GB477835A - Improvements in or relating to synchronous electric motors - Google Patents

Improvements in or relating to synchronous electric motors

Info

Publication number
GB477835A
GB477835A GB1820936A GB1820936A GB477835A GB 477835 A GB477835 A GB 477835A GB 1820936 A GB1820936 A GB 1820936A GB 1820936 A GB1820936 A GB 1820936A GB 477835 A GB477835 A GB 477835A
Authority
GB
United Kingdom
Prior art keywords
teeth
rotor
spindle
pawl
plate
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
Application number
GB1820936A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ferranti International PLC
Original Assignee
Ferranti PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ferranti PLC filed Critical Ferranti PLC
Priority to GB1820936A priority Critical patent/GB477835A/en
Publication of GB477835A publication Critical patent/GB477835A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

477,835. Alternating-current motors. FERRANTI, Ltd., and GRUNDY, E. July 1, 1936, No. 18209. [Class 35] In a synchronous motor having a non- varying field system, e.g. a permanently magnetized rotor 8 and a cyclically varying field system and having all rotating parts disposed on a spindle between the bearings, the spindle is carried by a plate 13 having a rebated periphery 15 to provide thrust against the stator teeth to hold them in correct relationship with the rotor teeth. The stator comprises two cup-shaped members 1, 3 with teeth 2, 4 and riveted to a hollow shaft 5 which is surrounded by the coil 6. The rotor 8 mounted on the spindle 7 has its teeth 9, 10 of north polarity, and its teeth 91, 10<1> of south polarity, and the spacing of the teeth is shown in Fig. 2. The upper end of the spindle is journalled in a bearing 17 carried by a sleeve 16 integral and coaxial with the plate 13, the sleeve having a slot 18 to enable a pinion 11 on the spindle to be engaged by a gear train. The plate 13 is recessed concentrically to accommodate a pivoted pawl 19 urged towards a cam 12 by a bow spring 21, the rotor being thus rotatable in one direction only. By rotating the plate 13, the pawl can be brought into such a position that if the rotor is arrested with a cam face adjacent the pawl, the rotor teeth will be correctly located with respect to the stator teeth to permit starting. A pin 23 prevents the pawl from moving too far inwards. Specification 388,739 is referred to.
GB1820936A 1936-07-01 1936-07-01 Improvements in or relating to synchronous electric motors Expired GB477835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1820936A GB477835A (en) 1936-07-01 1936-07-01 Improvements in or relating to synchronous electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1820936A GB477835A (en) 1936-07-01 1936-07-01 Improvements in or relating to synchronous electric motors

Publications (1)

Publication Number Publication Date
GB477835A true GB477835A (en) 1938-01-03

Family

ID=10108523

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1820936A Expired GB477835A (en) 1936-07-01 1936-07-01 Improvements in or relating to synchronous electric motors

Country Status (1)

Country Link
GB (1) GB477835A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450955A (en) * 1947-07-31 1948-10-12 Hansen Mfg Co Synchronous motor
US2492197A (en) * 1947-01-06 1949-12-27 R W Cramer Company Inc Small electric motor
US2692957A (en) * 1945-06-04 1954-10-26 Earl K Clark Permanent magnet type generator
US2804557A (en) * 1956-01-31 1957-08-27 Gen Time Corp Alternating-current motor
US3092743A (en) * 1959-12-17 1963-06-04 Giannini Controls Corp A. c. motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692957A (en) * 1945-06-04 1954-10-26 Earl K Clark Permanent magnet type generator
US2492197A (en) * 1947-01-06 1949-12-27 R W Cramer Company Inc Small electric motor
US2450955A (en) * 1947-07-31 1948-10-12 Hansen Mfg Co Synchronous motor
US2804557A (en) * 1956-01-31 1957-08-27 Gen Time Corp Alternating-current motor
US3092743A (en) * 1959-12-17 1963-06-04 Giannini Controls Corp A. c. motor

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