US1248654A - Lamp. - Google Patents

Description

E. A. HAWTHORNE..

LAMP.

APPLICATION FILED FEB. I8, |915.

Patented Dec. 4, 1917.

einen ELLSWOB'TH A. HAWTHORNE, OF BRIDGEPORT, CONNECTICUT.

LAMP.

imacat I Toall 4t 'may concern.'

' Beit known that ll, ELLswoirrH A. HAW- THORNE, a citizen of the United States, residing at Bridgeport, in the county of Fairlield and State of Connecticut, have invented an llmprovement in Lamps, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to lamps and amongother objects aims to provide a strong and simple lampl construction the parts o which may be readily assembled and adjusted.

The character of the invention may be best understood by reference to the following description of an illustrative embodiment thereof shown in the accompanying drawing, wherein Figure 1 is a vertical section through an illustrative lamp shown herein as embodying the invention. j

Fig. 2 is a transverse section taken on line 2 2 ofrig. 1. i

Fig. 3 is a horizontal section taken on line 3--3 of Fig. 1.

Fig. 4 is a transverse section taken on .line 4-4 of Fig. 1, and

Y Fig. 5 is a transverse section taken on line 5-5 ofFig. 1.

Referring to the drawing, the illustrative lamp shown therein as embodying the invention comprises a reflector casing 1, having a ange formed to present a shoulder 3 and a bead 5. A lass 7 is seated on said shoulder and is hel in place by a ring 9 adapted' to be snapped onto said bead.

`At the rear ofthe reflector casing 1 is an aperture through which projects a neck 11 bracket comprising a band 15 embracing said neck and having its edges confined between. said casing and a flange 17 projecting outwardjfroin said neck. rllheband 1s continued to present opposed legs .19 having registering apertures 21 for receiving a bolt whereby the'lamp may be mounted wherever desired. To 'secure the band to said neck a rivet 23 is entered through therleg's thereof adjacent said neck.

Specication of Letters Patent.

Patented Deco 4, 1217.

Application iled February 18, 1915. Serial No. 8,996.

V The neck described serves not only as an.

element for securing the reflector casing 1 to the backet but also to accommodate aV lamp. To this end the casingis provided with a sleevelike member or socket'25 having a sliding frictional fit in said neck and preferably is substantially longer vthan said neck. vIn one end of the member 25 is fixed an inner bayonetsocket 27, in which is inserted the base or plug 26 of a-usual electric lamp bulb 29 provided with a pair of contact plates 28 separated by a usual liller 30;

'llhe plug which is of the .wellknown Ediswan type is locked to said slee've by diametrically opposed pins'31 enteredinto Il..-

shaped slots 33. The opposite'end of the sleeve socket is adapted to receive the connector plug 35 also of the wellknown Ediswan type, carrying wires 37 and usual ing the slots 43,there"i. r1`his ferrule 45,' as seen-in Fig, 1, will coperate with the' flange 17 and act as astop to preventitoo great inward adjustment of the lsleeve 25.l

1t will now be apparent that the springpressed terminals 39 tend to press the connector plug 35 and the bulb plug or base 26 axially in opposite directions, and thus lock said plugs in their respective'bayonet sockets. By simply turning the connector plug 35 through the angular distance permitted by the travel of the pins 41 in the circumferential/'portions of the lV-shaped slots 43, the spring-pressed terminals 39 may be moved into and out of engagement with the contacts l28 of the 'lampbulb 29,v the connector plug thus `constituting a ccrrvenient switch directlyy engaging the-lamp `base and serving to complete and interruptthe lamp circui y When iti-'is desired to focus the lamp c,the wire plug may be grasped by the hand Vto slide the'sleeve socket axially relatively to the neck. It may-be secured in its different ment with the sleeve socket. Duringl this adjustment both the bulb plug and wire carrying plug are locked to the sleeve socket so that their relations may be maintained throughout the adjustment. The socket is slid straight axially without the necessity of any rotative adjustment thereof such as would be likely to disturb the locking connection of the wire plug with the socket or break the connection of the terminals 39 with the bulb plug contacts. Consequently the lamp is maintained lighted throughout the adjustment and a veryl ready and perfect focusing of the lamp may be attained. Furthermore, by the elimination of rotation of lthe plug there is no necessity for twisting or untwisting the wires or disturbing their a v proper relation.

By the lamp described there is provided extremely cheap, strong and simple con- ",asti'uction, the elements of which may be quickly and readily assembled and adjusted as des1red.

Having described one embodiment of the invention without limiting the same thereto, what I cla-im as new and desire to secure by Letters Patent, is:

1. A lamp comprisin a reflector casin having an aperture int e rear end thereo a glass for said casing, a neck in said aperture having a flange, and a collar engaging said casing, a bracket band embracing said neck, and confined between said'casing and said flange, a sleeve socket axially adjustable in. said neck, a set screw for locking said socket in different positions of adjustment, a lamp having a plug in one end of said socket, a wire plug in the opposite end of said socket and means for locking said plugs insaid sockets.

2\.A lamp comprising a reflector casing having an aperture therein, a glass for said casing, a neck having a rigid flange immovable axially thereof, and a collar for engagement with the inner face of said casing, a bracket band embracing said neck between said casing and said flange and means carried by said band to secure said casing and band against relative turning movement.

3. A lamp comprising a reflector casing having an aperture therein, a neck projecting outward from said aperture, a bracket band embracing the exterior surface of said neck, a socket having a sliding t in the inner surface of said neck, a bulb plug in one endof said socket, a wire plug in the opposite end of said socket and means for lhckjng said plugsin said socket.

4. The combination of'a casing provided with axially-alined bayonet sockets open at their opposite ends for the admission of a pair of electrical conducting devices, each having inter-locking bayonet connection with its respective bayonet socket, and a resilient contact member carried by one of said conducting devices whereby said devices are locked in position in said sockets and an electrical connection is established between them.

5. In an electric lamp, the combination of a casing having a reflector, said casing being provided with a tubular socket adapted to form a support for an electrical connector and a second tubular socket in` alinemei-t with the first socket and adapted to form a support for a lamp projecting within .said reflector, a connector projecting outwardly from the first-mentioned socket and provided with resilient .contact means on its inner end, and a lamp seated within said inner socket and provided with a Contact lnenabrr on its outer base portion adapted to engage said resilient contact means.

6. In an electric lamp, the combination of a bowl-shaped casing having an inner bowlshaped reflector, said casing being provided with two tubular socket portions coaxially arranged, an electric plug connector detachably supported in the outer socket portion, a lamp bulb provided with a base detaehabl v supported within said reflector extending through the inner socket portion and directly engaging said connector.

7. In an electric lamp, the combination of a bowl-shaped casin having an inner bowlshaped reflector, said casing being provided at its base with a tubular extension projecting from and coaxial with said reflector and an outwardly projecting tubular rear extension coaxial with said first extension, an electrical connector plug detachably supported in said outer extension, a connection extending through said plug and provided at its inner end with a resilient contact, a lamp bulb within said reflectorand provided with a base extending through said inner tubular extension, and a contact plate on said base adapted directly to engage said resilient contact member.

8. In an electric lamp, the combination of a bowl-shaped casing having an inner reflector, said casing being provided with inner and outer tubular sockets substantially coaxial one with the other, said outer socket lbeing provided with T-shaped slots each open at its outer end, a cylindrical plug provided with diametrically opposed pins projecting therefrom and adapted to enter said T-shaped slots, respectively, a resilient eccentrically disposed contact member on the inner end of said plug and provided with an electrical connection extending through said plug, an electric bulb contained within said reflector and provided with a base supported within said inner socket, and a contact eccentrically mounted on the rear end of said base adapted to engage said resilient contact member, the ends of the lateral arms of said T-shaped slot being suitably spaced around the circum- Lacasse socket, and a resilient connection interposed between the adjacent ends of said Edi- Aeo swan bases whereby the lamp and connector are locked in position.

10. In an electric lamp, the combination of a casing having an inner reflector, said casing being provided with inner and outer bayonet sockets coaxially disposed, a lamp bulb within said reiector and provided with an Ediswan base adapted to be supported Within said inner socket, an outer connector provided with an Ediswan base extending and supported Within said outer socket, a. resilient contact plunger, and an electric conductor extending from said plunger outwardly through said connector.

11. The combination with a casing, of receiving means carried thereby for supporting a pair of unitary electrical conducting devices in axially alined relation, each of said devices having interlocking bayonetjoint connection with said means, one of said conducting devices comprising a resilient contact member adapted to engage the other for establishing an electric connection between them and coperating With said bayonet joints to lock said devices in said means.

12. In an electric lamp a casing, a tubular element associated therewith, a bulb having a base received in one end of said element, a connection plug having conducting wires secured thereto received in the other end, said plug comprising a resilient contact member vfor contact with said base and being adapted for rotation in said member to make or break the connection.

13. In an electric lamp a casing, a tubular element associated therewitlna bulb having a base received in one end of saidelement, a `connection plug for insertion in the other end of said member having conducting Wires secured thereto and also comprisin' a resilient contact member to engage' said base, said plug and member having a coperating bayonet slot and pin for locking them together.

'14. In a lamp a casing havin inner and outer baynonet sockets, a lamp bu b having a base received in said inner socket and having a pin to interlock with said socket, a plug received in said outer socket having a pin to interlock therewith and also havlng a resilient contact member secured thereto arranged to bear on said base and exert a spacing thrust on plug and base when they are seated in their respective sockets.

15. In a lamp a casinrr having inner" and outer sockets, a lamp 'bulb having a base received in said inner socket, a connection member rotatably received in said` `outer socket and having provision for interlockf ing therewith when rotated, said member comprising a resilient Contact device adapted when the member is positioned directly to contact with said'base and exert a spacing thrust on base and member firmly to seat the same. I-

16. A lighting apparatus comprising, in combination, an electric lamp bulb having a base provided with a terminal, a conductmg cable. resilient contact means normally electrically connecting said cable With said terminal to establish the lamp circuit, a rotatable and axially movable plug to which said cable and said contact means arel Yse-L cured and b v which said contact means ma be moved into and out of contact with said terminal. means forming a socket in Which said lamp base is normally held by said resilient contact means, means forming a socket in which said plug is normally held by said resilient contact means, the lastmentioued socket-forming means Ahaving provision to enforce turning movement of said plugl to engage and disengage said contact means with said lamp terminal and means forming a housing for said lamp and a. mounting for said parts. v

17. A lighting apparatus comprising, in combination, an electric lamp bulb having a base provided with a terminal, a conducting cable. resilient contact means normally electrically connecting said cable With said terminal to vestablish the lamp circuit, a rotatable and axially movable plug to which said cable and said contact means are secured and by which said contact-means may be moved into and out of contact With said terminal, means forming a socket inwhich said lamp base is normally held byY said rresilient contact means, means forming a socket in which said plug is normally held mounted in said neck; a bulb said member, said member having bayonet slots in its rear end, @connecting plug enname to this specification, in the presence terng 'staid membelr and eigaing sad lot of two subscribing witnesses. am a erru e inc osino t e s otte en o the member and adzptsed to abut the neck ELLSWORTH A' HAWTHORNE' to limit inward mc vement of the socket Witnesses: A member therein. E. HORACE HAWTHORNE,

n testimony whereof, I have signed my ANNA A. KAIEROSKY.

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