. Procédure officielle . Serrure et écrous de maintien de Dieter ^ NORME DE SÉCURITÉ NUTCORPORATION 30 CHURCH ST. NEW YORK NORDBERG CHANGEMENT DE PISTE BREVETÉ LOCOMOTIVES HEISLER MOTORÉDUCTEURS À POINTES DE CHEMIN DE FER Martin J. OBrien Company, Pittsburgli, Pennsylvanie Union Bank BâtimentALWAYS À VOTRE SERVICE— p. T. L. inspecteurs—situés dans l'eentera industriel largre. Inspecter et tester chaque étape pendant la fabrication et l'excellence de la construction. Bulletin 20 et 21 TEU Comment faire—écrire pour votre copie. PITTSBURGH TESTING LABORATORY inspection Engineers and Chemists GRAHAM BOLT & NUT CO. PITTSBURGH, PA. FABRICATION

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. Official proceedings . Dieter Lock and Holding Nuts ^ STANDARD SAFETY NUTCORPORATION 30 CHURCH ST. NEW YORK NORDBERG PATENTED TRACK SHIFTER HEISLER GEARED LOCOMOTIVES RAILROAD SPIKE DRIVER Martin J. OBrien Company, Pittsburgli, Pa. Union Bank BuildingALWAYS AT YOUR SERVICE— p. T. L. Inspectors—located in the largre industrial eentera. inspect and test every step during manufacture and sruarantee excellenceof construction. Bulletin 20 and 21 TeU How It Is Done—Write For Your Copy. PITTSBURGH TESTING LABORATORY Inspection Engineers and Chemists GRAHAM BOLT & NUT CO. PITTSBURGH, PA. MANUFACTURERS OF Hot Pressed Nuts, Gold Punched G. & T. Nuts, Bolts, Rivets, Lag Screws, Waslters, EtCc GEORGE J. HAGAN CO. CHAMBER OF COMMERCE BUILDING, PITTSBURGH, PA. A Furnace and a Fuel for Every Railway Application COAL OIL GAS ELECTRIC. Lift out the glassesone at a time toclean. JOHNSON Babcock Water GaugeProtector The oritrinal Babcock Safety Protector, improvedto give liberal thiiee-vision opening and easy re-moval of glasses for cleaning. The only safe, yet absolutely accurate, watergauge protector ever designed. Has extra heavy cast bronze casing, double ob-servation glasses, each of one-quarter inch plateglass. Babcock outlet for steam, hot vk^ater andbroken glass, if tube bursts, and new lightingfeatuiie increasing efficiency 100%. In use by leading railroads everywhere. Write today for descriptive pamphlet and prices. Johnson Bronze Company, NEW CASTLE. PA. BRAKE BEAMS -- AND Built-Up Types Brake Beam Supports

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