US1075365A - Electric-lamp attachment. - Google Patents

Description

W. P. MONEEL. ELECTRIC LAMP ATTAGHMENT. APPLIoATIoN FILED APB. 2a. 1912.

Patented 0@6.14,191"3.

I Inverrxteuga I by f V l I Attorneys lTo all 'whom itumayconcern':

UNITED. s TATEs .PATENT oFFIcE.

' WILLIAM PINKNEYMCNEEL, or sAN. ANTONIO, TEXAS.

-Y:ELEG'raro-Lam Ar'rAcnMEN'r.,

Be itlmown' that I, VVILUIAM a citizengof the United States, residing at San Antonio, yin-,the-countyof Bexar and State of Texas, 'havel inyented a new and useful Electric-Lamp Attachment, of which the following isa specilication.

Thepresentfinvention relates to improvementsfielectric lamp attachments, the primary object `ofthis invention being the prof* f visionoiaflamp socketyattachment or-supl the line with the porting means in combination with av switch',

whereby;.the current energizing the filament of anincandescent lam is s o controlled as to produce diii'erent edfrees` ofincandescence in l'-the filament and thus produce different degrees of radiance to produce a dim g or a high light as ma be' desired.

A Vfurther object o the .present invention is the provision of a lamp socket attachment having a receptacle therein in which is mountedv an Aindividual resistance, a switch 'having vthree terminal wires being disposed in operable-relationto said resistance and the contact plates of the socket, whereby the resistance`- maybe laced intoor out out of ament of the lamp, and thus produce a ,varying radiancy orincandescence'to the lfilament. l

With the lforegoingfandother objects in view which willfappear as the. description proceeds, the inventlonresides -in 4the com# bination and arrangement ofparts and in the details of ,construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosedcan be made within the scope of what is claimed without departing from the spirit of the invention. A

In the drawings-Figure '1 is a view -showing the lamp socket attachment broken away toV show the interior construction thereof, with the switch carrying member in elevation, the lamp socket and lamp bclng connected'. Fig. 2 is a section takenon line 2- 2 of Fig. 1. Fig. 3 is a section taken on line 3 3 of Fig. 1. Fig. 4 is a detail view of the switch member with the cover rei moved therefrom. Fig. 1s a diagramma-tic view of the electrical c1rcu1t used 1n connection with the socket attachment and.

designates .the body ot insulation, preferably made of porcelain, the main portion of Specification of Letters Patent.

l.fMcNnm., 1

is provided with the upper 'reduced cylindrii Paten-ted oct. 14;;913.- I y VApplicationnimiaprn23,1912. serialmeaassr.

cal end'2 for removable lconnection' with a' socket S'. The main body portion of the member 1 is covered byffajmetal -casing 3V which carries the reduced lamp "receiving",

sleeve 4 in which is mounted the sleeve 'of' insulating material. 'Disposed within' the sleeve 5 of'nsulating material is the lamp socket recelving sleeve 6, which forms one of the terminals, as is the'usualpractice,

while disposed concentrically through the.

body l and reduced end 2, is ai retaining rod g orl screw 7 which formsthe'otherwterminal for the lamp L, the lower end of'the rod Z being insulated from the lamp socket 6 byff means of the disk 8 off insulation. The.,

threaded terminal sleeve 10 is 'disposed upon the -reduced cylindrical 'portion 2 and is provided with the terminal post 10', which projects within and at the `upper end of ,the

recess 11 formed in the body 1.

A contact pin 12 is connected to thesl'eeve' 6 and 'projects upwardly, so that the upper end thereof is within the lower end of the .i

recess or receptacle 11 and engages the co'ntact .plate 13 provided, with the' clips 14,.

These clips provide a means for the remov#y able reception of the lower end of thelresistance strip lwhich is embedded inthe' spool 16 of insulation to provide a 'rea-dy.

means for carrying the resistance strip 15 and to also insulatethesame from the metal cover 3 should the same contact it when the cover is in sealing posit-ion. The upper end 17 of the resistance coil ismconnected tov a screw 18, from which is led a conductor 19 to the switch carrying member 20. This switch carrying member 2O is disposed at any point within a room to permit of the easy actuation thereof for controlling the lamp L. A conductor 19 isled through the channel 21 of the switch member 20.

The switch mem-her 20 hasconnected therein by means of the screw 22, a plate 24 to which is pivote-d the switch 25, the switch 25 being provided with an insulated handle 25 which is projected exteriorly of the switch body '20 so as to be readily operated to move the free arm 27 of said switch 25 to the dotted and full line position as shown in Fig. 4. The conductor 19 is connected to the contact terminal 28 carried by the body 20 and secured in. position by means of the screw 29, while a 4conductor 30 is led to thecontact plate 24 and is connected thereto by means ofthe 4screw 22,

thus establishing a circuit through the contacts 24 and 28v to include the, resistance strip with the lamp L, as clearly shown generator G.

To more clearly show the use of the pres,-

ent invention, reference` should be had to the electrical diagram as shown in Fig. 5,

in which is shown the switch 25 open, and consequently the lamp L denergized. Should it be desired to produce a dim light or low incandescence of, the lamp L, the

switch 25 is operated to bridge'the Contact plates 24: and 28 and thus close a circuit from the generator G, to the conductor 30, Contact plate 2&1, the l'switch 27, the contact plate 28, the conductor 19, resistance 15, the conductor 33, the lamp Land the generator.

By this means it will be4 seen that the re` sistance 15, is carried bodily by the lamp attaching-body 1 to be cut into the line and thereby reduce theamount of current efecting the filament of the lamp L and thus produce the dim effect desired. Should, however, it bel desired to 4throw`the lamp in'to the line, the switch 25 is moved' to the full line position Fig. 4, so as to bridge the contact plates 24 and 31 and thus cut out the resistance 15, completing a circuit from the generator Gr, conductor 30, the contact plate 2 4, the switch 25, contact plate 31, conductor 30, and the lamp L. Thus the full 'current from 'the generator is thrown into the lamp L and the filament thereof is energized to its full incandescence.

From the foregoing description, taken in connection with the 'drawings it is evident that the attachment 1 carries bodily its own resistance and thus provides a means whereby any form of lamp of the incandescent type may be attached thereto and have its filament aliected to produce the high or low light without any change in the construction of the filament or the socket.

While herein is described the invention in detail, and4 is illustrated a combination embodyingV various features, which may at times be used to advantage, it is not the desire or intention of claimant to be limited to the particular arrangement shown, or t0 an arrangement'embodying the various aux iliary features, except as particularly pointed cutin the appended claim.

lVhat is claimedv is: 4

A lamp socket rheostat including .a body of insulation provided with a recess in one wall thereof, a reduced exteriorly threaded lamp socket engaging boss carried upon the upper end thereof, a. metal cap inclosing the same, a concentrilcally disposed rod extending through the body from end to end, the

upper end being insulated from the metal cap, a metal casino' inclosing'the body andl sealing the recess, the lower end of the same icing constricted and threaded to receive the threaded end of a lamp, a metal socket fitted concentrioally WithinV the constricted end of the met-al casing and insulated therefrom and also from the concentric rod, a re sistance coil disposed within the recess, one terminal of the coil being electrically connected to the metal socket of the lconstricted pci-tion of the casing, and three conductors one interposed between the met l socket engaging cap and the resistance, the second.

between the resistance andthe metal lamp engaging socket andthe third directly con- ,necting the cap and socket..

In testimony that I'claim the foregoing as In own, I have hereto affixed my signature in the presence of two witnesses.

W'ILLAM PINKNEY MGNEEL.

lVitnesses H. H. HOLLY, M. H. NlooLalnns.

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