US1276581A - Synchronizing system. - Google Patents

Description

c. E. scRlBNEn. SYNCHRONIZ'ING SYSTEM. APPLICATION FILED KAY I9 I'B'IS Patented Aug. 20, 1918,

Char/es Jef/nek ,n 'E 1 I' 1 I Char/e5 E, Scribner.

C. E.'SCR|BNER.

SYNCHRDNIZING SYSTEM'.

' APLlcAloN FILED Muis. 1915.

' Patnted Aug. 20,` 1918 2 SHEETS-SHEET 2.

` Y p -Jer fg me@ /m/en fok' by l miennes E. scniiarmr., or Jii'aico, viiniroigriassienfmgnv HIESEASLSIIGNMNTS,

y ro weerman amcrnlc cioiinnamr,-y nvconrona'rnn; af 'conrtiaarionfor rota.

srncinoiluzmesrfsrmn .specification ai Lem-n riant'.

l insumos niefixay -ia'iaiaf serai in. sans.

i Tolall whom it may-concern:

. Be it known that I, CHAiiLns E. SGRIBNER,

"la 'citizen oftheI United States, residing at 4 Jerichof in the countyA of. Chittenden and State o Vermont, have invented certain new and useful yImprovements inv Synchronizing Systems, of which the following is a ful,

. clear, concise, and exact description.

by atransmission line. 15`

This invention 'relates to synchronizing Y systems, and its principali object is m pmivide improvedl means for insuring the mainltenance of asynchronism between separated rotatable bodies operatively interconnected" yIn'accordance with its general the invention contemplates a system o the labove'type in"which at `least one of the bodies `is motor driven, and wherein 4the magnetic field of4 this motor may be` shifted under the control rof line current ippulses to aiect the Aspeed thereof. ore specifically, the invention comprises a 'stei `-.and `apparatus ywherein the motorb iving the body whose speed is to be cor` rbcted, is provided with a plurality of groups f of yoperating windings. Theenergization of these groups of windings is controlled lsus `V inviiuence o the magnetic` field as required.

\ matically.

A transmitting current'distributer 5, provided' with a' rotatable brush carrying arm 6, is adapted in the usual' manner of multi plex telegraphs to impart signaling and synclironizin current impulses to a transmission f line L. t the receiving station, these im- A recting segments and the necessary common conducting rings. `These segments and their pulses pass through the windings of a polarized line relay 10 of the usual construction and, if duplex o eration desired, the usual artificial line A Jis'provided.

At the station in which the line relay 10 is located, there is also provided a current dis-y tributer construeted, 1n the usual manner, of insulated transmitting, receiving and coreatures f `windings 18 and 19 of a polarized le is grounded, as shown.

. ratentedaag. saisis.

correspondin :rings are shown4 partlyde-V' .veloped in t e lower right-hand corner of Fig. 1, and are adapted to be interconnected bysuitable brushes 1'1 whichA arerotated in the direction of'the arrow' of Fig. 2 `by a p honic motor whose construction will be hereinafter described.--`l

Thepoint betweeithe windingsv `of line relay 10is connected in aswell-known manner to the common transmitting or sending rin o f the distributor, an`dTth'e rekyfis. provide -wth an armature 12 connected rto a ground-` ed source of energy 13' andcoperatingwith a pair of contacts 14 and 15, Contacts 14' and 15` are respectively connectedwthrough suitable resistances 16 and 17 to a air ,of relay 20. The ypoint between windings 18;.an'd` 19 p Leak .relay .20 is equip ed with an amature 25 which is coni necte to the common correcting ring; of the distributer and coperates witha contact 26 y connected to the conductor between contact 14- and resistance 16.y 'Contact VMis alsocon'- nected to the'conimon receiving' ngof the distributer in the usual manner. 5 i

There is also provided a other terminal o winding 32 is connected to the conductor interconnecting resistance 1,7 and contact 15, while ythe other terminal ,of winding 31 is'connected to one groupof, correcting segments. It will be noted that there are two correcting segments for each sending segment and that they are divided into two groups made up" of non-adjacent segments.

of theV winding 31 of correcting relay 30. The correcting relay 30 is provided with anl armature 35 connected to a grounded source of energy 36 and coperating with a contact 37. i

`Brushes 11 are drivento successively interconnect the `receiving, correcting and sending segments with common rings b`y a phonic motor. `This motor-comprises a rotor 40 mounted upon a brush carrying `shaft 41 and provided vwith la plurality of projecting teeth 4t2.r 'Surrounding the circum- ,ference o-rotor are a `'plurality of operat` olarized cor'-l `recting relay 30 providedwith a` air of.y windingstl and 32, two terminals o which areconndttediV to ether and grounded.` TheA One group is unconnected and 1s, therefore, dead, while the other group, as

kjust described, is connected to one terminal u nui;

' groups. In the motor shownfthere are three groups of four windings each, but, it is to be understood that4 .the number of groups and the number of windings 4per group may be increased or decreased as the occasion requires and Vas desired. One group, which for the sake of convenience will be arbitrarily desi ated as the first group, is composed of win ings 51, 52, 53 and 54. The second group is made up of the windings 61, 62, 63 and 64, while the third group is made up of windings 71, 72, 73 and 74.,

Associated with these operating windings is a multiple I'switch 75 which is controlled, as will be hereinafter explained, by line eurrent impulses to determine which of the hereinbefore mentioned groups of windings Will be energized at any articular interval.

.Switch 75 comprises a p urality of pairs of cams 85, 86 and 87. Each cam is provided with as many projecting teeth as there are groups of energizing windings, in the present instance there being four such teeth, and all are onnected to and rotated by a shaft 88. Shaft V88 is provided with a ratchet wheel 89 which is adapted to be engaged by a suitable holding pawl 90and a stepping pawl 91. Stepping pawl 91 is operated by an electromagnet 92, one terminal of whose windingis connected by a conductor 93 to contact 37 of correcting relay 30. 'The other terminal of they winding 'of electromagnet 92is grounded. One of the cams of each of the airs 85, 86 and 87 associated with 'a movale contact, all of which are connected together, and by a conductor 95 connected to a fixed contact 96 of a vibrating fork 97. The other cam of each pair is also providedA with a movable contact, all of which l are connected together, and by a conductor 98 joined to a` fixed contact 99 of fork 97.

These-iiiovable cam contacts are associated with fixed contacts which are connected to the various groups of eirergrzing windings. Thus, the fixed contacts associated with cams 85 areconnected to the first group of windiss ings, the right-'hand contact being connected to windings 51 and 52 of this group, and the.

left-hand contact being connected to windings 53 and 54 of this group. In the same manner, the fixed contacts of switches 86 and 87 are respectively connected tothe seccontact 101, and consequently source 100 is alternately connected through conductors 95 and 98, andthe contacts of cam 85 to windings 51 and 52, and 53 and 54 in pairs. An investigation of Fig. 2 will show that while some ofthe-teeth 42 of rotor 40 Vma be directly in front of the poles of win ings 51 and 52, others are oiset from the poles of windings 53'and 54. This construction is common with phonic motors, and a detailed description of the operation is, therefore, unnecessary. i l

The source of power driving arm 6 of distributerp'5 may be regulated t vrun slightly -slower than rotor 4() is being driven vby its operatin windings, so that the normal tendency is or brushes .11.to' move ahead of the, brushes carried by arm 6. The signal current reversals imparted to line L traverse line relay 10 in tblfziisual manner. If it be assumed that positive impulses cau-se armature 12 to"engage contact 14 and negative impulses cause the armature --to engage con-V tact 15,'each reversal of the line current from negative to positive will cause armature 12 90 to move from contact 15 to contact 14. The engagement of armature 12 Aand contact 14 will complete a circiiit from grounded source 13 to the common receiving ring in the ordinar way. A circuit will also be comy plete from source 13 through resistance 16,

and windingv 18 of leak relay 20 to ground. The energization of winding 18 causes armature 25 to leave contact 26. Until this contact is broken, however there is a path \vei-sal takes place when the correcting brushes are interconnecting one ofthe ,live segments with the common correcting ring, the circuit previously traced will 'be completed through winding 31 of correcting relay 30. The energization of winding 31 11B causes armature 35 to engage contact, and j the circuitis completed from grounded source 36 through conductor 93 to correcting electromagnet 92. Electromagnet 92 thereupon causes pawl 91 to rotate shaft 88 so that 120 the teeth of cams 85 disengage their movable contacts and the teeth of cams 86 engage theirmovablev contacts. The energizing cirr cuit from source 100 through contacts 96 and 9910i fork 97 has nowf been" changed-from 125 the first group of windings to the second grou of windings, and since, as will be note from Fig. 2, this grou is behind the first onpascompared tot e direction of rotationof rotor 40, the speed of this rotor versal in line L, which under thc conditions. Yassumedwlll be from positive to negative,

will be slightly decreased. The next recauses armature 12 to move from contact 14 t0 contact 15, which results in the energizeton of winding 19 of leak rclay20, and consequently, the withdrawal of armature .from contact 26.

A circuit is also completed from source 13 through armature 12 and contact 15, throughwinding 32 of correcting relay 30,

the energization of which causes armature' 35 to become disengaged ,from contact 37 and electroinagnet 9&2 becomes denergized, whereupon paw] 91 is 'retractedrready to engage the next tooth of ratchet wheel 89. If at the time of the next reversal, that is, from negative to positive, brushes 11 are still ahead of the brushes carried by arm 6 sutticiently to cause a live correcting segment to he interconnected with the common 3 correcting ring,,correcting electromagnet 92 will again become energized recisely in the manner hereinbefore descri ed, and cam shaft 88 will be caused4 to rotate "another step. This rotation of shaft 88 causes the teeth of cams 86 and 87 to transfer the energizing circnits, including source '100,

from the second to the third group of Windings, and rotor 40 is again slowed down. The next correction will remove the control of the energizing circuits from cams 87 to rams 85 and, since a complete Cycle of the operating windings has been made, the first group. during this transition, Willbe behind'` the third group, and the-'speed of rotation of rotor 40 will be again decreased,

While in the system disclosed corrections are made only on reversals from negative `to positive., it will be readily understoodthat by reversing the connections of line relay 10 corrections may be made on reversals from positive to negativ e. It will` also be, under,

stood that the groupingof the yoperating windiiigal may be reversed, and insteadI of a diminntifm in the speed of rotor 40 at each correction an acceleration may be provided if desired.

The invention claimed is:

"1. A synchronizing system comprising two udelwiulently driven bodies, a transmission line operatively interconnecting said bodies. a motor for driving oneof said bodies` and meanscontrolled byrcurrent impulses over said line to shift the magnetic field of said motor to' alter` the speed thereof. y t j 2. A synchronizing s rstem comprising two independently'movable bodies, a trans` lmission linc operativelyY interconnecting said bodies, a motor haring a pluralityv of electroniagnetic windings for drii'ing one of, said bodies. and a rotatory switch member controlled by current impulses over said line for controlling the'energization of: said windings to `vary the speed of their motor.

3. A synchronizing system comprising au correcting current distributer` a corrected current distributer, a transn'iission lineop.- eratively interconnecting said distributers, a motor havinga plurality of electroinagnetic` windings divided into groups for driving said correcte( distributer, an `energizing source for ai( windings, a multiple switch for associating the diifercnt groups of sai `and an electromagnet forv actuating said v switch.

In witness. whereof I hereunto vsubscribe my name this 18 day ofMay, D. 1.91r .S oHARL'EsnscRiBNERr:

d 'ns fwindings with said source, and electromag

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