Search results

  1. K

    Hartford Watch Co.

    The Hartford Watch Co. (Swiss fake) was marketed primarily by Sears...FWIW. The movement for the 18s is shown in the Sears Roebuck catalog for 1894. It sold for less than half as much as the similarly cased items Sears sold with Hampden, Waltham or Elgin movements at the customer's discretion.
  2. K

    Waltham 8-Day Chronometer Watches Mysteries

    I get that. But, I would argue that the archaic use of the detent and fusee does not automatically make a superior tool for the job. Especially, when you imagine what happens to reliable running let alone timekeeping if you remove the "crutch" of gimbal mounting for fussy "Chronometers". (So...
  3. K

    Waltham 8-Day Chronometer Watches Mysteries

    Ads for the Waltham 8-day chronometer circa WWI, although one dates to 1920. To me, it is weird that even Whitney glosses over the FACT that Waltham, not Hamilton, was the first to produce chronometers in America. Like it or not, American know-how and willingness to go a different way, by both...
  4. K

    Waltham 8-Day Chronometer Watches Mysteries

    This is perhaps the hardest version of a W8D Chronometer to find. Produced in 1940, it is a 15-jewel model 1926, with sub-seconds hand, conel hairspring, and correlator balance, which was converted to chronometer status (drafted) for duty in WWII by adding a whiplash micrometer regulator and...
  5. K

    Waltham 8-Day Chronometer Watches Mysteries

    Wisty, I forgot to mention something you probably already knew. Your W8D was issued to the British navy at some point, hence the so-called "broad arrow" markings.
  6. K

    Waltham 8-Day Chronometer Watches Mysteries

    Wisty, you have one of those "interesting" 8-day Walthams I like so much. I looked up the serial number on Pocketwatch Database and it comes up as a 1910 model made in 1910. Most of what I read and have learned about these watches runs to descriptive terms like "workhorse" and "versatile", which...
  7. K

    Waltham 8-Day Chronometer Watches Mysteries

    Excerpts from "A New Chronometer":
  8. K

    Waltham 8-Day Chronometer Watches Mysteries

    I have a traditional Marine Chronometer as well as what is likely the best mechanical chronometer ever, a Hamilton Model 22 (complete with interesting history and provenance) but it's the Waltham that fascinates me most. I think that's because there is surprisingly little detailed information on...
  9. K

    Chronometry: Roth Bros.

    Ned, You realize the papers are for a 37-size 8-day, not the movement shown in your pictures - right?
  10. K

    Waltham Patent Compensating Balance (Woerd)

    Apparently, the so-called "ovalising" balance of the Hamilton marine chronometer (on the right) was/is at/near the best solution.
  11. K

    Waltham Patent Compensating Balance (Woerd)

    De Fazio's article is not a quick or easy read - but the takeaway for me was the large weights were indeed responsible for most issues with Woerd's balance. I find it of great interest that 'harmony' with the hairspring has so much to do with it as well. Since monometallic balances and...
  12. K

    Waltham Patent Compensating Balance (Woerd)

    Clint - sorry for the confusion - Church's patent was for the manufacture of a compensating balance...not the design of one.
  13. K

    Waltham Patent Compensating Balance (Woerd)

    Clint - perhaps the subsequent patent balance (US Pat#474590, May 10, 1892, D. Church) did the job better and cheaper? By then Woerd had moved on, but it's curious that he never refined or attempted to improve this sawtooth type balance. Do you happen to have a link to Tom DeFazio's bulletin...
  14. K

    Waltham Patent Compensating Balance (Woerd)

    Dave - that balance doesn't look like the 'sawtooth" type. The rivets at 90-degrees might have been a modification of a conventional compensating balance to try and emulate the so-called advantages of the Woerd sawtooth...just sayin'! Also - could it be that the reason for the replacement of the...
  15. K

    Waltham Patent Compensating Balance (Woerd)

    Gmorse - I suspect that nuts on studs was not a clearly superior set-up and just as clearly screws were cheaper. Chris - READ the October 82 bulletin article on this! There were tests. Woerds balance did work better than contemporary solid or compensating balances. The "sawtooth" notion...
  16. K

    Waltham Patent Compensating Balance (Woerd)

    All well and good - but WHY wasn't it used more commonly? Was it defective in execution, too expensive to manufacture, or what? Also - aside from the sawtooth rim, was the use of nuts on studs a dead-end, relative to the common balance screws we see. I also noticed a later Waltham patent (US...
  17. K

    Waltham Patent Compensating Balance (Woerd)

    More or less happened upon this patent whilst searching for others and wondered if/when it was actually used? The design is by Charles Woerd (US pat#203976, dated May 21st, 1878) and it sure seemed like a shrewd technical treatment of issues with heat and cold compensation "in the day". The...
  18. K

    Patent Regulator Catalog Your Favorite

    Let me tack a question onto this thread. Can experts out there please comment on something that puzzles me? For instance: I have some Columbus 18s watches which sport two different patent regulators. One, although called a "Columbus Spring" on another website, is basically a variation of the...

Forum statistics

Threads
176,402
Messages
1,544,018
Members
53,286
Latest member
ferkor
Encyclopedia Pages
1,064
Total wiki contributions
3,031
Last update
-