The story
Early history
Hamilton succeeded three watch firms manufacturing timepieces in the same facilities in Lancaster, Pennsylvania, U.S., including the Adams & Perry Watch Manufacturing Company, Lancaster Watch Company Ltd., Lancaster Watch Company and the Keystone Watch Company. The precursor to the Hamilton Watch Co., the Lancaster, Pennsylvania, based Keystone Standard Watch Co., was started by Abram Bitner in 1886 with the purchase of Lancaster Watch Company's factory. Lancaster, then Keystone manufactured watches featuring a patented "Dust Proof" design that used a small mica window to cover the only opening in the plate of the movement. This patent represents Hamilton’s transition from simple dust covers to integrated sealed case engineering and is often cited as a foundational U.S. industrial solution to dust & moisture ingress before modern gasket standards. Keystone existed until 1891 when the company was sold to Hamilton Watch Company.
The Hamilton Watch Company was established in 1892 after Keystone Standard Watch Company was purchased from bankruptcy. Aurora Watch Company of Illinois also merged into Keystone during the same year. The name of the new company was originally to be "Columbian," but when it was discovered the Waterbury Watch Company had trademarked that name, a meeting of stockholders was called in November 1892 and a new name selected. The company was named after Andrew Hamilton, a Scottish-born attorney who laid out and founded Lancaster County, Pennsylvania, and was the original owner of the Lancaster site on which the factory was situated.
During the expansion of the railroads in the U.S., Hamilton maintained over 56% of the market. Railroads purchased all of Hamilton's production. The company manufactured wristwatches as the market switched from pocket watches to wristwatches after World War I. During World War II, Hamilton retooled its business model to serve the military, dropping its consumer products.
The Hamilton Watch Company was housed on a 13-acre (53,000 m2) complex in Lancaster. Hamilton took possession of Aurora Watch Company's machinery shortly after incorporation.
The first watch made under the Hamilton name was an 18-size 17-jewel pocket watch in 1893. During Hamilton's first fifteen years, only two size movements were produced – the 18-size and the smaller 16-size.
The company's first series of pocket watches, the Broadway Limited, was marketed as the "Watch of Railroad Accuracy," and Hamilton became popular by making accurate railroad watches. Hamilton introduced its first wristwatch in 1917, designed to appeal to men entering World War I and containing the 0-sized 17-jewel 983 movement initially designed for women's pendent watches. In 1928, Hamilton purchased the Illinois Watch Company for over $5 million from the heirs of John Whitfield Bunn and Jacob Bunn. Some of the most collectible early Hamilton wristwatches include The Oval, The Tonneau, The Rectangular, The Square Enamel, The Coronado, The Piping Rock, The Spur, The Glendale, The Pinehurst, The Langley, The Byrd, The Cambridge, the Barrel "B", and The Flintridge. Many models came in both solid gold and gold-filled cases, and, though rare, some wristwatches such as the Grant were made of sterling silver.
1950s: last decade as a watch manufacturing powerhouse in America
In 1951, Hamilton rebuffed a hostile takeover bid by the Benrus watch company. The fallout from the failed takeover action culminated in Hamilton Watch Co. vs Benrus Watch Co. (206 F.2d 738, 740 (2d Cir. 1953)), a Federal proceeding that is considered to be landmark case in the realm of Federal anti-trust case law.
In 1955, Hamilton provided a "celestial time zone clock, permitting flight-type navigation" for the Astra-Gnome concept of what an automobile would look like in the year 2000.
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In 1957, Hamilton introduced the world's first electric watch, the Hamilton Electric 500. It was available in a variety of non-traditional asymmetrical case styles including the Ventura that was designed by Richard Arbib. The watch was worn by Elvis Presley, who also featured it in the movie Blue Hawaii.
In 1962, Hamilton entered into a joint venture (60% owned by Hamilton) with the Japanese watchmaking firm Ricoh to produce electric watches meant primarily for the Japanese market. The electronic components were produced at Hamilton's Lancaster factory. At the same time, Ricoh undertook mechanical works production and final assembly in Japan. Although production levels of Hamilton-Ricoh watches were high (over 1000 per month), demand was low. Consequently, the Hamilton-Ricoh partnership could not compete with the substantial market presence of Seiko. The partnership was dissolved in 1965, with the remaining Hamilton-Ricoh electronic movements (marked "Ricoh 555E") re-cased as "Vantage" and sold in the U.S.
Swiss/U.S. operations: 1969–1974
In 1966, Hamilton acquired the Buren Watch Company of Büren an der Aare, Switzerland, including all factories and technologies Buren had developed up to that point. From 1966 to 1969, Hamilton Lancaster and Buren Switzerland were operated as a joint concern, with Hamilton using several Swiss movements for their "American" watches and Buren utilizing several components manufactured by Hamilton Lancaster. It was during this time that Hamilton started to selectively incorporate the highly innovative Buren Micro-rotor (a.k.a. Micro Rotor/Micro-rotor) movement into small numbers of certain upper tier watches, in addition to their ordinary hand-wound and traditional automatic watches.
The Buren (now Hamilton/Buren) Micro-rotor was the first patented automatic wristwatch movement to eliminate the sizable external oscillating weight inherent to most automatic winding watches. Instead, it utilized a much smaller weight that was entirely integrated into the chassis of the movement. This design allowed for a substantially slimmer automatic watch that still retained a center sweep second hand. The Micro-rotor concept was also conceived by Universal Genève for use in their Polerouter series of timepieces during this same time. The official title of "first Micro-rotor movement" is still in dispute among some horology aficionados, even though Buren patented their design in 1954, and Universal Geneve applied for their patent in May 1955.
In 1969, the Hamilton Watch Company completely ended American manufacturing operations with the closure of its factory in Lancaster, Pennsylvania, shifting manufacturing operations to the Buren factory in Switzerland.
From 1969 to 1972, all new Hamilton watches were produced in Switzerland by Hamilton's Buren subsidiary. In 1971, the Buren brand was returned to Swiss ownership. By 1972, the Buren-Hamilton partnership was dissolved, and the factory liquidated, due to decreased interest and sales of the Hamilton-Buren product.
On May 16, 1974, the Hamilton brand was sold to SSIH (subsequently The Swatch Group).
From Wikipedia’s article on Hamilton Watch Company, shared under CC BY-SA 4.0.4