This New Bergeon Stud Holder is top of the line. A very helpful tool when when fitting a new hairspring stud. Dimensions: 40 x 46 mm. ... Very simple to use. Can be fixed inside a vice.
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www.ofrei.com/page_213.html
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Untangling a watch hairspring ... From the inside of the box, glue watch paper down to cover the hole you just created. Once that dries, you can take a punch and make a whole just large enough to pass the collet through. This gives you a table to work on as you pass the hairspring through that hole a little at a time.
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onlineclockbuilding.com/HAIRSPRING/carpenter.html
onlineclockbuilding.com/HAIRSPRING/carpenter.html
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The outer end of the Hairspring is fixed into a Stud and its inner end into a Collet. In older watches this Stud was fixed in place and the beat of the watch had to be adjusted by moving the length of the spring carried within stud hole or by adjusting its position relative to the balance at the Collet. ... Inside a WatchPower;
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hiro.alliancehorlogere.com/en/Under_the_Loupe/The_Hairs...
hiro.alliancehorlogere.com/en/Under_the_Loupe/The_Hairspring
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The base 3 also has a lateral extension forming the base of the stud 5 and a rim ... and its last turn is also free towards the inside, with the bend 10 being .... Hence there is no risk that the stud 5 itself and the hairspring 2 will ...
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www.patentstorm.us/patents/3956881/description.html
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If the barrel drum has an inside radius R and a barrel arbor radius r, ..... a collet 440, a stud 450, and a regulator 460, as shown in FIGS. 13 and 14. ...
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www.patentstorm.us/patents/6843594/description.html
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The rim is bi-metallic, being steel inside and brass outside, and cut through at two opposite points. Brass is more affected by heat than steel, and in a rise of the temperature the outer brass will lengthen more than the ... Sometimes when a flat hairspring is pinned in its collet and in its stud it will not lie flat.
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www.oldandsold.com/articles22/watch-repair-11.shtml
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clamping the hairspring on the regulator subclass 121; clamping the hairspring on the arbor subclass 135) [G04B 1/18] 15 ...Friction clutch between spring and spring cylinder (friction transmission ... electrically driven subclass 465) [G04B 17/30] 135 .Component parts or constructional details, e.g., collet, stud, etc.
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www.ibiblio.org/patents/class/CLASS968a.html
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Upper frame bridge, 1b. Lower frame bridge, 2. Pivot wire, 3. Hairspring stud, 4. Jewelled bearing, 5. Hollow tube, 6. Hairspring, 7. Mounting post, 8. Regulator with disc, 9. Banking pins, 10. Roller pins, 11. Safety roller, 12. Balance Wheel, 13. Hairspring collet, 14. Upper frame hook, 15. Lower frame hook, 16.
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www.scribd.com/doc/14252809/Clock-Escapement-Drop-Lock
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The hairspring should be free inside this piece. As I stated before, the terminal end of the hairspring is glued to the stud marked "B". ...
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forums.watchuseek.com/showthread.php?t=173822
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