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The exact year when actual insulator production ended at the Covington site is still undetermined, but it was likely sometime in the 1890-1894 period.The Covington factory also re-opened for a short time in the 1900-1902 period.resize=300,188&ssl=1 300w, https://i2com/ Medium-Green.jpg? resize=1030,645&ssl=1 1030w, https://i2com/ Medium-Green.jpg? w=1280&ssl=1 1280w, https://i2com/ Medium-Green.jpg? w=1920&ssl=1 1920w" data-lazy-sizes="(max-width: 300px) 100vw, 300px" data-lazy-src="https://i2com/ Medium-Green.jpg? 40 had been in heavy production since 1911, for telegraph lines).resize=300,188&is-pending-load=1#038;ssl=1" srcset="data:image/gif;base64, R0l GODlh AQABAIAAAAAAAP///y H5BAEAAAAALAAAAAABAAEAAAIBRAA7" The HEMINGRAY-42 In 1921, the “Hemingray-42” style insulator was introduced which was an update/replacement for the Hemingray NO. The “new and improved” #42 model very quickly gained in popularity for standard open-wire communication lines, and was soon the most popular and common insulator made for both telegraph and telephone lines.The business offices remained at Covington until 1919, at which time all operation was moved to Muncie.In 1933 the Muncie factory officially became the “Hemingray Division”, a subsidiary of the Owens Illinois Glass Company (factory #26), but insulators made after that year continued to carry the “HEMINGRAY” name.Hemingray operated under several slightly different company names during it’s long history, first as Gray & Hemingray (1848-1856), then Gray, Hemingray & Bros.

(The very last glass insulators made were produced at the Indiana Glass Company factory located in Dunkirk, Indiana, using molds that had been moved from Muncie to that location). The earliest insulators made by Hemingray have not been specifically identified but would almost certainly be circa 1850s threadless or possibly “Wade” types.

S-G’s North American container division later became known as Verallia North America, which was then sold to Ardagh Group in April 2014.

The rights to the “Kerr” brand name, as used on currently-made fruit jars, was held by the Alltrista Corporation, which later became known as the Jarden Corporation (Jarden Home Brands).

In 1852 the actual glasshouse operation was moved across the Ohio River to Covington, Kentucky, but the business office/showroom remained in Cincinnati until 1881, when it too was removed to a new building in Covington.

With the explosion of manufacturing concerns during the 1880s in the “natural gas belt” of central Indiana & northwestern Ohio, a new glass manufacturing facility was built in Muncie, Indiana and production commenced there in September of 1888.

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Their most famous and important fruit jar in the early years was their “Kerr – Economy” jar, made in large quantities at their plants in Altoona, KS and Sand Springs, OK.