FIVE GOOD PRACTICALBOOKS By JOSEPH V. WOODWORTH These are practical shop books for all interested in accurate tool and die making, steel treatment, drop forging, die sinking, power presses and modern shop practice in the production of duplicate metal parts. This is the only practical, authoritative book for the die maker and power press user. ...--. Price 3.00. Dies Their Construction and Use for Modern Working of Sheet Metals. Hardening, Tempering, Annealing and Forging of Steel. The most up-to-date book on steel treatment for the practical steel worker and the user of tempered steel cutting tools. - - Price 2.50. American Toolmaking and Interchangeable Manufacturing. A 20th century shop reference book on the very latest toolmaking practice, interchangeable manufacturing and machining of duplicate metal parts. Price 4.00. Punches, Tools and Dies for Manufacturing in Presses. A cyclopedia of die making practice, sheet metal formation in presses, and use of punches and dies. - - - - - Price 4.00. Drop Forging, Die Sinking and Machine Forming of Steel. The only book published on these great branches of mechanical art and modern shop practice. A mine of practical informationfor the drop-forger, die sinkerand steel parts manufacturer. ... Price 2.50. Power Presses Their Feeds, Attachments and Safety Devices. If interested in this book, send us yourname and we willsendadescriptive circular of it, on publication. In preparation. ofthe above books sentprepaidon receipt oftheprice The NormanW. Henley Publishing Company 132 Nassau Street NEW YORK Drop Forging, Die Sinking and Machine Forming of Steel MODERN SHOP PRACTICE, PROCESSES, METHODS, MACHINES, TOOLS AND DETAILS A Practical Treatise on The Hot and Cold Machine-Forming of Steel and Iron into Finished Shapes Together with Tools, Dies and Machinery Involved in the Manufacture of Duplicate Forgings and Interchangeable Hot and Cold Pressed Parts from Bar and Sheet Metal Comprising Die Sinking and Drop Forging Practiceand DesignforModern Forging, Pressing and Stamping of Duplicate Parts . . . Die Sinking Methods, Processes, Machines and Tools . . . Drop Forging Dies Their Design, Construction and Use inDropHammerand Forging Machine . . . Press Forming of Heavy Hot and Cold Stock in Dies . . . Drop Forging and Hardening Plants TheirDesigns,FundamentalConditions,andtheEquip ment Involved in Their Attainment . . . Steel and Iron Their Treatment for Twisting, Reducing, Forging and Working in Drop Dies . . . Hot Pressed Steel and Iron Parts Their Manufacture and Assembling into Finished Products . . . Drop Hammers Their Development,Use, Weights, Foundations and Dies . . . Forging Machine, Steam Hammer, Bulldozer and Swaging Machine Methods and Processes . . . Machine Forging, with Examples of Modern Practice and Tools Involved. By JOSEPH V. OODWORTH Author of Dies Their Construction and Use etc. CONTAINING 300 ILLUSTRATIONS NEW YORK THE NORMAN W. HENLEY PUBLISHING CO. 132 NASSAU STREET 1911 PREFACE The hot and cold shaping, squeezing, forming, and bend- ing of duplicate metal parts and high-speed steel cutting tools by forging in drop-dies, drop-hammers, steam-ham- mers, hydraulic presses, and forging-machines, are becoming more appreciated by the most advanced manufacturers and mechanics but, until the publication of this work, to the average mechanic familiarity with the advanced shop prac- tise, tools, and processes has been denied, because of the almost total lack of descriptive practical literature, and also the conservatism of manufacturers and experts in publishing their shop-practise and knowledge evolution. Therefore, to make possible among mechanics a broad and comprehensive knowledge of these arts I present this book, hoping it will find a valuable and permanent place in its field. BROOKLYN, N. Y., January, 1911. JOSEPH V. WOODWORTH...