Expert: William J Perkins - 4/4/2009

Question
I have a HAC with the crossed arrows, I think it is from the 30's or 40's.  My question is:  Is there such a thing as a 15 day movement?  I can wind it and get 15 days Plus without having to wind again.  It keeps great time.  
Thanks
Tom *Boston*

Answer
Clocks come with every conceivable adaptation.  While not run of the mill a two week running time was not too unusual.  Also it is possible, by varying spring specifications, to alter the designed function of the clock.  To increase running time would require a longer and perhaps stronger spring.  Such adaptations are very hard on the clock, causing rapid and harmfull wear.   I doubt however that your clock has been so adapted.  Regards WJP