GB609950A - Electric motor control systems - Google Patents
Electric motor control systemsInfo
- Publication number
- GB609950A GB609950A GB9327/46A GB932746A GB609950A GB 609950 A GB609950 A GB 609950A GB 9327/46 A GB9327/46 A GB 9327/46A GB 932746 A GB932746 A GB 932746A GB 609950 A GB609950 A GB 609950A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- motor
- coil
- drum
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Control Of Multiple Motors (AREA)
- Stopping Of Electric Motors (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
609,950. Control of motors. IGRANIC ELECTRIC CO., Ltd. March 26, 1946, No. 9327. Convention date, March 26, 1945. [Class 38 (iii)] Travelling to predetermined limits.-An electric motor control system comprises a rotary drum, which, for example, forms part of a tyrobuilding machine, an electric motor for rotating said drum, reactor means including a part driven by said motor and moving in a fixed relation to said drum to vary the reluctance of said means for a varying reactance value attaining a maximum in a given rotary position of said drum, and control means rof effecting running of said motor and for effecting automatic stopping of said motor, said control means including relay means operated in response to a predetermined reactance value of said reactor means for initiating stopping of said motor. An electric motor M driving a drum D is stopped when a U-shaped member 1 of magnetic material, which is carried by an arm on the drum-shaft, straddles a stationary magnetic core 4 which is provided with a coil 5, thereby increasing the reactance of said coil to effect de-energization of a relay in the motor control circuit. Similar operation obtains when the member 1 coacts with a core 4a and coil 5a. The motor M; which may be of the directcurrent shunt-wound type, is supplied from the mains L1 and L2 through contacts of a switch 10 which also affords dynamic-braking through a resistor r. The coil of the switch 10 is supplied from alternating-current mains L3 and L4. Upon operation of a push-button switch 18 a relay 16 is closed to energize a relay 14, through contacts of a selector switch 19, and to close the main switch 10. Closure of the relay 16 short-circuits the coils 5 and 5a. The relay 14 closes a self-maintaining circuit independently to the relay 16 which is de-energized when the contact of a time-delay relay 17 opens. The release of relay 16 interrupts the short-circuit of the coil 5a to place it in series with the coil of the relay 14 which is released to open the main switch when the member 1 straddles the core 4a. When the selector switch 19 is moved to an alternative position, the reactor coil 5 and a relay 15 become effective. Additional stopping-positions of the motor may be provided. The selector switch may afford a wide variety of control-sequences.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US609950XA | 1945-03-26 | 1945-03-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB609950A true GB609950A (en) | 1948-10-08 |
Family
ID=22032998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9327/46A Expired GB609950A (en) | 1945-03-26 | 1946-03-26 | Electric motor control systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB609950A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1145258B (en) * | 1957-02-27 | 1963-03-14 | Siemens Ag | Contactless proximity switch with downstream safety proximity switch of the same type |
-
1946
- 1946-03-26 GB GB9327/46A patent/GB609950A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1145258B (en) * | 1957-02-27 | 1963-03-14 | Siemens Ag | Contactless proximity switch with downstream safety proximity switch of the same type |
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