US1567532A - Telephone switch - Google Patents

Description

H. MARBURG TELEPHONE swITc-H FiledJuly s; 1924 f which case, the horizontal conductors may be Patented Dec. 29,) 19.25.

UNITED STATES Pa'rlzrrA OFFICE.

i HANS MARBURG, OF HALENSEIE.,` GERMANY, ASSIGNOR T0 SIEMENS & HALSKE AK .TIENGESELLSCHAFT, A GERMAN COMPANY, 0F SIEMENSS'IADT, NEAR BERLIN,

GERMANY.

Application led July 3,

The invention is particularly adaptable to a switch structure in which the vertical conductors are assigned to trunk lines and the horizontal conductors to incoming and outgoing lines. This invention is an improvement on the switches of the type shown in Patent No. 1,515,735, granted'to Charles L. Goodrum et al on November 18,1924, in

used as links and the vertical conductorsassigned to incoming lines and outgoing or trunk lines. I

The 'object of this invention is to provide a switching device of the type referred to above in which the electrical connection of a plurality of conductors is simple and positive in manner, being eii'ected with awipingl action, and to also provide a switching device in which the operating parts are reliable, cheap to manufacture and readily accessible for repairs and replacement.

yses

'Ihe principal feature ofthe invention consists in the arrangement of coupling elements or members adjacent to coordinately disposed conductors between which a connec tion may be desired.

Another feature is the arrangement of a stationary insulated bar in which there are notched apertures provided for the purpose of limiting the movement of the couplingmembers.

Another feature is the arrangement of the horizontal' conductors in a plurality of verticalpplanes therebyA providing a greater' capacity than the coordinate switch structures heretofore disclosed. c A

Other features of the invention will be clear from the detailed description and the appended claims which follow.

With reference to the accompanyin drawing, Fig. 1 is a partial front assemb y view showing the coordinately disposed conduc- TELEPHONE SWITCH.

1924. Serial No. 723,882.

. tors' with their associated coupling members.

Fig. 2 is a cross-sectional elevation view showing ,theY actuating mechanism for the coupling members.' Fig. 3 'is a plan view of Fig. 2. Fig. 4 is a fragmentary perspective view of the switch structure.

The structure shown consists, in general, of bare wire conductors arrangedA in sets coordinately disposed to each other. The

conductors 1, 2, 3 and 4 of one set extendhorizontally and parallel to one another and are arranged in two vertical planes, one

behind the other. The conductors '5, 6, 7 and 8 of another set extend vertically and are arranged adjacent to each other and this set is located in a third vertical plane middistant between the other two planes and parallel thereto. The means for establishmg an electrical connection between the two conductor sets comprises a set of movable couplingl members'9, 10, 11 and 12, the free ends of which members are bifurcated and" bent out inv planes at right angles to each other, the distance between the points of bending being equal to the distance -between adjacent 'planes of the conductors. When the coupling members are. operated the bentout ends of each-engage a pair of coordinately disposed conductors4 establishing a 'connection therebetween.

A more detailed description of the invention and its method of operation are as follows:

' The sets of horizontal conductors comprising the wires. 1, 2, 3 and 4 and the sets of vertical conductors comprising the wires 5, 6, 7 and 8 are securely fastened at their ends to fixed members, not sho-wn, of the 'switch structure. The coupling members 9, 10, 11A

and 12consist also of bare wires and these are detachably and insulatively mounted 1n a* laminated support 15 and are arranged ad- ,4

jacent to one another in a yhorizontal plane, their free en'ds protruding through the three vertical planes 'of conductors. vEach `coupling member is bentin bifilar formation,

the sides of which may be Awelded togetherv to obtain the desired resiliency and the free ends are bent out as described above so as to effect contacts with both coordinate conductors of the pair with whiclI it is associated, when the operating mechanism' is actuated. i

The operating mechanism comprises a support 1d, upper plate 1 8 and a lower plate 19,

the entire embodiment being clamped tostrap 24 which, like the rail, extends the full length of the structureandisa fastened at 4 The lvertical rotatable bar be arranged for preselection, is operated by.

gether by the machine screws which also serve lthe pur ose of securelyfastening the ,coupling mem ers to the support. The support is pendulously mounte to a stationary olding piece 16. by means of stirrups 17 which are (pivotally connected to both sides of the hol ng piece and the support. The connections ofthe stirrups to the support are made to the `lobes 21 which are integral arts of the plate 18. The holding piece is detachably suspended from a rail 22 whichv its ends to fixed members.

25,'which may means of a magnet 26 beingenergized and its associated armature 27 being attracted. 'Fixedlyatt'ached to said bar is a row of positioning pins 28 which are indivi'dualto the horizontal links or subscribers lines depending upon the type of system to whichy lthis switch structure is adapted.' On plates v 19 are integrally formed inverted channelshaped lugs 34 to which ,are pivotally at tached U-shaped links 29 and each of these= links is so arranged as to normally rest upon one of the pins 28. When thepins 28 von -.the bar are rotated, all the links assoiciated with said pins are yforced upwards and are positioned in operable relation toA lother pins 30. The second mentioned ins are fixedlyl attached to other rotatable ars 31 which are assigned individually to each of thelink circuits or subscribers lines, as the case may be, andarranged parallel thereto. l

For the sake of explaining the further operation of'` the switch, it is assumed that the horizontal rotatable bars are assigned individually to subscribers lines. When a subscriber removes his receiver from the hook 'a magnet 33, which is associated with the. rotatable bar 31, assigned' to Athat particularline, is energized and by means of the arma-l .ture 32, the bar 31 is rotated and 'the operat ing (pins 30, attached thereto, are also ro'- tate stated above and this pin, in its rotation, engages said operated link thereby movin the operating mechanism to anroif-norma I position against the tension of spring 40.

This operation will pull the coupling membersV 9, 10, 11 and 12 rearwardin the direction of their length to effect contacts with One of these operating pins is in 'op-4 erable relation with an operated link 29 as .set of conductors 1, 2, 3, 4.

the conductors 4 and v8, 1 and 7 3 and 6 and 2 land 5, respectively, establishing thereby an electrical connection between the subscribers line and a preselected trunk. A

As soon as the connection between the conductor sets is established, .the magnet 26 is deenergized,`the armature 27 released and the rota-table bar 26 is restored to normal by the tensioned condition'of spring 38 to be ready for a subsequent call. i

sociated magnet 33 is deenergiz'ed thereby lreleasing its armature 32, and the rotatable bar '31 is restored to normal bythe operated vv condition of spring 39. The return of pin 30 to normal releases the vlink 29 which now drops clear of the pin, and the stressed ,con-

dition of'retractile spring40 draws the op.-v

erating mechanism back to its normalposition thereby breaking the connectionl between the coupling;l members andthe conductors',

In order to release the ,connection the as-A.`

The return of the operating mechanism to itsv normal position is controlled by the stop 41 which consists of a bentprojection formed integrally with plate 18. `This stop is proing the coupling members to against the conductors.

At a fixed distance back of the inner row of conductors is located an insulative bar be thrust ly preventing these members. v

anismis shown in three positions, namely,

' the upper position representing it in itsnormal condition, the middle position showing it still in its normal condition but with its associatedlink 29 positioned by an operating' pin 28, and the lower position showing it in its olf-normal condition with its operated link in engagement with a second operating pin 30-and clear of its positioning pin 28 any detrimental vibrations .in H

In Fig.. 2, the switch operating lmechvided in order to prevent the operatingmechanismln its return movement from fgoing beyond its normal posltion and causwhich pin is nowshown 'restored vto .normal indicating that the rotatablebar 2,5, to which it is attached is ready 'for a subsequent call.

By first operating two o'f the vertical bars 25 and then one of the horizontaljbars. 31" v two setsof conductors 5, 6, 7, 8 may be con-'lf' nected together through the lmedium of .a

What is claimed is: A

' 1. In a selective switch, a plurality of sets' free ends projecting into proximity to the conductors of said sets, and cooperating bars -of horizontal conductors arranged'` 1n the',

form of a'quadrilateral beam, a set of vertical conductors arranged to bisect said set of horizontal conductors, a set of coupling members arranged to intersect said sets of horizontal andvertica-l conductors, yandan operating mechanism pivotally supported and arrangedltormove said set of coupling1 sets of coordinately .4. In a coordinate switch` structure,- coordinately disposed rotatable bars, sets of conductors, an operating mechanism pen-dulous-g4 ly supported, a set of couplingmembers,

members intoxengagement with said conductor sets.

3. In a coordinate switch structure, sets of conductors coordna'tely disposed, a set of sai sets of conductors, an insulatin embodiment, pivotally suspended in whic said set of coupling membersl 1s detachably mounted, a link pivotally connected to said: embodiment, a` rotatable operatingbar, a

positioning in'on said operating bar, a sec-v ond rotatab e operating bar, an operating pin on said second bar, means for operatin the first mentioned :bar to rotate the sai positioning pinthereby positioning the said link in operative relation to.' the said operating pin, and means for voperating ,the said second bar to rotate the said operating pin thereby engaging said link to swingthesaid embodiment to effect a connection lbe'` tween said Set fof cou ling'members and Said- 'sposed conductors.

and means for rotating sai rotatable' bars toswing said operating mechanism 'to efectf an engagement between said set of coupllngl members and said sets of conductors.

l5. In a coordinate switch structure, a horij zontal operatingA bar, a 'vertical operatmg' bar, a set of horizontalconductors, a set of `anism, a b1 vertical conductors, an operating mechanism members su orted by said operating mechi Pilrcated end on each of said .4 coupling members, and means -for actuating i counling members coordinately disposed to .Y Y

horizontal rotatable bar, a vertical rotatable said rotatable bars in sequential order to I effect engagement between said set of coupling members and said sets of conductors,-

and an insulative bar common to a lurality of sets of coup ing members and notch for eac coupling member of said sets to member. v Y

7. In a coordinate switch structure,`a

bar, a set of horizontal conductors, a set of vertical conductors, an operating-mechanism .pendulously supported, a yset of coupling members fixedly attachedto said operating mechanism, means. for rotatin the vertical operatlng bar primarily'and t e horizontal aving Ya prevent vibrations ofthe couplirjl p operating barseoondarily (to swing said operating mechanism to effect connection between sa'd set of coupling members and lsaid. con uctor sets, andan insulative bar having notched apertures for the said set of i couphng members to prevent ydetrimental vibrations of the said set of coupling members when the said connection is broken or when the switch structure is shaken.' v

8.111 a coordinate switch structure7 operf ating bars coordina-tly disposed, a set of horizontal conductors arranged in :the form of a quadrilateral beam, a set'of vertical conductors arranged to bisect said set of horizontal conductors a set of coupling members arranged to intersect said sets of horizontal, andl vertical conductors and an supported,V

operating mechanism pivotally and arranged under the conjolntA operation of said operating bars to swingsaid set of..

conductory sets.

' coupling members into engagement with said "i In witness WheI'Of, I hereunto subscribe4 'my me this 24th day of May A. n., 1924.- f

t y A.alarmasMARBURG. v

a conductor in each of said horizontal and l

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