. L'ingegnere meccanico ferroviario . e, che supporta anche il tubo del vapore, è situato nel corso indovinello della caldaia. È largo 12 poll. Da ^ poll. Spesso. Uno dei punti interessanti del dado nella costruzione dei bottili di questi locomotori è il fatto che tutte le giunture in thefirebox, compreso quelle nella camera di comljustion, sono saldate. I fogli laterali e della corona sono in un unico pezzo, essendo spessi.^8 poll.. La lamiera della porta ha uno spessore di y^ in. Tate fle.xiblestaybolts sono ampiamente utilizzati in tutto il firebox in hrfklocomotives. Nel Pacifico locomotive ci sono -ISIJ^-in. Supporti di espansione Tate, 420 r
2101 x 1190 px | 35,6 x 20,2 cm | 14 x 7,9 inches | 150dpi
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. Railway mechanical engineer . e, which also supports the steam pipe, is located in themiddle course of the boiler. It is 12 in. wide by ^ in.thick. One of die interesting points in the construction of bothtypes of these locomotives is the fact that all the seams in thefirebox, including those in the comljustion chamber, arewelded. The side and crown sheets are in one piece, being.^8 in. thick. The door sheet is y^ in. thick. Tate fle.xiblestaybolts are used extensively throughout the firebox in hrfklocomotives. In the Pacific type locomotives there are -ISIJ^-in. Tate expansion stays, 420 rigid IJ^-in. radialstays, 1, 534 1-in. Tate flexible staybolts and 537 1-in. rigidstaybolts. In the 2-10-2 type locomotives there are 56lyk-m. Tate e.xpansion stays, 546 yk-. rigid radial stays, 1, 820 1-in. Tate flexible staybolts and 491 1-in. rigid stay-bolts. In the Pacific type locomotives all the stays in thecombustion chamber below and including row 1 are flexi-ble, as are the first four rows of tlie crown stays. All the. piston for Lehigh Valley Locomotive Staybolts in the sides are flexible up to and including rowB. All the staybolts in the throat are flexible. Super-heaters, brick arches and Street mechanical stokers are usedin both types of locomotives. The firedoor opening is 14in. by 26 in. and is welded the same as the other seams inthe firebox, and they are equipped with pneumatically oper-ated firedoors. The reciprocating parts are made of special steel to reducetheir weight. The piston heads are made of rolled steel oflight section, being 1 in. thick at the piston rod hub and11/16 in. thick at the outside of the web. Hunt-Spiller bullrings are held in place on the piston head by a retaining ringwhich is welded to the piston head. The packing rings arealso of Hunt-Spiller metal. Hollow extended piston rods ofNikrome steel are used. They are held in the piston headby one nut which is provided with a special type of nut lock.This nut lock is made from a disk S/16 in
