US1374366A

US1374366A - dickerson

Info

Publication number: US1374366A
Authority: US
Publication date: 1921-04-12
Anticipated expiration: 1938-04-12

Description

G. W. DICKERSON.

TELEPHONE SWITCH.

APPLICATION man lune 26,1916..

Patented Apr. 12, 1921.

4 SHEETS-SHEET 3.

g@ u@ m l l..

jizz/52222725 G. W. DICKERSON.

TELEPHONE SWITCH.

APPLICATION FILED JUNE 26.1915.

Eatented Apr. 12, H2L

4 SHEETS-SHEET 4.

jizz/522ml' UNITED STATES FATFNT QFFEQE.

GEORGE W. DICKERSON, 0F GALION, OHIO, ASSIGNOR T0 THE NORTH ELECTRIC MANUFACTURING COMPANY, OF G-AIION, OHIO, A. CORPORATION OF OI-IIO.

TELEPHONE-SWITCH.

Specification of Letters Patent.

Patented Apr. 12, 1921.

Application filed `Tune 26, 1916. Serial No. 105,781.

'and useful Improvements in Telephone- Switches, of which the following is a speciication. Y

My invention relates to electrical switches and is especially designed to be used 4in connection with telephone exchange systems or other systems wherein it is desirable to interconnect a large number of electrical circuits.

This switch is particularly adapted to be used as' a line selecting switch for quickly and automatically effecting connections with calling subscribers lines in telephone exchange systems.

The switch is preferably arranged to serve a group of one-hundred lines. The lines are formed into sub-groups of ten lines each and connected to ten parallel rows of flexible contact springs.

The movement of the springs of each row is controlled by an associated electro-inagnet. The springs of each row are arranged in sets, one set being allotted to each line. In the present instance I have shown three springs in pairs as comprising a set. As there are ten lines served by each row there will be thirty pairs of contact springs to each row.

Intersecting or crossing the tens rows of flexible springs at right angles are ten sets of units contacts. Fiach set of these contacts comprises three metallic strips, pro` vided respectively with ten downwardly7 projecting extensions.

These extensions are normally out of engagement with the tens contact springs. Each row of units contacts is provided with an electro-magnet for controlling its movement. In order to connect with any line it is only necessary tooperate the electro-magnet associated with the tens row containing the desired contact. The operation of this electro-magnet will bring the sets of contacts of the row. into alinement with the tensions of all the units strips. Then by operating the electro-magnet of the strip which is in alinement with the contacts of the desired line, the extensions of this operated strip will come into engagement with the contacts of the desired line.

The details of construction and operation vill be pointed out in the description to fol- My invention is illustrated in the accompanying drawings wherein:

Figure l is a plan view of the switch.

Fig. 2 is a side View of the switch.

3 is a rear view of the switch.

Fig. 4 is the side sectional view on line a-ot of Fig. 1.

Fig. 5 is a side sectional view on line b-b of Fig. l.

Fig. 6 shows a side view of a units element in detail.

Fig. 7 shows a plan view of a units element.

Fig. 8 shows a plan view of the tens element with a number of the line or group contacts removed.

Fig. 9 is an enlarged sectional view showing a portion of a tens element.

ig. 10 is a schematic arrangement showing the manner of cooperation of the tens and units elements.

kReferring to the drawings, the various magnets and moving parts are mounted and supported within a main frame or case 50. The tens magnets 40 are mounted on opposite sides of this case, live being on one side and five on the other. The units magnets 50 are mounted in a similar manner on opposite sides of the case. The magnets are held in place by the screws 45. Each tens magnet 40 is provided with an L shaped armature 42, plainly shown in Figs. 2 and 5. An opening is provided in the frame 50 to allow the armature to be mounted so the smaller arm can be engaged or attracted by the core of electro-magnet 40. Each armature is held in place by means of a leaf spring 43 which bears against the longer side of the armature, as shown in Figs. 2 and 5.

By referring to Fig. 2, it will be noted that the opening in the frame is cut in such a. manner to provide a series of lips or pro Iiections 46 which pass through the cut-out portions 48 of the armatures. Extending across the four sides of the frame are bars or strips 44 which are fastened to the frame by means of the screws 47. These bars pass just below the bottom portion of the armatures as shown inv Figs. 2, 3 and 4, and serve to securely hold them in position. There is, however, suliicient space between the bars hear SO and e their nornial S5 and o Corne in alinerits s are belowv the units har `he u -its hars, howlide hethe pairs ol extension.

or Contact 75 'd ivill When the har rt d hy the e tension under normally adpisted.

each comprisstetsa it rollows that t en sets olf units e oper-atei `he ten u1 ontaets will '-.nsions ll e ot contacts in ll of the No.

meet With any villl l rener units ma s the tens hars or G ars ntaets 22.

ere with the t .i the projections on exe i to th 22 are .L L downwardly so as to s tions th ter;A

ill

enger en )Listing nut 2T and cause the use a eonsequent mover ndi tens

J. 1A 'o1-LCL ions .f- [eo n naied en iorinal Co l e ad more ai )rin le are ten unit J! i eo rent en sets e con extens Quinn is shown in the draw ooerzite sets o nient Wit s a C e b 7 1.). nu. oo. .L G LL C .0. i D n S i.

ed to operate rounded portions xg .VIL

20, as shown pass p ol' Dre-- Tl o i f1 'L re tens hai 40 winch is orL lnsula e tlin the pairs of rno's Fig serve to support the hars 2O and n at 25 and ded W pposite en hioh has a o reeeive t ed on e oi d portier inut @el a series the eontae ded Wit i tv the sil er insula Qroj eet aho )ed y shown i2 is arran rods are threaded 2S iv Ting this Athin th ich ass. These Contact springs are (l provi openings 2 thi e ends o 22 project hej/coni' Conta airs ot Contacts to 0 l0 molded 111 the insulated Dar ded at its o i pted i the threade 1g'. 9 an ate it ed in a conclu )air o Py rota rCl ion a loe pos These contee or beneath the hed 3l so as to form terr tina oushin o fl These square steek, as shown at 2", ivliie enga"- through in n he op fasten al 80, as Dlain L gridly arm.

ed or reduced as show hieh n the brackets 36 Inoun ial is provided xvitl 2l to aeeoznrnod The thirt 40 each tens har 2O are arranged in l 44: and the armatures t0 allow free Inovement of the latter.

Each armature a rod or 5 made of is round 35. The portion is provi thread v.' Y in the metallicl hui The bar 2O is provi with a metallic threaded openin l5 rod 29.

The rods 29 and the throng'1 the frame 50.

2O The bar or rod 26 is also provid adjusting nut 27. threaded portion turns \v 23. In order to ho in its adjusted posit 25 vided.

ing rnater ooenings springs 22 D bowed as shown 30 the flared ends which bar 20. There are thirty har Q0 springs 22.

Q2 are

ri ing Inateri

5 and 9.

to Whi h electrica neeted.

Titae ten, there being` three each set.

t enz-rave 115 raped to asve shown 12o ereo il'j neeessar n tions int Y sleeta particuhar Containireuits of the ieee of nieta rar Contact l n.1 1S .117.34515 "f L O Sl Ulli? The r rod eushi .fr or r is co1.

. otendly and are adapted nie- erat noivn. nula lio the plu i are nioided or ernblocks l and 1er o' o';

Si si u ed `portion 7 letal hin lso provi and .7, the details .ch unit ha ir' is a t. 6 ion and Lian L vided ivith re nnr-terial Wl molded dem e flexible e ating hloc1 ot construct' the units bars or contacts are gli kiCki h trips l, 2 and bedded in the insulat in F10. 7. 1

-leferrino to Fi units bars are nro 6 enihed insulati :i

sions project to engage t talhc s shown The insu 60 with a metallic bus isoi? isin od educed the units hars brackets 37 mounted on top of the frame 50.

hinel llinto Whie1 q ree pa nected in the mair 1;'5

1') l o, oi each set are le; that is to say, No. l

. a seJ eonpr snr or contacts a re con nier shoivn.

rEhe units eentaets l 2, Connected in multi@ i n The rods l5 and the r ve to sungort 7 ser rouo'h tl l5 is threaded. porti ns and pass th strip ofeach of the rows are connected together and likewise strips 2 and 3 of each row are connected together.

The

contacts

1, 2 and 3 are shown ,connected to a cord circuit of the standard type.

lt will be'noted that the substation 110 comprising the usual receiver transmitter' and ringer is connected to the line conductors which extend to the line relay 112 and to ground through the contacts of the cutoff relay 111.

The removal of the receiver closes the circuit or" relay 115)J thereby lighting the signal `lamp 113. The lighting of this lamp indicates the number of the particular calling line. In order to connect the calling line to the cord circuit the button 116 is de pressed thereby completing the circuit of the electromagnet Ll0. The operation of this magnet causes the associated row of contacts 22 to be brought into alinement with the row of

contacts

1, 2, 3.

By pressing the button 115 the electromagnet 50 is operated and brings

contacts

1, 2, 3 into engagement with the set of contacts associated with the calling line. As soon as this connection is effected relays 102 and 111 are placed in series. The operation of` relay 111 disconnects the line relay 112 thereby extinguishing the signal lamp 113.

Talking current is supplied to the calling subscriber at 110 through the Winding of relay 100 and the winding of coil 101.

The connection is completed to a called line or trunk by placing the plug into the jack 107.

At the termination of the conversation the calling subscriber upon replacing his re ceiver causes the restoration of relay 100. rlihis relay in restoring completes the circuit of the supervisory lamp 103 indicating that the line should be disengaged, whereupon the plug 106 is removed from the jaclr107` and the buttons 115 and 11G restored to their normal position. The restoration of these buttons causes the deenergization of magnets l0 and 50 thereby causing the switch contacts to resume their normal position.

lllhile l have shown the

magnets

10 and 50 operated by buttons 115 and 11G they can be automatically operated upon the removal or" the receiver at the earring sub-station in amanner similar to the operation of the tens and units relays shown in the following patents to E. E. Clement: 1,105,490 of July es, isis; assise or NOV. a, i909; momie of August 11, 101e; 1,107,152 of August 1 1, 1914i and 1,109,017 of September 1, 1914.

The tens magnet-s Z10 and the units inagnets 50 can be substituted for the tens and units relays of theforegoing patents.

The contacts controlled by the tens and units magnets t@ ani .50 when a plurality of sets are used are connected in the same manner as the contacts of the tens and units relays of different groups or sets.

While l have shown a switch provided with ten. rows of tens contacts and ten rows of units contacts, the number can be increased to serve a large number ci" lines or trunks or diminished to serve a smaller nimber.

The switch as designed forms a compact structure with a minimum number vof parts and wiring. All the parts are readily accessible and capable of quick and accurate adjustment.

YWhile l have used the term telephone switch7 in the claims, it is to be understood that the switch is not limited to such use but may be used for purposes of connecting any form oi electrical circuits.

Having thus described my invention what I desire to secure by Letters Patent is:

1. ln a telephone switch, a plurality of sets oi contacts arranged in a row independent of one another', each set of contacts comprising a plurality of flexible springs, a plurality of other cont-acts arranged in rows, means for operating a row of individual flexible contacts, and means for operating the second mentioned contacts for cooperating with an individual set of flexible contacts independent of the other contacts in the row.

2. ln a telephone switch, a plurality of rows of contacts, each row comprising a set or" flexible springs independent of one another, a plurality of other rows of contacts arranged right angles to the irst mentioned rows, means for causing the coperation between said contacts by first operating a row of flexible springs and thereafter operating a row of the second mentioned contacts.

8. ln a telephone switch, plurality of rows of contacts, each row comprising plurality of sets of flexible contact sppings independent of one another, a plurality of coiiperating contaegs arranged at right angles to said rows, means comprising an electro-magnet for operating a row of flexible contacts. and means comprising an electro-magnet for operating the coperating contacts to engage a particular set of flexible contacts, said electro-magnets being the sole ans for causing tbc engagement olf said contacts.

1. ln a telephone switch. a row f flexible contacts, electro-magnet common to am for operating said row of contacts, a plu rality of sets oi cooperating contacts arranged at right angles to said row. an electro-magnet for operating said cooperating contacts means for operating both of said electro-magnets for causing the engagement ofa particular set of flexible contacts with said cooperating contacts, said electro-mag- CII nets being the sole means for causing the engagement ot said contacts.

5. In a telephone switch, a plurality ot flexible contacts arranged in a row, said contacts being rigidly fastened 'at one end, an insulated element, tie free ends ot said contacts passing tl rough said insulated element, a plurality ot coopera" g contacts, means comprising an electromagnet tor operating said element in order to bring the free ends ot said springs into alinement with said cooperating contacts.

G. In a telephone switch, the combinat-ion ot a plurality of sets ot flexible contacts arranged in a row independent ot one another, said contacts arranged in pairs, a movable element, the tree ends orn said contacts passing through said movable element, a plurality ot cooperating contacts, means for lirst operating said elements to move said flexible contacts into alincment with said cooperating contacts, and means for operating said cooperating contacts to engage with the flexible contacts with which they are alined.

7. In a telephone switch, a plurality oi flexible contacts arranged in row, one end of each of said contacts being rigidly fastened, a movable element, the free end of each ot said contacts passing through said movable element, a plurality ot sets of cooperating contacts, means comprising an electromagnet 'for operating said element to bring said flexible contacts into alinement with said cooperating contacts, and means comprising an electromagnet for operating said cooperating contacts to engage said flexible contacts.

8. In a telephone switch, a row of contacts comprising' a plurality of sets of flexible contacts independent of one another, a plurality ot rows oi` secondary contacts, means for operating said row of flexible contacts whereby all of said sets brought into alinement with all the rows ot secondary contacts at the same time, and means for operating any one of said rows ot secondary contacts for engaging the particular set of flexible cont-acts with which it is alined, the operation ot said rows being in a longitudinal direction only.

9. In a telephone switch, the combination with a pluralityv ot sets ot flexible contacts arranged in a row. a movable element, the free ends ot said contacts passing through said movable clement, a plurality or secondary contacts, means tor operating said element to more said flexible contacts into alinement with said secondary contacts, and means for operating a particular secondary contact tor engaging the flexible contact with which it is alined.

l0. In a telephone switch, a plurality of sets of flexible contacts arranged in a row, one end of each ot said contacts being rigidly fastened, ay movable element, the free end oft each oit said contacts passing through said movable element, a plurality ot sets ot secondary contacts, means 'for operating said clement to bring said flexible contacts into alinement with said secondary contacts, and means ior operating any one ot said sets ot secondary contacts to engage the said set ot flexible contacts with which it is lined. y

ln a telephone switch, a plurality of rows ot contacts, each row comprising a plurality ot sets oit flexible contacts independent of one another, a plurality of rows of secondary contacts, means for operating particular row ot' flexible contacts whereby each set ot said row is brought into alineinent with a particular row of secondary contacts, and moans for operating any row ot' secondary contacts to engage the set of flexible contacts with which it is alined, the operation of said rows being in a longitudinal direction only.

.12. ln a telephone switch, the combination of a plurality ot sets of primary contacts arranged in a row independent of one anot ier, a plurality of rows of secondary contacts, each row of said secondary contacts being primary contacts, means for operating the row et primary contacts for bringing each individual set into alinement with its allotted row of secondary contacts, and means for operating a row of secondary contacts for engaging the set ot primary contacts with which it is alined, the operation of said rows being in a longitudinal direction only.

ln a telephone switch, the combination ot plurality of rows ot primary contacts, each row comprising a plurality of sets ot contacts independent of one another, a plurality of rows of secondary contacts, each of said rows ot secondary contacts having access to a particular set of individual primary contacts of each row, means for operating any row of said primary contacts whereby each set of the row is brought into alinement at the saine time with a row of secondary contacts,means for operating any row of secondary contacts for engaging the set ot primary contacts with which it is alinedv` the operation ot said rows being in a longitudinal direction only.

lu a telephone switch, the combination ot a plurality ot rows of primary contacts, each row comprising a plurality of sets of contact springs fastened at one end indep-enoent of one another, a plurality of rows of secondary contacts extending at right angles to the rows of primary contacts and adapted to engage the free ends thereof, each row of secondary'contacts arranged to have access to a. particular set of primary Contacts of each row, means tor operating allotted to a particular set ot said primary contacts whereby the free ends of each set of the row is brought into alinement at the same time with a row of secondary contacts, means for operating any row of secondary contacts for engaging the set of primary contacts with which it is alined, the operation ot said rows being in a longitudinal direction only.

15. ln a telephone switch, the combination of a banlr of primary contacts arranged in rows, each row comprising a plurality of sets of contacts independent of one another, a plurality of rows ci secondary contacts provided with downwardly extending projecticns for engaging' the primary contacts, each row of secondary contacts having access to a particular set ot individual primary contacts of each row, means tor operating a row of said primary contacts whereby each individual set is brought into alinement at the same time with the rows of secondary contacts to which it has access, means for, operatinol any row ot secondary contacts for causing the downwardly projecting extensions to engage the particular set or primary contacts with which it is alined, the operation of said rows being in a longitudinal direction only.

1 ln' a telephone switch, the combination with a plurality oiw flexible contacts arranged in a row, a movable adjustable element, said contacts passing through said movable adjustable element, a plurality or" coperating contacts provided with a common adjusting device, means for operating said element to move said flexible contacts into alinenent with said cooperating con l tacts, and means for operating said coperating contacts to engage said flexible contacts.

17. ln a telephone switch, the combination with a plurality of contacts mounted within a single unit structure, certain of said contacts comprising a number or' rows of denible primary contacts, other of said contacts comprising a plurality ot rows of secondary contacts, a magnet mounted upon said unit structure individual td each of said rows of contacts, means for operating said magnets for causing the primary and secondary contacts to cooperate, said magk nets serving as the sole means for causing the coperation of said contacts.

18. ln a telephone switch, the combination with a bank or' contacts mounted within a "frame, said contacts comprising a plurality ot rows of iiexible contacts, each of said rows being provided with an adjustable movable element, a plurality of rows of secondary contacts mounted upon said trame, each row oit flexible contacts and each row ot secondary contacts being provided with a magnet mounted upon said frame, means for operating said magnets for causing the coperation of the flexible and secondary contacts, said magnets serving as the sole means tor causing the coperation orl said contacts.

i9. ln a telephone switch the combination of a plurality o' sets of flexible contacts arranged in a row independent ci one another, said contacts arranged in pairs, a movable element, the free ends ot said contacts passing through said movable clement, a plurality oi' copcrating contacts, means :lor moving said element to bring said flexible contacts into alinement with said coperating contacts, and means for operating said coperating contacts to cause them tot form a wiping contact between said pairs of flexible contacts.

20. ln a telephone switch, the combina* tion ot a plurality of line contacts, arranged in a row, said contacts arranged in sets, each set being allotted to an individual line, a magnet common to said row, a row of secondary contacts :tor each set ot line contacts, a magnet for each row of contacts, means for operating the magnet of the row of line contacts for bringing' each set ot individual contacts into alinement at the same time with a row of secondary contacts, means for operating any magnet ot a secondary row tor causing the contacts thereof to effect engagement with the set of individual contacts with which it is alined.

21. ln a telephone switch, a row ot primary contacts, an electromagnet common to and for operating said row oic contacts, a plurality of sets ot secondary contacts arranged at right angles to said row, an electromagnet for operating said secondary contacts, means for causing the engagement of a particular set of primary contacts with said secondary contacts, means Yfor energizing said electromagnets, a single energize.- tion of said electromagnets serving to-cause the engagement of said contacts,

22. ln a telephone switch, a plurality of primary contacts arranged in a row, one end of each oi" said contacts being rigidly fastened, a movable element, the tree end of each oit said contacts being controlled by said movable element, a plurality of sets of secondary contacts, means comprising an electromagnet Jfor operating said movable element to bring said primary contacts into alinement with said secondary contacts, and means comprising an electromagnet for operating said secondary contacts to engage said primary contacts, said magnets being the sole means for causing the engagement of said contacts.

23. ln a telephone switch, the combination oia plurality of sets ot primary contacts arranged in a row, a movable element, said element controlling the movement o' said primary contacts, a plurality of secondary contacts, means for operating said movable element to more said primary contacts into alinement with said secondary contacts, and means for operating a particular secondary contact for engaging the primary contact with which it is alined.

24. In a telephone switch, the combination of a plurality of contacts "mounted within a single unit structure, certain of said contacts comprising a plurality ot rows of primary contacts` other of said contacts comprising a plurality of rows of secondary contacts, magnet individual to each row of contacts, means for operating sait magnets for causing' primary and secondary contacts to cooperate, said magnets serving as the sole means for said cooperation.

25. In a telephone switch, plurality of rows of primary contacts, each roy.v comprising a set of sprinr independent oi" one another, a plurality oi rows of secondary contacts arranged at right angles to the first mentioned rows, means tor causing the cooperation between any number ot said primary and secondary contacts by operating a plurality ont rows ot primary contacts and thereafter operating a pluralityr or" rows of secondary contacts.

26. In a telephone switch, a plurality of rows of primary contacts, each row comprising a plura ity ot sets ot contact springs independent of one another, plurality ot' rows ot secondary contacts arranged at right angles to the rows ci primary contacts, a magnet individual to eac row ot contacts, means tor operating any number of said magnets for causing the cooperation of any number of primary and secondary contacts, said electromagnets being the sole means for causing the said cooperation.

27. In a telephone switch, a plurality ot sets of primary contacts arranged in a row independent ot one another, a plurality ot rows of secondary contacts, means for causing the coperation ot a plurality or' primary and secondary sets ot contacts by first operating the row 01"' primary contacts and then operating the required number of rows of secondary contacts.

28. In a telephone switch, a plu 'ality of rows of primary contacts, each row comprising a plurality of sets of contacts independent ot one another, a plurality of rows of secondary contacts, means for operating any number of rows of primary contacts whereby a set of each row is brought into alinement with the rows of secondary contacts, and means Jfor operating any number of rows of secondary contacts so as to cause the cooperation ot contacts with which they are alined, the operation of said rows being in a longitudinal direction only.

29. In a telephone switch, the combination of a plurality of rows of primary contacts, each row comprising a plurality ot sets of contacts independent ot one another,

a plurality ot rows ot secondary contacts,

each row of secondary contacts having access to a particular set of individual primary contacts of each row, means for operating any number ot rows of primary contacts whereby each set of the row is brought into alinement with a row ot secondary contacts, means for operating any number of rows of secondary contacts for engaging the set of primary contacts of the row with which it is alined, the operation of said rows being in a longitudinal direction only.

30. In a telephone switch, a plurality of primary contacts, arranged in a row, an electromagnet for said row ot' contacts, plurality of secondary contacts, an electromagnet for said secondary contacts, means for energizing said electromagnets, a single onergization of said electromagnets Serving to cause the coperation ot said primary and secondary contacts.

In testimony whereof I affix my signature in the presence of two witnesses.

GEORGE WV. DICKERSON. IVitnesses JOHN PonA'rsoH, A. MCCUNE.