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GB758514A - Improvements in or relating to multi-turn control devices - Google Patents

Improvements in or relating to multi-turn control devices

Info

Publication number
GB758514A
GB758514A GB26653A GB26653A GB758514A GB 758514 A GB758514 A GB 758514A GB 26653 A GB26653 A GB 26653A GB 26653 A GB26653 A GB 26653A GB 758514 A GB758514 A GB 758514A
Authority
GB
United Kingdom
Prior art keywords
wheel
gear wheel
cam
movement
meshing
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
GB26653A
Inventor
Eric Clay Fielding
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB26653A priority Critical patent/GB758514A/en
Publication of GB758514A publication Critical patent/GB758514A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/04—Stops for limiting movement of members, e.g. adjustable stop

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Gear Transmission (AREA)

Abstract

758,514. Stopping shafts in predetermined positions. STANDARD TELEPHONES & CABLES, Ltd. Jan. 5, 1953, No. 266/53. Class 80(2) [Also in Group XXXIV] A mechanism for positively stopping a shaft in a predetermined position comprises a pair of meshing gear wheels, cam members attached to each gear wheel and sweeping overlapping circles so as to interfere mutually in one position but not in adjacent positions, one cam member being movable diametrically of its gear wheel, and a positive stop member brought into position by movement of said one cam to stop said shaft after a predetermined number of revolutions. As shown "exploded" in Fig. 1 an input shaft 1 drives a gear wheel 2 and a meshing gear wheel 6, a further gear 3 and a meshing output gear wheel 5. After a predetermined number of revolutions a cam member 16 secured to the wheel 6 will make contact with a cam member 15 diametrically slidable on the wheel 2 against a spring 13. A portion 17 of the member 15 will then project and come into contact with a stop 24. Springs 20 allow a slight angular movement of the member 24 to reduce shock, but the movement is limited by a stationary pin 22 engaging a slot 21. In a modification two angularly spaced cams are provided on the wheel 6.
GB26653A 1953-01-05 1953-01-05 Improvements in or relating to multi-turn control devices Expired GB758514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26653A GB758514A (en) 1953-01-05 1953-01-05 Improvements in or relating to multi-turn control devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26653A GB758514A (en) 1953-01-05 1953-01-05 Improvements in or relating to multi-turn control devices

Publications (1)

Publication Number Publication Date
GB758514A true GB758514A (en) 1956-10-03

Family

ID=9701326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26653A Expired GB758514A (en) 1953-01-05 1953-01-05 Improvements in or relating to multi-turn control devices

Country Status (1)

Country Link
GB (1) GB758514A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2874809A (en) * 1957-05-17 1959-02-24 Gen Time Corp Rotation controlling device
US2905009A (en) * 1955-08-15 1959-09-22 Thompson Prod Inc Mechanical stop system
US3005133A (en) * 1958-02-12 1961-10-17 Jr Carroll L Key Drive for indicating means and the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905009A (en) * 1955-08-15 1959-09-22 Thompson Prod Inc Mechanical stop system
US2874809A (en) * 1957-05-17 1959-02-24 Gen Time Corp Rotation controlling device
US3005133A (en) * 1958-02-12 1961-10-17 Jr Carroll L Key Drive for indicating means and the like

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