US1682433A

US1682433A - A cobpgbation of

Info

Publication number: US1682433A
Authority: US
Publication date: 1928-08-28
Anticipated expiration: 1945-08-28

Description

Patented Aug. 28, 1928.

UNETED STATES HENRY ROBERT SPENCER,

SWITCHBOARD & SUPPLY COMPANY, ILLINOIS.

TELEPHONE APPARATUS.

Application filed April 17,

My invention relates to a telephone apparatus used in connection with a-telephone system in which the well known superimposed ringing principal is employed for ringing or signalling .af called for subscriber on a party telephone line without signalling the other subscribers on said party line.

An objectoffniy invention is the provision of an alternating current; relay' whi'ch is sim'- ple and inexpensiv'e in construction and efficient in its operation." I v Another object of my invention is the utilization of my alternating current relay in the subscribers substation for effectively connecting the call bell of said substation in circuit with the telephone line, to which said substation isconnected, during the application of ringing current to said telephone line, and to disconnect said call bell during the non-application of ringing current and during conversation so that no current will flow through saidcall bell thereby increasin the efficiency of the telephone system.' 'Fiach substation on the party line is provided with my alternating current relay whichrelay is associated with the call bell. Vhen ringing current is applied to the said party line each one of saidrelays will operate to effectively connect the associated call bells with the telephone line and when ringing current is not applied to the said line the said relays will operate to disconnect the call bells from said line so that no current will fiow through the coils of said call bells thereby increasing this elficiencyof the telephone system and to effect better transmission.

The above features as well as others will be more particularly pointed out in the ensuing specification and for a clearer understanding of my invention reference may be had to the accompanying drawing in which l ke reference characters in the several views denote like parts, and in which;

Fig. 1 is a front elevation of the alternating current relay of my invention:

Fig. 2 is a top View of Fig. 1;

Fig. 3 is a left side elevation of Fig' 1;

Fig. 4 is a perspective view of the armature associated with the relay of my invention; and I Fig. 5 is a perspective view of the armature supporting frame.

Referring now more in detail to my invention as illustrated in the accompanying drawing it comprises a magnetiz-ible core 1924. Serial No. 707,024.

1 around which is wound the usual windings 2 between the spool heads 3 which are secured to the core 1, said windings 2 having connection with the terminals 4 secured to one of the spool heads-3. A mounting brackct 5 is provided withan integrally, formed ear 9 formed at right'fangles to the said bracket 5 and provided with'an opening through which the, threaded end of the core 1 extends and a nut- 10 is provided which has-screw-threaded engagement vwith said threaded end of said core to secure my re.- lay to the mounting bracket 5. i i

An armature l5 isprovided which has its end 16 reduced and provided with a pair of suitable transverse orifices 14. Asupportmg member 17 of suitable conducting material is provided which has a pair of integrally formed ears 18 properly spaced to permit the insertion of the reduced end 16 of the armature 15 and a trunnion pin 19 is provided in one of the ears 18 and adapted to engage one of the transverse orifices 14 in said end 16 While an adjustable screw 20 having its one end cone shaped extends through and has screw-threaded engagement with a suitably tapped orifice in the other ear 18. said cone shaped end extending into the other transverse orifice of thepair of transverse orifices 14 provided in the reduced end 16 of armature 15. The trunnion pin 19 and adjustable screw 20 serve to pivotally support the armature between the cars 18 of the supporting member 17. The screw 20 is adjustable to obtain the correct pivotal movement of the armature 15, and a suitable lock nut 21 is provided for the screw 20 for maintaining said screw 20 in its adjusted position. A terminal 22 is integrally formed with the supporting member 17 for receiving an external conductor. A leaf spring 24 having a contact member 25 of suitable conducting material is provided and secured to the reduced end 16 of the armature 15 by suitable screws 26 which eX- tend through suitable openings in the said leaf spring 2 1 and then have screw-threaded engagement with suitably tapped orifices in the armature '15. Another leaf spring 28 is provided which is secured near its one end to the mounting bracket 5 by suitable screws 29, said leaf spring 28 being insulated from the. bracket 5 and screws 29 bv suitable insulation strips 30. The end 28 of spring 28 is adapted to receive an external conducporting .rneiriber 17 is.

tor the external conductor connected to said end 28 adapted to be connected in circuit with the external conductor connected to the terminal "22 1 when alternating 'current is flowing through winding. ofzmy relay via spring 28, contact 25 spring 24, armature 15, cars 18, member 17 and terminal The armature sup oortirl g, member 17 is secured to the mounting bracket 5 by suitable screws 323vlrich pass thpough suitable openings in'fthejsaid bracket It and through suitable 'penipgs in: the insulation strip 33 whichinsulates" the member 17 from the bracketfi, and then have screw-threaded .th'e 'rnotiittinji' tracker 5.

the supporting are ins'tilated by suita le b i as -T Mi i ture 1. .1 11

Y cu' d to t e mek t 5 in s unlfa position that the tree eridof the leaf spring W "isldirectly over and at right angles to the 'free endof the'lealfspring 28, the contactv member being normally out of contac tliral engagement with the free'end of said leaf 'spring 28i The enlarged end 15' of the armature 15" iso'fsuc'h ashape and weight, and the armature 15 i's'piv'ot-a'lly snspended at such a hint, that' when ,the mounting plate is in its vertical mounting position as-shown in Figs. land 2, the contact member 25 of'the leaf spring 2 4 is maintained out of iigagement with the leaf spring 28, and the enlarged end 15' of armature 15 will be in alignment with only a small arcuate portion otthe'fne end of the core 1. Now when altrnatingicurrent is passing through the winding 2 of the coil of my relay, .the core 1 is'magnetized and will attract the armature 15 at its enlarged end 15' and due to the attraction of the magnetized core 1 and the said enlarged end 15 not being in direct alignment with the center of the free end of the core 1, the armature 15 will move about its pivots between the cars 18 of the member 17 until the enlarged end 15 is in direct alignment with the free end of the core 1, at which position the contact member 25 secured to the leaf spring 24 will he in contactual engagement with the free endof the leaf spring 28. My alternating current relay will remain energized so long as alternating current is passing through its winding 2 whereby the contact member 25 remains in contaetual engagement with the leaf spring 28 to maintain a closed circuit between the terminals 28' and 22. hen current no longer flows through the winding 2 of my relay, the core 1 dcmagnetizes whereupon the armature 15 restores to its normal resting position by gravity whereby the contact member 25 disengages the leaf spring 28 to open the circuit with which the relay may be associated. The center of gravity of the armature 15 while sa d armature is in its pivotally means of mountedpos'ition is such that the armature 15 will normally rest in such position that the contact member 25 will not engage the leaf spring -28 when no current is flowing through the winding 2.

Having described a particular (llllbOt iment of my invention as illustrated, it is to be understood that I do not wish to be limitdtdthe exact'structure as described and illustrated as changes and modifications will ieadilysuggest the1nsclves to'those skilled in the art, but that I intcnd to cover all that which may come within the scope and spirit of the' ap' ended claims.

What clim as new and desire to secure by UnitedStates'Letters Patent is: v

device of the class described including a magnetizable core, a winding for said core, sai'd core and winding forming .a single mountable'unit, a mounting" bracket having an integrally formed ear, means for secur- 'ng saidunit'to fsaid ear, a fpe'ndulous armature having its one end reduced and its other'end enlargei'means secured .to said mounting bracket for'pivotally supporting said armature at its reduced end and for positioning said enlarged end in a vertical plane 'pariillel'to the axis of said core and in operative )osition relatireto one end of said magnetiz lecore, said supporting means indluding'an adjustable screw adapted to adjusti'the pivotal movementvo'f the said armature and to'be locked in its adjusted position, a contact spring secured to said armature, a contact spring secured to said bracket,

and means "for connect'ng operating current to the winding of saidvcorc to energize said core whereby said armature is pivotally moved in a lane parallel to the face of the core of sai e'lectromagnet, to ciTect con tactual engagement of said contact springs.

2. A device of the class described including an electromagnet, a mounting bracket having an integrally formed ear member, means for securing said electromagnet on said integrally formed ear member a pendulous armature having its one end reduced and its other end enlarged, means for pivotally supporting said armature upon said mounting bracket said enlarged end being positioned in a vertical plane parrallel to the axis of said electro-magnet and in operative position relative to the core of said electromagnet, said supporting means in cluding an adjustable screw adapted to adjust the pivotal movement of the armature and to .be locked in its adjusted positions, a contact spring secured to the reduced end of said armature, a contact spring secured to said bracket and havin one of its ends in operative position relative to said first contact spring, said elcctromagnet operable to attract said enlarged end of said armature to move the same in a plane parallel to the face of the core of said electromagnet to rcontactual engagcmen cause said contact springs to make contactual engagement when operating current is flowing through said electromagnet, said enlarged end of said armature also adapted to restore said contact springs to discontinue the contactual engagement of said'contact springs.

3. An alternating current relay of the class described including an electromagnet, a mounting member, for supporting said electromagnct, a pendulous armature p'ivotally supported in a vertical'plane parallel to the axis of said electromagnet and in operative position relative to the core'of said electr magnet by means including an adjustable screw adapted to adjust'the pivotal movement of said armatureand be locked in'its adjusted position, a pair o' f'contact springs normallydisengaging each other, on'e of said contact springs secured to-said armature and the other of said pairsecured saidmounting member,fmeans for energizing saidelec tromagnet to operate said armature and move the same in a plane parallel toithe'face of the core of said electromagnet to cause said Contact springs to engage each other to close a circuit through said contact springs, said armature operable by gravity to discontinue the engagement of saidcontact springs to open the circuit through said contact springs and pivotally balanced in its normal position to maintain said contact springs out of 4 A device of the class described including an electromagnet, a mounting member, means for securing said electromagnet to said mounting-member, a pendulous armature having a contact spring-secured thereto pivotally supported in a vertical plane parallel to the axis of said electromagnet and in operative relation of the core of said electroinagnct by means including anadju stable screw adapted to adjust 'the pivotal movement of said armature and to be locked in its adjusted position, another contact Spring secured to said mounting plate, said armature adapted to be operated by said electromagnet to move the'same in a plane parallel to the face of the core of said electromagnet to effect contactual engagement of sa d contact springs to close a circuit through said contact springs and operable by gravity to discontinue the contactual engagement of said contact springs to open the circuit through said contact springs. A

5. A device of the class described including an electromagnet, a mounting member having an inte -ally and right angularly formed ear, means for securing said electromagnet to said ear so that said electromagnet is parallel to said mounting member, a contact spring secured. to said mounting plate member and having its one end adapted to receive aconductor, a pendulous armature having a contact spring secured tos its one end, means including an adjustable screw adapted to adjust the pivotal movement of said armature'and to be locked in its adjusted position secured to said mounting member for pivotally supporting'and positioning said armature upon said mounting member so that the' other end of said armature is positioned in a' vertical plane parallel to the axis of the core of said electromagnetand-in operative position with the core of said electromagnet and its contact spring in operative position relative to said first contact spring, ing a normally balanced position so that said 'contaet springs do not engage each otherfbut adapted to assume a" osition' to effect c'ontactual engagement 0 springs when 'said elec tromagnet' is ener gi zed to cause said armature 'to' move in a plane parallel to the; face of the core of said electromagnet'to "effect said contaetual engagement." f6. An'alternat-ing current relay of the class described" includin an electromagnet, a supporting member or supporting said electromagnet, a contact spring secured to said'supporting member-fa pendulous armature having a contact spring secured thereto, means for pivotally supporting said armature in a vertical plane parallel to the axis of the core of said electromagnet and in operative'position relative to the said 'core of said electromagnet, said means including an adjustable screw adapted to adjust the pivotal' movement of the armature and to be locked inits adjusted position, said armature operable by said electroma'gnet'to move said armature in a plane parallel to the face of the core of said electromagnet to'efl'ect conta'ctual engagement of said contact springs and operable by gravity to discontinue the contactual engagement of said contact springs when said electromagnet is decnerg'zed.

7. A device of the class described including a mounting member having an entegrally formed right angular car, an electromagnet secured to said ear and parallel to said mounting member, a contact spring secured to said mountin member parallel to said electromagnet, a pendulous armature having a contact spring secured to its one end, means including an adjustable screw adapted to adjust the pivotal movement of the armature and to be locked in its adjusted position for pivotally supporting said armature in a vertical plane parallel to the axis of the core of said electromagnetand in operative position relat ve to said electromagnet and said second contact spring in operative position and at right angles to said first'contact spring, said armature having its other end shaped and of such weight that said armature is normally balanced in aid supporting means in such a position .said armature havsaid contact that said contact springs are out of engagemcnt and also adapted to be moved in a plane parallel to the face of the core of said clcctromagnct when said electromagnet is energized to effect contactual engagement of said contact springs to close a circuit through said springs.

8. A device of the class described including a mounting member, an electromagnet secured thereon, a contact spring secured on said mounting member and parallel to said electromagnet, a pendulous armature having a contact spring secured to its one end, supporting means including anad'ustable screw adapted to adjust the pivotal movement of the armature and to be locked in its adjust-ed position, for pivotally supporting said armature near its said one end, secured on said mounting member in' such position that the said second contact spring is at right angles to said first contact spring and the free end of said armature .liesin a vertical plane parallel to the axis ofthe core of said electromagnet, said free end of said armature adapted to balance said armature in said means so that said contact springs do not engage each other and also a apted to be attracted by said electromagnet vto cause said armature to move in a plane parallel to the face of the core of said electromagnet to .ctl'ect contactual engagement of said contact springs to close a circuit through said contact springs.

9. A device of the class described including a mounting member, an electromag'net secured thereon, a. contact spring secured on said mounting member and parallel to said electromagnct, a pendulous armature having a contact spring secured to its one end, supporting means, for pivotally supporting said armature near its said one end including an adjustable screw adapted to adjust the pivotal movement of the armature and to he locked in its adjusted positions, secured on said mounting member in such position that the said second contact spring is at right angles to said first contact spring and the free end of said armature lies in a vertical plane parallel to the axis of the core of said electromagnet, said .free end of aid armature adapted to balance said armature in said means so that said contact springs do not engage each other and adapted to be attracted by said electromagnet to cause said armature to movein a plane parallel to the face of the core of said electromagnct to etlcct contactual engagement of said contact springs to close a circuit through said contact springs, a mounting plate, and means for securing said mounting member on said mounting plate in such position that said armature assumes a vertical position.

10. A device of the class described including a mounting member, an electromagnet and a contact spring mounted thereon parallel to each other, a pendulous armature having a contact spring secured thereto, means, for pivotally supporting said armature including an adjustable screw adapted to adjust the pivotal movement of said armature and to be locked in its adjusted positions, secured to said mounting member so that said contact springs are at right angles to each other and said armature lies in a vertical plane parallel to the axis of the core of said electromagnet, said armaturebeing balancedvertically in said supporting means to normally maintain said second contact spring out of enga ement with said first contact spr-ing and adapted to be operated by Said electromagnet tocause said armature to move in a plane parallel to the face of the core of said electromagnet to effect contactual engagement of said contact springs upon the encrgization of said electromagnet.

11. A device of the class jdescribed including a mounting member an electromagnet and 'a contact spring mounted thereon parallel to each other, a pendulous armature having a contact spring secured thereto, means, for pivotally supporting said armature including an adjustable screw adapted to adjust the ivotal movement of said armature and to be locked in its adjusted positions, secured to said mounting member so that said contact springs are at right angles to each other and said armature lies in a vertical plane parallel to the axis of the core of said electromagnet, said armature being balanced vertically in said supporting means normally maintain said second contact spring out of enga ement with first contact spring and adapte to be operated by said electromagnet to cause said armature to move in a plane parallel to the face of the core of said electromagnct to effect contactual engagement of said contact springs upon the energization of said electromagnet, said armature and its contact spring restoring the normal position by gravity upon the deenergization of said electromagnet to break the connection of said contact spring.

12. A device of the class described including a mounting member, an elcctromagnct and a contact spring secured on said mounting member parallel to each other, a pendulous armature having a contact spring secured to its one end, means including an adjustable screw adapted to adjust the piv otal movement of said armature and to be locked in its adjusted positions for pivotally supporting said armature in a vertical plane parallel to the axis of the core of said electromagnet and in operative position relative thereto, and its associated contact spring at right angles to said first contact spring, said armature having its free end adapted to be attracted by said clectromagnet and move in a plane parallel to the face of the core of said electromagnet to elfect contactual engagement of said contact springs to close a circuit through said contact springs when said electromagnet energizes, and adapted to restore to normal position by gravity to effect disengagement of said contact springs and to maintain said contact springs out of engagement when said electromagnet de-energizes.

13. A device of the class described including a mounting member, an electromagnet mounted on said mounting, member, a contact spring secured on said mounting member parallel to side elect-romagnet, a. pendulous armature lying in a vertical lane parallel to the axis of the core of said e cctromag'net and having its one end reduced and its other end enlarged, a contact spring secured to the reduced end of said armature, means, for pivotally supporting said armature at its reduced end including an adjustable screw adapted to adjust the pivotal movement of said armature and to be locked in its adjusted positions, secured to said mounting member and positioned so that said second contact spring is in operative position and at right angles to said first contact spring and said enlarged end is partially in alignment with a portion of one end of the core of said electromagnet, said armature normally balanced vertically in said supporting means to maintain said contact springs out of engagement with each other, andsaid enlarged end adapted to be attracted upon the energization of said electromagnet and to move in a plane parallel to the face of the core of said electromagnet into full alignment with the end of the core of said electromagnet to effect contactual engagement of said contact springs.

Si ned by me at Jamestown, in the county of Ciautauqua, and State of NewYork, this 14th day of April, 1924.

HENRY ROBERT SPENCER.