. American engineer and railroad journal . EWITT LAMPS. THE LIGHTING OF ERECTING SHOPS AND HEAVYMACHINE SHOPS. S. H. Knapp. The artificial lighting of the work in erecting shops and heavymachine shops, such that the employees can have working con-ditions equal to daylight, has in the past been a difficult prob-lem. The great height of the heavy cranes has made it neces-sary to place most, if not all, of the lighting units underneath diffusion. Accordingly, if these satisfactory conditions can beartificially duplicated by placing the light source directly overthe machines and workmen, a better
. American engineer and railroad journal . EWITT LAMPS. THE LIGHTING OF ERECTING SHOPS AND HEAVYMACHINE SHOPS. S. H. Knapp. The artificial lighting of the work in erecting shops and heavymachine shops, such that the employees can have working con-ditions equal to daylight, has in the past been a difficult prob-lem. The great height of the heavy cranes has made it neces-sary to place most, if not all, of the lighting units underneath diffusion. Accordingly, if these satisfactory conditions can beartificially duplicated by placing the light source directly overthe machines and workmen, a better distribution and the avoid-ance of eclipsing shadows will be obtained. The Cooper Hewitt lamp, with its perfect diffusion resultingfrom a large luminous surface, makes possible the satisfactoryillumination of a floor surface from a much greater height thanwas formerly considered possible. At the same time the com-parative length of light source in the 50-inch tubes makes it pos-sible for heavy cranes to pass underneath without causing any. COOPER HEWITT ILLUMINATION OF MACHINE SHOP, RENSSELAER MANUFACTURING COMPANY. July, 1909. AMERICAN ENGINEER AND RAILROAD JOURNAL. 209 sharply defined shadows. This, with the absence of glare, as ob-tained from other illuniinants, makes it possible for the me-chanic to distinguish details in his work with accuracy. The accompanying photograph shows an erecting shop of oneof the large railroad systems lighted by 34 type F CooperHewitt lamps, giving 28,900 candle-power at a current consump-tion of kilowatts. The building is 442 by 94 feet, or has41,550 square feet of floor area. The height of the lamps fromthe floor is 50 feet, and 1,225 square feet of floor surface isallowed per lamp. In an adjoining erecting shop of three-fourths the size, two and one-half times as much power is beingused to furnish arc lighting from the side walls, with most un-satisfactory results. In heavy machine work, some idea of Cooper Hewitt illumina-tion may be o
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
