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940's Hamilton regulator patent ? "Click" to Login or Register 
Gerald Zimmermann
posted
Has someome information about the patent regulator used in the early 18s full plate Hamiltons ?

It is the one with the round shaped retaining spring and the long index arm. (Goldwaith's patent ?)

I'am searching for information about the patent (name, date or number) !

Thanks
Gerald
 
Posts: 742 | Location: Wertheim in Germany | Registered: February 21, 2009
Gerald Zimmermann
posted
Stop searching !

Goldthwait's patent regulator

US 427072

Gerald
 
Posts: 742 | Location: Wertheim in Germany | Registered: February 21, 2009
Lindell V. Riddle
IHC President
Life Member
Picture of Lindell V. Riddle
posted

That regulator was in constant use on all 18-size Hamiltons from the beginning in 1892 through the 1927 end of 18-size production.


Here it is on 552983 an uncommon Model 944 Hamilton...

 
Posts: 10553 | Location: Northeastern Ohio in the USA | Registered: November 19, 2002
Tom Brown
IHC Life Member
Site Moderator

Picture of Tom Brown
posted
Here is the patent for those interested.

01
 
Posts: 5107 | Location: New Mexico in the USA | Registered: January 27, 2007
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