US1100300A - Attachment for the switches of electric lamps. - Google Patents

Description

A. HERSKOVITZ.

ATTACHMENT FOR THE SWITCHES 0F ELEGTRIG LAMPS.

APPLICATION FILED JAN. 17, 1914.

1 1 00,300, Patented June 16, 1914.

I 2 I P1; 1 K I 612 D Cl WITNESSES: INVENTOB 0,; Q ZL MW m y A 7TORIVEY lli ABRAHAM HERSKOVITZ, OF CHICAGO, ILLINOIS.

ALTTIRCHMENT FOR THE SWITCHES OF ELECTRIC LAMPS.

specification of Letters Patent.

Fatented dune Mi, 191 d.

hpplication'filcd January 17, 1914. Serial No. 812,707.

To all whom it may concern:

Be it lrnown I, ABRAHAM Hnnsnovrrz a citizen of the United @tates, residing at Ol Tcago, in the county of Cool; and State of ill inois, have invented certain new and usei'u improvements in Attachments for the Switches 01 Electric Lamps, of which the following is a specification.

Usually the switch of an electric lamp of the incandescent type is concealed within a fitting which has a socket in which the lamp bulb is secured by screw threads or some other suitable means, and the movable member of the switch has a stem which is relatively to the general direction of the length of the bulb and the fitting carrying it, which stem terminates on the outside or" the fitting in a T-head or turn button,

which is adapted to be grasped for turning the stem and thereby operating the switch. in many situations this turn-button is not conveniently accessible and heretofore it has been proposed to provide an attachment in the form of a lever-arm having means for removably clipping or clamping it to the turn button, and a pull-chain depending from one or each end of the lever-arm, so 1 when the pull-chain is drawn down the switch will be operated in one direction or the other, according to which end of the lever-arm is moved downward. This leverarm is usually radial with respect to the axis oi the switch-stem and in some instances extends equal distances. on opposite i sides thereof, and has a pull-chain (and here it may be observed that for the purj poses of this application chains, cords, wires,

slender rods, and other devices of a similar 1' nature that Wlll transmit tensile strains are i to be regarded as equivalents) depending from each of its ends. or the outer end of each or llIS' fiImS. so that by drawing down one pull-chain the switch is moved in one direction-say to close the circuit and ii ht the lamp-and by drawing down the ot er pull-chain the switch is moved in the.opposite direction-say to open the circuit and extinguish the light.

Thus far if have described nothing that has not heretofore-been done and I do not herein claim broadly anything thus for deobject of the present invention to obviate ()ne of these objections is their narrow range of ad ustability, which limits their adaptability to turnbuttons which vary in size, albeit these turn buttons of standard lamps are universally of the same general T-shape.

With this objection to heretofore existing attachments of the class described in view, one specific object of the present invention is to provide such anat-tachmentwith a clamp or clip which shall have a wide range of adjustability or accommodation to the end that it may be applied to T-headed turnbuttons which vary materially in size.

Another objection to attachments of the class described, as heretofore constructed is, that their grasp or hold upon the turn-button is unstable and. insecure, resulting in more or less play or lost motion between theleverarm of the attachment and the turnbutton and with this defect in heretofore existing attachments of the class described in View, another specific objectof the present invention is to provide such an attach ment with means for effecting a firm connection of the lever-arm to the T-headed turn-button.

Another serious objection to attaclnnents of the class described. as heretofore coir structed, is their cost of production incident to details in their construction, and with this in view still another specific object of the present invention is to provide such an attachment of such simple construction that its cost of production will be low as compared with others of a like nature.

With these and other pl j ects in view. the present invention consists iii the features of novelty that are hereinafter describml with reference to the accompanying drawing' which is made a part of this specification, and in which Figure 1 is an elevation showing one otthe improved attachments in place on an electric lamp of the incandescent type. Fig. 2 also is an elevation of'onc of the improved attachmeuts, viewed in the direction the direct-ion of the arrow.

- 1 foregoing figures the turn-button and more or less of the lamp socket or fittingare shown. Fig. 4 is still another elevation of one of the improved attachments by itself" viewed from still another position.

The attachment as a whole may be considered as comprisin a lever-arm, A, pullchains, B, and B, epending from opposite ends of this lever-arm or, in other -words, one depending from the outer end of each of the two arms of the so-called leverarm, and a clip or clamp which is carried at the mid-length of the lever-arm, A, and thereby. defines the two arms oing to make up this lever-arm. K As before intimated, the so-called pulhchains may be chains strictly so-called or they may be cords, cables, wires, slender rods, or other things of a like nature which are adapted to transmit tensile strains to the end that when either of these so-called chains is pulled or drawn downward it will draw downward the corresponding end of the lever-arm to which it is attached. The lever-arm and its clamp are preferably formed of a single piece of torsionally and laterally elastic wire bent in a manner appropriate to giving the several parts the characteristics hereinafter described. That is to say, the wire when properly bent has loops, a and a, which form the terminals of the composite leverarm, A, and from which the pull-chains, B and B, depend, respectively. Extending from one of these loops to the other and preferably entering into the construction of one of themsay the loop athe wire of which the lever-arm is made has a branch, a which, when the attachment is in proper place on a lamp bears against what may be called the top of the T-head, D, of the turnbutton ,and crosses it in a plane which is radial to its axis of movement as is clearly shown in Figs. 2 and 3.

Proceeding from each of the end loops, a and a, and extending toward the other of 'said loops, the wire has branches, a each of which, at about the mid-length of the composite lever-arm has a lateral deflection or bend, C, of substantially U-shape which forms one of the two jaws of the clamp .01 clip. Those portions of the branches, a which are substantially parallel with the general direction of the length of the composite lever-arm may be considered as the shanks of the jaws,-O, and the wire of which the attachment is made being of elastic or spring metal, these shanks will be elastic lat erally and also torsionally. The opposite sides, a", of each of the jaws may be spread apart to accommodate turn-button heads Licence diii erent widths and will clamp the opposite sides of the l liead of the turn button. Clheir'lateral elasticity tends to draw what may be called the crown, c, of each of the jaws into close contact with the under side of the l -head of the turn-button, their to action being transmitted to the so-called top of the "ii-head through the medium of the branch, a the ends of which are normally held against lateral movement relatively to the branches, a by the end portions of the wire of which the composite lever-arm is made, which end portions are wrapped around the several approximately parallel branches of the wire as shown at a".

It will thus be seen that the composite lever-arm is made u of three parallel, or substantially paralle branches of a bent wire, one of which branches is radial with relation to the axis of motion of the turnbutton and the other two of which branches are bent to form, respectively, the two awe of a clip or clamp which is adapted to en gage the T-head of a turn-button, and the opposite sides of which jaws are elastic, to the end that they will accommodate themselves to the T-heads of turn-buttons of dif ferent widths, the branches of which the jaws are fonncd being laterally elastic relatively to the branches first aforesaid to the end that the crowns of the jaws shall be drawn firmly against the under side of the T-head of the turn-button.

hat I claim as new and desire to secure by Letters Patent is 1. in attachment of the class described having in combination a spring clip having two jaws, each of said jaws having a shank, each jaw and its shank being formed or a piece of laterally and torsionally elastic wire having at an intermediate point, a lateral deflection or bend of substantially Ushape, the sides of which are elastic and have a normal tendency to contract or approach each other, and thereby clamp the head of a turn button between them and said shanks being disposed substantially parallel with each other, and means for holding them against bodily lateral. movement relatively to each other whereby the jaws are yieldingly forced toward each other to clamp the head of the turn button between them.

2. An attachment of the class described made of a single piece of elastic wire bent to form three substantially parallel branches, the terminals of the wire being wrapped around so as to unite the several branches and hold them against bodily lateral movement relatively to each other, two said branches being bent to form the jaws of a clip adapted to engage the head of a turn-r biIGl'l in attachment of the class described having a, lever-arm comprising three subfor securing the said branches together and stantially parallel laterally elastic branches, preventing their bodily lateral movement clipping er clamping jaws carried by two of relativelyto each other.

said branches and. adapted to engage the ABRAHAM HERSKOVITZ. 5 under sides of the T-head of the turn-but- Witnesses:

ton while the third ,hranch is ada ted to 'VJOSEPH D. UNGER,

bear upon the top ofsaid. T-head, an means RODNEY Bms'mm.

sums at patent my be obtdnc d to: In cent: oh; by ,addreulng the comatose: a! 2mm,

' Wuhlngton, D. 0;"

Images