GB1394844A - Speed control mechanism - Google Patents

Speed control mechanism

Info

Publication number
GB1394844A
GB1394844A GB5084473A GB2897772A GB1394844A GB 1394844 A GB1394844 A GB 1394844A GB 5084473 A GB5084473 A GB 5084473A GB 2897772 A GB2897772 A GB 2897772A GB 1394844 A GB1394844 A GB 1394844A
Authority
GB
United Kingdom
Prior art keywords
post
wheel
shaft
connection
limb
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
GB5084473A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1394844A publication Critical patent/GB1394844A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/08—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B is a disc with a flat or approximately flat friction surface
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Structure Of Transmissions (AREA)

Abstract

1394844 Change-speed friction gear GENERAL ELECTRIC CO 1 Nov 1973 [1 Nov 1972] 50844/73 Heading F2D A wheel 20, e.g. a rubber-rimmed idler for transmitting drive from a stepped shaft 28 to a turntable rim 34 of a record-player, is rotatably mounted at 22 on a member 14 and positioned for different speeds by mechanism comprising a member 6 consisting of spaced long and short limbs 10, 8 joined by a portion 12, a fixed post 4 depending from a base-plate 2 and constituting a pivot for the member 6, a pin 24 extending radially from the post and coacting with a cam slot (not shown) in the portion 12 so that as the member 6 is turned about the post by a manually operated speed-selector rod 19 it is also moved axially along the post, and a pivotal connection 16 between the limb 10 and the member 14 which is biased by a tension spring 29 and has an arcuate slot 18 through which the post passes. As shown, the wheel 20 is in contact with the smaller diameter of the shaft 28. When the rod 19 turns the member 6 in the clockwise direction about the post, the connection 16 causes the wheel 20 to be withdrawn from the shaft 28 and turntable rim whilst the pin 24 and cam slot cause the wheel to be moved towards a position in alignment with the larger diameter of the shaft 28, and as the connection 16 passes a dead-centre position relatively to the post and spring, the wheel is pulled by the spring back into engagement with the turntable rim and shaft 28. Movement past thedeadcentre position may be resisted by interengaging dimples formed on the member 14 and limb 10.
GB5084473A 1972-11-01 1972-06-21 Speed control mechanism Expired GB1394844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00302646A US3847027A (en) 1972-11-01 1972-11-01 Speed control mechanism

Publications (1)

Publication Number Publication Date
GB1394844A true GB1394844A (en) 1975-05-21

Family

ID=23168638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5084473A Expired GB1394844A (en) 1972-11-01 1972-06-21 Speed control mechanism

Country Status (5)

Country Link
US (1) US3847027A (en)
BR (1) BR7308476D0 (en)
DE (1) DE2354177A1 (en)
FR (1) FR2204847A1 (en)
GB (1) GB1394844A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393727A (en) * 1980-03-11 1983-07-19 Optimetrix Corporation Friction drive
US4487067A (en) * 1983-08-05 1984-12-11 The United States Of America As Represented By The Secretary Of The Army High speed spin test device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951386A (en) * 1956-05-04 1960-09-06 Philips Corp Record player transmission
US2925737A (en) * 1957-02-21 1960-02-23 Gen Ind Co Plural-speed phonograph turntable drive mechanisms
US2961883A (en) * 1958-12-12 1960-11-29 Gen Ind Co Phonograph drive mechanism

Also Published As

Publication number Publication date
US3847027A (en) 1974-11-12
FR2204847A1 (en) 1974-05-24
DE2354177A1 (en) 1974-05-16
BR7308476D0 (en) 1974-09-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee