US840537A

US840537A - Switchboard.

Info

Publication number: US840537A
Application number: US28095305A
Authority: US
Inventors: Welby D Weir
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-10-02
Filing date: 1905-10-02
Publication date: 1907-01-08
Anticipated expiration: 1924-01-08

Description

yIAT}E`.1\I'FED JAN. 8, 1907.

W. D. WEIR. SWITGHBOARD.

APPLICATION FILED 00T. 2, 1905.

I l J Attorneys` WELBY D. WEIR, 0E WINNSBoRo, TEXAS.

swlTcHBoAnD.

Speccation of Letters Patent.

lPatented/Jan. 8, 1907.

AApplication filed October 2, 1905. Serial No. 280,953.

T 0 JZ jzvlwnt it 'nt/ty sonnent:

Be it known that I, WELBY D. WEIR, a citizen of the United States, residing at VVinnsboro, in the county of Woodand State of Texas, have invented a new and useful Switchboard, of which the following is a specification.

This invention relates 'to switchboards for use in telephone-exchanges and electrical plants, and has for its principal object to provide a board of simple and economical construction and of such nature that any wire may be instantly connected to any other Wire in order to complete a circuit between the line and Ijack wires of a telephone central station'or for the purpose of completing circuits of any description.

A furthery object of the invention is to provide aboard in which-all short circuitsmay be prevented and in which the parts are of suc nature as to permit ready construction and asseinblement at minimum expense.

A still further object of the invention is to rovide a switchboard having rings or simiarsocket members of such construction as to retain the circuit-closing plug in position and to Jinsure good rubbing contact with the plug, so that the parts shall be bright and clean and certain,

A still further object of the invention is to provide a novel form of lug for use in connection with switchboar s of thistype.

Withthese and `other objects in view, as will more fully hereinafter a pear, the invention consists 1n certain nove Afeatures of construction andjarrangement of parts, hereinafter fully described, illustra-tedin the accompanying drawings, and .particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, size, and minor details of. the

structure may be made without departing from thespirit or sacrificing any .of the advantages o the invention.

In the accompanyin drawings, Figure 1 is an elevation of a switc board constructed in accordance with the invention. Fig. 2 isa .vertical section of the same, showing a con- SO` necting-plug in place. Fig. 3 is a detail per spective view of parts of the board detached.

Similar numerals of reference are emvand these y are soldered each good electrical connections made' ,between the ri Vshort-circuitin'g rs prevented.

ployed to indicate corresponding. parts throughout the Several figures of the drawings.

10, formed of wood or any suitable non-connumber of openings, these being preferab y arranged at regular intervals in cross-rows, and through each' opening is placed a contact-rin 11, formed of metal, the opposite edges ot the'ring being flanged or turned, as indicated in Fig. 2, in order to prevent movement. of the ring from position. These rings may be formed of light sheet metal and rapidly placed in position by a suitable fianging machine acting on a single ring or a number of rings simultaneously.

In boards of the. most simple construction two boards 10 10 are employed, each provided with alined openings. The rear face of one of these boards-the board 10, for eX-' ample-'is provided with a series of verticallyarranged grooves 12 for the reception of one set of wires-21s, for instance, the jack-wireswire to a single vertical row of circuit-closing rings. The

other board 10 is provided with a series of.

horizontal grooves 12 for the reception of thelother set of Wiresfor example, the linewires-and these are soldered each to a horizontal row of circuitclosing rings on said board 10. g Between' placedpa third board 15, having 'o enings 16 malinement with theo enings o the other Iboards and preferably o such ,diameter as to permit the entrance of the fianged'ends ofv the circuit-closing rings, as will be seen on reference to Fig. 2. These'spacing-boards are of suflicient thickness to prevent Contact ngs of the two boards, so that .With a board constructed as described it Will be seen that by inserting a suitable cir- In carryingout the invention the beardthese two boards isl cuit-closing member-for example, a plugf l in two alined openings of the boards 10 10 a circuit will be closedoetween a line-wire and a jack-wire, and owing to the arrangement of the line-wires any line-Wire may be connected to any jack-wire. l

Where the switchboard is intended for controlling metallic return-circuits of telephone-lines or for other similar purposes, the

IOO

yas

.closing rings of the boards 10a boards are of like construction, so that by inserting a plug of suitable character through four alined rings two separate inetallic circuits may be closed. In a construction of this character it is preferred that the boards 10 10a be grooved for the re' ception of jack-wires and the boards l0 and 10b be provided with horizontal grooves for the reception of the line-wires. sertion of a plug 20 it will be seen that two cirouit-closinr rings of the

boards

10 and 10 are electrically connected, and two circuit#-v and 10b are connected.

For the convenience of the operator `the front\board is provided with a series of sets of numerals, one set being arranged above the circuit-closing rings to indicate the numbers of the jack-wires and the other below said rings for the purpose of indicating the c I closing ring formed of metal, the ring having numbers of the line-wires.

In Vorder to insure good electrical contact between the circuit-closing plug and the rings, the-latter are provided with slits 22, between which 'are formed tongues 23, the

of t e ring and being elastic, so that when a plug is inserted they will tend to bind against' thermore, so arranged that the friction due to the insertion of the plugs will keep the tongues bright and clean, and good electrical contact is thus made certain.

The plu 20 comprises a handle member 24, from wln'e projects a suitable shank 25, that is formed of metal and is designed to close a circuit between the rings of the

boards

10 and 10. From the shank portion prejectsa.

spindle, 26,'on which is mounted an lnsulat ing-collar 27 and an insulating-sleeve 28, the

latter servingas a support for a sleeve 29,

formed of metal, so that when the plug is in- On the intonglues being bent inward toward the center serted the rings ofthe boards 10t1 and 10b will be electrically connected.

Havingi thus described the invention, what is claime is- 1. Ina switchboard, the combination with a pair of parallel boards, each having a plurality of openings, circuit-closing rings arranged in said openings and provided with flanged end portions projecting beyond the faces of'thc boards, and a spacing member formed of insulating material arranged between thek boards and having openings of larger, diameter than the circuit-closing rings for the reception of the flanged ends of the rings and serving tomaintam the latter in spaced relation. i

2. The combination in a switchboard, ofva pair of boards, cach provided with a plurality of openings arranged in intersecting rows, and each having wire-receiving grooves in one of its. faces, rings arranged in the openings, and conductors arranged within the grooves and electricallyaconnected to said rings and a spacing member arranged between the boards and having openings in alinemen't with those of the boards.

3. vIn switchboard constructions, a circuitsolid ends and its intermediate portion being slit to form tongues that are bent inward toward the center of the ring.

4. The combination in a switchboard, of a plurality of boards arranged in parallel relation and provided with alining openings, ring contacts arranged within said openin s an provided with solid ends and interme ate inbent integral tongues arranged to bind against and hold a circuit-closing plug, and a spacing member formed of vinsu ating material arranged between the boards and having openings of larger diameter ,than said ring contacts.

In testimony that I claim theifoijegoing as -my own I have hereto afxed my signature 1n the presence of two witnesses.- c l WELBY D. WEIR. Witnesses:

CLAUDE V. Wina, H. J. JOHNSON.