USRE14610E - Turing - Google Patents

Description

S R R O M. .M T E T m &S I- 0 m MN Mm S A K APPLICATION FILED JAN. 31 I918.

Re'issued Mar. 11,1919.

INVENTORS Karl Afi/mmon 8:

.WITNESSES Hurd T. Morris.

- ATTORNEY UNITED STATES PATENT carton.

KARL A. SIMMON, OF EDGEWOOD PARK,- AND Hem) T. MORRIS, 011 ;WILKINSTBURG,

rENNsYLvr-wm, ASSIGNORS T0 WESTINGHOUSE ELECTRIC 1m) "MANUFAC- TUBING. COMPANY, A CORPORATION or PENNSYLVANIA.'

co vTRoL SYSTEIVL 5 Specification of Reissued Letters Patent.

reissue filed January 31,1919. Serial No. 274,375.

To all whomz't may concern: i

Be it known that we, KARL A. Summer, a citizen of the United States, anda resident of Edgewodd Park, in the county of Allegheny and State of Pennsylvania, and Hum) T. Mounts, a citizen of the United States, and a resident of WVilkinsbLu-g, in the county of i-kllegheny and'State of Pennsylvania, haye invented a new and useful Improvement 1n Control Systems, of which the following is a specification.

Our invention. relates to control systems for electric motors and particularly to systems for controlling motors that are adapted for use .in electric-railway and similar vehicles.

One ob ect of our invention-1s to provide a system, ofjthe above-indicated character,

wherein the-energizing circuit for plurality of electrically-gove-rned switches shall be positively broken at the instant the masterscontroller handle is moved a prede- ",termine d distance toward the off position.

will be hereinafter set forth.

Another object of our invention is to minimize the burning the contact members on an auxiliary segmentof the controller, as

' Heretofore, it has been the custom, in control systems embodying a slip-segment controller of a familiar type. to interrupt the energizing circuit for a plurality of electrieally-governed switches at the contact members on a,.frictiwally-engaged segment of the controller. It will be observed that the ln -err ptlon f an inductive circuit will cause an arc to be maintained between the cooperating contact members, ancLjthat a positive interruption of the energizing circuit, at the inst-ant the contact members are separated, cannot be made. The; are occasioned by the interruption of this inductive circuit causes burning cf the contact members;as will be unde stood.

According to our invention, we provide a system wherein av frictionally-engaged controller segment-is used to complete acireuit instead of to interrupt it. the energizing circuit of the motor-controlling switches is positively interrupted;

through the medium of a suitable relay, at theinst-ant the a predetermined olf position, and

controller-handle is moved slight degree toward the the burning of the contact In" this manner members on the friotionally-engaged con troller segment is minimized.

' the unit switches as the controller is moved through its successive forward positions. v Referrlng to Fig. v1 of the drawing, a.

Reissued Mar. 11, 1-919. Original No. 1,289,284, dated December 31,1918, Serial No. 59,833, filed November 5,1915. Application for supply-circuit conductor 1, receiving energy from any suitable source, (not shown) and aretnrn cn cuit conductor 2- are adapted to deliver energy to a plurality of electric mo- 1 tors 3 and 4:, respectively, havin armatures A1 and A2 and field windings F1 a'nd F2, through a line switch LS, a plurality of elect-rically-governed circuit-arranging switches M, G, l and S and a plurality of electricallyv controlled resistaiic'e-govcrning switches R1 and It) that are adapted to respectively short-circuit resistors 5 and 6.

The several switches R1, R2,

- and LS are llllIStl'l ted as being respectiyely operated by means of suitable electromagnets or actuating coils that are -corres )o1 1dmgly lettered 1n Flg. :2.

The several electromagnets 7, LS, M, S,

P, R1, R2 and G (Fig. 2) are energized from a suitable source, such as a battery 8, through circuits that are arrangetl and govef ned bya master controller 9 and by a pin 'ality of interlocking contact members that arerespectively marked LS in. R1 out, P

out, Gout and Sent. These interlocking contact members are of a well-known type and are adapted to assume an in?" or anout position according to the corresponding positions of their respective switches.

The master controller 5) comprises a. main rotatable drum l0 and an auxiliary disk 11.

Then'iain drum 10 isfproviided with a con ducting; segment 12, a suitable operating handle 13 and an upwardly projecting cylindrical portion 19 around which'the auxiliary disk 11 disposed. The'main conducting segment 12 is adapted. to cooperate with a plurality of stationary contact members 14-. 13. 16, 17'. and 1S.

etteryr three-g5 the r 5 eenductingegmeht 12;

e reeihentl'y' eontec in'embe "membe of suitable Spring te '1 dis uthe disk member 11 an the main drum. is efleeted.

When the disk member 11 1s mtjv 1., i uctors 29 and rela switch members 28 27 t the hegative'terminal B of the either direction, a projeetng member there battery 8.; It will be noted that, as soon as a3gs-t1ie trhisreet utshztp'elfietop fl t Ozrw thl switch-1h 1 he poyelggtertt of the-d'iek to an a 01 that pre eiwibly ''orr' 011 the controller 456K3 miljwm (1f.

with a conducti complete a familiar. hold be elosed in *th' next thout interrupting the circuit of the switch coil LS "le to furthfflceeiere erupt is" 51 's r Controller g gemen thestopfli th m timw qactuetting teeill F :a 105 A 01 tit t m ri be sfi W Wa'rd movement of the es b sh s the s'QiT yu heneby nte l ugpts the operation of the system may f6 es io lqwsszilll e-t wt tw eettli ler l. KQL, dlca ectib is closed, its interlock ie ztleo r I i effect the'opening of certain of said switch ing devices under predetermined operating conditions'of said controlling means.- I

' 2. In a' control system, the "combination -withan electric motor, a plurality of electrically-controlled switches for governing the operation thereof, acontroller for gov: erning the operation of said switches, .and an auxiliary control circuit associated wvith said controller, of circuit-closing means as:-

sociatedwith said controller for closing said auxiliary'ci'rcuit to effect the opening of all of said switches if the controller is moved backwardlyv a predetermined slight degree,

3. In. a control system, the combination withan electric motor, a plurality of. electrically controlled switches for governing the operat ong thereof, and a contro ling, means for said switches, of circuit-closing means' associated with said controlling means for deenergizing certain of said switches-under controlling-means.

fl. In a control system, the combination" with an electric motor, a plurality of elecoperation thereof,; a controller for selectively governing the energization of said switches wvhen moved in a forward direc-. t1on,. and an electro-responsive device, of

means for completing a circuit through said electro-responsive device when the controller is moved backwardly a predetermined slight degree to deenergize said electrically-coir trolled switches. V

5. In 8. 001113101 system, the combination trically-controlled switches for governing the operation thereof, and a controller for governing the operation of said switches. of

switches, and an auxiliary circuit, of a circuit-closing means associated-With said con cuit if said controller is moved apredetermined slightdegree toward its off position. 7. In a control system, the combination with a motor, a plurality of electrically-0on t-rolled switches for governing the operation thereof, and a controller for governing theoperation of said switches, of a circuit-closing means associated with said controller for establishing an auxiliary control circuit to release certain of said electricallv controlled and an auxiliary, control circuit associated I .said' auxiliaryfcircuit to interrupt the motor predetermined operating conditions of said,

tricallyf-controlled switches for governing the with an electric motor, a plurality of electrolling means for closing said auxiliary c-irextending therethrough, a' plurality of elec- .trically-controlled' switches for governing the operation thereof, a controller for gov-- erning the operation of said switches, and an auxiliary control circuit associatedwith said controller, of a circuit closing.means for ,closing said auxiliary circuit to interrupt the main circuits if'the controller is moved backwardly a predetermined relatively slight degree. '9. In a system of control, the combination with an electric motor, a plurality ofelectri- Cally-controlledswitchesfor governing the operation thereof, a contr'ollerfor completing the energizing circuits for said switches,

S5 with said controller, of means associated with said controller for-maintaining a cir-. cuit through said motor during the forward movement of the controller and for closing circuit when the controller is moved back Wardly a single notch.

'10. In a control system, the combination with an electric motor, and a plurality of electrically controlled switches for governing the operation thereof, of a controller for controlling 'the operation of -s aid switches and comprising a main contact-bearing member and an auxiliary contactbearing' member, and circuit-closing means associated with said auxiliary contact bearing" member for deenergiz'ing certain of said switches if the main drum of the controller is moved backwardly a predetermined slight degree.- f i i i I 11. In a control system, thecombination with a motor, amain controller drum for governing the acceleration of said motor, an auxiliary control circuit, and means controlled by said auxiliary circuit for opening i the motor circuits, of an auxiliary drum associated with said main controller drum. and

embodying means for closing said auxiliary switch to release all operated switches when the controller is moved in a reverse direction a predetermined slight degree. 7 13; In a system of control, the combina tion with a motor, control means for governing the operation of said motor, a controller for governing the operation of said means,

and an electricallyroperated switch, of means a ssoci a ted with said controller for operating said; switch to" rglease s aidncont rol means when the controllerjis mdved'in in reverse 1 clire et ion a pjrgd e t ermingd sligl mdegrgg. 14,:In; a system oi' c onti'ol',th' 'conpbilm 1 tion with a motor, a CO I I CI'OHGIT f0I' ;g0Ye1 I1 ing'thepperation of said motor, and anele'ch triggxlly-operated switch, of means associafted,

with said ofitroller for; bps-rating said 0 switch to break the inotqr cit- Qui t when the contrbllef mox'ied in aTeversg di rection a. predetermined "sligh t degree. 1'

fIn tes 'ymony- Whe'reo'L-fWe have. hereunto P HURDTQ MQBRIS- IKARL A SIMMONJ

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