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Wikipedia: Delco Electronics

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A manufacturer of automobile electrical systems & components, founded in 1909. The name is an abbreviation of Dayton Engineering Laboratories Co. In 1974 General Motors merged Delco with AC Spark Plug to form ACDelco.


The following section is an excerpt from Wikipedia's Delco Electronics page on 4 October 2017, text available via the Creative Commons Attribution-ShareAlike 3.0 Unported License.

Delco Electronics Corporation was the automotive electronics design and manufacturing subsidiary of General Motors based in Kokomo, Indiana. The name Delco came from the Dayton Engineering Laboratories Co., founded in Dayton, Ohio, by Charles Kettering and Edward A. Deeds in 1909.[1] Delco was responsible for several innovations in automobile electric systems, including the first reliable battery ignition system and the first practical automobile self-starter.

Initially Kettering and Deeds were co-workers at National Cash Register Company (NCR). Kettering and Deeds had a lifelong professional relationship and friendship. In 1904, Deeds hired Kettering at NCR to motorize the cash register.

Around 1908, Deeds asked for help with a car he was building from a kit. Working in one of Deeds' barns with spare-time help from William A. Chryst and other NCR friends, Kettering developed a high-energy spark ignition system to replace the weak-spark model supplied with the kit. Leaving NCR in 1909, Kettering focused on final development of this ignition set and demonstrations were favorably received. In 1909, when Henry Leland of Cadillac ordered 5,000 ignition sets, Deeds and Kettering formed the Dayton Engineering Laboratories company. The ignition system was introduced on the 1910 Cadillac.

In 1911, Kettering invented and filed for U.S. Patent 1,150,523 for the first useful electric starter, adapted from a cash register motor.[2] The starters were first installed by Cadillac on production models in 1912.

In 1915, Deeds left NCR to devote himself full-time to Delco. At the time, one of Kettering's widely known inventions was the Delco-Light, a small internal combustion generator with battery intended to provide a source of electric illumination and mechanical power to rural residents (mostly farmers) who were yet to be connected to the nascent electrical grid system.[3] The Delco brand name was associated with original production units of the company such as Delco Light, Delco Products, Delco Moraine and others.

During World War I, the Delco plant in Moraine, Ohio, was expanded to manufacture the De Havilland DH.4 bomber, the only American-built airplane to see action in World War I. More than 3,000 were built in Moraine for the Dayton-Wright Airplane Company. Delco was also one of the manufacturers that produced the Liberty aircraft engine.

In 1918, General Motors (GM) acquired the United Motors Company which had been formed several years earlier by William C Durant to house several prominent parts manufacturers, including Delco, Dayton-Wright, and the Dayton Metal Products Company.[4] All of these latter companies were associated with Charles Kettering, Edward A. Deeds, and Harold E. Talbott. Kettering became vice president of General Motors Research Corporation in 1920. He held the position as head of research for GM for 27 years.

In 1930, Delco Products researched and developed a new type of auto carburetion system called the Cold Carburetion System which was a cross of the standard carburetor of that era and the future fuel injection system. While Delco Products promised a lot with their invention, it never became an option on GM autos either as production or an addon.

In 1936, Delco began producing the first dashboard-installed car radios. By the early 1970s, Delco had become a major supplier of automotive electronics equipment. Based in Kokomo, Indiana, Delco Electronics employed more than 30,000 at its peak.

In early 1956, Delco produced a transistorized hybrid signal-seeking car radio, which used both vacuum tubes and transistors in its radio's circuitry. Transistors were used to replace the radio's audio output vacuum tubes and also the vibrator. This transistorized hybrid radio was available as an option on the 1956 Chevrolet Corvette car models.[6]

In 1957, Delco produced an all-transistor signal-seeking car radio that was available for the 1957 Cadillac Eldorado Brougham car models.


DateMedia or Collection Name & DetailsFiles
Early 1950'sFamous Batteries
The Jam Handy Organization for Delco

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27 September 1919General Motors Absorbs DelcoThe New York Times

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