US1053178A - Operating mechanism for pull-sockets. - Google Patents

Description

APPLIGATION FILED MAY 6, 1912.

,Patented Feb. 18, 1913.

INVENTOR A TTORNEV Folks runs In um; wumncm c.

HARVEY HUBBELL, OF'IBRIDGEPORT, CONNECTICUT.

OPERATING MECHANISM FOR PULL-S OCKETS.

Specification of Letters Patent. Patented-Feb. 18,-191i3.

Application filed- May 6, 1912. Serial No. 695,475.

Tqall whom it may concern Be. it. known that I, HARVEY HUBBEL a citizen'of the United States, residing at Bridgeport, County of Fairfield, State of Connecticut, have invented an Improvement in-Operating Mechanism for Pull-Sockets,

of which the following is a specification.

Thisinvention relates to pull sockets for incandescent electric lamps and has for its object to provide operating mechanism therefor located :externally to the shell, which shall dispense with the use of a chain within the shell, thus doing away with the part most likely to break and a frequent- Cause of trouble in pull sockets as ordinarily constructed, and which may be readily attached, detached, reversed and adjusted to place the pendant close to or at any required distance from the shell if used in connection with a globe, shade or husk, all changes and repairs being made without disturbing the switch mechanism, shell or cap.

With these and other objects in view, I have devised the novel switch operating mechanism ofwhich the following descrip- %n in connection with the accompanying awing is a specification, reference characters being used to indicate the several parts .2 Figure 1 is an elevation of a pull socket partly broken away toshow a switch mechanism and showing the application thereto ofmy noveloperating mechanism; Fig 2, an elevation'of a pull socketin a reversed position showing the manner in which the operating mechanism may be reversed; F 1g. 3, a perspective ofthe hub and its bracket detached; Fig. 4, a front elevation of the hub and bracket with thelocking spring in lace;'Fig. 5, anelevation of the two-part bracket and operating lever detached; Fig. 6, a side elevation of the two-part bracket .and operating lever detached, the bracket being elongated; Fig. 7 a plan view corresponding therewith; Fig. 8, a plan view on an enlarged scale of the operating member and operating bar detached; Fig. 9, an edge yiew corresponding therewith Fig. 10, a perspective also on an enlarged scale of an ex-.

tension piece for the'operating' bar detached;

and Fig. 11 isa detail view of the operating lever and. the two-part bracket detached, showing the parts free to swing indepelldeutly. a

5 312 denotes'the socket shell, 13 the cap, 14 the insulating lining, .15 the screw shell, 16 andI? the ins ulating blocks, 18 one of the current carrying brackets by'which the insulating blocks are connected, 19-the switch mechanism, 20 an operating member there for and 21 arr-operating bar which connects the operating member of the switch to the.

operating lever are independent of the shell not in the circuit. The hub is provided in its outer face with recesses 30 and .in one side-with a slot 31 adapted to receive one arm of a U-shaped locking spring 32 as will i be more fully explained. Bracket members.

are cut away at their outer ends and inner sides at the top to form a recess 33 which receives the operating lever freely. -The members are also provided with lugs 34 whichare received in recesses 30 in the hub and with vertical grooves or slots 35, either of whichis adapted to be engaged by the arm of the locking spring lying in slot 31 in the hub when the groove and slot are in alinement to detachably secure the two-part bracket to the hub. At the inner ends of the members are bevels 88 which make it easy to expand the spring when the bracket 1 is forced into the hub after which the spring engages one of the grooves 35. When the two.part bracket is elongated as in Figs. 6 and 7, it is-preferably additionally provided with a lug or lugs 36 which engage the face of the hub to give an additional bearing point-land prevent tilting of the bracket. Where a short bracket is used, as in Figs.

1 and 2, the arms 27 of the bracket members I are in engagement with the face of the hub and form an additional bearing for the bracket upon the hub.

The inner end of operating bar 21 is pivoted to the operating member, as at 37, and

the outer end is detachably connected to the operating lever. In practice, I"p referably use an lnsulating operat ng member wh ch I will not now describe in detail as specifically it forms no portion of the present'invent-ion 1 and is moreover described and claimed in another application for Letters Patent. In the present instance I have shown the operating bar as provided with a slot 22 which is adapted to 'engage'a hook 239 on the operating lever. In addition to the insulation of the operating bar from the switch .mecha- IllSlIl by means of the ins'ulating operating member, it should be understood that the operating bar passesireely through the hub and two-part bracket. having no contact with either and that the hub and bracket are themselves insulated as they have no contact with any parts except the insulating blocks.

I Should it be required to use. a pull socket in connection with a globe, shade or husk, and carry the pendant away from the shell, the only change required is to provide a twopart bracketof the required length and to use-an extension piece 40 in connection with the operating bar.- In Figs. (3 and 7, I have. illustrated an elongated two-part bracket comprising two elongated bracket members formed as before with the addition of stop lug or lugs 36; The slot 22 at the'outer end of the operating bar is adapted to be engaged by hook 39 on the operating lever or by. a hook 41 on an extension piece 40 (see Fig. 10) which is itself provided with a slot 42 adapted to be engaged by the hook on the operating lever. It will, of course, be understood that extension pieces are provided of any required length to correspond with the additional lengthof the two-part brackets,

that is, the elongation of the bracket members beyond the ordinary short form, shown in Figs. 1 and ,2. If preferred, the extension ieces may be dis ensed with and operatin I def.

ars of varying engths may be provi To reverse the socket, that is, to change it from the position shown in'Fig. 1 to that in Fig; 2, or viceversa, it being understood that the operating lever should always. project conditions of use butits power may be.

readily overcome by direct pull outward upon the bracket. As soon as the bracket has been entirely disengaged. from the hub the member's will turn freely on'pivot 23 as clearly shown in Fig. 11, which enables the operator to readily disengage the operating lever from the operating bar or from an extension piece. To reassemble, hook 39 of the oper'ating'lever is engaged with the operating bar, or an extensionpiece, the members of the two-part bracket are swung to place, as in Fig. 6, with the operating bar inclosed by the. concavo-convex members and then the end of the bracket is pressed into the hub,

the beveledend of one of the members actbracket to the ing to expand the locking spring 'which an instant later snaps into the roove 35 in one of the bracket members, tius locking the hub. It is unnecessarv in making any ofthe ordinary changes and adjustments to interfere in any way with the spefi or cap or any mechanism within the sie Having thus described my invention, I claim:

1. In a pull socket, the combination with a shell and switch mechanism, of a detachable two-part bracket independent of the shell, an operating lever pivoted to said bracket and an operating bar intermediate the switch mechanismand the operating lever.

'2. In a pull socket, the combination with insulating blocks, switch mechanism and a hub secured to the insulating blocks, of a two part bracket detachably secured to the hub, an operating leverpivoted to said bracket and an operating bar intermediate the switch mechanism and the operating lever.

3. In a pull socket, the combination with an insulated hub, of a bracket detachably secured to said hub, said bracket comprising members having depending arms and an operating member pivoted between said arms.

4.. In a pull socket, the combination with an insulated hub having recesses in its face, of a detachable bracket comprising members adapted to pass within the hub and bers and means for detachably securing the bracket to the hub.

6. In a pull socket, the combination with an insulated hub having recesses in its face and in one side a slot, of a bracket comprising members having lugs adapted to engage the recesses and grooves either of which is adapted to aline with the slot in the hub and a U-shaped locking spring adapted to engage the slot and either of the grooves to detachably lock the bracket to the hub.

7. In a pullsocket, the combination with an'insulated hub, of a bracket comprising concavo convex members adapted to pass within the hub and having depending arms, an operating lever 'loosely' pivoted between the arms leaving the members free. to swing independently when detached, an operatin bar adapted to engage the operating lever and to be inclosed between the socket members and means for detachably locking the bracketto the hub. r

' 8. In a pull socket, the combination with an insulated hub having recesses in its face and in one side a slot, of a bracket comprising concavo-convex members having dependingarms, each member having a lug to engage-one of thevrecesses. and a groove,

an operating lever loosely pivoted between the arms leaving the members free to swing independently when detached, an operating bar adapted to engage the operating lever and to be inclosed between the members and a U-shaped locking spring adapted to engage the slot and one of the grooves to detachably look the bracket to the hub.

9. In a pull socket, the combination with an insulated hub, a bracket comprising concavo-convex members having depending arms, an operating leverloosely pivoted between the arms leaving the members free to swing independently when detached, an

ahook and adapted to lie in the recess, an

operating bar adapted to engage the hook and to be inclosedby the members and means for detachably securing the bracket to the hub. y

In testimony whereof I affix my signature in presence of two witnesses.

HARVEY HUBBELL.

Witnesses:

S. W. ATHERTON,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of .Patents,

Washington, D. G."

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