Bøger af Erik Oberg

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Together with number theory, geometry and analysis, algebra is one of the very cornerstones of modern mathematics. Broadly speaking, it is the study of mathematical symbols and the laws for manipulating them using formulas. This vintage book contains an introductory guide to the subject, walking the reader through its basics and moving on to its practical uses in electrical and steam engineering drawing, as well as machine design and workshop practice Contents include: "Use of Formulas", "Use of Equations in Solving Problems", "Principles in Algebra", "Solving Equations of the First Degree", "Solving Quadratic Equations", etc. This volume will be of utility to those with an interest in engineering, and it would make for a wonderful addition to allied collections. Many vintage books such as this are increasingly scarce and expensive. We are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.

A 'Collector's Edition Replica' of the original first edition of the "Machinery's Handbook", published in January, 1914. Suitable as a gift for your favorite machinist or to add to your own collection, it includes a comprehensive selection of practical technical information, data, and standards for these industries.

This edition of the "Machinery's Reference Series" deals with iron and steel, exploring their properties, uses in manufacturing, how they can be hardened, and much more. Contents include: "Principles of Iron and Steel Manufacture", "Steel Castings", "Open-Hearth Furnaces", "Tests on Steel Castings", "Steel Hardened Metals", "Development and Use of High-speed Steel", "Hardening Steel, by E. R. Markham", "Case-Hardening", "The Brinell Method of Testing the Hardness of Metals", "Uses of Steel Castings", "Reliability of Steel Castings", "Manganese Steel", "Nickel Steel", "Tungsten Steel", "Molybdenum", etc. This book contains simple explanations and step-by-step instructions for any processes dealt with, making it ideal for novices or apprentices, as well as a handy reference guide for more experienced metalworkers using steel or iron. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with a specially-commissioned new introduction on metalwork.

First published in 1908, this vintage book contains a complete handbook on many different types of small tools, including threading tools, reamers, drills, taps, dies, cutters, and more. "Handbook of Small Tools" offers detailed information on the design and construction on small cutting tools, as well as chapters dealing with the different methods of creating screw threads. Written in clear, simple language and containing useful diagrams and tables, this volume will prove to be an invaluable resource for the tools-maker, draftsman, foreman, inspector, and others with an interest in the subject. Contents include: "The United States Standard Thread", "Formulas for Determining the Number of Threads per Inch", "Principal Requirements for a Desirable Screw Thread", "The Sharp V-Thread", "Comparison Between the United States Standard and the Sharp V-Thread", "The Advantages of the Fine Pitches", "Points of Advantage of the Sharp V-Thread", etc. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.

First published in 1915, this volume contains a detailed treatise on drilling and tapping operations, including chapters on the design of drill jigs and fixtures intended for interchangeable manufacture. Drilling is creating a smooth hole in a material using a drill and motor, and Tapping refers to the action that produces a thread on the inside of the hole. Written in clear, simple language and containing useful diagrams and tables, this volume will prove to be an invaluable resource for anyone with an interest in drilling and related subjects. Contents include: "Principles of Drilling Practice", "Types of Drilling Machines", "Tapping and Tapping Attachments", "Grinding Twist Drills", "Drilling Department Equipment and Requirements", "Deep-Hole Drilling", "Principles of Jog Design", "Jog Bushing", "Locating Points and Adjustable Stops", "Jog Clamping Devices", "Design of Open Drill Jigs", etc. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.

First published in 1914, this volume contains a detailed treatise on two different types of gear: worm gears and spiral gears. A worm gear refers to a gear where a worm (a gear in the form of a screw) meshes with a worm gear (similar in appearance to a spur gear). A spiral gear is a type of bevel gear that contains helical teeth. Written in clear, simple language and containing useful diagrams and tables, this volume will prove to be an invaluable resource for anyone with an interest in the design and construction of gearing. Contents include: "Principal Rules and Formulas for Designing Spiral Gears", "Formulas for Special Cases of Spiral Gear Design", "Herringbone Gears", "Methods for Forming the Teeth of Spiral and Herringbone Gears and Worms", "Hobs for Spur and Spiral Gears", "Calculating The Dimensions of Worm Gears", "Allowable Load and Efficiency of Worm Gears", "The Design of Self-Locking Worm-Gears", etc. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.

"Screw Thread Cutting" is a vintage guide to "threading", which refers to the process of creating screw threads. More screw threads are produced each year than any other machine component, and there are many methods of creating threads, including subtractive methods (cutting and grinding); deformative or transformative methods (rolling and forming; moulding and casting), and additive methods (such as 3D printing). This volume focuses on subtracting and transformative methods, making it a useful reference guide for those with an interest in traditional methods of making screws. Contents include: "Change Gears for Thread Cutting, by Erik Oberg", "Kinks and Suggestions in Thread Cutting", and "Tables and Formulas for Making Thread Tools, by A. L. Valentine, Erik Oberg, and Jos. M. Stabel". Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.

This volume contains a vintage guide to machine design and workshop practise, with this edition focusing on screw thread tools and gauges. A gauge or gage is a scientific or engineering device that is used to measure or to display certain dimensional information. A wide range of such tools exist which serve this function, ranging from simple pieces of material against which sizes can be measured to large and complex pieces of machinery. With helpful diagrams, useful measurement tables, and simple explanations, this volume would make for fantastic reference guide for engineers and handy addition to collections of allied literature. Contents include: "Screw Thread Systems, by Erik Oberg", "Making Thread Tools, by E. A. Johnson", "Tools for Accurate Thread Cutting, by Jos. M. Stabel", "Making Thread Gages, by. A. L. Monrad", "Measuring Screw Thread Diameters, by Walter Cantelo", etc. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.

"Solution of Triangles" is a concise treatise on the use of formulas and trigonometry within engineering. Originally designed for use in machine shops, tool rooms, and drafting rooms, it offers simple, practical information on the solution of triangles and related formulas for those engaged in machine work and allied fields. This vintage book will appeal to those with an interesting workshop practice, and it is not to be missed by collectors of related literature. Contents include: "The Use of Formulas", "Angles and Angular Measurements", "Positive and Negative Quantities", "Functions of Angeles", "Tables of Trigonometric Functions", "Practical Applications of Trigonometric Formulas", "Right-angled Triangles", "Solution of Oblique-angled Triangles", "Summary of Formulas for Solution of Triangles", etc. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.

This vintage book contains a guide to advanced mathematics related to engineering and the workshop, especially that which related to machine design and workshop practice Contents include: "Square Root", "Cube Root", "The Use of Formulas", "Time Required for Drilling, Milling, and Planing", "Pulley and Gear Drives", "Horsepower of Belting", "Change Gears for Cutting Metric Threads", "Areas of Plane Figures", "Volumes of Solids", "Specific Gravity and Weights of Bars and Castings", etc. This volume will be of utility to those with an interest in engineering, and it would make for a wonderful addition to allied collections. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.