US1448033A - Electric switch - Google Patents

Description

Mar. 13, 1923. 1,448,033.

. C. G. NELSON.

ELECTRIC SWITCH.

FILED Mmm. 22. 1922.

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n Ill l mmmmmmmmm mmmmlmmmmmmmm mmm y mmm Patented ar. 13, 1923.

CARL G. NELSON, 0]?v ELECTRIC Application led March 22,

' present improvement has forits object:

To provide a structural formation and association of parts in Which a single reciprocating push button or plunger is adapted to rock a pivoted switch member alternat/ely in opposite directions to alternately move the contacts of the mechanism into and out of electrical connection, all as will hereinafter more fully appear.

In the accompanying drawings Fig. 1, is a central sectional elevation of an electric switch embodying this invention.

Fig. 2, is a side elevation in a direction at right angles to Fig. 1, and with partsl broken away and in section.

Fig. 3, is a horizontal section on line 3-3 Fig. 1.

Fig. 4, is a perspective view of the movable switch member and its supporting standard in detached condition. Like reference numerals indicate like parts in the several views. A

Referring to the drawings, 1 designates the enclosing housing of the.v switch -of any usual and suitable .formation and preferably comprising a supporting bttom or base plate 2 of insulating material, a barrel portion or shell 4, and a face or attaching plate 3 as shown, and as usual in the present class of switches.

5 designates a centrally arranged push button or head moving in a guide orifice in the face plate 3, and preferably formed with an expanded guide skirt 6 moving in contact with the inner face of the barrel 4 so as to be additionally guided thereby.

7 designates an inwardly extending rib on the barrel 4 and havin engagement in a marginal groovein the a oresaid skirt por-' tion 6 of the push button to' hold the same against rotation while permitting free reciprocation thereof.

8 designates a depending tubular stem CHICAGO, ILLINOIS.

SWITCH.

1922. Serial No. 545,674.

xedly secured to the push button 5 With its bore .adapted for sliding engagement with a fired spindle 9 on the base plate 2 aforesai 10 designates a coiled spring encircling the spindle 9 and interposed between the base plate 2 and the tubular stem 8 to maintain said stem and thepush button 5 in a normal outward position. Y

11 designates a sleeve rotatively mounted on the inner` end of the stem 9 and carrying a laterally extending pin or fingerv 12 by which the movable switch member is rocked from one position to another, as hereinafter more fully described.

13 designates a terminal bushing secured to the insulated base 2 and carrying a resilient contact member 14 of anyl ordinary form.

15 designates a companion terminal bushing also secured to the base 2 in insulated relation to the aforesaid bushing 13 and carrying a Standard 16 which in the present imz provementis provided with a' loop portion 17 of an angular form as shown in Figs. 1 and 4, within which the aforesaid lateral pin 12 has play, so that in the final outward movement of the push button 5 and its parts the on' the standard 16 formed with embossed ends 19 for frictional holding engagement with the movablecontact member to be described.

20 designates the movable contact member now of a. plate form, piv'otcd at its midwidth to the'standard 16 and provided at member in either position to which it hasy been moved.

v In the present construction the upper end of the movable member 20 is formed with a centrally arranged V shaped angular eXtension 23 and With hollow bearing recesses 24 at the respective sides of the contact member and at the base of the inclined faces of the extensions 22, as shown. With the described construction, and in a normal or rest position of the switch parts, the lateral operatingpin 12 will in a preceding outward movement, reach the apex of the loop portion 17 and have moved into central transverse relation to the other parts of the mechanism. ln such described position of the parts the apex of the V shaped extension 23 of the movable switch member 20 will lay to one side or the other of the transverse central plane of the mechanism, depending upon whether the movable contact finger 21 of said member is in or is out of contact with the stationary contact member 14 aforesaid.

With a downward movement of the push button 5 and the operating pin 12 moving therewith, said pin slides along the inclined portion' of the extension 23 which is in its path until said pin reaches the bearing recess 24 at the base of said inclined portion. Further movement of the 'pin 12 will then rock the movable contact member 20 to move its contact finger 21 into or out of contact wit-h the stationary contact member 14 as the case may be. ln such movement of the contact member 20'the apex of the extension 23 will assume a position to the other side of the central transverse plane of t-he mechanism from that above set forth and be in proper position for a succeeding operation of the mechanisms.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent, is

1. In a switch, the combination of a support, a push button mounted for reciprocation of the support, a lateral operating pin revolubly carried by said push button, a stationary contact member mounted in an insulated manner on the support, a standard mounted in an insulated manner on the support and provided with a loop portion of an angular form adapted for engagement with the aforesaid lateral pin to position the same, a rocking member pivoted on. said standard and carrying a contact nger adapted to have contact with the aforesaid stationary contact member, said rocking member having an angular extension at its upper end arranged in the path of the lateral pin aforesaid and side bearing recesses at the base of the inclines of said angular extension, and a spring for moving the push button and associated parts in one direction 2. In a switch, the combination of a sup-i port, a push button mounted for reciprocation on the support and provided with a lateral operating pin, a stationary contact member mounted in an insulated manner on the support, a rocking member pivoted on said standard and carrying a contact finger adapted to have contact with the aforesaid stationary Contact member, said rocking member having an angular extension at its upper end arranged in the path of the lateral pin aforesaid and side bearing recesses at the base of the inclines of said angular extension, and a spring for moving the push button and associated parts in one direction, said standard having resilient fingers formed with embossed ends and the rocking member having depressions adapted for frictional engagement with said embossed ends of the resilient fingers.

3. ln a switch, the combination of a support, a push button mounted for reciprocation on the support, a lateral operating pin revolubly carried by said push button, a stationary contact member mounted in an insulated manner on the support, a standard mounted in an insulated manner on the support and provided with a loop portion of an angular form adapted for engagement with the aforesaid lateral pin to position the same, a rocking member pivoted on said standard and carrying a contact finger adapted to have Contact with the aforesaid stationary contact member, said rocking member having an angular extension at its upper end arranged in the pat-h of the lateral pin aforesaid and side bearing recesses at the base of the inclines of said angular extension, and a spring for moving the push button and associated parts in one direction, said standard having resilient fingers formed with embossed ends and the rocking member having depressions adapted for frictional engagement with said embossed ends of the resilient fingers.

4. lfn a switch, the combination of a support comprising a base plate, an attaching plate and an intermediate barrel, a movable push button moving in said attaching plate and having an expanded base portion in sliding engagement with the inner face of the aforesaid barrel, a stem fixed to and moving with -said push button, a lateral pin revolubly carried by said stem, a stationary contact member .mounted in an insulated manner on the support, a standard mounted in an insulated'manner on the support and provided with a loop portion of an angular form adapted for engagement with the lateral pin to position the same, a rocking member pivoted on said standard and carrying a contact finger adapted to have contact with the aforesaid stationary contact mem- I mesma port comprising a base plate, an attaching plate and an intermediate barrel, a movable push button moving in said attaching plate and having an expanded base portion in sliding engagement with the inner face of the aforesaid barrel, a tubular stem fixed to and moving with the push button, a spindle fixed to the base plate and having guiding engagement in the bore of said tubular stem, a lateral pin moving with said stem, a stationary contact member mounted in an insulated manner on the support, a standard mounted in an insulated manner on the support, a rocking member pivoted on said stan lard and carrying a contact finger adapted to have Contact with; the aforesaid stationary contact member,Y said rocking member having an angular extension at its upper end arranged in the path of the lateral pin aforesaid, and side bearing recesses at the base of the inclines of said angular extension, and a spring` for moving the push. button -and associated parts in one direction.

Si ed at Chicago, Illinois, this 18th day of arch, 1922.

CARL dnniisou.

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