US672642A - Electric incandescent lamp. - Google Patents

Description

No. 672,642. Patented Apr. 23, l90l. L.J. P. HOLLUB &. H. MIGNAL.

ELECTRIC INCANDESCENT LAMP.

(Application filed Nov. 8, 1900.; (Np Model.) 2 Sheets-Sheet l.

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A7706NEYS No. 672,642. Patented Apr. 23, I90l. L. J. P. HULLUB &. H. MIGNAL. ELECTRIC INCANDESCENT LAMP.

(NDYMOGBL) 7 (Application filed Nov-8. 1900" 2 shuns-sheet 2 \\\\\\\\\\\l|llIIIIIIIIIIHIII/l/l/ w/rwfsszs- Ute STTES FFICE.

LOUIS JEAN PAUL HOLLUB AND HENRY MIGNAL, OF PARIS, FRANCE.

ELE CTRIC INCANDESCENT LAM P.

SPECIFICATION forming part of Letters Patent No. 672,642, dated April 23, 1901.-

Application filed November 8, 1900. berial No. 35,873. (No model.)

To whom it may concern.-

Be it known that we, LOUIS JEAN PAUL HOLL'UB, engineer, of 17 Avenue Rapp, and HENRY MIGNAL, gentleman,of 31 Rue Richer, Paris, in the Republic of France, have invented Improvements Relating to Electric Incandescent Lamps, of which the following is 1 socket which forms a nut.

taken on the line AB of Fig. 9.

a full, clear, and exact description.

This invention relates to improvements in fittings forincandescent electric lamps, and comprising a T- piece which it is only necessary to rotate through ninety degrees in order to fix it in or release it from a socket proa vided with a diaphragm having an oblong aperture through whichthis T-piece is adapted to pass.

In order that ourinvention may be readily understood and carried into effect, we will U describe the same fully with reference to the accompanying drawings, in which- Figure 1 is a front elevation of a portion of a lamp embodying our invention and provided with the T- shaped fitting. Fig.2 is

an external view of an improved socket. Fig.

.3 is avertical section, and Fig. a plan view,

tionand upon a larger scale, of a part which constitutes a portion of the socket represented in Figs. 7, 8, and 9, this section being Fig. 11 rep resents the same part as shown in Fig. 10, but in section on the line C D of Fig. 9. Fig. 12

is an elevation of a modified form of socket with a screw attachment for mounting in a Fig. 13 shows in vertical section the modified form of fitting represented in Fig. 12. Fig. 14 is a corresponding plan view. Fig. 15 shows a lamp provided with a T- shaped fitting mounted in the socket and the attachment represented in Fig. 13. Fig. 16 shows, upon a larger scale and in section on the line E F of Fig. 14, the fitting shown in elevation in Figs. 12 and 13. Fig. 17 shows the same fitting in section on the line G H of Fig. 1 1. Fig. 18 shows in elevation a screw-socket, into which of insulating material 0.

is screwed the fitting represented in Figs. 12, 13, 14:, 16, and 17. Fig. 19 shows the same socket in plan.

As shown in the drawings, the improvements which we have introduced into the mounting of incandescent electric lamps provided with a T- shaped part z, as represented in Fig. 1, and which are adapted to be fixed by engaging this T- piece in an oblong aperture B, Fig. 4, and then rotating it through ninety degrees in order that this T- piece may be engaged beneath a diaphragm d,consist in providing the sockets a, Figs. 2 to 6, above the spring-contacts b with a disk The T- piece of the lamp bears against this disk when it is engaged or disengaged from the diaphragm d in such a manner that the lamp is always guided. For this purpose the disk 0 is traversed by two small metal cylinders e, in which the spring-contacts b are engaged. This establishes an electric contact between the contact-pieces 'ot the attachment and those of the lamp. With this arrangement there is no danger of fracturing the T- piece of the lamp in rotating it, which might happen if the disk were not provided, as the wings of the T- piece might engage between the two contacts b of the support.

In Figs. 7 to 11 we have shown a modification of the service which obviates the liability of fracturing the T-piece of the lamp. This modification comprises a mass of insulating material f, provided with two metal cylinders g g, in which are engaged the Wires of the electric circuit. The diaphragm d instead of being fixed in the socket Ct is provided with two guide-r0ds h, with springs t'. In this manner the diaphragm d is movable, owing to the elasticity of the springs, so that on introducing the T-piece of the lamp into the aperture B of the diaphragm and on rotating it this latter assumes a perpendicular position, raising the diaphragm slightly. The

wings of the T-piece enter cavities d of the diaphragm and notches j, Fig. 8, formed in the contacts g in such a manner that this T piece may be manipulated Without danger of fracturing it.

In the modification represented in Figs. 12 to 19 the T-piece also engages in an oblong aperture formed in a disk (1. The lampis then rotated through ninety degrees, as above stated; but the specialty of this modification is comprises a metal base 70, which is electricstantially flush with the top of said body 35 ally connected to the contact g, while the contact g is electrically connected to a metal wire Z, which completes a portion of the screwthread which is removed upon the support. The support thus constituted screws into the socket 2, Figs. 18 and 19. The base is is in contact with the spring m, arranged-in the bottom of the socket and in electrical com munication with a metal liner'o, arranged withinthe socket and screw-threaded- This liner receives the current coming from the terminal p by the intermediary of a part q.

The forms, details, accessories, materials, and dimensionsof thevarious-devices serving toconstitute our improved lampmay of course be varied Without thereby aifecting the principle of our invention.

-We claim 1. The combinationwithalamphavinga'T shaped head, of a socket, a diskor diaphragm therein with a central opening to receive said head, 1 said head interlocking with, the dia phragm' when the parts are givena quarter-- turn, an insulating-body arranged below the said disk and contacts carriedby said body,,' the'heads of the contacts being'fl'ushor subwhereby said T-shaped' head is"prevented from entering between the contacts and be? ing broken when turned to interlock the parts,

substantially as described. 2. The combination with a lamp havinga T- shaped'head, of a socket, a disk or diaphragm therein having an opening through which the head can pass to interlock with the under side of the disk, an insulating-body arranged beneath the disk and contacts carried thereby, said disk and insulatingbody having movement relative to each, the heads of said contacts being flush or substantially flush with the top of said body, substantially as described.

, 3. The combination withalamphavingaT- shaped head, of a socket, a disk or diaphragm therein h'aving'an opening through which the head can. pass to interlock with the under side of the disk, an insulating-body arranged beneath the disk, and contacts carried there- .by, and springs for drawing the disk toward said insulatingb'ody, substantially as defscribed. p i 4. The-combination with alain'p havinga T"- sbaped head, of a socket, a di'sktherein" adapted" tointerlock with said head, an insulatingbod'y below the disk, contacts carr'ied'thercby',

a stem at the end ofsaid socket, electrical connection from one contact to said "stem, the insulated portion having athreaded periphery, a wire forming one 'of' said threads, an'

electrical connection between the wire. and said contact, and a second socket, having a liner ad-apte'd to form a contact with said Qwire, and a platein the bottom of the" second socket adapted to form a'contact with said ;.'stem, substantially as described. I v j The foregoingspecificatio'n of ourinlpro'vemen ts relating to electric incandes'centlamps signed by fusthis 25th day of O'ctober; 1900".

. LOUIS JEAN PAUL'HOLLUB. HEN RYfMIGNAL. g I Witnesses:

. EDWARD P. M'AoL'EAN,

MAURICE H. PIGN-ET.

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