US1001330A - Electrical pull-socket. - Google Patents

Description

D. P. WOLHA UPTER.

ELECTRICAL PULL SOCKET.

APPLICATION FILED JAN. 28. 1911 1,001,330, Patented Aug. 22, 1911.

2 snsms-s1mm 1.

WITNESSES N [NVENTOR D. P. WOLHAUPTER.

ELECTRICAL PULL SOCKET.

APPLIOATION FILED JAN.Z8. 1911v 1,601,330, Patented Aug. 22,1911.

2 SHIJIITS'SHEET Z.

DAVID P. VV'OLHAUPTER, OF vVASI-IIIN'GTON, DISTRIC'I. OF COLUMBIA.

ELECTRICAL PULL-SOCKET.

Ill ,ti'tlil 33G Specification of Letters Patent.

tt 'atented Aug. 22, 191i.

AppIication filed January 28, 1911. Serial No. 305,209.-

To all whom it may concern:

Be it known that; it, Damn P, Wommue- (run, a citizen 0:1 lil e liillil'ttt States residing at Washington ijtistriet o't tilolumhia, have invented certain new and useful limprovements in Eleetrieal PulhSoekets, ol. whieh the :t'ollowing a speeitieation.

This invention relates to eleetrieal pull soelzets oi that type wherein a pull ehain or equivalent ttexihle pull connection is employed for operating the soelret. switeh to make and break the eleetrieal eireuit through the iiu-andesr-ent lamp.

To this end the present invention eon templates eertain novel and praetic-al improvements which greatly simplify the eon z-atruetiou and manufacture ol eleetrieal pull sockets. ionthe numher o'l' operating parts and the arse and certainty with which sueh parts may be readily assemhled and also disassembled.

A t ljirther ohjeet ot' the invention is to provide an improved eonstruetion oi pull soeltet which entirely dispenses with the ratehet eon'nnutator so eonu-uonly employed and which eomn'iutator involves the idea ot ratchet 'iueiines either on the praeelain ol the soeltet hotly or on a rotating memlien said int-lines alternately presenting metal ('ontaet tat-es and insulating taees that proride for the make and hrealt ot the eireuit. in place thereof, the present invention proposes to utilize a plain metal switeh ot a simple type but pret'e "ably having a snapping action to seeure a quirk-break 'ol' the eireuit, in eomhination with a simple form of ratchet operating lneelmnism, and an insulator between the two, whieh insulator is not only utilized to transmit motion to the switeh parts, out also aets as a eomplete in sulatingeoveri'or the switch so as to pro- Vide a soelcet wherein there may he said to be a perfect insulation for the parts of opposite polarity so that there is no danger ot short eireuiting t'rom stray ends oil. wires at the wire tern'iinals or from other *auses. liesides, this idea of insulation, as claimed herein, admits o'ti (lireet metallic eonneetion between the pull ehain and the pull lever ol' the operating meehanism.

T do not eontiue myself, in earryiirg out the ahore ohjeets. lo the preeise details o'l" construetion oi? the Various parts of the socket, hut: preterrei l and praetieal en'ihodi partieularly with respeet to redueuu-uts thereof a re shown in the arreompanv ring drawings, in whieh---- ltieure l is a longitudinal sectional view 0.1 a pull soeket emhot lying the present. in vention. Fin". 9 is a cross sectional view on the line of Fig. 1. Fig. a similar View on the line 3-----3 o't Fig. 1, and illustratingthe switeh closed, on one-quarter turn of the switeh bloelt. Fin. 1- is a view similar to Fig. ishowing the other quarter turn of the hloelg wherein the circuit is opened by a quiek break. Fig. 5 is a seetional view showing a moditieation in the switeh. l ig'. S is a seetional View on the line ti -t3 ot Fig. showing the switeh open. Fig. i' a perspeetive View showing the simple manner of assemhling the switch operating meehanism with the rotating, switch hloeh and the interposed insulator, the View illustrating the several parts in separated relation.

liilce rel'erenees designate eorresponding parts in the several figures at the drawings. A pull sot-hot, constructed in aeeordanee with the present inventiom ineludes in its organization the usual external socket easing t. the interior insulating soeket hotly, the soehet switeln and the switeh operatingmerhanism. The partieular ermstrlu-tion oi the sot-hot insulating hody is unimpm'tant; evept as to the provision for housing the srviteh and insulating it from the operatii'lg merhanism and the wire terminals. llenee, for illustrative purposes there is shown the eoui'enlioual l'orm ot soeltet hotly consisting ot two suitahly eonneeted hloeks A and i3 ol porc-elain or eipiivalent insulating material. 'lhe soehet switeh may he eonveniently lorated within a housing chamber 1 Ittftwfittl into the inner side oi. one of the insulating" hloelts which may he the lower hloelc 15 shown in the drawings, and as ahove indicated is intended to he completely insu lated from its operating mechanism and from the terminal plates to which the wire ends are eonneetod.

'lhe switeh proper which is preferably a1'- ranged as stated, may consist of any simple type of all metal snap switeh as distinguished from a switeh ot the ratehet eommutatior type, but lfor purposes ol. illustration, there is shown in the drawings, in one ltlllifitllIiWlli. a quirk-break snap switeh eonsistin q' iii a s n-int: eonl'aet' plate 9, and a 1'0- tary eontaet member 3, the latter being: in

v the invention being described, acting as a 10 acts as a detent therefor while the ratchet 1 plate takes up the movement and quickly snaps lid electrical and metallic connection with one spring pressed snapper plate 10, held under block3." Any suitable separable connection a r ,M Q 1,0 1),

the form of an oblong switch bloc; sin'iilar to the corresponding block employed in the well known key sockets now on the market, The said switch block 3 is intended to be loosely mounted upon center supporting spindle 4 extending centrally through the blocks of the socket body and, in the form of center conducting screw which holds in place the center plug contact 5 arranged at the under side of the lower block l3, Hence, in this form the spindle 4: acts as a conductor so that current passes through the same and the rotary member or switch block 3. When the latter is in contact with the spring'contact plate 2, the switch parts, are placed in of the wire terminal plates 6 which may be used as a uniting plate between the two insulating blocks, while the other wire terminal plate 7 performs a similar office and furthermore has a direct metallic screw connection 8 with the screw shell contact 9, all of which plainly appears in Fig. 1 of the drawings.

The snapping action of the loose member or switch block 3 is efiected by means of the influence of the press spring 10 against the switch block 3 at all times,and the pressure of this plate is exerted in line with the center of the axis for the switch block so that at each quarter turn of the block the element operating mechanism is resuming a fresh starting position, as will be well understood by those skilled in the art. At the same time, as the ends of the block 3 commence to pass off of the plates 2 and 10, the latter the block around to the position shown in Fig. 4:, thus securing the quickbreak. I

The operating mechanism for the switch consists of a rotating ratchet member or disk 11, an, oscillating ratchet member or pull lever 12, and a pull chain 13. The ratchet member 11 may consist of a disk in ring form having punched out or equivalent ratchet shoulders 1d, and punched out or equivalent holding elements 15, the latter being separably interlocked in sockets or depressions 16 in the insulator 17 that is interposed between the switch parts and the said. operating mechanism. This insulator may conveniently consist of a disk of insulating material which is mounted to turn freely on the spindle 4t and carries with it the switch may be rovided between the switch block and the insulator, such for instance as bolding projections 19 on the switch block separab y interlocking in sockets or depressions 20 provided in the insulator 17.

The insulator or insulating disk 17, in the 1 form being described, is provided with an insulating hub 21 which extends through the operating mechanism and effectually insulates all metal parts from the center supporting spindle d. Furthermore, the said insulator is arranged so as to wholly cover the housing chamber 1 and the switch therein, besides'being so located as to constitute an effective separator between all opposite polarity parts.

' The ratchet elements or shoulders 14 of the ratchet member 11 are adapted to be'engaged successively by the pawl or equivalent ratchet element 22 of the ratchet part of the pull lever 12, and the latter is also'provided with a chain holder or clip 23 to which is directly connected the metallic pull chain 13 that is guided to the exterior of the casing through the usual chain guide 24.

The pull lever '12 is normally retracted under the impulse of a retracting spring 25, one end of which as at 26, engages with the pull lever or its ratchet part," and the other end of which spring is engaged in anyone of a series of holes or equivalent keepers 27 provided in a tension washer v28 This washer is of an angular form and is loosely seated in. correspondingly shaped seat 29 "look A. The tension ofthe spring 25 may increased or diminished as desired by aging the position of one end A proper keeper 27 of the. washer fig the latter oneway or the other, to atent desired, and then dropping it back into its seat 29 in which it'is held interlocked with the angular faces of.

the latter. ffhe extent of movement of the pull lever in both directions may be defi n tely' determined by the simple use of a stop gaging in a lnnlting slot 31 provided in the u lever member.

A modification or the invention is sug r gested in Figs. 5 and 6 of the drawings,

wherein the switch proper is shown as con-i sisting or the snapper plate 10 and a spring contact plate 2 the latter being adapted to be engaged and disengaged by the snapper plate to close and open the circuit, and the switch block 3'" being an integral or rigid part of the insulator-17. In this form. of

the invention the insulator does not require the hub 21, as the center plug contact of the socket has a direct metallic connection with one of the wire terminal plates X, While, as shown, the switch 2 and 10 is included in the opposite side of'the circuit with the other wire terminal plate. 7 and with the screw shell contact 9. In other respects, the modification described possesses all of the desirable teatrres hereinbefore specified.

rovided in the under side of the insulating 30 mounted in the socket body and enor other convenient part of the pull in the operation of the socket, it will be 1 oflice as hereinbefore referred to. Mention has already been made of the successive quarter turns, ot the switch block to first open and then close the circuit, and with the snapper plate 9 acting as a detent, the parts ll; 17 and '3 are held stationary while the pull lever 12'is retracted through its idle movement by the spring On i ts forward movement the pull lever 12 moves through a quarter circle, determined by the stop 30-31, and in such inoven'ient engages the ratchet elements 14 to rotate the member I t and the parts connected therewith. During the forward movement of the pull lever when the snapping action of the switch block takes Jlace, the parts 3, 17 and 11 simply snap ahead oil. the pull lever till brought to a stop by the switch block reaching the position shown in Fig. 4.

I claim:

1. A pull socket comprising a chambered body, a switch arranged within the chamber of the body, metallic operating means ineluding a pull chain, and an insulator interposed between the operating means and switch and arranged to cover the latter in its chamber.-

2. A pull socket comprising an insulating body, a stationary center spindle fitted in the body, a snap switch seated within the body and including a rectangular switch block loosely mounted on the spindle and freely rotatable about the same, snapping means for the switch block, metallic operating means for turning the switch block independent of the spindle on which it is supported, and insulatii'ig means for the me- .t allic operating means.

A pull socket. comprising a chambered insulating body, a stationary center spindle titted within the body, a snap switch seated within the chamber of the body and including a rectangular switch block and snapping means therefor, said switch block being loosely mounted on the spindle and freely rolatalilc on and about the same, and op-- erating means for the switch including a pull chain.

i. A pull socket comprising a chambered bot 1y, a snap-switch. seated within the chamher of the body and including a rotary reetangular switch block and snapping means tht-rcl'or, metallic operating means including a. pull chain, and an insulator arranged as a cover for the switch and interposed between the latter and the operating means.

ii. A pull socket comprising a chambered body, a snap switch seated in the chamber of the body and including a rotary reetangular switch block and snapping means there- 'lor, an insulator arranged at one side of the switch block and connected therewith, said insulator acting as a switch cover and having a hub, and metallic operating means pirotally hung upon said hub.

.ln testimony whereof I hereunto atlix my signature in the presence of two witnesses.

DAVID l. WOLl lAUltllG 1t.

\Vitncsses:

R. G. BRADDOCK, A. M. Pamuns.

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