GB540574A - Improvements in or relating to friction couplings for use in spring housings - Google Patents

Improvements in or relating to friction couplings for use in spring housings

Info

Publication number
GB540574A
GB540574A GB7001/40A GB700140A GB540574A GB 540574 A GB540574 A GB 540574A GB 7001/40 A GB7001/40 A GB 7001/40A GB 700140 A GB700140 A GB 700140A GB 540574 A GB540574 A GB 540574A
Authority
GB
United Kingdom
Prior art keywords
spring
housing
coil
flange
relating
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
GB7001/40A
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Publication of GB540574A publication Critical patent/GB540574A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor
    • G04B1/185—Friction clutch between spring and spring cylinder

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)

Abstract

540,574. Slipping couplings. LANDIS & GYR SOC. ANON. April 18, 1940, No. 7001. Convention date, Feb. 15. [Class 80 (ii)] A slipping friction coupling for a spring housing, to prevent overwinding of the spring, consists of a coil 9. Fig. 2, of spring wire surrounding a flange 8 on the stationary housing 1, one end of the wire having a hook 10, Fig. 1, by which it is connected to a rotatable disc 7, to which the outer end of the spiral spring 4 is attached. If the winding movement is continued after the spring 4 is fully wound, the coil 9 slips on the surface of the flange 8. The coil may be an expanding spring bearing against the cylindrical wall 3 of the housing, or it may surround the spindle 5 of the spring 4. The parts may be protected against wear by a facing of synthetic resin &c. or the housing may be formed of such material.
GB7001/40A 1940-02-15 1940-04-18 Improvements in or relating to friction couplings for use in spring housings Expired GB540574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH540574X 1940-02-15

Publications (1)

Publication Number Publication Date
GB540574A true GB540574A (en) 1941-10-22

Family

ID=4519046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7001/40A Expired GB540574A (en) 1940-02-15 1940-04-18 Improvements in or relating to friction couplings for use in spring housings

Country Status (1)

Country Link
GB (1) GB540574A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1086637B (en) * 1956-02-09 1960-08-04 Kinoshita & Co Ltd Electromotive spring winding for timing devices
US5573198A (en) * 1995-02-02 1996-11-12 Pitney Bowes Tape roll rewind device and method for rewinding tape on a tape roll

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1086637B (en) * 1956-02-09 1960-08-04 Kinoshita & Co Ltd Electromotive spring winding for timing devices
US5573198A (en) * 1995-02-02 1996-11-12 Pitney Bowes Tape roll rewind device and method for rewinding tape on a tape roll

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