| Name | Summary | Parent Co. | Child Co. | Is Base Co. |
|---|---|---|---|---|
| Golden Novelty Company | Made cast front cases that often housed Western Clock Clock Manufacturing Company or Western Clock Company movements. | Yes | ||
| Gruen | Became known as Gruen Watch Company in 1922. | Yes | ||
| Hamilton | Hamilton Watch Company. Lancaster, Pennsylvania. Produced its first watch in 1893. | Yes | ||
| Hammond | Hammond Clock Company was founded in 1928 to produce electric clocks with a manual-starting synchronous motor. The company became known as the Hammond Instrument Company in 1937. They made clocks unti . . . | Yes | ||
| Haydon | Forestville, Conn and other locations. Makers of electric synchronous motors. | Yes | ||
| HECO | Henry Coehler Company, New York. Importer of 400 day and cuckoo clocks, dealer for Junghans clocks in the 1950s | Yes | ||
| Hytron Corporation | Manufacturer of vacuum tubes. Bought out by CBS in 1951. Advertisements state that Hytron developed the GT tube starting in 1938, and the first miniature (baseless) tube also in 1938. Company location . . . | Yes | ||
| Imperial Co. | Chicago. Maker of cast front clock cases. | Yes | ||
| Ingersoll | The Ingersoll Watch Company started as mail order business (R H Ingersoll & Bro) started in New York City in 1882 by 21-year-old Robert Ingersoll and his brother Charles Ingersoll. | Yes | ||
| Ingraham | Elias Ingraham (1805–1885) was born in Marlborough, CT, and became a famous clock case maker and designer. In 1828 he came to Bristol, CT to design and make clock cases for George Mitchell, a succes . . . | Yes | ||
| Junghans | Maker of clocks and watches, still in existence, founded in Germany in 1861. | Yes | ||
| Kenmore Kodel | Kenmore clocks by The Kodel Electric & Manufacturing Co., 517 East Pearl St., Cincinnati, Ohio. | Yes | ||
| Kern and Sohn | German maker of 400 day clocks in the 1950s. | Yes | ||
| Kundo | Base company for Kieninger & Obergfell. Maker of 400 day clocks. | Yes | ||
| Lux | The Lux Clock Manufacturing Company was founded in 1914 by Paul Lux. | Yes | ||
| Mido | A watch company founded in Switzerland in 1918. Well known for their Multifort line of wrist watch waches which are self-winding, waterproof and shock resistant. Today Mido is part of the Swatch Group . . . | Yes | ||
| Minneapolis Honeywell | Minneapolis-Honeywell was created by the merger of Honeywell Heating Specialty Company and Minneapolis Heat Regulator Company in 1927. (Source Wikipedia) | Yes | ||
| Montgomery Ward | Mail order and department store retailer who marketed some clocks with their name on it. | Yes | ||
| M. S. BENEDICT MFG. CO. | EAST SYRACUSE, N. Y. Maker (or marketer) of cast front clock cases. | Yes | ||
| New England Watch Company | The Waterbury Watch Company was renamed the New England Watch Company in 1898. In 1914 Ingersoll purchased the New England Watch Company. | Yes | ||
| New Haven | Chauncey Jerome (1793–1868) was an important figure in early American clock manufacturing. In 1816 he worked for Eli Terry and made the first pillar and scroll cases (to house wooden movements). In . . . | Yes | ||
| Parker | Maker of alarm clocks in Meridan, Connecticut, ca. 1893 - 1934 | Yes | ||
| Reliance Automatic Lighting Co. | Racine, Wisconsin. Maker of electric time switches, windup and synchronous. | Yes | ||
| Salem | Salem Clock Company, 75 Van Dyke Avenue, Hartford, Conn, 06114. Maker (reseller?) of nautical clocks, probably made in Germany. | Yes | ||
| Sangamo Electric Company | Original owner of the patents for the Sangamo motors used by Westclox and Seth Thomas. The Sangamo Electric Company was founded in 1899. Made about 40 prototype clocks in 1924 (actually made by the . . . | Yes | ||
| Schatz | This is the base company for Aug. Schatz and Sohnne; Jahresuhrehfabrik, and Gutenbacher Uhrenfabrik (Gufa). Jahresuhrenfabrik (Year Clock Factory) made 400 day clocks starting around 1880 - 1885. . . . | Yes | ||
| Sears | This is the base company for Sears, Roebuck & Company. They sold some Westclox clocks with the Sears name on the dial. | Yes | ||
| Seiko | Founded in 1881, to produce clocks under the name Seikosha. Made watches starting in 1924. (Source Wikipedia) | Yes | ||
| Sessions | Elisha N. Welch was born in 1809 at Chatham, CT. He was a businessman who invested in the foundry and clockmaking business. About 1856 Mr. Welch took over the bankrupt J. C. Brown clock factory and st . . . | Yes | ||
| Seth Thomas | The base company for Seth Thomas. Seth Thomas was born in Wolcott, CT in 1785, went to work for clockmaker Eli Terry in 1807, bought out Terry’s factory (together with Silas Hoadley) in 1810, and . . . | General Time Corporation; General Time Instruments Corporation; Plymouth; Seth Thomas Clock Company | Yes | |
| Sterling Clock Company | Maker of Sterling Electric automobile clocks. Was in Meridan, Connecticut, then bought by Westclox and moved to LaSalle, Illinois. | Yes | ||
| St. Louis Computing Company | A corporation of St. Louis, Missouri. A Stahlberg patent is assigned to this company. | Yes | ||
| Stockham Manufacturing Company | Chicago, Illinois. Some patents for cast front clock cases are assigned to them. | Yes | ||
| Sunbeam | A well-known American appliance maker. Made electric clocks for a while. | Yes | ||
| Taylor Instruments | Taylor Instruments was founded in 1851. They made measuring instruments for the manufacturing industry, and altimeters for fighter jets in WWI. They are well known for their thermometers, barometers a . . . | Yes | ||
| Telechron | This is the base company for Warren Clock Co., Warren Telechron Co., etc. as well as General Electric. | General Electric; General Electric Telechron; Revere; Telechron Inc.; Warren Clock Company; Warren T . . . | Yes | |
| Tork | The Tork Clock Company Inc., Mount Vernon, NY. Made clock operated switches. | Yes | ||
| Wakmann Watch | Founded in 1946 by Mr. Icko Wakmann. (Source http://shop.wakmann.ch/index.php/history.html) | Yes | ||
| Waltham Watch Company | Produced about 40,000 watches and related items from 1850 to 1957. (Source Wikipedia) | Yes | ||
| Waterbury Clock | Waterbury Clock Company. The Benedict & Burnham Manufacturing Company of Waterbury, CT was formed in January 1843 to manufacture brass sheeting, brass products and gilt buttons. By the summer of 18 . . . | Timex | Yes |
