US1904927A - Switch mechanism - Google Patents

Description

April 18, 1933. r R. POPP 1,904,927

SWITCH MECHANI SM Filed May 12, 1931 Patented Apr. 18, 1933 T D A. B ,Q F CE 7f RUDOLF, Port, or vanranarsol nnraiva, AssIGNon 'roMcerLI.. iw.a1v rAcruni1ve COMPANY, OFIVALPARAISQINDIANA, A oonronaw olv or INDIANA! e l 1 swiron nEcH NIsI Application illed nayfm,

. My inventionrelates to a switch mechanism and more particularly to'a connector device for actuating the switch mechanism. 1

In a socket or electric lamp switch it is customary to actuate the contact elements by avertical movement of alever or chain which 1s converted to a' horizontal movement througha universal connection.

An object of the invention is. to provide a new and lmproved universal connectiom j A further object is'to provide a simple and effective universal connection which is'economical to manufacture. .3 i=

A further object is to provide a universal connection which may readily and conveniently be assembled.

Other objects and advantages will appear as the description proceeds.

Referring to the drawing,

Fig. 1 is a plan'view of a switch partially disassembled and embodying the invention,

Fig. 2 is a similarviewwith the cover and top plate ofthe switch mechanism removed,

Fig. 3 is a side elevation partly in section of a device embodying the invention,

Fig. 4 is a perspective view of a connector used in the device, and

Fig. 5 is a sectional view taken on line 5-5 of Fig. 3. t

Referring now more in detail to the drawing, a switch mechanism is shown mounted between'a pair of insulating plates 12 and 13 of any suitable insulating material, which are spaced apart and held in position by a pair of posts 14 and 15. which extend through the plates and are upset at their upper and lower ends to clamp the plates and hold them in position.

A U shaped member 16 is upported between the plates 12 and 13 and has projections adapted to extend into these plates to hold the member in position. This member has a round collar 17 attached to its end, and forms a fulcrum or pivot for a tubular lever 18. Collar 17 has an aperture extending through its center through which an arm or stem 19 projects. The end of stem 19 is provided with a head 21 and carries a U shaped pawl 22. The stem 19 is continuously urged to the left as viewed in Fig. 2, by a spring 23, one

1931. Serial a... 536,823.

end of which rests against the base of shaped member 16, while the other end rests against thepawl- 22.3Pawl 22 engages a ratchet wheel 24 and upon reciprocation of the ratchet :wheel a toothed contact bridging member '24 is rotated. This contactbridging member isprovided with-aplurality of teeth it and, alternate teeth are provided with con ducting faces, all of whichare. electrically interconnected. Posts, 14 and l5'support stationary contact member 26, which engage. dia metrically opposite teeth of the contact bridging member and in one position of the. contact bridging member posts :14 and 15 are electrically inter-connected and in another position ofthis member. the circuit between these posts is broken. Each of these posts is provided with a screw 27 for connecting an electrical conductor tothe. posts to place the switch mechanism in an electricalv circuit.' The switch mechanism thusfar' described .is more fully disclosed in-my'copending appli-' cation, Serial #512,836, filed Feb. 2,1931. 1 In orderf to reciprocate thestem 19. and cause rotation of the contact bridging member, aconnector'28 is-pivotally connected to the stem 19 and securedwithi'n the tubular" I lever 18. -The connector comprises a pair of arm's 29-31 and a second pair of arms 32:533. The arms. 29 and 31 are connected at} their ends, and the arm 32 is connected to one end of arms 29 and 31, while the arm 33 is connected' to the other end of arms 29 and 31. The lower end of arm33 is formed into a loop 345 which passes through an aperture .in arm19to provide a pivotalconn'ection be; t'wee'n'the arm andtheconnecto'r." I'In a'ssm? bling this portionoftheswitch 'mechanism; 9

the 'arm' 33 is merelyinserted through theeye I let or aperture: in arm 19 and the end'links of the ball linkfchain35 are placed between the arms of the connector. The upper end of' arm 33 is bent inwardly as shown at 36to pre-x vent the ball' links fromv being withdrawn from the connector. The tubularlever: 18. is then placed over the ball link chain as, shown in Fig.1. -One side of the tubular lever is provided with a slot 37 andthelever is placed:

over the connector in such aposition that the.

slot coincides in: positionv v with arm '32. .As

ing therethrough just large enough to reamount of machine work in the manufacture of these parts. In accordance with the press ent invention, the lever mechanism may be assembledwithout the use of any tools of any kind. The invention further permits the tubular lever 18 to be drawn from sheet metal. The upper end of the lever is provided with a cylindrical portion 38 which has an openceive a link of the ball link chain. The other end of this lever has an annular flange 39 provided with a cylindrical extension 41, which fits in an annular groove 42 in base 17. This i groove together with the fact that loop 34 extends into the aperture in base 17 prevents the lever from being laterally displaced and insures a pivoting movement of the lever 30 when a tension is applied to chain 35.

It will be understood that the nature and embodiment of the invention herein described and illustrated is merely a convenient and useful form of the invention, and that many changes and modifications may be made therein without departing from the spirit and scope of the invention. 7

What I claim as new and desire to protect by Letters Patent of the United States is 1. An operating device for switch mechanisms comprising a tubular leverhaving a wall recess, a connector for attaching the lever to a switch mechanism adapted to be inserted into the lever from one end, and a spring catch for the connector adapted to snap into the recess to hold the lever and connector together.

2. An operating device for switch mecha nisms comprising a tubular lever, a U-shaped connector for attaching the lever to a switch mechanism adapted to be inserted by the forked end into the lever from'one end, said forked end being shaped to receive and hold a ball-ended chain when the connector is in the lever, and a-spring catch for removably locking the connector and chain in the. lever.

3. A pull chain connector for switch mechanisms comprising a tubular cap having a wall opening,a connector adapted to be inserted in the cap for receiving the chain at one end and connecting to the switch mechanism at its other end, and a spring catch for the connector adapted to snap into the wall opening to hold the connector and thereby the chain in the cap.

4. A pull chain connector for switch mechanisms comprising a tubular cap having a wall opening, a connector adapted to be inserted in the cap for receiving the chain at one end and connecting to the switch mechanism at its other end, and a spring catch for the connector adapted to snap into; the wall opening, to hold the connector and thereby the chain in the cap, said spring'catch being pressable inwardly clear of the wall through said opening to remove the cap and chain from-the connector.

5. An operating device for switch mechanisms comprising a universally operable tubular leverhaving a wall recess, a longitudinal connector for attaching ,the lever to a switch mechanism by one end and to hold a ball-ended chain in the other end when in-- serted in. the lever, and a spring catch carried by the connector longitudinally thereof and adapted to snap into the recess when the connector is inserted in the'lever, said catch having a free end edge'engaging the recess whereby any operation of the lever is against said edge of the catch to correspondingly operate the connector.

In witness whereof, I hereunto subscribe my name this twenty-seventh day of April,

- RUDOLF POPP.

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