. Official proceedings . r Co Graham Nut Company Front Cover Hunt-Spiller Mfg. x Independent Pneumatic Tool Co. ii Johns-Manville, Inc. *vi Johnson Bronze Co Locomothe Stoker Co xv Mahr Manufacturing Co iii McConway & Torley Co xv NAME Page National Car Wheel Co iii National Malleable Castings Co. iv Niles-Bement-Pond Co vi OBrien, Martin J., Co., Inc Front Cover Paxton-Mitchell Co iv Pgh. Testing Cover Pressed Steel Car Co. xix The Q. & C. Company xvii Railway Steel Spring Co xvii Republic Railway Equipment Com-pany xvii Safety Car Heat. & Lighting Co xvi S
. Official proceedings . r Co Graham Nut Company Front Cover Hunt-Spiller Mfg. x Independent Pneumatic Tool Co. ii Johns-Manville, Inc. *vi Johnson Bronze Co Locomothe Stoker Co xv Mahr Manufacturing Co iii McConway & Torley Co xv NAME Page National Car Wheel Co iii National Malleable Castings Co. iv Niles-Bement-Pond Co vi OBrien, Martin J., Co., Inc Front Cover Paxton-Mitchell Co iv Pgh. Testing Cover Pressed Steel Car Co. xix The Q. & C. Company xvii Railway Steel Spring Co xvii Republic Railway Equipment Com-pany xvii Safety Car Heat. & Lighting Co xvi Schaefer Equipment Co v Sipe. James B., & Co iv Standard Steel Car Co xviii Steel Car Forge Co Front Cover Stucki Co., A iii S . Inm, M. B., Co Back Cover The Superheater Co Front Cover The T. 11. Symington Co v Union Si>ring &. Mfg. Co xiv Union Steel Casting Co xviii U. S. Metallic Packing Co xvi Vapor Car Heating Co., Inc xviii Westinciouse Air Brake Co vii Westinghouse Electric & Mfg. Co vii. iH The springs that constitute theCreco Brake Beam Support areas sensitive to the objectionablemovements of the brake beamas human arms would be in thesame position. For every suchmovement a corrective force isexerted by the springs—it is nat-ural and instantaneous—a trulyhuman tendency to correct faultyposition and to maintain proper
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