US1821030A - Pull switch candelabrum socket - Google Patents

Description

Sept. 1, 1931. c. M. PETERSEN PULL SWITCH CANDELABRUM SOCKET Filed April 20, 1928 2 Sheets-Sheet 1 W/rA/EssEs Z21: Petersen,

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P 3 c. M. PETERSEN 1,821,030

PULL SWITCH CANDELABRUM SOCKET Filed April 20, 1928 2 Sheets-Sheet 2 Qwwnfoz I C'arZMPeier-sen, 4

' 35 ings and set forth in the Patented Sept. l, 1931 'YUNITED TATES PATENT OFFICE cam. -1=ETEEsEN,'oE TaENroN, NEW JERSEY, ASSIGNOR r CIRCLE E 1 'TRENTCN, NEW JERSEY, a CORPORATION OF NEW JERSEY I MFG. (30., OF

ZPULL SWITCH CAN'DELABRUM SOCKET Application filed April 20, 1928. Serial No. 271,513.

. This invention relates to a novel structure for candelabrum sockets of the pull switch type and has for its primary object a facile assembly of parts which simplifies 1. and cheapens the manufacture of the article and involves novel structural features of practical importance in the art. The improvements contemplated are especially designed for use in a screwless-type structure wherein the entire assembly may be made without the use of any screws or separate fastening devices, and all of the pull switch mechanism may also be mounted without the use of screws as fastening means and carried as an entirety by oneof the sections of the insulating socket body so that in the act of assembling the parts the movement of the insulating. body'section causes the body and screw shell to come into direct interlocking an engagement and the entire switch becomes housed within the socket body in its operative position. V T

Another object of the invention is to'provide for a convenient and selective position i of the pull chainso that it may be guided in any of several positions according to the situation met in the house or building where the socket is installed. I y

' 'With these and other objects in view which will more readily appear to those familiar withthe art as the inventionisbetter understoodin detail, thesame consists in the novel construction, combination and arrangement of. parts shown inthe accompanying drawiollo'wing description and claims. g V The essential features of the invention necessarily are susceptible of 'modification without departing fromthe spirit or scope 40 of the invention. but aipreferred and practical embodiment thereof are shown in the accompanying drawings, wherein: .Figure 1 is a side elevation of a pul switch candelabrum socket constructed in aceordance with the present invention.

,Figure 2 is another elevation from a different side ofthe socket from that shown in i Figure 3-is a sectional view of the socket on the line 33 of Fig; 1.

Figure 4 is a sectional view of the socket on the line 44 of Fig. 2.

F igurefi is an inside face view of one of the sections of the socket body with theswitch assembly removed from said block and exposing the fixed spring contacts. 7

Figure 6 is an end view of the socket body with the screw shell contact removed.

Figure 7 is an end view of the screw shell contact exposing the locking hole therein.

Figure 8 is a detail view illustrating the relative arrangement of the parts to provide the locking together of the socket body and the screw shell in the act of assembling these parts.

Figure 9 is a sectional elevation of a complete candelabrum fixture showing one of the preferred applications of the invention.

The novel candelabrum socket, representing the present invention includes in its general Organization a socket body B of porcelain or' other insulated material, a screw 7 gated form to adapt it for a. candelabrum socket and except for the recessing to provide for the housing of the switch mechanism S and the seating a few detail elements, is of a solid formation so as to give stability and strength to the entire structure, and asindicated, the same is of a separabletwopart construction, the separate sections 22 thereof having inner flat faces 3- 3 which solidly abut when the said sections are assembled and in matching relation. As more clearly shown-in Fig 3 of the drawings the sameend of the socket body B each section thereof is provided with an under-cut catch hook 44 in registering relation with the similar catch hook of the other section in order to provide a divided two-part rectangular lock lug L. This lock lug is adapted to project through and interlock with the rectangular locking hole 5 cut into the base or bottom 6 of the screw shell contact C.

drawings; insertingthe catch hooks 4-4 as thus brought to. closer relation through the locking hole 5 of the screw shell contact, and

' thenmoving the body sections into the solid abutting Contact as shownin Fig. 3. This results in bringing the under-cut portions of the catch hooks 4-4 over opposite edges of the hole 5, thereby securely locking the parts togetherso that the screw shell contact cannot be removed from the socket body without reversing the operation just described. To

retain the two sectionsof the base block in thisfinal relation a suitable retaining means is employed, such for instance as the re tamer member R consist ng of a one-piece yoke orbrackethaving the opposite side arms 77 and a connecting end member '8, the latter member having the attachingopening 9 facilitating the attachment of the socket to the house fixture. The said side arms 7-7 of the retainer or retaining member. B have their ends seated in the recessed seats 10jinthe opposite body sections 2-2 at one end thereof, and such ends of said sidearms are connected'b'y a through i screw llpassing through the alined screw opening's12in the said body sections.

A cha racteristic improvement provided by thepresent invention is that of mounting the entire switch mechanism on one of the body sections 2 so that such switch mechanism is "supportedand held in operative relation'by such section and not disturbed in such relation bythe movement of the two body sections either in the locking or unlocking operation with the screw shell contact. This switch mechanism pret'e'rablyin- V cludes a ratchetjtype rotor r mounted on a.

switch axle 13, wh0se ends extend into the i axle openings 14: and 15 respectivelyin the opposite bodysections2- 2, the smaller hole 15 being in the body section which carries the whole switch assembly and at theouter side of which hole the said'body section is countersunk as at 16' to accommodate the flattened holding'head 17"of the said axle 13. This flattened holdinghead'l! is adapted to be seated, when turned in a position at right angles to that shownin Fig. 1 of the drawings, in the locking seats 1818provided in the bottom of the countersink 16: and when turned to the positionshown in Fig. 1 in line with the longitudinal axis of the socket will permit a ready attachment of the whole switch assembly;

The rotor? is of the ratchet type including the usual tensioning spring 19 on the axle at one side thereof and carrying at its opposite side the double switch arm 19 adapted to have a ratchet engagement with the oppositely disposed fixed switch- contacts 20 and 21, both of which fixed contacts are preferably fastened to the same body block 2 by eyelet or equivalent tixed fastening elements 22 thereby dispensing with the use of screws at these points.

The fixed switch contact 20 isconnected directlyby its eyelet fastening 22 with the outside binding terminal 23 seated in a terminal recess 24 in the outside of one of the body sections 2 and carrying the usual binding screw 25. The other 'fixed' switch contact 21 which is fastened to the said body section 2 is preferably held by its eyelet fastening 22 to the inside arm 26 ofthe center plug fastening 27 consisting of a single bent plate or strip held within'the holding groove 28 formed in the upper end of one'of the body sections 2 and having one end enlarged and exposed within the screw shell to form the actual center plug contact. The electrical circuit is completed by the second binding terminal 29 soldered or otherwise rigidly fastened at one end as at 30 to the screw shell contact and carrying at its other end the binding-terminal 31 set withinthe terminal recess 82 at one side of the body.

The switch mechanism includes as the operating elcmentthereof the usual pull chain 83 connecting at one end with the rotor 1% of tliehoused switch assembly and its free running' portioirbeing adapted for guidance at either side of the rounded division lug 34 of a divide formationa part therof on each of the body sections 22 so that when the said sections are matched a chain guiding opening 35'is formed at the inner side of the said lug and a chain guiding groove 36 is formed at the outer side ofthe said lug. By reason ofthis construction the pull chain 33 may be directed in either of several directions as indicated by the full and dotted lines in Fig, 4: of the drawings according to the position and requirements; for the socket in any'particular location.

In one of the preferred applications of the invention, shown inFig. 9 of the drawings, the practical utility of the retainer and attachment member is emphasized. This member is preferably, as shown, in the form of a bracket or yoke'and it provides a combined means for holding the two porcelain parts of the socket'together, and also as an attachment .or mounting means for mounting and supporting the deviceitself. Referring'to the illustration of Fig. 9 showing this dual function of thememberR it will be seen from that figure that the entire pull switch socket is intended to be entirely housed within the candle-shell 37'suitably carriedby the fixture or wall plate 38 and in this fparti'cular application be provided with a bottom rounded end portion 39 upon which threaded opening!) in the cross-piece of the bracket or yoke R and passing through and engaging a perforated and shouldered clamping cap 41, the said cap 41 and the candle-shell 37 being of porcelain or other insulating material. With this construction the chain 33 operates directly through the hollow screw 40 in line with the longitudinal axial center of the device. The chain is provided at its lower end with the usual pull knob 42 of a suitable form.

From the foregoingit is thought that the construction, action and advantages of the invention as herein described, will be readily understood without further description and it will also be understoodthat changes in the form within the scope of theinvention will be resorted to without departing from the invention. 7

1. A pull switch candelabrum socket, including a separable two-part body, a screw shell having a direct interlocking engagement with the two sections of the body at one end, a combined fixture attaching bracket and'body section holding means engaged with the sections of the body at the opposite end, and a switch carried by the body.

2. In a pull switch candelabrum socket, a separable two-part socket body, a screw shell contact directly interlocking with the body by the act of assembling the body therewith, a combined attaching bracket and retaining device holding the body sections together, and a pull switch mechanism carried by one of the body sections.

3. A pull switch candelabrum socket, including in its organization a separable twopart socket body made of insulating material, said body being recessed and provided at one end with a division lug forming a chain guiding opening and chain guiding groove respectively at opposite sides thereof and communicating with a recess of the body, and a pull switch mechanism housed within the body and including a rotor and a pull chain adapted to be directed through either the said chain guiding opening or through the said chain guiding groove.

4. In a pull switch candelabrum socket, a separable two-part body socket, a screw shell contact directly interlocked with the body by the act of assembling the body therewith, a combined attaching bracket and retaining device holding the body sections together at one end and a pull switch mech anism carried solely by one of the body sections.

In testimony whereof I hereunto afiix my signature.

CARL M. PETERSEN.

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