USRE20937E - Miniature electric lamp bulb seat - Google Patents

Description

P. KOLLSMAN Re.20,937

MINIA'I URE ELECTRIC LAMP BULB SEAT AND SOCKET COMBINATION Dec 6, 1938.

iNvEN'rR FFIUL KULLSNHN ATTORNEY Original Fil ed May 1, 1957 nam d Dec. s, 1938 UNITED STATES IHINIATURE ELECTRIC LAMP BULB SEAT AND SOCKET COMBINATION Paul Kollsman,

Original No. 2,088,559, dated May 1, 1937. issue October 10, 1938,

18 Claims.

the removal and replacement of such a miniature shown in the accompanying drawing to which the claims are directed solely for purposes of 11- vi lustration.

New York, Y.

July 27, 1937, Serial Application for re- Serial N 0. 234,270

In the drawing Fig.v 1 shows my plug base and socket. construction molded as an excrescence from the case of aninstrument to be illuminated, the parts being shown for the most part in vertical. section; v

Fig. 2 is a similar view of my plug and socket combination slightly modified and applied to an adaptor designed to combine with an instrument casing by clamping over its fall; and Fig. 3 is a similar View of my plug and socket combination of another slightly modified form associated with the glass front portion of the case of an instrument to be illuminated.

In each of the embodiments A, A, A", light structure or lamp base assembly ing a base mounting of a miniature incandescent electric light bulb B. C, C, C", are respective cooperative sockets for mounting the bulb bases A, A and A".

In Fig. 1 the socket Ois molded as an extension or excrescence I extending out from the casing 2 of an instrument to be illuminated at its dial back of the glass window 3. Into this excrescence I is formed a, female threaded socket an electrical contact member 4 which is electrically connected with a current supply lead 5. An arcuate ledge 6 is also molded into the excrescence I to seat an is shown in the form of a circularly bent wire lying on ledge 6 from which its leg 8 extends down into connection with a second current lead 9. The leads 5 and 9 may be imbedded and held by cement III in a channel formed in the exterior wall of casing 2.

An open ended cylindrical channel II is provided by the socket G into and through which the bulb B projects, when in instrument illuminating position as shown by the dotted lines. This cylindrical channel is co-axial with the t eads but needs merely be of suitable size and sha to pass the cylindrical plug and bulb A-B. In this 4 construction light from the filament I3 eifects illumination edgewise through the window 3 as fully described in one of my aforementioned copending applications.

In this combination structure of Fig. 1 the bulb B is surrounded by a cylindrical miniature sleeve or metallic holder member l4 having an outstanding ledge l5. To this sleeve is connected one of the bulb leads or terminal leads l6.

A cylindrical insulating ring or nipple I'I assists ininsulating and seating a. cylindrical pluglike metallic nipple or plugbase member I8 concentricallyabout the structure To the closing cap portion or finger operable grip portion I9 of this nipple is secured the other bulb lead or terminal In all the figures of the drawing and a closed finger operable gripper portion;

lead 00. In all embodiments the nipple structure particularly the cap portion I0 is closed and serves as a shield against the outward emission of light. An insulating cementitious filling 2| completes the assemblage and causes the entire plug shaped base to constitute a unit except for the'packing washer 22 which may be held in place frictionally and serve to complete a hermetical seal when the plug A is inserted in socket C.

In the construction of Fig. 2 the socket 0' comprises a cylindrical internally female threaded metallic nipple internally of which is mounted a second electrical contact sleeve I0 which is insulated from the other parts by insulating rings II and 12. The terminal leads [3 and 14 are connected to the metal nipple l0 and to the sleeve and may extend back 'from an adaptor in the form of a cable 16. .This adaptor I5 is shown seated upon an instrument casing 11.

In the plug structure of Fig. 2 the contact sleeve I4 alone is employed, the ledge I5 being omitted but is substituted by a sealing or packing washer I50. 7 In other respects the structure corresponds to that of Fig. 1.

In Fig. 3 instead of seating 400 by means of a cement II in a molded pocket 42 of an adaptor, it is shown cemented directly by means of a cylindrical reduced sleeve 0| in a suitable perforation in the glass window part of an instrument 402. In this construction the contact sleeve I00 is shown provided with resilient struck out fingers "I. The sleeve I00 is similarly insulated from the metal socket part 400 in accordance with the showing of Fig. 2. This construction is that illustrated and described in my co-pending application, Serial No. 719,115. In this the extreme tip of bulb B has an opaque shield b, formed in any suitable way as by paintingthe tip of the bulb.

the metal nipple the mounting panel I00 is shown mounting the instruments in its rear as is customary, slagwing through suitable cut-outs IOI, I01, and I Although I have shown 3 modifications of my plug base and socket, including three applications of the same two instruments to .be illuminated, I desire it to be understood that other modifications within the scope of the accompanying claims should be obvious to those skilled in 1 the art and are contemplated as being within the scope of my invention.

What I claim and desire to secure by United States Letters Patent is:

1. In combination, a plug base member having a hollow nipple portion providing a bulb seat and a closed finger operable gripper portion; said nipple portion having external combined socketing and electrical contacting male threaded metallic means; aminiature electric lamp bulb of smaller size than said bulb seat and having terminal leads; a second metallic contact of arcuate form embracing said bulb beyond said nipple portion; connections for said leads to said threaded metallic means and said second contact; and insulating means securing the terminal portion of said bulb in said seat with the light emitting portion exposed coaxially therewith and securing said second contact coaxially with said nipple portion and about said bulb.

2. The construction as in claim 1 with a light shield for the tip of the bulb.

3. In combination, a plug base member having a hollow nipple portion providing a bulb seat with each instrument the said base nipple portion having external combined socketing and electrical contact male threaded metallic means; a miniature electric lamp bulb of smaller size than said bulb seat and having terminal leads; a second metallic contact of cylindrical form embracing said bulb beyond said nipple portion; connections for said leads to said threaded metallic means and said second contact; insulating means securing the terminal portion of said bulb in said seat with the light emitting portion exposed coaxially therewith and securing said second contact coaxially with said nipple portion and about said bulb; a socket open at both ends having a female threaded metal mount complementary to said nipple portion and constituting a first socket contact; and a second socket contact insulated from said first contact and cooperative with said second contact of said plus.

4. In combination, nating device, a lamp, said lamp comprising a in an instrument illumia base, and a socket, the I closed cylindrical bulb, a filament therein, and conductive leads' to said filament passing through the material of said bulb, the said base comprising a cylindrical con- ,tact member adjacent said cylindrical bulb having electrical connection with and an annular supporting member, and an insulating member holding the several members in substantially concentric relationship; the said socket comprising members adapted to cooperate with the concentric members of said base for the support thereof and electrical connection thereto.

5. In combination, in an instrument illuminating device, a lamp, a base, and a socket, the said lamp comprising a filament therein, and conductive leads to said filament passing through the material of said one of said leads,

bulb, the said base comprising a conductive sleeve member around said cylindrical bulb having electrical contact with one of said leads, a second metallic member of substantially annular form having a connection to the other of said leads, a plastic member holding the several members in substantially concentric relationship; the said socket comprising in combination a conductive member adapted to cooperate with the said second metallic member, an insulating exterior portion for said socket, an electrical supply connection to said conductive member, a second conductive member and electrical connection thereto adapted to cooperate with said sleeve member, and a light channel cooperating with said filament adjacent said socket.

6. In combination, in an instrument illuminating device, a lamp, a base, and a socket, the said lamp comprising a closed cylindrical bulb, a filament therein, and conductive leads tosaid filament passing through the material of said bulb, comprising a conductive sleeve member around said cylindrical bulb having electrical contact with one of said leads, and a metallic holder member having an annular portion and a connection to the other of said leads, an annular insulating ring surrounding said conducting sleeve for the insulating separation thereof from other members of said base, a plastic member holding the several members in substantially concentric relationship, the said socket comprising in combination a cylindrical member adapted to cooperate with the said holder member, a second conductive member adapted to cooperate with said sleeve member.

supply connections thereto, and a closed cylindrical bulb, a 4

cooperating with said filament adjacent said inassembly associated therewith comprising a sulating'support.

7. Incombination, in an instrument illuminatengaging the said socket member and a lamp device a socket member adapted to be atmember attached to the said base and smaller tached to an instrument to be illuminated, and than the socket-gripping portion of the said 5 serted therein, comprising a grouping of cosocket, whereby the said lamp is passable through axial members, including a bulb having a fllasaid socket member oi said assembly and liable ment adjacent one end thereof, a conductive in position.

cylindrical sleeve member therearound, an an- 12. The combination with a lamp socket mem- 10 nular insulating member around said sleeve, a her having a passage therethroug :0! a lamp bulb. said combination being adapted to enter the said socketmember; alamp member mounted 15 said socket and to carry said lamp through said on the said base, smaller than the socket-gripsocket to a position adjacent an object to be ping portion of the said base and smaller than illuminated. the passage through said socket, rendering the a holder member around said sleeve, and atstructure is entered in and engaged with said as tachedthereto by cement and connected to the socket member.

support and adapted to cooperate with said sleeve finger grip portion, a portion of lesser dimensions member surrounding said bulb, electrical conengageable in the said tubular passageway, the

40 base member having a hollow nipple portion attached to said supporting member having an 40 with ember providing a seat and a passage extending ble structure suitable for socket cooperatiom a partially into said base member; an electric light lead 01' said bulb: and means securing an end engageable parts extending radially outward portion of said bulb in said seat with the light from said bulb but leaving a light emitting poremitting portion 01' said bulb exposed substantion 01' said bulb free for bulb-first insertion into tially coaxially therewith. asocket.

11. In combination, alamp socket member hav- 17. In combination, a lamp base member having apassage therethrough; a lamp and base has a hollow portion forming a lamp bulb seat 7 and an attached closed finger grip portion; a miniature electric lamp bulb not exceeding the width of said hollow portion and said hollow portion; bulb;

said lamp -member comprising a tubular socket portion and a chamber portion adjacent an illuminable object, e said tubular socket portion receiving the sa lamp base member, the said miniature electric lamp bulb extending into said chamber positioned in and sa d lamp said chamber said illuminable object. I

18. In combination, a miniature electric lamp bulb; a base tor the support thereof; a socket member for the releasable support of said base; a

. chamber adjacent said socket and aligned therewith, said bulb being passable through said socket and flxable by said base in said chamber; and a finger grip member attached to said base for inserting said bulb through said socket and for inserting said base into gripping relationship in said socket.

I PAULKOLLBMAN.

bulbbeyond said socket and in in illuminating relationship with

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