Mackintosh-Hemphill Company

In 1859 James Hemphill, W. S. Mackintosh, and W. N. Hart entered into a partnership to purchase a machine shop at the corner of 12th Street and Pike Street in Pittsburgh, Pennsylvania. Their products included steam engines. They subsequently incorporated as Mackintosh-Hemphill Company, Ltd. In 1878 the company purchased the adjoining Fort Pitt Foundry and refitted it for the manufacture of rolling mills for iron and steel makers, including the Bessemer Works in the Homestead section of Pittsburgh. In 1922 A. Garrison and Company and the Pittsburgh Iron and Steel Foundries were merged into Mackintosh-Hemphill. The E. W. Bliss Company acquired Mackintosh-Hemphill in 1955. In 1968 Mackintosh-Hemphill became a division of Gulf & Western Industries. In 1985 the foundry closed. In 1987 Mackintosh-Hemphill filed for bankruptcy and terminated its pension plan. The manufacturing buildings were demolished, but the surviving foundry buildings were designated historic structures in 1991.

From the description of Mackintosh-Hemphill Company records, 1868-1988. (Pennsylvania State University Libraries). WorldCat record id: 316924734

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