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mainspring    
n. 主发条;主要原因

主发条;主要原因

mainspring
n 1: the most important spring in a mechanical device
(especially a clock or watch); as it uncoils it drives the
mechanism

mainspring \main"spring`\, n.
The principal or most important spring in a piece of
mechanism, especially the moving spring of a watch or clock
or the spring in a gunlock which impels the hammer. Hence:
(Fig.) The chief or most powerful motive; the efficient cause
of action; as, the mainspring of action.
[1913 Webster]


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  • Help with a mainspring winder - NAWCC Forums
    I am using a mainspring winder for the first time I am working on an Ansonia I have come across two problems that I cannot figure out I have seen several videos on how to use the winder, but none on how to remove the mainspring clamp after the spring has been placed back into position One problem I am having is I cannot fully wind the spring
  • Mainspring letdown - NAWCC Forums
    It stopped again last month right on schedule Given how sensitive these clocks are to power fluctuations, and how slowly the mainspring turns(2 1 2 or so months per turn) it seems like this light viscosity is working fine so far with this relatively strong mainspring The clock has been running 5 years since the service
  • Seth Thomas Main Spring Replacement on a #124 movement
    Hello all, My new purchase today was a great Seth Thomas Westminster chime tambour clock with the #124 movement The only problem it has is the main spring for the time is broke I have the old main spring cup with the broken spring in it removed from the clock right now My next problem is
  • Modern mainsprings for motor barrel | NAWCC Forums
    actually that's not quite correct one of the problems that we run into and watch repair is evolution of watches and parts In the early days of American pocket watches over a relatively short time span things evolve and that we end up with new parts So motor barrel is a type of a barrel DB is a type of an end of a mainspring
  • Can Mainsprings Be Rejuvenated? - NAWCC Forums
    The "set" mainspring thing is pretty much a myth Same as the "wound to tight" thing I'm with Bangs, it would take at least an oven with a good thermocouple and a lot of experience with the same type spring to make any improvement
  • Need a lead for swiss watch mainsprings please | NAWCC Forums
    Hi Dave, What's the escapement in this watch? If your watch is a fairly high grade lever, (which many of these twin-train movements were), you might find that a 0 19mm thick spring is too strong, perhaps leading to rebanking, and that the watch will run well on a thinner spring, say, 0 17mm or even 0 16mm, if you can find one of that thickness that's long enough
  • Mianspring Winder Robbins Type | NAWCC Forums
    Then put the mainspring in the winders barrel (be sure to have it winding in the right direction for the mainspring barrel Then insert the crank handle into the inner coil of the spring, using the part of the winding post that fits it best Wind the spring while running it through a clean lint free oiled cloth or watch paper, using mainspring oil
  • Oiling main spring? - NAWCC Forums
    The mainspring of your Ansonia and every "marine timepiece" is the "muscle" that powers the lever and balance It, the mainspring, must absolutely and positively deliver force to the wheel train smoothly over the designed period of thirty hours or eight-days
  • Hamilton 992 and 992E | NAWCC Forums
    The 1947 Hamilton parts catalog calls for an "old" part #317 Mainspring for the Model 972 Two strengths of MS are listed as appropriate; 18mm 19mm The "new" part numbers are 718041 for the 18 and 718042 for the 19 The 718041 is a JA-207 and the 718042 is a JA-206 in the current mainspring supply catalogs
  • Main spring for Junghans - NAWCC Forums
    What's important is that the new mainspring is properly installed AFTER carefully cleaning the new spring of all the rust preventive grease and then lubricating the new one with a proper lubricant Your clockmaker MUST have a proper mainspring winder for inserting the newly cleaned and lubricated mainspring in the barrel





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