USRE13081E - Assigbtob - Google Patents

Description

R. E. MILLER. INGANDESCENT LAMP SOCKET.

APPLICATION FILED DBG. 9, 1907,

Reissued Feb. 8, 1910.

W/TNESSES UNITED STATES PATENT oEEIoE.

ROBERT R. MILLER, 0F TOLEDO, OHTO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO PASS &, SEYMOUR/LINC., 0F SOLVAY, NEW YORK.

INCANDESCENT-LAMP SOCKET.

Specication'of Reissued Letters Patent. Reissued Feb. 8, 1910.

Original No. 813,568, dated February 27, 1906, Serial No. 239,390. Application. for reissue filed December 9, 1907. Serial1\1o.405,836.`

To all whom it may concern:

Be it known that I, ROBERT R. MILLER, a

citizen of the United States, residing at Toone hand, grasping the key only, and unless the lamp-socket is upon a rigid fixture the wires are subjected to an unnecessary strain, often destroying the insulation and breaking the Wires, and the filament of the lamp is in danger of being broken by the jar upon it every time the key is turned to open-and closejthe circuit.

One object of my invention is to provide a lever by means of which the circuit may be either opened or closed, while the lamp* socket is grasped and firmly held in one hand by a pressure .of the thumb or finger of that hand upon the switch lever.

A further object is to provide a lampsocket of fewer parts and of more compact and stable construction, the same being .adapted for attachment to the various forms oit incandescent lamps, including the Edison,

the Sawyer & Mann, and the Thomson-` Houston.

To these ends-the invention consists in thel improvements which I will now proceed to describe and claim.

In the accompanying drawings, forming a part of this speciication, Figure 1 is a vertical sectional view of the mechanism along the'line S S of Fig. 3. Fig. 2 is an isometric view showing an alternote form of constructionof the switch-lever. Fig. 3 is a plan view of Fig. 1. Fig. Il is an elevation of a metal-cased socket, partly in section. Fig. 5 is atop view of the lower section of an all-porcelain socket, showing the porcelain only; and Fig. 6 is an elevation oi an all-porcelain socket. 'By an all-porcelain socket I-mean a lamp-holder and socket in which all metallic parts and connections are v the lever. .v

contained in a porcelaii'fbody, makin a lamp'lsocket-coinplete without a metal jac et.

IThe-same -l'ttrs o'E reference indicate the same parts'inAal-l the iigures.``

In the drawings, A represents the external portion of the'switch-lever, presenting a fiat"-l tened surface. onvwhich to applythe pressure of the thumb or Z is kuse swit C11-latinipressi; fuiqflil'fiied at' f what is, in effect, ab. 51

R, near'ilthe center` triangle, "fw-ith each.l acute angle. lthereof an( 89;. finger required to loperate arm of the lever. r, The external portions oi"""';l the switch-'lever will bemade entirely o hard rubber@mothern suitable insulating Ina-" A terial. The-spring B is held bythe screw4` voi C firmly between the center contact-post U and the porcelain body L, and said sprin is adapted tofclosebtlrecircuit when presse and firm-ly held: by the-'levenagainst the nut F and' t'o"'break the circuit by springing away from its contact' with the nutF into the position shown by the dotted line B; In order to accomplish a quick breaking of the circuit when the spring B is released from 'miA its contact with the nut F, I provide as a preferable form of construction an extension-lever T, pivoted to the main switch. lever at W and fulcrumed-thereonby the two raised clips U and readily understood, when the ijfswitch-lever and the spring are in .the position shown by V. vAs will bethe dotted lines and pressure is applied upon' v the then elevated arm of the external porvtion of the switch-lever the clip V engages the extension lever T and forces it against the spring B until the spring is thus forced into contact with the nut F, where it is held until a reversey motion of the switch-lever break away from its contact with F. To

-break the circuit, pressure is applied to the then elevated external arm of the switchlever until the clip U engages the extensionlever T, causing it to move downward along l -the spring B, still holding it in contact with An alterna-te f orni of constructing the,l

switch-leyer is shown in Fig. 2, which lever may lbe :foundo operate quickly enough for all practical purposes without using an auxiliary or extension lever thereon. K

vThe screw H,.engaging the. nut F, isv also a binding post adapted to clamp one v.of the supply-wires.

'ihe width of the secured end ofthe spring B is such as to lit snugly in the rectangular 'opening in the porcelain' block L, while the free end thereof is narrower to allow it to lmove freely in said' opening. The center contact-stud D is slightlyflattened on one side or recessed to receive the spring B and is'held securely in place by the screw C, which screw serves the double purpose of holding the spring B and the stud D in position.

lThe screw G is a binding-post to which the other feed-wire is attached, and the nut upon said. screw is porcelain block in position in the metal case J. A fiber lining K, required by. underwriters, is placed between the metal jacket and the porcelain block. The block L is preferablymade of one solid piece, but can e made of two halves properly notched or otherwise fitted together. On eitherside of the'lever Z, I provide a friction-washer Y to assist in. retaining the lever in its proper several parts position.

Inadapting this mechanism Vto van allporcelain socket. the body of the socket is made in two parts, the upper portion N through which the live wiresenier at Q, Q, telescoping yupon the lower portion. M and being held thereon by the countersunk screw *G and the nut P, which nut is sealed in an opening in the top of the part N. Thus there is no metallic portion exposed, and the socket can be lunited or separated without disturbing the stud D.

The construction and arrangement of the thought that the operation of the device i" will be readily understood.-

The path of the Current when the lamp ris turned on is by a conducting-wire upon the screw binding-post G, thence to the nut E, to the outer 'lamp-contact, thence through the lamp by the center lamp-contact, to the stud D, to the spring B, to the nut F, toff;` the screw binding-post H, and to the other;v

conductin wire. rlhe method oll making and hre 'ng acircuitv has already been fully" eaplained.

being thus made known, it is' I claim, and desire .circuit and to tact-screw stud D by Havingthus described my inyention, what to secure by Letters Patent, 1s-

l. In an incandescent-lamp socket, a triangular switch-lever fulcrumed at or near the center of the triangle and having upon the inner arm thereof an extension-lever, pivoted thereto and fulcrumed thereon by projections upon the switch-lever on either side thereof and spaced a little wider than the width of the extension-lever, adapted to engage a spring contact-piece to closeI the quickly release the same in breaking the `circuit, all substantially as de scribed.

2. In an incandescent-lamp socket, the combination of an insulating-block L, the center contact-stud D, the contact-spring B secured to the stud by the screw C set at an angle to prevent the turning of the stud D, the nut F connected with one of the circuitwires and adapted to complete a circuit by contactwith the spring B, and the triangular switch-lever pivoted on the ulcrum R at or near the centerof the triangle and ladapted to engage the spring B to open or close the circult by pressing upon the alternately-elevated outer arms of said lever, all substantially as set forth.

3. In an incandescent lamp socket, the

combination of an insulating-block M, an

insulating block N adapted to telescope thereon, the bolt O and nut I), the outer con- G and nut E, the center contactstud D, the contact-s ring B secured to the the screw set/at an angle to prevent the turning of the stud, the nut F connected with a circuit wire and adapted to complete a circuit by contact with the spring B, and the triangular switch-lever pivoted on the fulcrum R near the center of the triangle and adapted to engage the spring B to open or close the circuit by pressing upon the alternately-elevated outer arms of .said lever, all substantially as set forth.A

4. In an incandescent lamp socket, a rocking-lever suitably pivoted in the socket, an

extension-lever pivoted to the inner end of the rocking-lever, means to limit the swing of the extension-lever on the rocking-lever, and a spring-piece adaptedto make and break'the circuit, said extension-lever being adapted to engage with the spring-piece to close4 the circuit and vto release the springpiece and open the circuit, as the rockinglever is rockedin one direction or the other.

5. Inan electric lamp key socket, a porcelain base, a rocking lever suitably' pivoted in an opening in the base, said lever having two endswadapted to extend alternately beyond the outer surface zotthe socket to be ilo engaged in turn by the hand, an extension lever pivoted to the inner end of the rocking l lever, means to limit the swing of the. eX-

tension lever on the rocking lever, and a spring-piece suitably supported on the base and adapted to make and break the circuit, said extension lever being'adapted to engage with the spring-piece and operate thel spring piece alternately to make and break the circuit, as the roekingdever is rocked in one direction or the other.

6. In an incandescent lamp socket, a roeking-lever suitably pivoted in the socket, means Vto make and break the circuit, an engaging 'part carried by the rocking-lever in position to cause making and breakingof the circuit by its engagement upon the roeking of the lever, said part being' permitted a slight free movement to permit a quick breaking ot the circuit.

7. In an incandescent lamp socket, a suitable base of insulatingT material, a rocking key-lever suitably pivoted in an opening in the base, said lever having two ends adapted to extend alternately beyond the outer In testimony whereof, I have signed my name to this specification, two ,subscrlblng Wltnesses.

' ROBERT R. MILLER.

in the presence of Witnesses:

' W. H. Roose,

Fonnrcn 'BILFORIL part when the key

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