1891 Article Ingersoll Quarry Bar Channeler Vintage Machine William L MAB1 XACA6 De Franco of Pittsburgh Pennsylvania

De Franco of Pittsburgh Pennsylvania

There is heavy bleed through showing in this cover

Field of the Cloth of Gold

and Chase National Bank also had offices on the ground floor and in the basement

This is an original 1936 Great Depression Era black and white print ad for Westinghouse's arc welding in the Westinghouse Memorial Bridge outside Pittsburgh

1891 Article Ingersoll Quarry Bar Channeler Vintage Machine William L MAB1 XACA6 De Franco of Pittsburgh PennsylvaniaThis is an original 1891 one page print article about the Ingersoll quarry bar. This article also features an illustration of the method of working a quarry in benches with the aid of the quarry bar, operated as a channeler. The apparatus may be used either for simple rock drilling, for gadding, or for channeling. The credit for the adaptation of the quarry bar and drill to the work of channeling is due to William L. Saunders, the engineer to the