EDISON LABORATORY Edison National Historic Site West Orange, New Jersey Volume 1

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52 The boilers generated steam heat the laboratory complex and drive several steam engines. Brown Company Charles Batchelor, May 1887 (in 1887, WOL—Suppliers, General, D- 87-56); Voucher 725, October 1887. Underwood, president the Underwood Manufacturing Company, offered install his company’s patent cotton-leather belting for free. In attempt secure large order for belting, F.H.Building 6 This structure divided into two rooms, the boiler room (positioned next to Building and engine house. This provided the power for lineshafts both the first and second floors.61 One these was the first piece machinery delivered to the laboratory, arriving September 19, 1887.H."64 26 51 Contract between TAE and Babcock Wilcox, August 24, 1887 (in 1887, WOL-Suppliers, General, D-87-56).63 Two Armington and Sims steam engines, one 125 horsepower and one 80 horsepower were installed the power house (as Building was soon called).H. . Underwood Charles Batchelor, October 19, 1887 and Charles Batchelor Underwood, October 21, 1887 (in 1887, WOL-Suppliers, General, D-87-56). Thesé large boilers were made order, was the practice this time, and came with ornamental fronts embellished with the Edison name. These ran the dynamos which provided electric light and power the laboratory. Using technique that had worked with other vendors get unusually deep discounts, Batchelor reminded Underwood that "we shall have, always have had, large number visitors from all parts the world. The first prime mover erected was forty horsepower C. Underwood got the order. 83 C. 62 Charles Batchelor diary, catalog 1337, September 19, 1887. Coal was probably kept the space between Buildings and 4. For examples, see Vouchers 504, 697, and 698. 1887, Edison purchased three Babcock and Wilcox boilers 219 horsepower. Brown engine, which was installed pit the east end the heavy machine shop. 84 F.H. The engine had single horizontal cylinder with 11-inch bore, 30-inch stroke, and ten foot diameter flywheel