Matt Weldon's photos with the keyword: pyrex

Along CR 25A between E Miami-Shelby Rd and Troy-Sidney Rd, Piqua, Ohio. A close up of a pair of CD 234 Pyrex glass insulators in the color of straw in service use just north of Piqua, Ohio.

A very large power insulator produced by the Corning Glass Works in Corning, New York for the Pyrex trademark line of insulators which produced insulators in the 1920's - 1940's. The CD 331 Pyrex insulator with a width of 15" and height of 11" and weight of 38.25 lbs makes it the largest and heaviest glass pintype insulator produced in North America. This Pyrex insulator known as mold style No. 701 were produced in the 1930's and supported voltages of 70,000 volts. Most CD 331s were used around Dalles & Pendleton, Oregon; Walla Walla & Dayton, Washington; Montana. Here is a link showing them in service use. Photos by Bill Rohde. www.insulators.info/service/pyrex.htm