Methods Of Machine Shop Work (1914) - Original

US $85.00

Mebane, North Carolina, United States
Jan 30th

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Methods of Machine Shop Work: For Apprentices and Students in Technical and Trade Schools, by Frederick A. Halsey, published by McGraw-Hill Book Company, Inc., New York, NY, 1914, First Edition Fourth Impression. 6 x 9 hardcover, 295 pages, with 285 photos and drawings. This book is an ORIGINAL, not a reproduction. It is in very good condition: the covers are soiled and slightly edgeworn, especially at the corners. There is a one inch tear at the top spine, back. The pages are clean and free of marks and underlining. The binding is not quite tight, but nearly so, with no cracks, and the flyleaves are fully intact and bound. There is no evidence of yellowing or foxing. Frederick A. Halsey was a well-known mechanical engineer and served as long-time editor of American Machinist magazine, but he left a more lasting mark as an economist. His 1891 paper on pay plans for workers -- arguing against piecework payment and profit-sharing, and proposing an incentive wage system with an hourly wage, production requirements, and additional pay incentives for workers who exceed production goals -- had a major impact on the subsequent structure of labor pay in America and Britain. Halsey also represented the National Association of Manufacturers in its successful fight against adoption of the metric system in America in 1902. Fifteen years later was a founding member of the American Institute of Weights and Measures, an industry group established to fight the next attempt to block metrics. The object of this volume is to show how the problems of the shop are attacked and solved, not to show how machine tools are operated…. Few machine shops make use of more than a small fraction of the methods which are herein explained and which the properly informed should know but the learning of which commonly requires half a lifetime. While many of the methods shown are the commonplaces of the experienced mechanic, they have not, heretofore, been gathered together in print, and still less have their underlying principles or their mutual relationships been explained for the use of beginners. Table of Contents: THE TWO SYSTEMS OF MACHINE PRODUCTION The making and manufacturing systems defined and contrasted -- The machine tools characteristic of each their place of origin development and distinguishing characteristics -- Early developments of accurate measurements in Great Britain and the United States -- Early history of the manufacturing system -- Basic features of the two systems -- Effect of the measuring system on shop organization workmanship and business policy PRECISION WORK AND WORKMANSHIP Interchangeability and high accuracy not synonymous -- Tendency of all machine work toward degradation of workmanship -- Precision workmanship checks this tendency -- The three kinds of accuracy -- Originating flat surfaces -- Uses of such standards -- Originating squares and other angles by the scraping process -- Other methods of originating squares and angles -- Uses of such standards -- The principle of the division of functions -- Originating index plates -- Originating index worm wheels MEASURES OF LENGTH The metric fallacy -- The origin of measures of length -- Relative accuracy of line and end measures -- Relation of accuracy of measurement to character of surfaces -- Source of error in shop use of line measures -- Methods of avoiding this source of error -- Early history of measuring machines -- The line measure as a standard -- Characteristic features of modern measuring machines -- The micrometer caliper -- Precision lathes for cutting precision screws THE MEASUREMENT OF ERRORS Instruments for measuring errors embodying the multiplying lever -- Uses of these instruments -- The dial gage and its uses -- The measurement of errors with extemporized apparatus GAGES Relation of stiffness and sensitiveness of gages In large gages stiffness must be sacrificed to lightness -- Expedients used under these conditions Defects of snap gages Explanation of the popularity of common calipers -- Limit gages Improved construction of snap gages -- Causes which restrict the use of gages -- The Johansson combination gages, their principles and properties -- Uses of these gages -- Screw thread gages -- Independent measurements of the various elements of screw threads -- Measuring the errors of pitch of long screws. FITS AND LIMITS The limit system of manufacture -- Definition of terms -- The shaft and the hole bases for fits -- Differences between American and British practice -- Influence of the grinding machine --Examples of tolerances in various work Taper fits DRIVING SYSTEMS FOR MACHINE TOOLS The three leading systems of driving and their proper fields of use -- Defects of the old type of cone pulley and methods of overcoming them -- Individual vs. group motor driving TURNING AND BORING The primitive engine lathe Lathes for work of large diameter and great length -- The boring mill plain and turret -- The turret lathe Special tools and their cost -- The collet chuck -- The pilot bar -- Reamers and reaming -- The automatic turret lathe -- The magazine feed -- The multiple spindle automatic turret lathe -- The multaumatic machine -- The Fay and Lo swing lathes -- The three types of boring bars and their uses -- Taper and spherical boring bars-- Vertical boring machines for large engine cylinders FLOOR-PLATE WORK The floor plate system of machine tools -- Such tools have no defined limit of capacity Uses of the various tools -- The floor plate boring mill DRILLING Types of drilling machines Jigs and their uses -- Gang multiple spindle and station drilling machines -- The laying out machine for the accurate spacing of holes -- The base line system of drawings -- Other methods of spacing holes -- The master plate MILLING Early development of the milling machine -- Advantages of the constant-speed drive as applied to milling machines -- Vertical-spindle milling machines -- Types of milling cutters -- Uses of the milling machine -- The rotary planter -- The profiling machine -- The cam-cutting machine -- The screw-thread milling machine -- The milling cutter grinder. GEAR CUTTING Types of drilling machines -- Jigs and their uses -- Gang multiple spindle and station drilling machines -- The laying out machine for the accurate spacing of holes -- The base line system of drawings -- Other methods of spacing holes -- The master plate GRINDING Early development of the grinding machine -- Rough turning and finish grinding -- Uses of the grinding machine -- The planetary grinding machine -- The surface grinding machine From the INTRODUCTION: The object of this volume is to show how the problems of the shop are attacked and solved, not to show how machine tools are operated. This plan necessitates giving considerable attention to precision work, which in turn emphasizes the intellectual character of the work -- a feature which cannot fail to impress the reader and give him increased respect for those who are responsible for the methods and solutions herein set forth. These methods relate largely to the work of the tool maker, which has now reached a stage of development which almost entitles it to be called a profession. In this tool making is unique among occupations commonly called manual. Its development to the point where manual skill alone is helpless is a matter of the past fifty or sixty years and the development is one the like of which was never seen before. An attempt has been made to give credit for the leading inventions which mark the development of the machine shop. The author is well aware that in doing this he is treading on dangerous ground, as few things are more difficult than the apportionment of credit for these things. For this there are several reasons. Frequently, the first appearance of an invention is in such shadowy form as to make the identification of its origin difficult and even impossible. Frequently great inventions are of a composite character -- different elements being supplied by different men -- and in many cases of this kind the various elements are useless until combined by some one who does nothing else. Frequently the original suggestion came at a time when the collateral arts were not sufficiently developed to make the use of the invention possible, and it had to be reinvented at a later date. In such cases it is a subject of dispute which inventor is entitled to the greater credit. Some consider the chief credit due to him who made the effective invention, as it is certainly to him that the world is indebted for its use. In many cases this is just and proper because of the fight at first with inertia, and later with infringers with often in the end defeat and despair and the passing on of the…. From the Preface: PREFACE While the printed page cannot take the place of personal experience, there is, nevertheless, a great fund of information regarding tools, methods and processes that can be acquired from the printed page more effectively than from any other source. Effective as the " picking up" process is as regards the things picked up, it passes by many which are equally important and it has, at best, no logical order or sequence, the information so gathered being unassorted, fragmentary and incomplete. Few machine shops make use of more than a small fraction of the methods which are herein explained and which the properly informed should know but the learning of which commonly requires half a lifetime. While many of the methods shown are the commonplaces of the experienced mechanic, they have not, heretofore, been gathered together in print, and still less have their underlying principles or their mutual relationships been explained for the use of beginners. It is to the explanation of these things that the printed page is best adapted and to which these pages are chiefly devoted. The volume comprises the substance of the lectures which the author has presented to the students in mechanical engineer-ing at Columbia University for the past three years. It has been prepared in the belief, which is shared by friends who have been consulted, that it would prove useful elsewhere, in trade as well as engineering schools and to apprentices. The volume presupposes no more than a reasonable familiarity with the more common machine tools, their general construction, uses and fields of application; in other words such a degree of mechanical intelligence as should be acquired by an apprentice in serving one or, at most, two years in any modern machine shop.

Condition

Used :

An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections.

Seller Notes

“This book is an ORIGINAL, not a reproduction. It is in very good condition: the covers are soiled and slightly edgeworn, especially at the corners. There is a one inch tear at the top spine, back. The pages are clean and free of marks and underlining. The binding is not quite tight, but nearly so, with no cracks, and the flyleaves are fully intact and bound. There is no evidence of yellowing or foxing.”