US1652364A

US1652364A - Door-controlled electric-lighting switch

Info

Publication number: US1652364A
Application number: US566274A
Authority: US
Inventors: Joseph M Kern
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-06-06
Filing date: 1922-06-06
Publication date: 1927-12-13
Anticipated expiration: 1944-12-13

Description

1 be open.

llatented Een., l?, i927,

UlililEB STATES JOSEPH M. KERN, 0F OSWEGO, NEW YORK.

l DOOR-CONTROLLED ELECTRIC-.LIGHTING SWITCH.

Application filed June 6,

the switch is independent ot the door, theV light in the room to which the door leads is frequently lett burning` through inadvertence ot the user after leaving the room resulting in considerable waste of electric current, and the main object of my present invention is to avoid this waste byr making the operation oi the switch to open the lighting circuit leading to such room dependent upon the closing et the door, which is lessvliable to be forgotten by the use-r than the turning out ot the light.

Another object is to provide the samek switch boi: with means operable at will by the occupant ot the room tor displacing the door operated switch opening means when the door is closed and thereby permitting the switch to close to energize the lamp or lamps in such room and also to permit the last named means to be used for operating anek other switch opening device so that the light may be turned out even though the door may Other objects and uses relating to specific parts ot the device will be brought out in the following description:

ln the drawings:

Figure l is a top plan of one form of my door-controlled lightingswitch incorporated in the door casing shown in section and also showingl a portion ot a door tor controlling the operation of the switch.

Figure 2 is an inner tace view of the switch-box and mechanism therein with the inner cover plate removed.

Figure 3 is a longitudinal sectional view taken in the plane of line 3 3, Figure 2 looking toward the top oit the switch-box.

lligure l is a transverse vertical sectional view taken in the plane of line flfmt, Figure 2. Y

As illustrated, this device comprises a switch-box -ladapted to be installed in the door casing as A- or receiving and supporting a pair ot switch terminals -2- and -9/- of an electric lighting circuit in which is connected one or more electric lamps adapted to be placed in the room to which the door as D-f leads, said door be 1922.k ScrialNo. 566,274.

ing connected by hinge 0,- to the door casing -A- tor controlling the opening and closing ot the switch terminals -2- and -2 in avmanner hereinafter described.

The switclrbox -lis provided with a removable inner cover plate '-3-- held in place by screws A- or equivalent tastening means, the switchbox being also pro vided with a removable `end plate -5- which is also held in place by screws -6-. The switch terminals -2- and 2- are mounted upon an insulating block '-7- and are electrically connected to binding posts 8- and 8- which are secured to the block and form continuationus of thev terminals -2- and -2-,but are insulated from each other by spacing them apart on said block7 while the terminals 2* and -2- are normally spring pressed into electrical contact with each other as shown more clearly in Figure 3, thereby closing the circuit through suitable wires -9- leading to the electric light or lights in the cellar, bathroom, attic or other rooin where the light is to be controlled by the door, f

Thewend plate -5-q of the switch-box is provided with a guide opening -lO- for receiving a push-rod -l0--, which normally projects outwardly through and some dis- 'tance beyond said wal'l to be engaged and forced inwardly against the action of ya com-` pression spring -llby the closing ot the door -D-, said spring` serving to return the push rod when the door is open.

The block -7- carrying the spring terminals M2- and MQ- and binding posts -8- and -8- is inserted between one of the end walls as -5- and guide ribs -12- at the end ot the switch-box opposite the removable end wall -5- and push-rod -lO and may be removed for adjustment or repairs ot' the terminals when the cover plate -8-' is removed.

rlhe terminals -2- and -2- extend inwardly from the block -7- toward the push rod --l0- and their tree ends, which nor mally contact with each other under the spring-tension of the terminals, are adapted to be separated to open the switch by a suit able device carried by the push rod l0- when thev latter is Jforced inwardly by the closing of the door -D-- For this purpose, the inner end of the push rod is provided with an enlargement or head -l3- carrying a pawl leot insulating material which is pivoted at ela-e to ,said head and has its inner end --1G- wedge-shaped and normally alined with the nieetingg,` faces ot the terininals 2- and -2 so that when the push rod is forced inwzirdlyv against. the aetioiioi the sl'iring -li-, its wedge-shaped inner end -lt will be 'forced between the adjacent faces ot 'the terminals to separati-e them and thereby to open the switch and cle-energize the lighting circuit.

The spring; -ll-- for the push rod --l0- is interposed between the inner :tace ol: the head --l3- and a. stationar7 block 11'- on the lower side of the switelrbox, said bloel; being` provided with a Socket for receiving the inner end of a stein -1T- on said head and around wnich the .spring -llis coiled7 thesoelret serving as a guide for the inner end of the push rod -lO--.

lt, therefore, i'iolloiisI that when the door is closed, the pue-h roti 10H will be forced inv-ardlj,7 to open the switch terininals -2- und -2 and that when the door is open, 'the push rod will be toi ed outwardly by the Spring -llto perinit the tern'iinals to close one against the other.

The object in piif'oting;l 'the pawl 14tat -l5- to the head 13 is to pern'iit its free end to be forced troni between the terininals 2%- and '-2- in a. manner hereinafter described ifi/hen the door is closed and thereby to allow the terminals to close one against the other for energiZingI the lighting circuit in case the light should be required in the rooni when the door i s closed7 as 'iter example, when the neer is in the cellar or other rooin in which the light is located.

A flat retracting spring -l8e is Secured at one end to the end wall -5- olf the switch-,box and has its Vlfiee end bearing agains' the lower edge ol the pawl elfi to restore the latter to its noi'inal position when the push rod -l()- released b 'v the opening otvthe door.

Suitable'ni'eans is provided wherehV the ogenino` and Clot" b' ol" the ierinii'ialfI 2d and ef inail* i controlled at: the will o't' the` operator independeiilfly olf the door-operated push rod. 'ltte, Said ineaiis ifoiupl'`y ing' a secoiiilai5v push rod #lwhich is ieiiigiioenlljx movable in i, igniifle opening.;l 2l-m in the lii'ont wall Mlle# ol the sii'itigl'ibox at right angles to the direction ol' .uiovenient to the push rod ltl--7 said izeeoiiilai'y push rod being movable inwardly against the action ol1 a eon'ipifession spring` 2l/we and providet with a transverse slot just inside ol the iront wall -3- for receivino" one karin m23- ot a bell crank lever Qfl--e which is pivotedv at to a seuil;- ahle hose -2t3-- on the inside ol the front 'wall A--3- and hai: its other ai'in --52 adapted to engage a vpin at eoi; the adiai'eiit .side ol a movable bloeit nit/Le.

This bloot; 29M si. table 4vnisreisely ot the direction oit n'ioveinent of the push rod i/EO- and is proviifled with a guide stein -3Oi inovahle in a` Socket 31H on the lower wall ol the ,switch-box.

A coil .spring --32e- Asurrounds the interinediate portion ol the stern 30- hetween the sliding bloc-l; -2tl and lower wall or the ,switehhox tor yieldingly holding' the sliding block in its norinal position.

This block 29W is pro'i'f'ided with a downwardly projecting arin 33M whieh is adapted to engage a laterally projecting lugr 94ton the pawl -l-ltor tripping said pawl Ltroni between the terminals Q- and 2 when the push rod 10- is forced inwardly by the closing of the door and. the secondaryv push rod QON is forced iuwardly to cause the bell crank lever --Q' to operate the slidingl ibloel 29- and its arin against the lug -31l-.

That is, the arn'i -lt3- is disposed in the plane ot inoi'enient ot the lui; -oilbut is norni-all5y held out ot the path ot nioveinent of Said lug; by the spring but when the door is closed and the plunger -10- and luf@`l are inored inwardly to cause the pawl -llto open the switch terminals --2- and -2, said lug will be brought dii unt er or in the path of inoveinent of the ltti-in 233 at whieh time, the lighti'nig circuit wil he ile-energized and il' the .rater desires to energize :Paid circuit while rooin in which the light is loea'teth it is einiply necessary to push the rod 2ilinwardly against the action ol .its eoiiipression Y ringill/ therebli7 causing the "nii'ard niort-,nient ot the .sliding` ariii against the action ol the spring,y 3Q-f through the i'nediuin oit the hell crank lever --Q/lhy which operation, the ai'in erniinals 2M allow l; 2e to close one :i` loi' euri ditioiipa again the fiiiiiiiig M18-M lu New; in i: `vs while will alfffo be i turned to its noi-unil ponitioii iii alineinent with the terminals by tlie llat, spring --ltlM leaving the teii'ninals still closed.

Si table ineans is provided wherel'iy the terminals inalv he :'ejiiaii'ated to break the lie'l'itino' (,'ii'ruit when the doin) is open, and

interior ol the ffii'iti-t rox and haifiuggj its` i i v i -1 l ot Sie Dioiitleil ,with :i idr-,ide W559i lll) lli

registering with the meeting 'aces ot the terminals --2w and -2- at one side thereot for entrance between said' terminalspto separate the same lighting circuit.

In order that the pawl may be operated by the push rod -20-, the intermediate portion is disposed in the path ot movement of a shoulder eStl-on the inner edge of the sliding block m29 whereby when said block is operated by the inward movement oi the plunger-2O through the medium ot the bell crank lever Q4- the shoulder -39- will engage the upper edge ot' the pawl 35- to rock its free end downwardly upon its pivot -36- and thereby cause said 'tree end to enter between and separate the terminals -2- and --2- for breaking the lighting circuit independently ot the door operated push rod -10-.

lThe pawl -35 is provided on its lower edge with a shoulder -eladapted to project into the path oiE movement ot the inner upper edge of: the head -13- ot the push rod -l()- when the inner end of the pawl 35- is forced between the terminals -2 and -2 and the push rod *20* is at its extreme outward movement and it, therefore, follows that it' the door is closed to force the push rod -lO- inwardly, the inner upper end ot the head 1S- will engage the shoulder *a0* and thereby lift and hold the free end -38-- of the pawl -35- out of engagement with the meeting faces of the terminals Q and -2--.

and thereby to breakthe while the same inward movement of thepush rod l0-- will cause the inner' end 16- ot the pawl 14- to enter between the terminals to break the lighting circuit. It .it is desired to light the lamps while the door is closed and the operator is in the room 'to which the door leads, it is simply necessary' to push the rod w20- inwardly, thereby causing the arm -33- on the slidim;l block Q9 to displace the pawl .--14- from between the terminals and allowing the latter Ato close ior energizing the lighting circuit aiter which the blocks -29- may be returned by the spring --3Q- leaving the wedges 16M and --33 :it opposite sides oi' the closed tern'iiuals.

The arm -33 preterably made ot spring metal so that in case the push rod @Q- should be forced inwardly while the push rod is at its innermost position, the shoulder -34- would simply engage and deflect the tree end of said spring arm --33 against its own tension without liability ot breaking or impairing any, of the parts.

M `What I claim is zl. In a door-controlled electric light switch, a pair of spring-terminals normally tensioned to contact with each other for closing an electric lighting circuit, a push-rod carrying a pivoted pawl and adapted to be operated bythe closing ot' a door to orce the pawl between the terminals and thereby to break the lighting circuit, a spring for operating the push rod and pawl to permit the closing ot' the terminals when the door is opened, an additional. push rod operable at `will transversely of the movement et the Erst-named push-rod, and means actuated by the second-named push rod 'for separating said terminals and thereby breaking the circuit when the pawl ot the first-named puso rod is withdrawn from between the terminals by the opening oit the door.

2. In a door-controlled electric lighting switch, a pair oitI spring terminals of an electric lighting switch tensioned to normally contact one with the other, a push rod adapted to be operated in one direction by the closing of a door, a spring for returning the push rod, a pawl pivoted to the push rod and movable therewith between the terminals when the door is closed for separating said terminals and thereby breaking the lighting circuit, an additional push rod movable transversely or' the movement of the first-named push rod, means actuated by the movement of the second-named push rod in one direction for displacing said pawl trom between the terminals and thereby allowing the terminals to contact with each other for closing the lighting circuit when the door is closed and a spring for returning the pawl to its normal position when the iirst-named push rod is permitted to be returned by its spring when the door is opened.

3. In a door-controlled electric lighting switch, a pair of spring terminals of an electric lighting circuit normally tensioned with each other tor closing said circuit, separate pivoted pawls each movable to and from a position between the terminals for separating the same and thereby breaking the lighting circuit, a door operated push rod for forcing one of said pawls between the terminals7 means including a separate push rod operable at will for 'forcing the other pawl between the terminals when the `door-operated pawl is returned and a spring tor returning the door-operated push rod and pawl actuated thereby 4l. In a door-controlled electric ligl'iting switch, normally closed self-closing contacts ot an electric lighting circuit, a. pivoted pawl movable to and from a position between they contacts for separating the same and thereby breaking the lighting circuit, means including a push rod operable at will for forcing said pawl between the contacts, a separate push rod operable in one direction by the closing of the door, means actuated by the second-named push rod when operated by the closing ot the door for tripping the pawl from between the contacts and means actuated by the Secondniained push rofl when actuated by the closing of the door for separating said contacts.

5. In a door-controlled electric light switch, a pair of Springterminals normally tensioned to cont-uct with each other for closing un electric lighting circuit, a push rod having zt pawl adapted t0 be operated by the closing elf ay Cleor to torce the pztwl between the terminals and thereby tobreak the lighting circuit, u spring for operating the push rod und paw] to permit the closing of the terminals when the door is opened. and a movable nicinber Operable :it will :for Sepurating Suid 'terminals and thereby breakingr the circuit when the puwl et Suhl push red is withdrawn freni between the teriiiinels b v the Opening et the deer.

ln witness whereof I have hereunto sci; my hund this 29th clay el? May 1922.

JOSEPH M. KERN.