GB829259A - Improvements relating to barrels for self-winding watches - Google Patents

Improvements relating to barrels for self-winding watches

Info

Publication number
GB829259A
GB829259A GB2592/58A GB259258A GB829259A GB 829259 A GB829259 A GB 829259A GB 2592/58 A GB2592/58 A GB 2592/58A GB 259258 A GB259258 A GB 259258A GB 829259 A GB829259 A GB 829259A
Authority
GB
United Kingdom
Prior art keywords
barrel
spring
self
wall
barrels
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
GB2592/58A
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.)
Institut Dr Ing Reinhard Straumann AG
Institut Straumann AG
Original Assignee
Institut Dr Ing Reinhard Straumann AG
Institut Straumann 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 Institut Dr Ing Reinhard Straumann AG, Institut Straumann AG filed Critical Institut Dr Ing Reinhard Straumann AG
Publication of GB829259A publication Critical patent/GB829259A/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

Abstract

829,259. Watches INSTITUT DR. ING. STRAUMANN R., A. G. Jan. 27, 1958 [Jan. 31, 1957], No. 2592/58. Class 139 In a barrel for a self-winding watch the auxiliary spring d, Fig. 1, forces the outer coil of the main-spring c against the surface a<SP>1</SP> of the wall of the barrel a which surface is of a steel or steel alloy treated, e.g. by chromium plating or vacuum deposition to have a hardness at least approximately equal to that of the mainspring. Where the barrel wall and the spring are of the same material the hardness of the barrel wall is different from that of the spring. If the barrel is made of aluminium or of an aluminium alloy the hard surface a<SP>1</SP> may be obtained by an electrolytic oxidation process. In a modification, Fig. 3, a hardened ring e is force fitted into the barrel. Specification 766,191 is referred to.
GB2592/58A 1957-01-31 1958-01-27 Improvements relating to barrels for self-winding watches Expired GB829259A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH829259X 1957-01-31

Publications (1)

Publication Number Publication Date
GB829259A true GB829259A (en) 1960-03-02

Family

ID=4540186

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2592/58A Expired GB829259A (en) 1957-01-31 1958-01-27 Improvements relating to barrels for self-winding watches

Country Status (1)

Country Link
GB (1) GB829259A (en)

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