through the casing parallel to the axis ofthepush buttons while another wire 33 ofthe co'rd I may be severed and its severed ends respec at one side of the movable parts thereof and tively connected to terminals 22 and 23 to include the switch a in series in one side of the circuit. Also the arrangement and dimensions aresuch that said connections may be a direction parallel to said passage, said switch mechanism having terminals mounted between the latter and said passage at points adjacent to said conductor openings.

In witness whereof, I have hereunto subscribed my name.

ARTHUR H. FLEET.

31 will thus tend to relieve strain on said connections.

Referring to Figs: 5-and 6, the switch shown therein is in all essential respects identical with the switch above described except that the parts are arranged and proportioned to provide slack in the through wire while the casing sections are provided with lugs for reflexing the through wire to take up the slack therein and afford strain relief for the switch connections- In this instance the casing section 0 is provided with two interior lugs 34 and 35 over which the wire is passed while the casing section b is provided with an interior lug 36 disposed between the lugs 34 and 35 to bear upon and deflect the wire between the latter lugs, as best shown in Fig. 6. Also, the casing section 0 is in this instance provided with a lug 37 to deflect the through wire to pass over the lugs 34 and 35.

electrically continuous conductor through i said casing in a straight line and of another wire the severed ends of which are respectively connected to terminals located inter: mediate said chambers, a snap switch mechanism positioned within the other of Said chambers, push-buttons extending through. said other pair of alined openings for operating said mechanism, and abutting portions located intermediate said terminals to provide for securement of said sections by a single fastening means. 2. An electric switch for attachment to cord connectors comprising a two-part insulating casing of substantially rectangular contour provided with a passage for an electrically continuous conductor, said passage terminating in openings adjacent to one edge of said casing, each to receive a plurality of wire conductors, and a snap switch mechanism enclosed within and supported by said casing, and having push buttons movable in

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