US2200954A - Electric device - Google Patents

Description

May 14, 19404 .J4 GLASSBERG 2,200,954

ELECTRIC DEVICE Filed Jan. 10, 1939 5 Sheets-Sheet l 77 INVENTOR Jian! /sse/:g

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ATTORNEY May 14, 1940- J. GLASSBERG ELECTRIC DEVI CE Filed Jan. 1o, 1959 5 Sheets-Sheet 2 INVENTOR 71605 /U/wy 2%, P ATTORNEY May 14, 1940. J. GLAssBERG ELECTRIC DEVICE Filed Jan. l0, 1939 5 Sheets-Sheet 5 NVENTOR BYca /anssj 717 ATTORNEY May 14, 1940. J. GLAssBERG 2,200,954

EILECTRIC DEVICE Filed Jan. l0, 1939 5 Sheets-Sheet 4 INVENTOR tja/co5 yaserj BY ATTORNEY May 14, 1940. J. GLAssBERG ELECTRIC DEVICE Filed Jan. l0, 1939 5 Sheets-Sheet 5 INVENTOR Jim ./.w my BY 4 l 'm ATTORNEY Patented May 14, 1940 2,200,954 ELECTRIC DEVICEy Jacob Glassberg, Hillside, N. J., assigner, by

mesne assignments, to Radiant Lamp Corporation, a corporation ci New Jersey Application January 10, 1939, Serial No. 250.154

22 Claims.

The present invention relates to electric devices and more particularly to devices of the character which are operated under high wattage conditions although it may find application even among those devices which are operated under low-wattage conditions. In one of its more specific aspects the invention is directed to multiple post lamps and especially to those incandescent lamps generally known as bi-post.

lamps. s

The bi-post electric incandescent lamp now on the market includes an envelope consisting of a glass bulb whose neck is sealed to a glass cup having a pair oi' hollow tubular projections in the bottom thereof. Sealed to each of said projections is a hollow thimble contact terminal in which is secured a rigid channel supporting lead. Bridging the leads are lavite spacers between which is mounted a coiled tungsten iilament. This lamp is of the type disclosed in the Wright Patent #2,069,638, issued on February 2, 1937. The lamp is generally mounted in a socket having a plurality of spaced sleeves for receiving the contact terminals. Set screws for tightening the thimbles in the sleeves are located in the sides of said sleeves. A lamp of this type is generally secured in said socket by the average workman in the `following manner. First, he inserts the thimble terminals into the contact sleeves of the socket and then :lirmly tightens one set screw against oneof the thimble terminals to rmly anchor the thimble in its socket sleeve to reduce the danger of sparking and to secure the lamp thereto. 'I'hen he tightens the other screw ilrmly against the other thim-ble terminal to firmly anchor this terminal to its socket sleeve. These socket sleeves ordinarily are not of such precise size and so precisely spaced from each other that there is no play between these sleeves and the thimble terminals of the lamps which are to be carried thereby.

Consequently, it happens that during the set screw tightening operations the terminals are bent towards or away from each other and the stress applied thereto is transmitted to the supporting channels and they move with the thimbles. In many cases when the thimbles move and carry with them the channels, not only do the channels move with respect to each other, but the entire mount becomes distorted and the position of the filament is changed. This occurrence has been common in the ileld and the movement of one of said thimbles with respect to the other often causes a. permanent and definite deformation of the supporting channels,

the filament and thimbles. In addition, it sometimes happens that after some use, the cup itself splits land fractures due to the stresses set up therein and resulting from the stresses in the thimble terminals which are imparted to the rigid leads secured thereto and movement of the terminals causes the leads to move due to contraction and expansion in the course of normal usage.

An object of theinvention is to obviate the foregoing and other disadvantages.

Another object oi' the invention is to provide an improved electric device.

Another object of the invention is to provide an improved electric device which may be secured in an ordinary socket therefor by the average workman without the liability of mount distortion in the course of securing the same therein.

Another object of the invention is to provide a multiple post lamp whose supporting leads are unaffected by any movement of the lamp terminals with respect to the envelope.

These and other objects will in part be evident from the hereinafter description and appended drawings, wherein:

Figure 1 is a front view of a complete bi-post lamp embodying my invention.

Figure 2 is a vertical cross sectional view of the lamp shown in Figure 1.

Figure 3 is an enlarged fragmentary view of the lower part of the lamp shown in Figures 1 and 2. l

Figure 4 is a cross sectional view taken on line 4 4 of Figure 3.

Figure 4a is a detail view of the individual parts of the novel device for locking the ends of the conductor in the contact terminals as shown in Figures 1-3.

Figure 5 is a front view of a complete bi-post lamp embodying the invention and is a modification of the lamp shown in Figure 1.

Figure 6 is a vertical cross sectional view of the lamp shown in Figure 5.

Figure is an enlarged fragmentary view of the lower part of the lamp shown in Figures 5 and 6.

Figure 8 is a detail view of the semi-cylindrical elements at the ends of the connecting condoctors and the rigid leads.

Figure 8a is a cross sectional view taken on line 8 8 of Figure '1.

Figure 9 is a vertical cross sectional view oi a novel unitary assembly and is a modiilcation of the novel assembly shown in Figures 3 and '7.

Figure 10 is a vertical cross sectional view of a novel unitary assembly and is a further modification of the assembly shown in Figure 3.

Figure 11 is a perspective view of a novel means for electrically connecting a terminal and a lead support.

Figure 12 is a vertical cross-sectional view of a novel unitary assembly and is a further modification of the assembly shown in Figure 3.

Figure 13 is a longitudinal cross sectional view of a terminal having a tapered upper end terminating in a knife edge and having a glass coating welded to the edge and inside and outside surfaces of the upper end thereof.

rFigure 14 is a longitudinal cross sectional view of a support having an outwardly flared lower portion whose end is tapered and terminates in a knife edge and having a glass coating welded to the edge and inside and outside surfaces of the tapered part thereof.

Figure 15 is a perspective view of the clamp connecting a lead and the conductor connecting the lead and a terminal and shown in Figure 12.

Figure 16 is a cross sectional view taken on line Iii- I8 of Figure 12.

Figure 17 is a cross sectional view taken on line I1-I1 ofFigure 12.

Figure 18 is a view showing a supporting rod having a glass bead or flange welded thereto.

Figure 19 is a cross sectional view of a novel unitary assembly and is a still further modification of the assembly shown in Figure 1.

Figure 20 is a fragmentary view similar to Figure 19 and shows a modified" connection between the terminals and the downwardly extending tubes of the base.

Figure 21 is a cross sectional view of a novel unitary assembly and is`a still further modification of the assembly shown in Figure 1.

In the practice of'my invention there may be employed the well known insulating base III which as shown may be a preformed essentially all glass cup I I having a plurality of spaced openings in the bottom thereof. If desired the base I0 may include a pair of short and hollow glass tubes I2 and I3 disposed parallel to each other and being integral with the bottom of said cup and communicating therewith.

According to the invention contact terminals I 5 and supports I6 for a translation element I1 are so secured to the base Ill that movement of the contact terminals with respect to each other does not impart any appreciable movement to the supports. 'I'he contact terminals may be in the general form of modified thimbles composed of copper or the like. As shown each terminal I5 may consist of a thimble comprising an elongated cylinder I4 having a dome I8 closing one end thereof and an outwardly extending flange I9 at its other end and a relatively short hollow upper cylinder 20 concentric with cylinder I4 and integral with the flange I9. The terminals I5 are essentially rigid. The upper cylinder 20 is tapered to a knife like edge at its upper extremity, as shown in Figs. 1, 2, 6, 7, 9, l0, 12 to 14, 19 and 21 or it may be threaded at its upper end as shown in Figure 20. Each terminal I5 may have an opening in the dome thereof, shown in Figs. 12, 19, 20 and 21, it may be a single element having a completely closed dome, shown in Figs. 1 to 3, and 5 to 7, or it may be a two piece unitary structure whose dome I8 is removably secured to the elongated cylindrical portion thereof by virtue of the threaded connection shown in Figs. 9 and 10.

I'he terminals I5 having knife-like edges are first provided with a lapping glass film as shown in Figure 13 and are then hermetically sealed to the tubes I2 and I3 and are thus rigidly secured thereto. The terminals I5 having threaded upper ends are threadedly secured to the tubes I2 and I2 having threaded lower ends in the manner shown in Figure 20. Either before or after securing the terminals I5 to the tubes I2 and Il, the same is provided with a coating 25 which resists oxidation and which has a relatively high melting point, such as nickel, chromium or the like. The purpose of this coating is to prevent blackening and clouding of the envelope of the device which ordinarily takes place due to the vaporizlng of the compounds of copper and the copper itself and the dropping of these vapors into the envelope, especially when the device is burned base up. It is preferable that the entire inner surface of terminals I5 except that portion coated with glass be so coated.

The supports I5 for the mount of the device are secured to the base, II) and are preferably independent of the terminals. Each support I 5 may bein the form of a short hollow cylinder 2l whose outside diameter is slightly less than the diameter of the openings in the bottom of base I0 and rigidly secured to the lower edge thereof is a tapered flange 21 (Figures 1-3). The cylinder 2l and flange 21 are composed of copper or the like and cylinder 25 at its upper end is inside threaded and the entire outer surface of said cylinder 25 has a thin coating 28 of nickel or chromium thereon.

A short stud bolt 29 having a head 30 bearing against coating 21 completely covers the upper edge of the cylinder 26. The bolt 28 is preferably composed of nickel or chromium. When this structure is employed, the terminals I5 need not be coated with nickel or chromium because even if there is any vaporization ofthe inside surface of the terminals I5 the vapors are prevented from reaching the envelope by the closed ends of the supports I5.

To anchor cylinder 28 to the base I 0, the flange 21 is provided with a glass layer folded over the entire knife edge of the flange and welded thereto in the same manner in which it is applied to the knife edge of terminal I5. 'I'hus there is obtained a firm metal to glass seal. The cylinder 26 is inserted up through the tube I2 or I 3 and the glass on the flange 21 is fused to the glass at the lower end of the tube to make a tight and hermetic seal therebetween. The glass at the end of terminal I5 is fused to the glass on the flange 21 connected to the tube to make a tight and hermetic seal therebetween as shown in Figures 1-3.

The support IB may also be a copper cylinder 32 flaring slightly outwardly at its lower end which is tapered to a knife like edge as shown in Figure 14. Like the previously described support I8, this one also has a glass coating at the tapered part thereof which in this instance is secured to the upper part of the bottom of the base I0 by welding the glass thereof to base I0 to provide a tight and hermetic seal thereat. The entire exposed outer surface of cylinder 32 is provided with a coating 3| of nickel or chromium.

The air-tight cylinder 32 may be a single closed dome thimble as shown in Figures 9 and 10 and in this case the dome I8 of terminal I5 is removable. 'I'he openings are hennetically sealed by supports 32 and the terminal l5 need not be air-tight.

The support I6 may also be a solid cylindrical post or rod 35 composed oi tungsten, or any other metallic composition which makes a tight and hermetic seal between it and a large glass bead or other glass element 36 as shown in Figure 18. I'he tungsten element 35 is preferably of a diameter materially less than the diameter of the openings in said cup and the inside diameter of said tubes II and I2.

The glass element 36 is preferably sealed to said element 35 at a portion thereof intermediate the ends of element 35. The element 35 with the glass element 36 sealed thereto is rigidly secured to the base I0 by fusing the glass 36 to the glass of the base to form a tight and hermetic seal therebetween as shown in Figures 19 and 20. In this case the outer end of terminal I5 may be a detachable dome as shown in Figures 9 and 10 or it may be a single element with an opening in the dome as shown in Figures 19-21 and the terminal I5 may be either hermetically ring sealed or merely threadedly secured to tubes I2 4 and I3.

Instead of securing the support I6 to the base by a metal to glass seal, it is also within the purview of the invention to secure support I6 thereto by a cement seal. In this case there is a conical opening at the upper part of the base and above each tube. The support I6 may be a nickel or chromium tube 38 making a threaded engagement with the interior threaded surface of a hollow conical glass or other ceramic plug 39 located in the conical opening in said base and firmly anchored -thereto by a high temperature resistant and non-volatile adhesive.

Still another type of support I6 is shown in Figure 12. In this modification, the support I6 is an upstanding glass member 40 integral with the bottom of the cup, having a longitudinal opening, at the center thereof, which is in alignment with the opening of a tube and having a ange 4I. The member 40 has a longitudinal groove or slot therein parallel with the longitudinal opening in the center thereof. In this case, the entire structure including the base I0 and supports I6 may be cast or in some other manner produced as a single glass unit.

A mount 5D is secured to the hereinbefore described supports I6 in any convenient manner.

The mount may be manufacturedas a separate unit and generally may comprise a pair of oppositely disposed and rigid channel supporting leads 45 composed of nickel or the like. Insulators 44 are spaced from each other and their ends are located in said channels and secured thereto in any convenient manner. A translation element vwhich may be a filament 46 has its ends electrically connected to said leads. The larnent may consist of a series of coils mounted on supporting wires 41 extending downwardly from the upper insulator and wires 48 extending upwardly from a glass bar 52 located above the lower insulator and anchored thereto by wires 5I. As shown vin Figures 1-3, 9, 10, 19-21 the lower end of each rigid lead may have a clamp 55 secured thereto by welding, riveting or other appropriate means.

The clamps are disposed in the manner shown in said igures with each clamp being a single strap having a rectangular depression for receiving thelead and semi-circular sides terminating in tabs having openings therein to accommodate the shank of a nut and bolt assembly for locking the clamp to its support. Either the inner face of the semi-circular sides of the clamp or the outer face of the upper part of the supports I6 or both may be knurled or roughened so that there shall be a tight and secure irictlonal engagement between the clamp and the support I6 to eliminate the possibilities of slippage therebetween.

Each support I6 except those shown in Figure 12 has an electrical conductor 10 connected thereto and to the terminal I5 located therebelow. The electrical characteristics of each conductor III may besuch ,that in the event of an overload which sometimes happens because of illament breaking with consequent arcing or because of some other reason, then the conductor 16 will melt and break the circuit, thus acting as a fuse as well as a conductor for the current between the terminals and supports.

As shown in Figure 13, the lower end of each conductor 10 is electrically connected and locked to each of the terminals I5 by a locking device 1I comprising a split metallic sleeve 12 having a projection 13 extending therein and a clamp 14 at one end thereof tightly holding one end of the conductor 16. Each terminal I5 has a sleeve 12 located in the cylinder I4 thereof and in each sleeve 12 is located a split sleeve 15.

A spreader or expander 16 is located in one end of sleeve 15 and a take-up bolt 11 makes threaded engagement with spreader 16. When the bolt 11 is screwed into spreader 16, the spreader is drawn towards the bolt and expands the sleeves 'I5 and 12 to force the sleeve 12 ilrmly against terminal I5. Conductor 10 whose diameter is much less than the inside diameter of tubes I2 and I3 extends from the clamp 14 through a tube, through the opening in the bottom of the base into support I6 and its other end passes through an opening in the side of support I6 and is anchored thereto by the clamp 55 and is firmly located between the lead 45 and support I6.

As shown in Figures 5-7, the lower end of each conductor 10 is secured to each terminal I5 in the same manner in which the one end of conductor 10 is secured to terminal I5 of the device shown in Figures 1-3 and the upper end thereof is secured to the support I6 by the same device except that instead of clamping the upper end of conductor 10 to clamp 14, clamp 14 is eliminated and the upper end is clamped to a semicircular plate located between the support I6 and sleeve 12. Each lead 45 also terminates in a plate 8| which also is located between the sleeve 12 and support I6. When the bolt 1.1 is screwed into spreader 16, the sleeve 12 is expanded to rmly press both plates 80 and 8| firmly against support I6.

As shown in Figure 9, both ends of each conductor 10 are firmly connected to terminal I5 and support I6 by means of the expanding spreader locking means shown in Figures 1 3 and heretofore described.

As shown in Figure 10, both ends of each conductor 10 are rrnly connected to terminal I5 and support I6 by means of the expanding spreader locking means shown in the upper part of Figures 5-7 and hereinbefore described.

As shown in Figures 19 and 20., one end of each conductor 10 is firmly secured to the lower end of support I6 by a butt weld or collar and its other end extends through an opening in the dome I8 of terminal I5 and is welded thereto.

As shown in Figure 21, the lower end of conductor 10 is connected to terminal I5 in the same manner in which the lower end of conductor 10 is connected to terminal I6 in the modiication shown in Figure 20 and its upper end is connected to support I8 in the same manner in which the upper end of conductor I is connected to support I in Figures 1-3.

Since the support I6 of Figure 12 is glass, conductor has the upper end thereof connected directly to lead 45 and its lower end is connected to terminal I5 in the same manner in which it is connected to terminal I5 as shown in Figures 19 and 20.

In practice, it is found that bending generally occurs at or near the meeting line between the elongated cylinder I4 and the flange I9 of each terminal I5. In accordance with this invention the supports I5 are connected to the base and are independent of the elongated cylinder I 4. For ease of connection, and for other reasons, the supports I5 are connected to the base I0 and are independent of the terminals I5 and are also in dependent of the elongated cylinders I4 thereof as shown.

Although the conductor 10 is in all of the different modications electrically connected to the leads 45 and the terminals I5, the leads 45 will in no case be moved when the terminals are bent. This is evident when it is realized that the physical characteristics of the conductor 10 is such that it rather than the lead or support will bend or deform when the terminal I5 is bent or deformed.

It is apparent that the conductorl maybe of a wide variety of forms, shapes, lengths, cross sections and compositions. But two types are shown for the purpose of illustration. In one form, it may be a coiled conductor which is readily iiexible lengthwise and the length of the conductor may be much greater than the distance between its ends. In the other form, shown in Figures 10 and 11, it may be a hollow copper or brass cylinder whose intermediate portion located between the flange I9 and the upper face of base I0 has slots therein and is corrugated at 90 to provide an easily and readily flexible connection. The cross section of this corrugated and cut out portion may be of such magnitude that this conductor will melt thereat and break the circuit in the event of an overload and thus also act as a fuse. Whatever the type of conductor, it should become distorted upon distortion of the terminals without imparting any movement to the leads.

In all of the modifications, there is shown a base I0, contact terminals I5 secured to the base at portions thereof adjacent the pair of openings therein. The supports I6 are secured to the base at portions thereof adjacent the pair of openings therein and extend away from said terminal I5 and are concentric therewith.

The supports I6 may be metallic electrical conductors or they may be glass The supports may be adhesively or fusedly secured to the base. The mount may be carried by supports I 6 by securing leads 45 thereto. 'I'he conductors I0 connect the terminal I5 and supports It and may be of any desired form and shape and may also have a portion thereof adapted to act as a fuse. This entire assembly may be produced as a single and unitary structure and requires but a bulb 5I which has its neck sealed to the upper edge of the base I0 to complete the device which may be ex- 'iausted through tube 92 which is thereafter pinched.

When a horizontal force is applied to the part I4 of the thimbles I5, thimble I5 is rigidly anchored at its point of connection with the ends of tube I2 or Il and the part I4 is swung about the inner periphery of flange I9 whereby the axis of the part I4 and part 2li are now out of alignment, but the connection between the terminal I5 and the tube I2 or I3 is maintained unimpaired. This particular condition may be attained because said inner periphery is the weakest point of each terminal. These terminals I5 are of such dimensions that they will support the entire weight of the devices. may be electrically connected in the usual manner to a socket by inserting the terminals I5 into the metallic sleeves of the socket. Then the workman firmly tightens one of the set screws against one of the terminals and then hetightens the other set screw against the other terminal I4, If one of said sleeves oi' said socket is oversize, one of the terminals I5 will be distorted due to the pressure of the set screw.

The set screw will force the part I4 to swingabout the inner periphery of the flange Il so that the vertical axis of the part I4 will be disposed at an angle to the vertical and to the vertical axis of the part 20. As the part I4 swings about the inner periphery of flange I9, the connection vbetween part and tube I! or Il is maintained unimpaired and the connector 1I when it is a coiled flexible member is distorted and is extended and when it is a cylinder with corrugations as shown in Figures 10 and 11, it is deformed and extended somewhat. In either case there is a iiexi-ble joint between the terminals I5 and the supports I8 so that upon distortion of the terminals I5 by swinging of part I4 with respect to part 20 thereof, the connector 1I or 90 will become distorted without causing any distortion of either supports I6 or the rigid supports 45. Because of this feature, the position of the mount or the elements of the mount with respect to each other are not varied when the terminals I5 are distorted in the course of securing the lamp in a socket.

Although the invention has been described in detail the same is not to vbe limited to the particular construction illustrated and described because the construction is subject to modincations.

Common or like subject matter of invention disclosed in this application and in my application Serial No. 200,062 filed April 5, 1938, is claimed in this application.

What is claimed:

1. A unitary assembly comprising an insulating 'base having a plurality of openings therein, contact terminals secured to said base at portions thereof adjacent said openings and extending outwardly therefrom and supports independent of said terminals secured to said base at portions thereof adjacent said openings and extending away from said terminals.

2. A unitary assembly comprising an insulating base having a plurality of openings therein, contact terminals secured to said base at portions thereof adjacent said openings and extending outwardly therefrom, electrical conducting supports independent of said terminals secured to said base and conducting means electricaily connecting said terminals and said supports, said means adapted to be deformed upon deformation of said terminals without moving said supports.

3. A- unitary assembly comprising a glass cup having a plurality of openings in the bottom thereof, contact terminals hermetically sealed to said cup at portions thereof adjacent said openings and extending therefrom, a plurality A device embodying my inventionI of conducting supports sealed to said cup at portions thereof adjacent said openings, said supports being independent of said terminals and conducting means extending through said openings and electrically connecting said supports and said terminals, said conducting means adapted vto be deformed without moving said supports upon deformation of said terminals.

4. A unitary assembly comprising a glass cup having a plurality of openings in the bottom thereof, contact terminals secured to said cup at portions thereof adjacent said openings, each terminal including a cylinder closed at one end and a larger diameter cylinder, means connecting one enxi of saidlarger cylinder to the other end of said first cylinder and the other end of said larger cylinder hermetically sealed to said cup and rigid leads connected to said cup and being independent of said first cylinder whereby said rst cylinder may be moved with respect to said cup without moving said leads.

5. A unitary structure adapted to have 4a glass bulb sealed thereto and comprising an insulating base having a plurality of spaced openings therein, contact terminals secured to said base at portions thereof adjacent said openings and extending away from said base, a translation element, supporting means for said translation element, said supporting means so carried by said base and electrically connected to said contact terminals that when one of said terminals is moved with respect to the other, the position of said supporting means with respect to said base remains substantially unchanged, said base adapted to have a glass bulb sealed thereto.

6. A unitary structure comprising a glass cup having a pair of spaced openings in the bottom thereof, a pair of contact terminals secured to said cup at portions thereof adjacent said openings and extending away from said cup, a translation element, a plurality of rigid leads for supporting said element, said leads so carried by said cup and means electrically connecting said leads to said terminals that when the outer portion of one of said terminals is moved with respect to said'cup, the position of the lead electrically connected thereto remains substantially unchanged.

7. A unitary structure comprising a glass base having a plurality lof spaced openings therein, contact terminals secured to said base at portions thereof adjacent said openings and extending away from said base, a translation element, rigid leads for said element, means for securing said leads to said base whereby said leads are supported by said base, said means being independent of said terminals whereby said terminals may be moved with respect to each other without moving said leads, and means electrically connecting said leads and said terminals.

8. A unitary structure comprising a glass cup having a plurality of spaced openings in the bottom thereof, contact terminals secured to said cup at portions thereof adjacent said openings and extending away from said cup, a translation element, rigid supports for said element, conducting means electrically connecting said terminals and ,said translation element and means independent of said terminals securing said supports to said cup.

9. A unitary assembly comprising a mount including a translation element and a plurality of rigid supports therefor, a glass cup having a` plurality of openings in the bottom thereof, a plurality of contact terminals secured to said cup at portions thereof adjacent said openings and extending therefrom, means securing said supports to said cup and being independent of said terminals and conducting means electrically connecting said supports and said terminals, said conducting means adapted to be deformed while the position of said supports remain unchanged upon deformation of one of said terminals. v

10. A unitary assembly comprising a mount, including a translation element and a plurality of rigid leads, a glass cup having a plurality of openings in the bottom thereof, contact terminals secured to said cup at portions thereof adjacent said openings and extending therefrom, conducting supports secured to said cup at portions thereof adjacent said openings, means electrically connecting said supports and said terminals said means adapted to be deformed upon movement of one of said terminals with respect tosaid cup Without moving said support.

11. A unitary assembly comprising a mount, including a translation element and a pair of rigid leads, a glass cup having a plurality of openings in the bottom thereof, contact terminals secured to said cup at portions thereof adjacent said openings and extending therefrom, conducting supports for said leads, means securing said supports to said cup at portions thereof adjacent said openings, said means being independent of said terminals, means securing said leads to said supports and means electrically connecting said leads to said supports, said last means adapted to be moved upon movement of one of said terminals with respect to said cup without moving the support electrically connected thereto.

12. A unitary assembly comprising a mount, including a translation element and a pair of rigid leads, a glass cup having a plurality of openings in the bottom thereof, contact terminals secured to said cup at portions thereof adjacent said openings, means for securing said leads to said cup, said means being independent of said terminals, and ,means electrically connecting said leads and said terminals, said last means adapted to be moved upon movement of one of said'terminals with respect to said cup without moving said' leads.

13. A unitary assembly comprising a mount, including a translation element and a pair of rigid leads, a glass cup having a plurality of openings in the bottom thereof, contact terminals secured to said cup at portions thereof adjacent said openings, means for securing said leads to said cup, said means being independent of said terminals, conducting means electrically connecting said leads and said terminals, a portion of said conducting means being extensible lengthwise.

14. A unitary assembly comprising a mount, including a translation element and a pair of rigid leads, a glass cup having a plurality of openings therein, contact terminals secured to said cup at portions thereof adjacent said openings, conducting means securing said leads to said cup, said means being independent of said terminals and means electrically connecting said first means to said terminals, said second means secured to'said first means and said terminals, a

portion of said second means being extensible.

15. A lamp comprising a bulb, a cup sealed to said bulb and having a pair of openings in the bottom thereof, a mount including a translation element and a plurality of rigid leads, contact terminals secured to said cup and extending outwardly therefrom, means for securing said leads to said cup, said means being independent of said terminals. and means electrically connecting said leads and said terminals, said last means extending through said openings and adapted to be moved upon movementl of said lterminals with respect to said cup without moving said leads.

.16. An electric device comprising an envelope having an opening, a contact element secured to said envelope at a portion thereof adjacent said opening, a support element secured to said envelope at a portion thereof adjacent said opening, only one of said elements hermetically sealing said opening, means electrically connecting said elements, said means adapted to be deformed without moving said support upon movement of a portion of said contact element with respect to said envelope.

17. An electric device comprising an insulating base, a glass bulb sealed thereto, said base having a plurality of spaced openings therein, contact terminals secured to said base at portions thereof adjacent said openings and extending away from said base, a translation element located in said bulb, supporting means for said translation element, said supporting means so carried by said base and electrically connected to said contact terminals that when one of said terminals is moved with respect to the other, the position of said supporting means with respect to said base remains substantially unchanged.

18. A unitary assembly comprising an insulating base having a plurality of openings therein, contact terminals secured to said base at portions thereof adjacent said openings and extending outwardly therefrom, supports independent of said terminals secured to said base at portions thereof adjacent said openings and extending away from said terminals and means electrically connecting said terminals and supports, said means adapted to be deformed upon deformation of said terminals without moving said supports, the surface length of said meansbeing greater than the shortest distance between the points of connection of said supports and terminais with said means.

19. An electric device comprising a bulb. a base sealed thereto, said base composed of insulating material and having a plurality of openings therein, contact terminals secured to said base at portions thereof adjacent said openings and aandoet extending outwardly therefrom, electrical conducting supports independent of said terminals secured to said base and conducting means electrically connecting said terminals and said supports, said means adapted to be deformed upon deformation of said terminals without moving said supports, said` means located in said openings.

20. An electric device comprising a bulb, a base sealed thereto, said base being composed of vitreous material and having an opening therein, a contact terminal hermetically sealed to said base at a portion thereof adjacent said opening and extending outwardly therefrom, a conducting support sealed to said base at a portion thereof adjacent said opening, said support being independent of said terminal and conducting means extending through said opening and electrically connecting said support and said terminal, said conducting means adapted to be deformed without moving said support upon deformation of said terminal.

2l. An. electric device comprising a vitreous bulb, a glass cup sealed to said bulb, said cup having an opening therein, a contact terminal secured to said cup at a portion thereof adjacent said opening, a hollowv vitreous support integral with said cup, a conducting support secured to said vitreous support, conducting means electrically connecting said terminal and conducting support, said conducting means extending through said opening and said vitreous support, said means adapted to be deformed upon deformation of said terminal without moving said conducting support.

22. An electric device comprising a vitreous bulb, a glass cup sealed to said bulb, said cup having a plurality of openings therein, contact terminals sealed to said cup at portions thereof adjacent said openings, said terminals closing said openings, hollow conducting supports ring sealed to portions of said cup adjacent said openings, means closing the upper ends of said conducting supports, rigid leads secured to said supports, a translation element connected to said leads and conducting means electrically connecting said terminals and said supports, said conducting means adapted to be deformed without moving said supports upon deformation of said terminals.

JACOB GLASSBERG.

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