Electrical Record Volume 5 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 edition. Excerpt: ...London Engineer has this to say concerning the use of metallic filament lamps in the British capital: --The extension in the use of metallic filament lamps in different parts of London is apparently regarded by the supply undertakings with more favor than was the case a year or two ago. At that time grave apprehensions were entertained that the lamps, giving a minimum of twice the amount of illumination for the same consumption of energy as compared with the carbon filament types, would seriously affect the revenue of the undertakings for a time, although it was believed that their employment would ultimately be of benefit both to supply works and their customers. The experience gained during the past year has, however, modified this view of the question, as with one or two exceptions no definite statements have been made that a loss has actually been incurred through the introduction of the lamps when the total turnover is taken into consideration. Thus. in the area of the St. James and Pall Mall undertaking the number of units sold for lighting purposes in 1908 did not increase in a similar proportion to the number of connections, and in this way the enterprise is feeling the steady advance in the use of metallic filament lamps. It is, however, expected that benefit will be derived in the long run, although the lamps may cause a temporary loss. In the districts served by the metropolitan undertaking the lamps, according to the chairman s recent speech, show a decrease of revenue only in theory. for in practice it is found that numerous customers do not reduce their expenses. but rather increase the lighting on their premises; and it is hoped that the lamps will result in a greater demand for current. The expectation entertained in..