US1102639A - Pull-switch socket. - Google Patents

Description

R. B. BENJAMIN.

PULL SWITCH SOCKET.

APPLIOATION FILED-Nov. a, 1910.

Patented July 7, 1914.

3 SHEETS-SHEET 1.

JWM

R.- B. BENJAlVI'IN.l PULL SWITCH SOCKET.

` APPLICATION FILED NOV. 3, 1910.

l102,639 l Patented July '7, 1914.

' I 3 SHEETS-SHEET 2.

R. B. BENJAMIN. PULL SWITCH SOCKET.

APPLICATION FILED NOV. 3, 1910.

1,102,639@ Patented July 7,1914

3 SHEETS-SHEET 8.

Wm MW To all whom it may concern EEUBEN B. BENJAMIN, or CHICAGO, ILLINOIS, AssIGNoE To BENJAMIN ELECTRIC f MANUFACTURING COMPANY, or CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS. f v

incassa.

,Be it known that I, REUBEN B. BENJAMIN,

I a citizen of the United States, residing at 'Chicago, in the county of Cook and State of; Illinois, have invented new and useful Im rovements in Pull-Switch Sockets, of which the following is a full, clear, concise, and vexact description, reference being had to the accompanying drawing, forming a part of this specification.

This invention relates to switch sockets for electric lamps, and parimprovements in ti'cularly to that type of switch' socket in y which the vswitch is opened or closed, to

extinguish or light the lamp, by pulling upon a chain, cord or the like. As sockets of fthis class are usually constructed, if a shade be used the operating chain or cord extends over the edge of the shade and from this point hangs down to where it can be reached by a person desiring to manipulate the switch. When the chain orcord is lum filament lamp, which as is well'known,

are not adapted to withstand rough usage.

It is one' of the objects of my invention to provide a device Iin which the possibility of the fixture being jarred or caused to oscillate is greatly reduced, so that the danger of the filament .of the lamp being 'destroyed is made much smaller than withlamp-holde ing devices as heretofore constructed. j 'y Another object of the invention is to o attach the shade' to the socket that if 't e .former be accidentally struck it "may ltilt to some extent, whereby the transmission of a destructive jar to the socket' andv the lamp carried thereby isprevented.

. In the accompanying drawings, which I`l have illustrated embodiments of my inven-A v FULL-SWITCH SOCKET.

Specification of Letters Patent. L 'i Application filed November 3, 1910. Serial No. 590,501.

4pulled upon, the fixture, because of the factI thatthe chain hangs from a point considertion, Figure 1 is a longitudinal sectional view of a socket carrying a shade and lamp,

this socket being provided with switch -mechanism operated by the means which I- have invented ;k Fig. 2 is a cross sectional view of the same on the line 2--2 of Fig. 1 looking upward; Fig. 3 is a cross sectional'yiew, ofthe Vsaine on the line 3--3 of Fig. 1 locking downward; Fig. 4 is a Patented .muy e, mia.

partial cross sectional view on the lihe 4 4 of Fig. l looking downward; Fig. 4 is a which I employ in the construction illustrated in Figs. 1 to 4 inclusive; Fig. 6 is a partial longitudinal sectional view -of a modified socket and shade employing some vof -the features of my invention Fig. 7 is a 'top plan view of this form of the device;

spective view of the upper end of a tape enter the feed wires. The lower end ofthe filament lamps, or may be made to receive any size shade desired. Suitable means, such as the screws 18, are employed for holding the shade in place in the shade holder. Athieaded ring 19 screws up into the lower teria-l, preferably porcelain. WithinV the ring-shaped member 21 is a threaded Ine-,-l

t-allic sleeve 22 adapted for the reception of' the base v23 of the lamp 24. This threadedl sleeve 22 is vprevented from dropping'out of the' ring 21I by having its upper edge 25 flanged over upon a suitable shoulder formed on the ring' 21, and is prevented from passing upward outy of the ring 21 byfy having its lower edge 26 flanged kout- 10o i' wardly beneath a shoulder, suitably f0rined`.

'of the size commonly employed withinetal,

asd

end of the casing `shell 10 and h-as its'upper ledge 20 flanged inwardly to support a ringjshaped member 21 formed of insulating maonthe rin 21. To prevent rotation of the sleeve 22 1n the ring 21 when the lamp 1s screwed in toor out of the sleeve a/l'ug Yor f projection 27 is yprovided on the porcelain 105 ring 21 which extends into a corresponding thesleevc. Resting upon the insulating ring notch in the outwardly flanged edge 25 of f 5 2. A center contact plate 29, for engagement with the center terminal of the lamp,

l is secured to the under side of the base28 by means of a screw 30, this screw also holding in place, in contact with the center contact member, a curved strip of spring metal 31, the free end of which extends over into the switch chamber 32. Rotatably mounted upon a shaftv 33, which is non-rotatably fixed in the chamber 32 and extends thereacross, .is a swit-ch -operat-ing starwheel 34. This member has six points4 or fingers, alternatefingers being made long enough to engage the resilient strip 31 and the other fingers being lslightly too short -to reach this strip. Fulcrumed loosely upon the shaft 33 is a lever 35,-a spring '36, which is coiled around the shaft 33 and secured thereto, tending to throw the free end of this'lever up. The lever 35 carries a spring tongue orA p-awl 37 which, when the lever is moved downward, engages one ofthe lingers of the star-wheel 34 whereby the latter is moved through one-sixth of a revolution upon each movement of the lever 35. A resilient strip 36n forms the other switch blade member and is arranged so that if permitted it will move into engagement with 'the free endV of the resilient .strip 31 and make electrical connection therewith. This strip is secured by means of a rivet- 37a to a conducting strip 38 which leads to a screw 39, the latter extending down* through the base tothe under side thereof and holding in place a binding plate 40 carrying a bind-l 'ing screw 41. ,A passage 42 extends through lthe base through which the feed Wire may extend to the binding screw 41. The spring strip 36a is long enough to be engaged by the short as vwell-as the long fingers of the star-wheel... A second passage 43 accommodates the other feed wire, which extends to a binding ,screw 44 carried by a, binding plate 45. This plate is held in position by a screw 46 which also holds in place a resilient conducting strip or plate 47 which is bent downward and engages with the outturned flange 25 on the threaded lampreceiving sleeve 22 when the insulating ring 21- is in position in the casing 10. It will be seen that when strips 31 and 36 of the switch mechanism are in contact with eachother thecircuit will be closed through the lamp, this circuitbeing traced as follows: from the lead wire which extends down through 60 vthe passage 42 to the binding screw 41,

r\`through,the binding plate 40 to the screw 39, thence through conducting plate 38 to "the strip 36a, thence through strip 31 to the center con-tact e29, thence through the Vlamp to the threaded",lamp-receiving sleeve .l 22 and plate`47 to terminal plate 45, thence to binding screw 44 and the feed wire which goes out through passage 43. The means for opening and closingthe circuit, by separating the plates 31 and 36 or permitting the same to come together, will now be more fully described. Secured to the outer end of the lever 35 is a thin, partly exible end of this ape in which the notched end ;of the lever 35 is hooked to retain the tape thereon. This tape extends down through a groove 50 formed inthe side of the porcelain ring 21 and emerges from the casing 10 of the socket between the lower 4edge of the ring 19 and the base of thelamp. As lampsr and shades are ordinarily lconstructed there is but littleavailable space between the base of the lamp and the neck of the shade, but lwhen a thin metallic'tape is used for the member which transmits the pull to the movable element of the switch this space is sufficient to accommodate the same. At the lower end of the tape 48, which 'terminates Y,

just below the neck of the shade, -a chain 51 ,is secured, this chain being ofany desired length and carrying at its lower end an acorn,

.ball or other suitable device 52 which maybe easily` grasped by the hand. Iny Fig. 1' the switch is shown with the parts in the posi- .tions which they will occupy just before the circuit closes, or in other words, with the -lever 35 moving downward and the strip 36B' zabout to be released. .When the end of this -strip slips off the short finger of the starwheel it will spring down into contact with the strip 31, thus closing the circuit and lighting the lamp. The chain being released the lever will be thrown upfby the spring 36,

the spring pawl 37 riding over the next ni gerof the star wheel and catching in the ynotch between the same and the succeeding finger.

If the chain be again pulleddown the pawl 37 engages the long finger and again moves `the star wheel through one sixth of a revolution.y During'the rst partv of this movement bot-h of the spring strips 31 and 36a are raised by a long finger of the star-wheel -but remain in contact with each other. Before the lever has reached ...the

limit of its downward travelthe spring 31 f quickly. During the. rest of the movement of the star-wheel on this pull the spring strip 36a is simply raised. Upon the next pull the strip- 36a is first dropped uponl the short finger, to the position shown in Fig.

1, and is then dropped upon the other strip las described above. The upper port-ion vof the chamber in the base which contains the switch mechanism is closed by an insulating disk 53 having a central opening for the passage of the feed wires. `Directly over this disk, and extending up into the cone-shaped neck 11 of the casing, is a cone shaped clamping ring 54 which is formed of insulating material and is split transversely. Springs tend to separate the parts of this ring,- but when the supporting ring 19 is screwed up into the lower end of the casing shell so as to force the insulating base of the device up into position the parts ofthe clamping ring 54 are forced together by the inclined walls of the tapering neck 11. The

upper portion of the clamping ring is formed, on the inside thereof, with a wedgeshaped rib 56'which, when the rino closes together upon t-he conductors, bites into the insulating covering thereof and firmly holds the wires against being pulled through the ring. In this way the binding terminals are relieved of strain.

It will be seen that the binding posts are located on the under side of the base which carries thevsame and the switch mechanism,

and are accessible throughv the front of the socket when the lamp, threaded ring 19 and insulating ring 21 are removed. There is therefore 'no necessity for providing any opening or'joint anywhere in the casing of the device, as is usual where the casing must be separated into two parts when accessis to be had to the binding posts. Itwill also be observed that there is no opening for the cooperating cord, `chain or tape to work through as is usual with devices of this class. The absence of such openings or joints renders the device more sightly and precludes the entrance of moisture when the device is used in exposed positions. The shadeholding ring 14.-,- by being arranged orv adapted t0 rest loosely upon the outturned edge 13 of the casing shell 10, instead ofv being rigidly secured thereto as is usual, permits the'shadc and holder to have a certain amount of angular or rocking movement with respect to the socket. If the shade be accidentally struck the shade and holder, by

'reason of this loose connection, are permitted to tip and any shock or jar which would be likely to shatter/thedelicate yfilament of the lamp is prevented `from` bein transmitted tothe filament. p v

In the form of the device shown in Figs. 6 to 9 inclusive, the insulating base 57 is held up in place in the casing 58 by means of a threaded ring 59 andis cha bered out in lits under side to accommodate the threaded ring or lamp-receiving sleeve 60. In the lupper portion of the casing is arranged switch mechanism of 'I any suitable type which is adapted to be operated by means of a cord. or chain.

Y This .mechanism is not illustrated in detail as any of the well known forms of puILOperated'sWitches now in use downward and through which extends an operating chain 64. In this instance the chain does not pass down within the body of thecasing of the socket but is led down through the tubular member 63 and thus made to emerge within the shade 65. flhe shade-holder 66 is provided with an opening through which lthe tubular member 63 extends, the shade-holder being in thisvcase rigidly secured to the casing 58. In this form of the device, as in the vfirstdescribed form, the operating chainextends through the shade, but in this modification a special form of shade is provided', having a groove -67 formed on the inside fof fthe neck thereof. This groove is necessary because of the fact that the chain comes down through the shade at a considerable distance from the center thereof. lin this form of the4 device, as in the other formt' the insulating base and parts carried thereby are inserted into the casing from the lower end of the threaded ring attached to the casing.

rlhe socket shown in Figs. 6-9 is intended to be secured to ay conduit or the like, instead of being supported ,from the conductors, as is the casein the construction shown in Figs. 1 -5. The means for supporting the socket consists of a bushing 68 (Figs. 6 and 7) formed, at its lower `end with a flange 68,y

and having secured thereto, :beneath the in place by means of a turned-over neck 69 with which the lower end of the bushing 68 Y 9o' latter and are held up invplaceftherein by a rest upon the edgef-of the ring 0. rlhe cas- -v ing 58\is secured to theb ushing 68 by means of a stepped ring 72, secured tothe ring 7 0 by means of screws 71. llt will be seen that when the screws 71. are tightened, the casing rim 58a is clamped between the rings 70 and 71, and the casing is. thusirmlysecured to the bushing 68. If, for any reason, it is desired to change the angular -position of the casing with respect to the bushing, this may f be accomplished by loosening 'the screws 71 and turning the casing with respect to the bushing until it reaches the required position, whereupon the screws 71 are ,again tightened to clamp thecasing in the new position. By this means, it 1s; possible to locate the switch operating member 64 in any desired angular position, regardless of the position ofthe bushing 68 when the latter 1s securedto theconduit.

' What ll claim as new, and desire to secure by Letters Patent, is: f

1. ln combination, a lamp socket, a shade loo flange 68a a ring 70, the ring 70 being-I held 'v carried thereby, a switch associated with said socket, and a switch-operating member connected with said switch and passing through the upper part of said shade to a position between the shade and the lamp, whereby vibration of the socket, due to pressure by the switch-operating member on the outer part of the shade, is avoided.'

2. In combination, a lamp socket, a shade carried thereby,y a pull-operated switch mounted in said socket, an operating member connected at its upper end with said switch, and means for guiding said operating member past the mouth of saidshade so that said operating member is disposed between said shade and the lamp carried by the socket, whereby vibrationof the socket, duex to pressure of the switch-operating member on the outer part of the shade, is avoided.

3. A switch lamp socket comprising an insulating base, lamp Pcontacts associated with said base, a pull-operated switch carried by said base, a casing surrounding said base, lamp contacts, and swltch, and an operating member for said switch disposed between said lamp contacts and the casing. for the purposes set forth.

4. A swi/tch lamp socket comprising an insulating base, lamp contacts carried by said base, a'pu11-operated switch associated with said contacts, ra casing surrounding said base and switch and a switch operating member connected to said switch and extending downward and out through the end of said casing, said member being disposed betweenJ said base and the casing.

5. In'combination, a pair4 of lamp contacts,a support therefor,aswitch associated with said contacts, a casing surrounding said support and Said switch, 1 and having an opening through which a lamp may be inserted to make connection with said contacts, and an operating member for said switch,

` said operating member being partly inclosed ,in said casing and extending outward through the opening of said casing.

6'. A switch lamp socket comprising an insulating base, lamp contacts carried by said base, a pull-operated switch associated with said contacts, a casing surrounding said base, lamp contacts, and switch, and a Hat strip connected to said switch to operate the same, said strip being disposed between said lamp contacts and the casing, for the purposes -se-t forth.

7. A switch lamp socket comprising a center-lamp-terminal engaging Contact, a threaded outer-lamp-terminal engaging lcontact, means for supporting said contacts, a pull-operated switch associated with said contacts, a casing surrounding said contacts, supporting means and switch, and an operating member for said switch, said operating member being connected with said switch .and passing through the space between said threaded contact and said casing to emerge at the opening of said casing, said operating member being of small thickness in order to permit it t0 pass through Said space, for the purposes set forth.

In witness whereof, I have hereunto subscribed my name in the presence of two witnesses.

E. R. KING, MABEL REYNOLDS.

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