US965734A - Pull-socket. - Google Patents

Description

Patented July 26, 1910.

1 rwerz his man

HENRY T. PAISTE, OF PHILADELPHIA, PENNSYLVANIA.

PULL-SOCKET.

Specification of Letters Patent. Patented July 26, 1910.

Application filed December 22, 1908; Serial No. 466,799.

To all whom it may concern.

Be it known that I, HENRY T. PAISTE, a

' citizen of the United States, residing in Philadel hia, Pennsylvania, have invented certain lhiprovements' in Pull- Sockets, of which the following is a specification. 7

One object of my invention is to so arrange and construct the parts of a lamp socket and of the, switch contained therein and forming part thereof, that the device as a whole shall be of a relatively uncomplicated nature and not likely to get out of order or to require repairs.

I further desire to provide a special form of quick break'electric switch for use as part of a pull socket, which, while being compact, shall be positive and reliable in action as well as of such a construction as to occupy but relatively little space.

These objects and other advantageous ends I secure as hereinafter set forth, reference beingl had to the accompanying drawings, in whic Figure 1, is a side elevation of a pull socket constructed according to my invention; Fig. 2, is a vertical section of the socket shown in Fig. 1; Fig. 3, is a vertical section taken on the line 33, Fig. 2; Fig. 4, is a side elevation of the body of the socket, the shell being removed; Figs. 5 and 6, are vertical sections on the lines 5-5, and 6'6, Fig. 4; Fig. 7, is a perspective view of the switch employed as part of the socket; and Figs. 8 to 12 inclusive are respective views of certain of the details of my invention.

In the above drawings A represents the casing of the socket which consists of a body portion a and a capo fitting together and held in the positions shown by the screws, of which one is illustrated at 0?.

The interior of the body portion of the casing is lined with insulating material a and contains two blocks B and B of porcelain or other suitable noncon .lucting ina tcrial, held together by screws 6 and b, of

' ,which the threaded end of the first engages a metallic plate 6 whereby the Well-known threaded shell B for the rece tion of a ,lamp, is held to the 'blockB';

the second of these screws enters a threaded opening in a terminal plate I) the. end of which extends down one side of the block B and is rovided with a screw 6 for the attachment of an electrical conductor; said screw serving to hold said terminal plate in no end of good electrical contact with the metal of the threaded shell B As is understood by those skilled in the art, the shellB 'constitutes one of the socket terminals for engagement with the threaded base of an incandescent lamp, while a late C, preferably ofgthe form shown in Fig. 9, is held to the block 13' by a screw 0, so that it: extends from a central point at the bottomof the shell B to one side of said block, and is then turned at right angles to form the contact head 0 of the switch. The second terminal of the switch is provided by a plate D held to the block B by a screw d and projecting toward the head 0 of the plate C at one side ofsaid block.

A spindle d (which also serves as a ter minal for the connection of a second electrical conductor) is threaded immediately adjacent to its head so as to be rigidly held by the late D, and extends transversely of the soc -et so that it lies'in or immediately adjaceht to the plane of junction of the two blocks B and B, its opposite end bein journaled in a metallic nut (Z rigidly-he ald between said blocks. Loosel mounted on this spindle 11'" is an elongate sleeve E having a central squared portion on which is a ratchet wheel 6 of (on-conducting material. On each side of this ratchet wheel are loosely mounted two plates 6', also of non-conducting material, and rigidly connected by a pin c" carrying a pawl e which is dcsi ed to engage the teeth of said Wheel a. ThlS pawl has connected to it a chain c, which extends from the recess within bloc tsB and B in which the above noted pails are mounted, through an outwardly flanged funnel shaped mouth piece (1 attached 16 the shell.

The sleeve E has at its outer end a collar 0 and carries justaiindei' said collar a metal- 'liowasher e which ipsts upon the bottom of head and the collar is mounted a substantially circular contact member F, which, being fitted tothe squared portion of the sleeve, necessarily has to turn therewith. From Fig. 11 it will be noted that this memher is provided with two upwardly projecting. tongues f 180 distant from ea h other, and since it is made of spring me a1, said tongues while being free to be ressed toward or'into the plane of its main portion,

tendto" occupy the positions shown, lmmediately under the head 0' of the plate C and 'minimum. Moreover owing to the peculiar also the body of the plate I) as well as in a projected position between said parts. 'Said tongues are so proportioned or bent that their upturned ends bear against the under faces of the plate I) and the head a, when the contact member F is in certain definite positions. It will be noted, however, that said plate I) is cut away at one side, and that the ratchet wheel 0 is provided in the pres ent instance with four teeth. Moreover, there is mounted upon the spindle d between the nut and one of the plates 6 a spiral spring (1 whose ends are respectively fixed to said plate and nut.' Under operating conditions the spiral spring d maintains the two plates 0' with their pawl e in such a position that a certain length of the chain 6* is drawn into the socket and rests upon the surface of the ratchet wheel 0.

Assuming that one of the tongues f is in engagement with the under side of the plate I) and the other is in contact with the under side of the head 0; the outward pull of the chain c causes the pawl to engage one of the Four teeth of the ratchet 'wheel 0 and turn said wheel through an arc of 90, thereafter permitting the spring (1 to return the two plates 0 with the pawl, to their normal positions, shown in Fig. 2. This quarter turn of the ratchet wheel causes turning of the sleeve E and with it the contact plate F, so that while one of the spring tongues still remains in engagement with the under side of the plate 1), the other passes out fron1- under the head 0 and projects upwardly out of contact with the same, as shown in Fig. 4. The circuit through the plate D and the head (r' to the center of the lamp socket isthus broken, although another outward movement of the chain cwill cause the second one of the spring tongues 'to pass from under said plate I) and permit it to spring up into engagement withth head 0, so that the circuitabove noted is again completed.

By the arrangement above described, it will be seen that the wiping engagement of the spring tongues on the contact .plate F with the plate D and the head (1' insures at all times good electrical connection between these parts while the arrangement of said parts is such that the likelihood of loosening or breakage to any of them is reduced to a construction and arrangement of the tom ucs f and their cooperating parts the circuit is rapidly broken and made thus avoiding in a great measure all damage from burning of these parts.

l claim:

1. The combination in-a pull socket of a supporting structure having a transversely extending spindle; a ratchet wheel thereon; a pawl having operating means and placed to act on said wheel; a disk like structure attached to the ratchet wheel upon the outside face of the supporting structure, and having a projecting contact; with a fixed con tact or contacts extending adjacent said disk like structure also on the outside face of the supporting structure so as to be alternately engaged by and disengaged from the contact thereof when the pawl is operated.

2. The combination of a pull socket having terminals for connection to a lamp; terminals for the attachment of conductors; means for permanently connectr-g one of the conductor terminals with no of the lamp terminals; a ratchet wheel; a pawl having actuating means operative on said wheel; and a movable contact member con nected to the ratchet wheel and provided with a projecting spring contact capablej'of being rotated from the ratchet wheel to alternately make and break the circuit between the second conductor terminal and the second lamp terminal.

3. The combination in a switch of a lamp terminal and a. conductor terminal; a spindle electrically connected to one of said terminals; a. sleeve rotatably mounted on said spindle; a ratchet. wheel and spring contact member both fixed to said sleeve; a pawl having operating means and mounted so as to be capable of engaging the ratchet wheel; said spring contact being placed to alternately engage and disengage the second of said terminals when the sleeve is turned.

4. A pull socket consisting of two bodies of insulating material, having a chamber within them and provided with bearings; a spindle mounted in said bearings between said pieces of material; a pawl and ratchet mounted upon the spindle within the chamber but rotatable independently thereof; a spring contact tongue rotatably mounted on the spindle and operatively connected to the ratchet; lamp terminals of which one overhangs the path of movement of the contact; means for connecting current conductors to the spindle and to the other lamp terminal; and means for actuating the pawl.

5. The combination in a pull socket of an insulating body having a recess in one side and an interior chamber; a spind e extending through said chamber into the. recess; a ratchet wheel of insulating material mounted on the spindle within the chamber; a pawl'also in the chamber and operative on the ratchet; a disk on the spindle operatively connectet l to the ratchet, and having a spring tongue protecting from its plane; and lamp terminals mounted on the insulating body in such positions that one of them overhangs the rece. 5 tl reof; with means for actuating the pa l to cause the spring tongue to be intermittently drawn into engagement with said overhanging contact and disengaged therefrom.

(i. The combination in a pull socket; of an insulating body having a recess in one side seem thereof; e 'piate a'mi a contaet overhanging .said recess; said contaethavmg a lamp teriminal eonnected'to it; a'second lamp tel"- minal; a conductor-terminal connected to the zseeond hunp terminal; with means for 'con- 1' of alternately engaging the plate and the qverhanging'contaet; with meane for intermittentlyroentgaid stzn'ctu re in there;

cess,

name to this specification, in the presence-of two subscribing witnesses.

Witnessesz,"

- WILLIA BRADLEY,-

WM. A; BARB.-

In testimony ivhereo f, I I have flsignedim y.

" I JPAISTE'Q

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