. American engineer and railroad journal . ip never practised iu tliiscountry. The corresponding American seam at D, fig. 13,is shown by fig. 20, and is simply a double-riveted lapseam. With reference to the relative merits of the twoforms of joints, something may be said for each a butt joint is used the plates are considered to beless liable to corrosion or grooving along tbe caulking a butt joint with a single outside welt tbe plates areprobably less liable to grooving than they are in a lap seam,but the welt may and sometimes is corroded and cracked,and such a defect is
. American engineer and railroad journal . ip never practised iu tliiscountry. The corresponding American seam at D, fig. 13,is shown by fig. 20, and is simply a double-riveted lapseam. With reference to the relative merits of the twoforms of joints, something may be said for each a butt joint is used the plates are considered to beless liable to corrosion or grooving along tbe caulking a butt joint with a single outside welt tbe plates areprobably less liable to grooving than they are in a lap seam,but the welt may and sometimes is corroded and cracked,and such a defect is not discoverable by internal inspection, * There is a Utile doulit at tlie time tliis was written whether the longitu-dinal jiiinis of engine 90:< arc bint joints Willi double \Mt strips or lapjoints wilh welt strips inside, and there was no means of deriding it beforegoing lo press. The form of seam sliown by fig i\. however, repreEentsthe present priictice of the Schenectady Locomotive Works. 64 THE AMERICAN ENGINEER [February, Vol. LXVir, No. 2.] AND RAILROAD JOURNAL. 65
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
