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, Uh Pe oe ae 3 a 3 a ‘ : a ITH respect to their attitude W towards electric welding the various shipbuilders in Amer- ica and Great Britain may be divided, roughly, into three classes. (1) The very few who speak as though a riveted joint were the most sacred and efficient institution ever conferred by Divine Providence upon unworthy man. (2) The very few (personally, the writer has not met a single one) who speak and dream of rivetless ships and noiseless shipyards, peopled large- ly by women. (3) The great majority of shipbuild- ers who are too busy to develop new, though promising, methods, but who will employ any new process as soon as they are convinced that this is worth doing. To these are com- mended the matter and spirit of this paper. Their attention is called to the attitude of the British admiralty, the Fifth of a series of lectures on ‘‘Electric Weld- ing’ held at the Engineers’ .club, Philadelphia, under the auspices of the United States shipping board and published in The Journal of the Engineers’ club. The author is a naval constructor, the British navy. Welded fo” \- Frame & Lug VY \Coptirwous Weld Bilge Brackek 45 Aiternate T7an7es, F1alnged 23 O11 FaCe o = Nde Hee/so/7 FXF x«Z “Double © SS SS <OK SS i= €o United . States navy. department, Lloyd’s and the American bureau of shipping. In October, 1917, not a recent date, considering the rate at which scientific matters now progress, the British admiralty called a conference of some of the most experienced constructors from various navy yards, and some of their recommendations were as follows: (1) Although the covered electrode process of electric welding could not be advantageously cases as a substitute for the present process of drilling, riveting, caulking, etc., yet its use would undoubtedly result in a great reduction in the amount of labor involved in such processes. (2) While it was not considered that any advantage would accrue from the application of this process to the present arrangements of riveted non- watertight laps, butts, stiffeners, etc., all watertight work of this nature could probably be well and efficiently Lu9 foforim Sfop Varch Coerning Angle lnfercosta/ adopted in all <= Y ZY yy Y e a Ca ‘American and British pe in Electric Welding Contrasted and Practical Examples Taken from Actual Work Are Described By Commander S. V. Goodall R. N. performed with economy in labor, by increasing the rivet spacing as much as possible, consistent with the proper closing of the work, and supplement- ing this by covered electrode are welding to meet the requirements for strength and watertightness. (3) By this system the process of - watertesting would be greatly facil- itated, with a corresponding saving in time and labor. The United States navy depart- ment, Lloyd’s and the American bu- reau of shipping have sanctioned the use of electric welding for angle staples, plate staples, and _ similar watertight work, in addition to its general use on such work as securing fittings, etc., to watertight bulkheads and decks, whereby not only are time and labor saved, but better water- tightness is obtained. Passing now to specific examples of electric welding, we will first speak of the American practice. It will be quickly seen that American and British practice differ considerably, Beam Ar71ees Nee" X12 eA eg oe JShe// Sating Cincher System ard Jogg/ed as ShOw/7 R “RO Center Heelsosr TUTE “Doub/e Continuous Weld ech Plalin 7 Soggled #, Bracket Aree on Frames VN NS. 15, 20, 25, F0446,5/&56 re Reverse Frame 2£x 25x35," ae SIL119€/" JAS ‘Xe Dou b/e 14 u“ 4 ih Double LUGS RgX ez XZ os te CO/7VEX Lug or Floor FIG. 1—MIDSHIP SECTION OF AN ARC WELDED BARGE—THIS VESSEL IS 125 FEET 9 INCHES LONG, 16 FEET 4 INCHES BEAM, 7 FEET 9 INCHES: MOLDED DEPTH AND HAS A DEADWEIGHT CAPACITY OF 200 TONS—THE FRAMES ARE 2% x 214-INCH ANGLES—THE FLOORS ARE 7 x 3% x 7/20 INCH-ANGLES. THE SHELL PLATING IS JOGGED AND LAPPED AT THE EDGES WITH STRAPS AT THE FLUSH BUTTS —THE DECK PLATING HAS. Te) eS I SO OR Mee ee we Vig See STRAPPED BUTTS 128