US1082484A - Lamp-socket. - Google Patents

Description

W. P. ANKLAM.

LAMP SOCKET.

APPLIOATION FILED MAY 26, 1913.

sTATEs Param-*formen WILLIAM F. ANR-LAM, O DETROIT, MICHIGAN, SSIGNOR TO C. M. HALL LAMP COMP-ANY, '0F DETROIT, MICHIGAN, A CORPORATION 0F MICHIGAN.

LAMP-SOCKET.

-Specification o'f Letters Patent.

Patent-ed Dee. so, 191s.

-Application led May 26, 1913. Serial No. 769,927.

To all 'whom t 'may concern:

Be it known that I, WILLIAM F. ANKLAM, a citizencf the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Lamp-Sockets, of which the following is a specicajaiom'reference being had therein to 'the accompanying. drawings.

lll/Ly invention relates to lamp sockets and resides 4in the -novel construction of the 'socket whereby the illuminant may be easily and accurately focused in relation to the reflector; in a' construction in which twisting' of -the wires r leads that are operatively y connected ,to the plug will be eliminated; in

adjusted means for retaining the socket'parts in their osition; and in certain arrangements'- and constructions of parts as will more fully hereinafter appear? In the drawings,-Figure 1 is a fragmentary section through a lamp having my improved socket applied thereto; and Fig.

2 is an enlarged, central, longitudinal section through the plug.4

A designates the outer casing of the lamp.

. .and B the relector'therein, herein shown as f with the reflector.

parabolic form. C is the lamp globe or illuminant, arranged within the reflector.

It is very desirable-in order to obtain the best etliciency of the illuminant--th-t the latter is in proper focus in relation to the reflector, and as the -filaments in lamp globes of the same size vary as to their focal point, it is necessary to have the socket for t-he lamp globe or other illuminant'so constructed that it may be moved into proper'tocus In the present construction this `is accomplished by providing a relative, rotary movement between the socket parts. In the structure shown in the drawings the lamp bulb C is carried lby a plug D which has a screw-threaded engagement with a mounting or bearing portion of the socket, suitably attached to a support. Preferably this mount-ing comprises a sleeve E attached to and carried by the reliector and having an opening-therein alining with an opening in the base of the reliector. Thus the plug may be adjusted to vary the position ofthe lluminantby merely turning the plug, and the turning of the latter may be accomplished by revolving the globe tion without damage to the electrical leads F G, I have devised a novel construction of socket which will allow of the turning of the plug within the sleeve any number of revolutions. Thus, 'H is an insulating core or body-which is provided with bores I J extending longitudinally thereof. Arranged sleeve K by means of an insulating ring O.-

The sleeve N is attached to the other terminal P in a manner similar to that described in connection with the sleeve K, and this sleeve N is also insulated from the socket portion which receives the lamp globe, by a ring R of insulating material.

The member Q has in inwardly-extend-v ing liange S upon which is seated the head T of the core H. In assembling the parts the core is inserted through the member Q, until the head T thereof engages its seat S, and when the sleeves N .K are secured in place by the pins M the several parts are rigidly connected together against longitudinal displacement. In order to prevent relative rotation between the portion Qpand the core H the lat-ter is preferably secured to the former by means of a pin U.

The sleeve E within which the plug is arranged, is provided with sockets V IV slightly spaced and internally threaded to receive the threaded ends X of insulating members Y which carry the terminals Z that are electrically connected to the wires F G that lead to the source of electrical current, The members Z are spring-pressed and when the parts are as shown in Fig. 1 the outer ends of the members Z are yieldably pressed in engagement respectively with the sleeves K N, thereby establishing electrical connection between one of the members Z and the terminal P through the In order to permit of this turning acmedium of the'pin M and the sleeve N, and between the other members Z and the terminal L through the medium of the pin M and sleeve K.. The sl'eeves K N are of sut' ficient width to permit of the necessary -longitudinal adjustment of the plug during the adjustment of the members E in effect forming brushes that during all positions of adjustment remain i contact with their respective sleeves. Furthermore, when the plug has been moved to an adjusted position, the action of the springs upon the members Z will exert a sufficient pressure upon the plug to avoid accidental rotation of the latter, due to jarring or the like.

' Vhile I have shown and described a desirable form of my invention it is readily apparent that the=same is susceptible of various modifications, and I do not desire to limit my protection to the structure shown, but consider the invention sufiiciently broad to embody various modifications thereof.

lVliat I claim as my invention is l. In a lamp socket, the combination of a plug comprising a lamp-receiv'iing socket portion, terminals arranged in said socket portion, an insulating core carrying said terminals, spaced metallic bands upon said core', insulating material interposed between the adjacent ends of said bands, means for electrically connecting each of said bands with` one of the'terminals, a sleeve within which said plug is arranged for longitudinal and rotary adjustment, contact sockets on said sleeve, and spring-pressed contacts in said sockets respectively engaging said metallic bands.

i 2. The combination of a reflector cfa lamp, a plug having a lamp-receiving socket portion formed as a unit therewith, a terminal carried by the plug extending into the socket portion, a bearing for the plug arranged to position the lamp-receiving socket in operative relation to the reflector, a screw threaded engagement between the bearing and the plug for permitting the adjustmentv of the socket portion relative to the reflector, and means Jfor holding the plug and bearing in any position of relative adjustment.

3. The combination of a ref-lector of a lamp, a plug having a lamp-receiving. socket portion formed as a unit therewith, a terminal carried bythe plug arranged to position the lamp-receiving socket in operative relation to the reflector, a screw-threaded 'engagement between the bearing and the plug for permittingthe adjustment of the socket portion relative to the refiector, and yielding means for releasably holding the. plug and bearing against relative movement.

4. Thefcombination of a reflector of a lamp, a plug member having a lamp-receiving socket portion,la terminal carried by the plug and projecting into'the socket portion,

a bearing for the plug arranged to position 5. The combination of a reflector of a lamp, a plug member having a lamp-receiving socket portion, a terminal carried by the. plug and projecting into the socket portion, a tearing for the plug arranged to p0 sition the lamp-bulb engaging portion in operative relation to thc ref iector, an engagement between the bearing and plug for effecting upon a relative rotation of the plug and bearing` a longitudinaltadjustment of tlie'plug relative -to the reflector, a contact carried by one ot said members yieldably' pressed into engagement with the other member and acting to yieldably retain the plug and bearing members against relative adjustment,` and-means for electrically connecting said terminal and'contact.

6. rlrhe combination of a reflector of a lamp, a plug member having a lamp-receiving socket portion, a terminal carriedl by the plug and arranged in operative relation to the socket portion, a bearing member for the plug arranged to position the lampbulb engaging portion in operative relation to the reflector, a connection between the plug and the bearing for effecting upon a ,relative rotation a longitudinal movement of the plug relative to the refiector, a conducting surface on one of said members electrically connected to 'said terminal, and a contact on the other of said membersin electrical engagement with said conducting surface in various positions of relative adjustment of said members, the engagement between the contact and conducting sur- .tacesserving to retain the plug and bearing in their positions of adjustment.

7. The combination of a refiector of a lamp, a plug member having a lamp-receiv ing socket portion, a terminal carried by the plug and arranged in operative rel'ation to the socket portion, a bearing member, for theplug arranged to position the lampbulb engaging portion'in operative relation to the refiector, a connection'between the plug and the bearing for effecting upon a relative rotation a longitudinal movement of the plug relative to the reflector, a con'- ducting surface on one' of said members electrically connected to said terminal, and Aa spring-pressed contact on the other of said members yieldably engaging said conduct- Locaties adjustment of said members 'and acting to yieldably retain the plug and bearing in their various positions of adjustment.

8. The combination off a. reflector 'of' a lamp, a pluginember havinga lamp-receiving socket portion, a terminal carried by the plug and arranged in operative relation to the socket portion, a 'bearing member for the plug arranged to position the lainpbulb engaging portion in operative relation to the. reflector, a connection between the plug and the bearing for effecting upon a relative rotation a longitudinal movement of the plug relative to the refiector, an endless conducting surface on one of said members, an electrical. connection between said surface and the terminal, and a springpressed contact carried by the other of said members and engaging said endless conducting surface.

9. The combination of a reflector of a lamp, a plug having a lamp-receiving socket portion, a terminal carried by the plug and projecting into the socket, a bearing for the plug arranged to position the lamp-bulb engaging portion in operative relation to.the reflector, an engagement between the plug and the bearing for effecting upon a relative rotation a longitudinal adjustment. of the plug relative to the refiector, an endless metallic surfacev on the plug electrically connected. to the terminal, and a spring-pressed i contact carried by the bearing and yieldably engaging said endless surface in various positions of adjustment of the plug and bearing.

10. The coml'iinatioii of a Ireflector of a lamp, a plug having a lamp-receiving socket portion, a terminal carried by the plug and projecting into the socket, a bearing for the plug, comprising a stationary sleeve arranged to position the lamp-bulb engaging portion in operative relation to the refiector, a connection between the plug and sleeve for effecting upon a relative rota`v tion a longitudinal adjustment of the plug relative to the refiector, an endless-metallic surface on the plug electrically connected to said terminal, and a spring-pressed Contact carried by the. sleeve and fixed in relation thereto. said contact yieldably engaging the endless metallic surface of the plug in various positions of adjustment of the plug and sleeve and acting to releasably retain the socket and sleeve against relative rotation.

11. The combination of' reflector of a lamp, a plug having a lamp-receiving socket portion, a terminal carried by tlie plug and pi'ciecting into the socket, a bearing for tlif LJlug, comprising a stationary sleeve arranged to position the lamp-bulb engaging portion in operative relation to the reflector, a connection between the plug and sleeve for effecting upon a relative rotation a lon- .infr

gitudinal adjustment of the plug relative to the reflector, an endless metallic band encircling the plug and electrically connected to said terminal, and a spring-pressed con` tact carried by the sleeve .projecting laterally therethrough into engagement with the metallic band whereby an electrical connection is established between said terminal 'and said cont-act in various positions of adjustment of the plug and sleeve.

12. The combination of a reflector of a lamp, a plug having a lamp-receiving socket portion, a pair of terminals carried by the plug and projecting into the socket .portion, a pair of endless metallic surfaces on the plug insulated the one from the other, means for electrically connecting said surfaces respectively with said terminals, a sleeve within which said plug is positioned, said sleeve being arranged to positionthe lamp-bulb engaging portion inoperative relation to the reflector, an engagement between the plug and sleeve for effecting upon a relative rotation a longitudinal adjustment of the plug relative to the refiector, and a pair of terminals carried by said sleeve and respectively engaging said endless metallic surfaces;

. 13. The combination of a reflector of a` tion relative to the reflector, a contact cari'ied by and fixed in relation to the,bear

g, and means for maintaining an electrical connection between the terminal and contact in various positions of adjustment of the plug` and bearing.

14. The combination of a reflector of a lamp, a plug having a lamp-receiving socket portion, a terminal carried by the plug and positioned in operative relation to the socket portion, a bearing for the plug non-rotatably mounted and arranged to position the lamp-bulb engaging portion in operative re lation to the refiector, a connection between the plug and bearing for effecting a longitudinal adjustment of the plug relative to the bearing, a contactfixed in relation to the bearing, and means carried by the plug for electrically connecting said contact and said terminal.

15. The combination. of a 'reiector of a lamp, a plug having a lamp-receiving socket portion, a terminal carried by the plug and projecting into the socket portion, a sleeve carried by and fixed in relation to the reiiector and Within which saidv plug is arranged, a connection between said sleeve vand plug for eectingvupon a rotation of 'WILLIAM F. ANKLAM.

Witnesses:

WM. J .f BEL'KNAP, JAMEs P. BARRY.

the plug a longitudinal adjustment of .the socket portion relative to the reflector, a Contact carried by the sleeve and means-for maintaining an -electrical connection between said terminal and said Contact in the various positions of adjustment of said plug.

Copies of this patient may be obtained for ve cents each, by addressing the Commissioner of latents,

Washington, D. C.

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