GB368320A - Improvements in and relating to brush shifting mechanism for dynamo electric machines - Google Patents

Improvements in and relating to brush shifting mechanism for dynamo electric machines

Info

Publication number
GB368320A
GB368320A GB35480/30A GB3548030A GB368320A GB 368320 A GB368320 A GB 368320A GB 35480/30 A GB35480/30 A GB 35480/30A GB 3548030 A GB3548030 A GB 3548030A GB 368320 A GB368320 A GB 368320A
Authority
GB
United Kingdom
Prior art keywords
brushes
slot
handle
bolt
starting
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
GB35480/30A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB368320A publication Critical patent/GB368320A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/045—Discs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/18—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having displaceable main or auxiliary brushes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

368,320. Controlling alternating current commutator machines. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hull, J. I. ; 1338, Dean Street, Schenectady, New York, U.S.A.) Nov. 25, 1930, No. 35480. Convention date, Nov. 27, 1929. [Class 35.] Relates to shifting the brushes of a motor of the Schrage type, such as that described in Specification 25358/11, [Class 35, Dynamoelectric generators &c.], to regulate the speed and consists in keeping one brush stationary while the other is moved to a certain distance from it and then moving them in opposite directions with the same angular velocity ; it is stated that the power factor is thereby maintained at a value approaching its maximum over a considerable portion of the speed range. For this purpose the brushes 14, 15 are mounted on a rotating yoke 18 and the brushes 16, 17 on a yoke 19. The yokes 18, 19 are connected by links 22, 23 to a bolt 26 sliding in a slot C, D, E in a fixed plate 31. The portions C, E of the slot are radial and the portion D is approximately the arc of a circle. When the bolt 26 is in the middle of the portion D of the slot the pivot 24 of the link 22 is at the centre of this portion and the brushes are in position for synchronous running. As the bolt 27 moves through the portion D the brushes 14, 15 remain stationary and the brushes 16, 17 move ; as the bolt moves through the portions C and E of the slot the brushes move in opposite directions with the same angular velocity. To give an exceptionally high or low torque at starting the slot C, D, E is formed with an extension F, Fig. 8, at one end formed as the arc of a circle the centre of which is at one of the pivots 24 when the brushes are in the corresponding position, whereby one of the brushes is given a movement apart from the other. The handle 35 which operates the bolt 26 and links 22, 23 may also operate the starting switch 41 as shown. To the handle 35 may be pivoted a handle 34 arranged to engage with a rack 39 and connected to the handle 35 by a spring 37, so that when the handle 35 is released after the proper manipulation for starting it is automatically brought into the position appropriate to any desired speed.
GB35480/30A 1929-11-27 1930-11-25 Improvements in and relating to brush shifting mechanism for dynamo electric machines Expired GB368320A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US368320XA 1929-11-27 1929-11-27

Publications (1)

Publication Number Publication Date
GB368320A true GB368320A (en) 1932-02-25

Family

ID=21890893

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35480/30A Expired GB368320A (en) 1929-11-27 1930-11-25 Improvements in and relating to brush shifting mechanism for dynamo electric machines

Country Status (2)

Country Link
FR (1) FR368320A (en)
GB (1) GB368320A (en)

Also Published As

Publication number Publication date
FR368320A (en) 1906-11-24

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