US997564A - Rotary snap-switch. - Google Patents

Description

- S. KORF & R. WITZ. ROTARY SNAP SWITCH.

- APPLICATION FILED JULY 30, 1910.

Patented July 11, 1911'.

3 SHEETS-SHEET1 nuwwi zd S. KORF & R. WITZ.

Patented July 11,1911.

3 SHEETS-SHEET 2.

attomu s. KORF & R. WITZ. ROTARY SNAP SWITCH. APPLICATION IILIZD JULY 30; 1910.

Patgnted Jul 11, 1911.

3 SHEETS-SHEET 3.

iinirnn STATES rannr cur os.

i somatic cuit of the series can be broken as to make "onbreak the circuit to any desired number oft-he lamps; to provide. a device that may be operated by' a single pull-chain and thus obviate the necessity of employing a chain 'or'key for each lamp; and to enable the operationot the device by successive pulls upon the single chain.

.The invention is particularly applicable to J the control of tungsten lamps which are 25 usually arranged in clusters, and also to v lamps which are socketed in lighting fixtures.

' Thc'preferred embodiment of our inven- "'tion hereinafter described and illustrated 30 in the accon'ipanying d'awings.

In these drawings, Figure 1 is a side elerationof a dome within which the invention is held Fig. 2 is a side View of the disk or plate in which the bulb sockets are removably held and of the lamp operating mochanism wl'iich is secured to said plate; Fig. 3 is a plan View thereof; Fig, i is a plan View oi the box containing the operating mocha- ,nisin but with the upper section of the box removed; Fig. 5 is a similar View with the ratchetwheel and the parts above the same Temovedyhig. 6 is a vertical. section showv ing particularly the lowermost contact strip; "Fig. 7 is a vertical section through the ,rabhet wheel neniber; Fig. 8, a detail pericctire o" the ratchet wheel contact band; .lfig. l), a side elevation showing the invention applied to a residence lighting fixture; Fig. 10, a plan view thereof and Figs. 11 and 12 are vertical and horizontal section yiew's of such device. I

vFaster-ring to the drawings and particularly to Figs. 1 to. 8, i1 1clusive, the deviceis shown in connection with a tungstenlamp.

' sai /inst Konr AND ROBERT wrrz, or onroaeo. ELECTRIC COMPANY, or CHICAGO, rumors. a oonrona'riozi or rumors.

ROTARY SNAP-SNITCH.

Specification of L ettcrs Patent. i i Application filed July 30, 1910. Serial No. 574.710.

- ride a device in which the continuous cir-' rumors, Assrenons "120 THE WI-KO Patented m ii, on.

1 is a dome to which ashade is preferably I secured although not shown. -.iVithin the dome v,rea'iovably held a reflector-and socket carrying plate 2 in which are removably secured the sockets 3 for the electric incandescent lamps 4, 5, 6 and 7. 8 is a box which is made into an upper and lower sec tion and it is preferably of porcelain, although any suitable on-conducting inaterial may be used. 'lhemechanism for controlling the elect ,circuit to the lamps is incasc'd within thi box. Referring to this in.ecl1anisin,'9 is a hollow post towhich is connected a member consisting of the tubular part and the ratchet wheel 11. ,This member is made of a non-conductingniaterial such as rubber or fiber. Surrounding the tubular part 10 is a .metal band-1E2, the lower portion of which is constantly in confact with a strip 13 connected by a screw 14: to a terminal 15 to which is connected by a binding screw to one of the wires of the electric circuit. At the upper part, the band 12 is cutaway so as to provide a semi-circular portion 'lG which is of slightlyfgreatcrheight than the lower part of the bandand'it-o expose a portion 16 of the. tubular non-con ducting part v10. Terminals 17, 18,- 19 and 20 are adapted to establish a circuitfor the lamps through the spring 'Inetal conductor strips 21, 22-, 23 and 24: contacting-with the part 16 of band 12. 'Ascparate wire 25 is provided for each lamp to formithe second wire of the circuit-itor each lamp and itis connected to the binder :p'ost' which'contacts with the strip adapted to make the circuit for the lamp by a binder screwy'and'also to such lamp through the socket. All the wires except the wire leading totcrininal are in contact at 25". 'Each ofthe Contact: strips and the respective terminal with which it is in circuit are secured together and to-the box by a screw 26; 'l he terininals 151,17" and 20 are provided with a plate, 27- attheir top :which has ascrew-threadedopening therein to receive the screws 2-8 which secure the sections together. Bolts 29 seeurethe box as a whole to the platefl. Preferably made integral with thespring nietal strip Ellis a detent pawl 30 for theratchetwheel ll. Loosely mounted on the post 9 "above the ratchet wheel'is a plate lwhich has an arm 32 to which thepawl ii is pivoted,-whioh pawl is adapted to move the ratchet forward when operated. A spiral spring 34: held within the hollow post 1 keeps'the pawl and ratchet in engagement and returns the plate after an operation of the device. An operating pull chain 35 is connected to an arm 3-"; of the plate 31 and a pull thereon will move the ratchet one tooth. Stop pins 37 a 0 provided and the arm 36 is adapted to abut against the same to limit the revolving of the ratchet wheel. The circuit is adapted to be established for the respective lamps by the contact of its conductor strip with the semi-circular part 16 of band 12. It will be seen that in a cluster or series of lamps that the lamps thereof will be lighted whose conductor strip is in contact with part 16 and that those lamps will be out of circuit whose conductor strip is in contact with the non-conducting part 16. Any number of lamps may be employed and a conductor strip must be provided for each lamp and suitably wired as are the lamps shown.

The device is adapted to be operated by successive pulls upon the chain 35. Assume that none of the lamps are lighted. The conductor strips are all contacting with the non-conducting part 16. To light a single lamp, the chain is pulled once, which causes. the ratchet to revolve one tooth .which brings the part 16 into contact with the strip 21 which lights the lamp l. Upon a second pull, strip 22 would establish a circuit for the alternate lamp 6 and upon a, third and fourth pull the strips would establish a circuit for the alternate lamps 5 and 7, respectively. The lamps are thus all lighted. To break the circuit,-the chain must be pulled once for each lamp so as to move the part 16 out of contact with the conductor strip.

It is obvious that the contacts and wiring may be so arranged that any number of lamps may be lighted as are desired, and it will be noted that the entire mechanism is operated by a single pull-chain. G

- In Figs. 9 to 12, inclusive, the switch is shown as mounted in a residence lighting fixture. At the base of a vertical pipe arm 38, from a central coupling 39 radiate pipe arms 40 to the outer ends of which are connected the lamps or bulbs. A plate 41 is removably clamped against an extension 42 of the coupling 39. Bolts 43 adapted to clamp the plate against the extension, pass through the plate and have hook cnds .adaptedto engage the arms 40. Upon the plate is secured a box 4. 1 within which is located the improved switch mechanism. The switch box is made in two parts with the lower or main part supported on the member 41 and the upper portion 44 secured to said l0wer-part and adapted to receive by means of a-socket or aperture the lower end of the arm 32 of the rigid fitting of the fixture. The box in the case of this form of fixture is preferably round. An inclosing shell member is composed of the upper and lower sections 15 and 46. Cov ering pipe arms 4:7 for the arms 40 are screwed into the section lo. A tube 18 is secured to the plate 11 and extends through and beyond an opening in the section 46, the section being secured in place by the threaded engagement of a knob tt) with the lower end of the tube. The pull chain 50 for the switch passes through and is guided in the tube. The device of Figs. 9 to 12, inclusive, forms the subject matter of an application divided from this application and filed by us on February 23, 1911, for an electric switch fixture, which divisional application bears the Serial Number 610,354. The switch mechanism in this form is similar to that of the other form. The wires are necessarily longer, however, and pass through the pipe arms to the lamps.

The lighting of the lamps in both devices alternately as shown is not an essential feature as any combination of lamps may be successively lighted by suitably connecting the wires.

It is clear that we may vary the details of construction of our device or make any changes within the spirit and scope of our invention.

Having thus described our invention,what we claim is:

1. In an electric snap switch in combina tion with a series of electric lamps, a removable box made of non-conducting material and adapted to contain the switch mechanism, separate contact strips for the lamps, a circuit controller in said box adapted to successively contact with the different strips, said box having openings formed in its side wall to accommodate the strips and wiring and adapted to. receive the wiring and support the switch mechanism upon the same side thereof leaving a plain smooth surface on one side of the box whereby the same may be attached to different forms of fixtures, substantially as described.

2. In combination with a suitable shell, a lamp supporting plate adapted to receive a plurality of lamps, a removable self-contained switch adapted to be mounted on the inner face of said plate and having a switch box provided with a flat, plain surface andcomposed of two separable switch inclosing members in combination with wiring and contact strips leading to the different lamps and a common circuit controller for successively lighting and for successively extinguishing said lamps mounted within said box and operating said contacts, means for operating said controller and a pull chain connected to said operating means and passing through the box and through said plate, substantially as described.

3. In a lamp, a shade holder, a removable tion with the lamp and the operating 10 plate therein, electric lamp sockets removmechanism, substantially as described. ably secured to the plate, an operating In testimony whereof We have aflixed our mechanism containing device having an upsignatures in presence of two Witnesses.

'. per and a lower section removably secured SAMUEL KORF.

to the plate, lamp operating mechanism ROBERT WITZ.

within said device, a single pull chain for Htnesses:

operating said device extending through the H. Lon'rznnron,

plate, and electric circuit means in connec- F RED S. Loon-11s.

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