US988507A - Lamp-socket switch. - Google Patents

Description

, Patented Apr. 4, 1911.

' spring is provided tot supplying the neces- To all. whom :itfzfnay concern:

HENRY E. BEEVE, 6F NEW YORK N. Y.

Be it known that I; HENRY EL RE-EVE, a

citizen of the United States, residing at New York ihthe county of Kings and State and useful; v p

Switches, of which the following-15's specic I cam. Flg. 7 1s a fragmentary perspective o'if how York, have.ilivent'ed'certeil new Improvements in Lamp-Socket ficetio t v My ihve tion relates. to 1m roveme itsm electric1 swltches and .particmlzgly for incendescbi telectric lamp sockets and the like 'Switchesrhaving spring contact ai ms and po cela operating member or cam mounted in e porcelain hasehave many addrawbacks here, the; spying arms are'ofsutfieiei tstrength-to give a quick break 011- vantagcs but heretofo e: have had serious Hltilp action the metal of the arms'is'ep-t to i he (i -own of? on to the surface of thecam struction, which and causes short citcuji'ts; The greatsti ai-p brought upontheenchore e of the switch arms; often breaks the porcgain. base and the power sufiicieht. to: turnTthe po 'celain cam against the resistance of the spring contact arms sometimes. breeks'the cam.

' It is my ppincipaleb'ecfi'to ovetcome these bi ma as e einefi forth a d Sepure a compact but"strong' 'ami durableeonhas e1; posit-iwi and reliable anti en.

I accomplishing filmy. prefer I ably'foi m the pose n txyo pe qtsog-e-ofwhmb j carries the Wire terminals, stetiolmizy c ntacts on?! the her at i jhiligfceli i s the lamp terminals end f wifl mteet a m These contact armsf are." sec uredigin piece Without the use of screws.(andtheqoperation "joftlgxeswitch does not subj ecttheaporcelam tozmy substantial. strain. Thecontect arms are lopei'ated by a'cem and a supplement-a1 "sary power to effect e'quick break of the circ it, This power spring is socopstructed material strain. I

lugs illustrates the preferred form of thein:

ventiem V Figure lfisen end Ti of the Wire i361 initial ca 'ryiing portion of the base. Fig. 2,

longitudinal 1 sectionof the base switch'on the plane of the line X X of Fig.

,llooking in the direction of the arrow. Fig;

3,- ;is an end, View of thelamp carryi g part of the base. Fig. 4, is an inside View of the iy'ire terminal carrying part of the base.

Specificationofietters Patent.

2 Annli a'tion filed May 14,

"Fig." 5, is en inside View of the leinpwter I LAMRSOCKET swmcHQ 1910. Seria1,No.561,z;

View showing the constri'iction by which a of the switch.

of insulating m e ia such as porcelain-and referred to 0; conven ence as fporcelm y mats? and 8, located infill int ig the part 1.: s A threaded,

lamp termimei 9 secureclto secure the two. parts of the bflSQLtDEQt-MI- The central spring lam-p terminal 121mg 2.

plate or support 13ysec11'1ed a s rew 14. The spring c ntectarm 15- and 16 V respectively are scoured tothsf and the bottom of the temp te -mir 7 QL efembly as shown mFlgst. Zend v E s ri germ for instance, 33,16, has. foot 1; turned etf sobstantiallyTight angles thercs toend an elbow 18 terminating in a tip 19. The support, suchesthe base of fil l mp te minal 9, has a Welling '2 of ubstantiallyth cross section of the elbow 1.8.. To afisemblethe spring arm and its support the tip, 19 is introduced from the-bottom upword through hole 29 and the spring arm th n turned so.- the th lbow" 18 is in he support 9 and the footl? be ng hent l;v the edge of, the'suppert 9 as shown 2. Th om. 21 between the ar 5 1 =so proportionedm d 21 when intheir assemb d p s tion.

Theshafit 22 ordinarily called the p or Y operating shaft passes freely through one or more projections 01' lugs such 31's. 23, 23 which have a limited amount oi lost motion in an opening in the part 24L which I will call the operating cam. This operating cam is formed preferably fromsheet metal spring coI ta-ct arm isinountetl. Fig. 8,:is' a perspect ve view-oi operatmgmembc The part 1 has the two. Wire ter mnals. 3 and;

4 secured to it bythescrews 5 and fi- IIt =/spe1 .;r tively. Integral preferably with wire- 1 terminals are-the two stationaryswitchflfifiniw he P r -2 by" hole 20,. the p 19' th n' resi s on top 1 the.

key shaft Patented 1154, 1911.

-1 and 2,, are the parts of the hose structlii'e it h hos y the bo ts 1.0- nd 11 which @lso lite13 I s5 holds the a ms apar ithe spningsrm being shaped,- ts to exert a slight pressure against the si s o'ithe cam the cam 21. The shaft 22 is provided-with and has its cnds such as 25 bentparallelwith the shaft 22 and fitting easlly 1n recesses 1n the flange 26. The cam 21 and flange 26 are prefer-a 1y formed of one piece of porcelain. To prevent the shaft from being withdrawn from the operating cam 24 I provlde one or more projections or lugs such as 27 which do not however interfere with the par-. tial relative rotation; of the shaft and cam. Pressing against the sides of the cam 24: are the sprlng arms 28, 28 which are preferably the opposite ends of a piece of spring metal such as phosphor-bronze .bent in the U- shaped form as, shown in Fig. 6. These arms press equally against the opposite sides of the cam. 24 when the switch is; in the. off position. T v v When the operating shaft 22 is rotated from the position shown in fall line in Figs; 2, 5 and 6 to the'position shownfin dotted lines in Figs. 2 and 6 the cam 24is rotatedwith the shaft and forces the spring arms-28, 28 apart. As the cam 241 is turned the pres sure of the Spring arms 28, 28'causes the cam to be snapped suddenly .over. into the dotted line position. The porcelain flange '26 and cam 21 turn ,Withthe cam 24 and cause the,

spring contact arms 15. and

1,6 to be forced outwardly-into the dotted-lineposition of Fig,

2. The spring contact arms made of rial so are preferably;

power spring arms 28', 28 are however mu ch. stronger-so that a very quick,

heavier and and powerful action is obtained. Since the switch contact springs 15 and lfiexert butlittle pressure on the porcelain cam 21 there 'tically no strain whateverb is very little or practicallyno tendency to wear off the material of the springs onto the surface of thecam 2l and thus capse the short circuiting which mayo'ccur vin other types of switch. Therelis no currentof course passing through the key shaft "or power spring or power mm of: this inventions Since the switch contact arms pressure there is verv little strain uponl'th'e porcelain part of .the operating inembert practically all the stra-in of turning the 'oper-gi ating shaft 22 being exerted through the. the power spring. 'As there is but little pressure u'p'o'n'lth'e contact springs. 15, and 16, there -is' power cam 24 in moving strain upon the su portsand 9 porcelain bythe oper'at he operating or powen-sprin fastened to the. parcel in .at -a ll', b

beingflocatediin a recess'fin'fthebas'e' celain base formed in two separableparts, a 1 pair of wireterminals and stationary switch comparatively thin'and light mate o t arms, that but little pressure is 'exerted'I upon the switch cam-21.; The operatingpr V I connectlon wlth said:

spring i n' the opposite side of said recess, an operating device cooperating contact arms and sulating member between said arms and said exert but little I g @Pmtmg Shaft d evice are.

s s-@iew .ing-flange between sai I 'jing shaft.

- g s u I, -.8. In an electric 'switeh, -a; non-condemns 12 5 mg symmetrical. alighti"Vertical-axis prac v s having]openingsaswitch co obvious that changes enemies; v ang me f 'eian I design of the parts may be made without 'd'eparting fromthespiritorscope of my in vention as set forthinfthe clan ns 'What I claim is I 1'. A lamp socket switch comprising a porcontacts carried by one of said parts, lamp terminals and sprin contact arms connected thereto carried g the other part and adapted -to engage t e stationary contacts,

carried by the first part and a. device, for

operating said spring contact armsto force them into engagement with. said stationary contacts and. topermit them to bmdisengaged therefrom by a snap break anda,

. power spring held in a recess between the parts of said base for giving the snap action and means for securing the :two I parts of said base together.

2. In an electric switch,.a pair of light' spring contact arms, a p'orcelain cam between said arms, a second cam "connected with said porcelain cam and a strongfpower spring engaging said second earn.

3. In an electric switch, a pair of spring contact arms, a 'porcelain cam cooperating therewith, a power spring, acam cooperatin'g therewith and a porcelain flange between said cams.. Y

A. In an electric switch,

a pair of spring an operating cam therefor, an operatlng' shaft, a metal cam connected to said operating cam and having a lost-motion 'shaft and a power spring .cooperating with said metal cam.

. 5. In, an electric switch, a porcelain base formed in twoparts and ,having' a recess between the parts, a pair of spring contact arms 1n one,'side. of said recess, a power I with said sald power spring, an msaid operatin device.

6. In an e ectric switch, switch'contact spring and an operating shaft connected to for a-p wer cam connected with .said shaft andfa U shaped power'spring having its endsturned inward and ,co6perat ing with 115 said 'power cam;

1;" 17;-.'In an electricswitch, a base formed in two partshaving areess between the parts, contact arms in one side of said recess, it

- ower' spring in the other side of "said .cess,cams, cooperating withsaid contactarms and said powersprin Tand -a con-conduct cams and; an operate.

a el'amp terminals connegfi d m m n Feet-smash;

. s i parasite surfaces 9. In an electric'lswitch, a contact arm, a

porcelain operating device therefor having With-"said metal device recesses, a metal device having; portionsextending into said recesses, a spr ng coacting and means for turning sald metal device.

10. In an electric lamp sock-et switch, a

lamp terminal having a hole 20, a switch ing said cam, bearings therefor, a secondcam on said shaft operatively connected with the first cam and a two-armed power spring having its two arms coacting with said second cam. a c

12. In an electric switch the combination of a two-part insulating having .a recess formed between the parts, two wire terminals 3 and 4 carried by one part of the base at the sides of the baseand exterior to said recess and having extensions forming StittlOIlflI'Y' switch contacts 7 and 8 inside said recess, contact arms 15 andlG carried by the other part of the base and adapted to engage said stationary contacts respectively,

acam 21f0r pressing said arms against said contacts and means for operating said cam.

13. In an electric swit h, the combination of am insulating base, a contact arm, a ram for movingsaid'arm, a power cam operatlvely connected Wltll said last cam and a two-armed ower s )rin coactin r with said P l g 2:

.power cam, said base having a recess in which said spring is placed and heldby reason of the shape of said recess alor 14;. Inan electric switch, a power cam and a power spring coacting therewith, said spring being formed of a strip of metal bent U-shaped and having its two ends extending down inside substantially parallel with the sides and near the bottom whereby each side with the extended end constitutes in effect a bow spring and substantially equal pressure/is exerted by each end upon the power cam.

. HENRY E. REEVE.

Witnesses: I Ron'r. S. ALLYN, E. BRADFORD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatmm Washington, D. Q.

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