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Metal Spinning

Chapter 18: FOOTNOTES
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About This Book

The text describes the craft and practice of forming sheet metal into hollow circular shapes by spinning on a lathe, outlining when spinning is preferable to die work for small runs, experimental pieces, or complex shapes. It explains the spinning lathe and components such as the T-rest and revolving tail-center, discusses speed selection and how metal type and thickness affect it, and surveys hand tools, forms, and sectional chucks used to shape and remove shells. Materials and typical applications are noted, and practical advice on form construction and production trade-offs rounds out the procedural guidance.

OUTLINE OF A COURSE IN SHOP AND DRAFTING-ROOM
MATHEMATICS, MECHANICS, MACHINE DESIGN
AND SHOP PRACTICE

Any intelligent man engaged in mechanical work can acquire a well-rounded mechanical education by using as a guide in his studies the outline of the course in mechanical subjects given below. The course is laid out so as to make it possible for a man of little or no education to go ahead, beginning wherever he finds that his needs begin. The course is made up of units so that it may be followed either from beginning to end; or the reader may choose any specific subject which may be of especial importance to him.

Preliminary Course in Arithmetic

Jig Sheets 1A to 5A:—Whole Numbers: Addition, Subtraction, Multiplication, Division, and Factoring.

Jig Sheets 6A to 15A:—Common Fractions and Decimal Fractions.

Shop Calculations

Reference Series No. 18. Shop Arithmetic for the Machinist.

Reference Series No. 52. Advanced Shop Arithmetic for the Machinist.

Reference Series No. 53. Use of Logarithmic Tables.

Reference Series Nos. 54 and 55. Solution of Triangles.

Data Sheet Series No. 16. Mathematical Tables. A book for general reference.

Drafting-room Practice

Reference Series No. 2. Drafting-room Practice.

Reference Series No. 8. Working Drawings and Drafting-room Kinks.

Reference Series No. 33. Systems and Practice of the Drafting-room.

General Shop Practice

Reference Series No. 10. Examples of Machine Shop Practice.

Reference Series No. 7. Lathe and Planer Tools.

Reference Series No. 25. Deep Hole Drilling.

Reference Series No. 38. Grinding and Grinding Machines.

Reference Series No. 48. Files and Filing.

Reference Series No. 32. Screw Thread Cutting.

Data Sheet Series No. 1. Screw Threads. Tables relating to all the standard systems.

Data Sheet Series No. 2. Screws, Bolts and Nuts. Tables of standards.

Data Sheet Series Nos. 10 and 11. Machine Tool Operation. Tables relating to the operation of lathes, screw machines, milling machines, etc.

Reference Series Nos. 50 and 51. Principles and Practice of Assembling Machine Tools.

Reference Series No. 57. Metal Spinning.

Jigs and Fixtures

Reference Series Nos. 41, 42 and 43. Jigs and Fixtures.

Reference Series No. 3. Drill Jigs.

Reference Series No. 4. Milling Fixtures.

Punch and Die Work

Reference Series No. 6. Punch and Die Work.

Reference Series No. 13. Blanking Dies.

Reference Series No. 26. Modern Punch and Die Construction.

Tool Making

Reference Series No. 64. Gage Making and Lapping.

Reference Series No. 21. Measuring Tools.

Reference Series No. 31. Screw Thread Tools and Gages.

Data Sheet Series No. 3. Taps and Threading Dies.

Data Sheet Series No. 4. Reamers, Sockets, Drills, and Milling Cutters.

Hardening and Tempering

Reference Series No. 46. Hardening and Tempering.

Reference Series No. 63. Heat Treatment of Steel.

Blacksmith Shop Practice and Drop Forging

Reference Series No. 44. Machine Blacksmithing.

Reference Series No. 61. Blacksmith Shop Practice.

Reference Series No. 45. Drop Forging.

Automobile Construction

Reference Series No. 59. Machines, Tools and Methods of Automobile Manufacture.

Reference Series No. 60. Construction and Manufacture of Automobiles.

Theoretical Mechanics

Reference Series No. 5. First Principles of Theoretical Mechanics.

Reference Series No. 19. Use of Formulas in Mechanics.

Gearing

Reference Series No. 15. Spur Gearing.

Reference Series No. 37. Bevel Gearing.

Reference Series No. 1. Worm Gearing.

Reference Series No. 20. Spiral Gearing.

Data Sheet Series No. 5. Spur Gearing. General reference book containing tables and formulas.

Data Sheet Series No. 6. Bevel, Spiral and Worm Gearing. General reference book containing tables and formulas.

General Machine Design

Reference Series No. 9. Designing and Cutting Cams.

Reference Series No. 11. Bearings.

Reference Series No. 56. Ball Bearings.

Reference Series No. 58. Helical and Elliptic Springs.

Reference Series No. 17. Strength of Cylinders.

Reference Series No. 22. Calculations of Elements of Machine Design.

Reference Series No. 24. Examples of Calculating Designs.

Reference Series No. 40. Flywheels.

Data Sheet Series No. 7. Shafting, Keys and Keyways.

Data Sheet Series No. 8. Bearings, Couplings, Clutches, Crane Chain and Hooks.

Data Sheet Series No. 9. Springs, Slides and Machine Details.

Data Sheet Series No. 19. Belt, Rope and Chain Drives.

Machine Tool Design

Reference Series No. 14. Details of Machine Tool Design.

Reference Series No. 16. Machine Tool Drives.

Crane Design

Reference Series No. 23. Theory of Crane Design.

Reference Series No. 47. Design of Electric Overhead Cranes.

Reference Series No. 49. Girders for Electric Overhead Cranes.

Steam and Gas Engine Design

Reference Series Nos. 67 to 72, inclusive. Steam Boilers, Engines, Turbines and Accessories.

Data Sheet Series No. 15. Heat, Steam, Steam and Gas Engines.

Data Sheet Series No. 13. Boilers and Chimneys.

Reference Series No. 65. Formulas and Constants for Gas Engine Design.

Special Course in Locomotive Design

Reference Series No. 27. Boilers, Cylinders, Throttle Valve, Piston and Piston Rod.

Reference Series No. 28. Theory and Design of Stephenson and Walschaert’s Valve Motion.

Reference Series No. 29. Smokebox, Frames and Driving Machinery.

Reference Series No. 30. Springs, Trucks, Cab and Tender.

Data Sheet Series No. 14. Locomotive and Railway Data.

Dynamos and Motors

Reference Series No. 34. Care and Repair of Dynamos and Motors.

Data Sheet Series No. 20. Wiring Diagrams, Heating and Ventilation, and Miscellaneous Tables.

Reference Series Nos. 73 to 78, inclusive. Principles and Applications of Electricity.

Heating and Ventilation

Reference Series No. 39. Fans, Ventilation and Heating.

Reference Series No. 66. Heating and Ventilating Shops and Offices.

Data Sheet Series No. 20. Wiring Diagrams, Heating and Ventilation, and Miscellaneous Tables.

Iron and Steel

Reference Series No. 36. Iron and Steel.

Reference Series No. 62. Testing the Hardness and Durability of Metals.

General Reference Books

Reference Series No. 35. Tables and Formulas for Shop and Drafting-room.

Data Sheet Series No. 12. Pipe and Pipe Fittings.

Data Sheet Series No. 17. Mechanics and Strength of Materials.

Data Sheet Series No. 18. Beam Formulas and Structural Design.

Data Sheet Series No. 20. Wiring Diagrams, Heating and Ventilation and Miscellaneous Tables.

MACHINERY’S REFERENCE BOOKS

This treatise is one unit in a comprehensive Series of Reference books originated by Machinery, and including an indefinite number of compact units, each covering one subject thoroughly. The whole series comprises a complete working library of mechanical literature. The price of each book is 25 cents (one shilling) delivered anywhere in the world.

LIST OF REFERENCE BOOKS

No. 1. Worm Gearing.—Calculating Dimensions; Hobs; Location of Pitch Circle; Self-Locking Worm Gearing, etc.

No. 2. Drafting-Room Practice.—Systems; Tracing, Lettering and Mounting.

No. 3. Drill Jigs.—Principles of Drill Jigs; Jig Plates; Examples of Jigs.

No. 4. Milling Fixtures.—Principles of Fixtures; Examples of Design.

No. 5. First Principles of Theoretical Mechanics.

No. 6. Punch and Die Work.—Principles of Punch and Die Work; Making and Using Dies; Die and Punch Design.

No. 7. Lathe and Planer Tools.—Cutting Tools; Boring Tools; Shape of Standard Shop Tools; Forming Tools.

No. 8. Working Drawings and Drafting-Room Kinks.

No. 9. Designing and Cutting Cams.—Drafting of Cams; Cam Curves; Cam Design and Cam Cutting.

No. 10. Examples of Machine Shop Practice.—Cutting Bevel Gears; Making a Worm-Gear; Spindle Construction.

No. 11. Bearings.—Design of Bearings; Causes of Hot Bearings; Alloys for Bearings; Friction and Lubrication.

No. 12. Out of print.

No. 13. Blanking Dies.—Making Blanking Dies; Blanking and Piercing Dies; Split Dies; Novel Ideas in Die Making.

No. 14. Details of Machine Tool Design.—Cone Pulleys and Belts; Strength of Countershafts; Tumbler Gear Design; Faults of Iron Castings.

No. 15. Spur Gearing.—Dimensions; Design; Strength; Durability.

No. 16. Machine Tool Drives.—Speeds and Feeds; Single Pulley Drives; Drives for High Speed Cutting Tools.

No. 17. Strength of Cylinders.—Formulas, Charts, and Diagrams.

No. 18. Shop Arithmetic for the Machinist.—Tapers; Change Gears; Cutting Speeds; Feeds; Indexing; Gearing for Cutting Spirals; Angles.

No. 19. Use of Formulas in Mechanics.—With numerous applications.

No. 20. Spiral Gearing.—Rules, Formulas, and Diagrams, etc.

No. 21. Measuring Tools.—History of Standard Measurements; Calipers; Compasses; Micrometer Tools; Protractors.

No. 22. Calculation of Elements of Machine Design.—Factor of Safety; Strength of Bolts; Riveted Joints; Keys and Keyways; Toggle-joints.

No. 23. Theory of Crane Design.—Jib Cranes; Shafts, Gears, and Bearings; Force to Move Crane Trolleys; Pillar Cranes.

No. 24. Examples of Calculating Designs.—Charts in Designing; Punch and Riveter Frames; Shear Frames; Billet and Bar Passes; etc.

No. 25. Deep Hole Drilling.—Methods of Drilling; Construction of Drills.

No. 26. Modern Punch and Die Construction.—Construction and Use of Sub-press Dies; Modern Blanking Die Construction; Drawing and Forming Dies.

No. 27. Locomotive Design, Part I.—Boilers, Cylinders, Pipes and Pistons.

No. 28. Locomotive Design, Part II.—Stephenson and Walschaerts Valve Motions; Theory, Calculation and Design.

No. 29. Locomotive Design, Part III.—Smokebox; Exhaust Pipe; Frames; Cross-heads; Guide Bars; Connecting-rods; Crank-pins; Axles; Driving-wheels.

No. 30. Locomotive Design, Part IV.—Springs, Trucks, Cab and Tender.

No. 31. Screw Thread Tools and Gages.

No. 32. Screw Thread Cutting.—Lathe Change Gears; Thread Tools; Kinks.

No. 33. Systems and Practice of the Drafting-Room.

No. 34. Care and Repair of Dynamos and Motors.

No. 35. Tables and Formulas for Shop and Drafting-Room.—The Use of Formulas; Solution of Triangles; Strength of Materials; Gearing; Screw Threads; Tap Drills; Drill Sizes; Tapers; Keys, etc.

No. 36. Iron and Steel.—Principles of Manufacture and Treatment.

No. 37. Bevel Gearing.—Rules and Formulas; Examples of Calculation; Tooth Outlines; Strength and Durability; Design; Methods of Cutting Teeth.

No. 38. Out of print. See No. 98.

No. 39. Fans, Ventilation and Heating.—Fans; Heaters; Shop Heating.

No. 40. Fly-Wheels.—Their Purpose, Calculation and Design.

No. 41. Jigs and Fixtures, Part I.—Principles of Design; Drill Jig Bushings; Locating Points; Clamping Devices.

No. 42. Jigs and Fixtures, Part II.—Open and Closed Drill Jigs.

No. 43. Jigs and Fixtures, Part III.—Boring and Milling Fixtures.

No. 44. Machine Blacksmithing.—Systems, Tools and Machines used.

No. 45. Drop Forging.—Lay-out of Plant; Methods of Drop Forging; Dies.

No. 46. Hardening and Tempering.—Hardening Plants; Treating High-Speed Steel; Hardening Gages.

No. 47. Electric Overhead Cranes.—Design and Calculation.

No. 48. Files and Filing.—Types of Files; Using and Making Files.

No. 49. Girders for Electric Overhead Cranes.

No. 50. Principles and Practice of Assembling Machine Tools, Part I.

No. 51. Principles and Practice of Assembling Machine Tools, Part II.

No. 52. Advanced Shop Arithmetic for the Machinist.

No. 53. Use of Logarithms and Logarithmic Tables.

No. 54. Solution of Triangles, Part I.—Methods, Rules and Examples.

No. 55. Solution of Triangles, Part II.—Tables of Natural Functions.

No. 56. Ball Bearings.—Principles of Design and Construction.

No. 57. Metal Spinning.—Machines, Tools and Methods Used.

No. 58. Helical and Elliptic Springs.—Calculation and Design.

No. 59. Machines, Tools and Methods of Automobile Manufacture.

No. 60. Construction and Manufacture of Automobiles.

No. 61. Blacksmith Shop Practice.—Model Blacksmith Shop; Welding; Forging of Hooks and Chains; Miscellaneous.

No. 62. Hardness and Durability Testing of Metals.

No. 63. Heat Treatment of Steel.—Hardening, Tempering, Case-Hardening.

No. 64. Gage Making and Lapping.

No. 65. Formulas and Constants for Gas Engine Design.

No. 66. Heating and Ventilation of Shops and Offices.

No. 67. Boilers.

No. 68. Boiler Furnaces and Chimneys.

No. 69. Feed Water Appliances.

No. 70. Steam Engines.

No. 71. Steam Turbines.

No. 72. Pumps, Condensers, Steam and Water Piping.

No. 73. Principles and Applications of Electricity, Part I.—Static Electricity; Electrical Measurements; Batteries.

No. 74. Principles and Applications of Electricity, Part II.—Magnetism; Electro-Magnetism; Electro-Plating.

No. 75. Principles and Applications of Electricity, Part III.—Dynamos; Motors; Electric Railways.

No. 76. Principles and Applications of Electricity, Part IV.—Electric Lighting.

No. 77. Principles and Applications of Electricity, Part V.—Telegraph and Telephone.

No. 78. Principles and Applications of Electricity, Part VI.—Transmission of Power.

No. 79. Locomotive Building, Part I.—Main and Side Rods.

No. 80. Locomotive Building, Part II.—Wheels; Axles; Driving Boxes.

No. 81. Locomotive Building, Part III.—Cylinders and Frames.

No. 82. Locomotive Building, Part IV.—Valve Motion.

No. 83. Locomotive Building, Part V.—Boiler Shop Practice.

No. 84. Locomotive Building, Part VI.—Erecting.

No. 85. Mechanical Drawing, Part I.—Instruments; Materials; Geometrical Problems.

No. 86. Mechanical Drawing, Part II.—Projection.

No. 87. Mechanical Drawing, Part III.—Machine Details.

No. 88. Mechanical Drawing, Part IV.—Machine Details.

No. 89. The Theory of Shrinkage and Forced Fits.

No. 90. Railway Repair Shop Practice.

No. 91. Operation of Machine Tools.—The Lathe, Part I.

No. 92. Operation of Machine Tools.—The Lathe, Part II.

No. 93. Operation of Machine Tools.—Planer, Shaper, Slotter.

No. 94. Operation of Machine Tools.—Drilling Machines.

No. 95. Operation of Machine Tools.—Boring Machines.

No. 96. Operation of Machine Tools.—Milling Machines, Part I.

No. 97. Operation of Machine Tools.—Milling Machines, Part II.

No. 98. Operation of Machine Tools.—Grinding Machines.

No. 99. Automatic Screw Machine Practice, Part I.—Operation of the Brown & Sharpe Automatic Screw Machine.

No. 100. Automatic Screw Machine Practice, Part II.—Designing and Cutting Cams for the Automatic Screw Machine.

No. 101. Automatic Screw Machine Practice, Part III.—Circular Forming and Cut-off Tools.

No. 102. Automatic Screw Machine Practice, Part IV.—External Cutting Tools.

No. 103. Automatic Screw Machine Practice, Part V.—Internal Cutting Tools.

No. 104. Automatic Screw Machine Practice, Part VI.—Threading Operations.

No. 105. Automatic Screw Machine Practice, Part VII.—Knurling Operations.

No. 106. Automatic Screw Machine Practice, Part VIII.—Cross Drilling, Burring and Slotting Operations.

ADDITIONAL TITLES WILL BE ANNOUNCED IN MACHINERY FROM TIME TO TIME

MACHINERY’S DATA SHEET SERIES

Machinery’s Data Sheet Books include the well-known series of Data Sheets originated by Machinery, and issued monthly as supplements to the publication; of these Data Sheets over 500 have been published, and 6,000,000 copies sold. Revised and greatly amplified, they are now presented in book form, kindred subjects being grouped together. The purchaser may secure either the books on those subjects in which he is specially interested, or, if he pleases, the whole set at one time. The price of each book is 25 cents (one shilling) delivered anywhere in the world.

CONTENT OF DATA SHEET BOOKS

No. 1. Screw Threads.—United States, Whitworth, Sharp V- and British Association Standard Threads; Briggs Pipe Thread; Oil Well Casing Gages; Fire Hose Connections; Acme Thread; Worm Threads; Metric Threads; Machine, Wood, and Lag Screw Threads; Carriage Bolt Threads, etc.

No. 2. Screws, Bolts and Nuts.—Fillister-head, Square-head, Headless, Collar-head and Hexagon-head Screws; Standard and Special Nuts; T-nuts, T-bolts and Washers; Thumb Screws and Nuts; A. L. A. M. Standard Screws and Nuts; Machine Screw Heads; Wood Screws; Tap Drills; Lock Nuts; Eye-bolts, etc.

No. 3. Taps and Dies.—Hand, Machine, Tapper and Machine Screw Taps; Taper Die Taps; Sellers Hobs; Screw Machine Taps; Straight and Taper Boiler Taps; Stay-bolt, Washout, and Patch-bolt Taps; Pipe Taps and Hobs; Solid Square, Round Adjustable and Spring Screw Threading Dies.

No. 4. Reamers, Sockets, Drills and Milling Cutters.—Hand Reamers; Shell Reamers and Arbors; Pipe Reamers; Taper Pins and Reamers; Brown & Sharpe, Morse and Jarno Taper Sockets and Reamers; Drills; Wire Gages; Milling Cutters; Setting Angles for Milling Teeth in End Mills and Angular Cutters, etc.

No. 5. Spur Gearing.—Diametral and Circular Pitch; Dimensions of Spur Gears; Tables of Pitch Diameters; Odontograph Tables; Rolling Mill Gearing; Strength of Spur Gears; Horsepower Transmitted by Cast-iron and Rawhide Pinions; Design of Spur Gears; Weight of Cast-iron Gears; Epicyclic Gearing.

No. 6. Bevel, Spiral and Worm Gearing.—Rules and Formulas for Bevel Gears; Strength of Bevel Gears; Design of Bevel Gears; Rules and Formulas for Spiral Gearing; Tables Facilitating Calculations; Diagram for Cutters for Spiral Gears; Rules and Formulas for Worm Gearing, etc.

No. 7. Shafting, Keys and Keyways.—Horsepower of Shafting; Diagrams and Tables for the Strength of Shafting; Forcing, Driving, Shrinking and Running Fits; Woodruff Keys; United States Navy Standard Keys; Gib Keys; Milling Keyways; Duplex Keys.

No. 8. Bearings, Couplings, Clutches, Crane Chain and Hooks.—Pillow Blocks; Babbitted Bearings; Ball and Roller Bearings; Clamp Couplings; Plate Couplings; Flange Couplings; Tooth Clutches; Crab Couplings; Cone Clutches; Universal Joints; Crane Chain; Chain Friction; Crane Hooks; Drum Scores.

No. 9. Springs, Slides and Machine Details.—Formulas and Tables for Spring Calculations; Machine Slides; Machine Handles and Levers; Collars; Hand Wheels; Pins and Cotters; Turn-buckles, etc.

No. 10. Motor Drive, Speeds and Feeds, Change Gearing, and Boring Bars.—Power required for Machine Tools; Cutting Speeds and Feeds for Carbon and High-speed Steel; Screw Machine Speeds and Feeds; Heat Treatment of High-speed Steel Tools; Taper Turning; Change Gearing for the Lathe; Boring Bars and Tools etc.

No. 11. Milling Machine Indexing, Clamping Devices and Planer Jacks.—Tables for Milling Machine Indexing; Change Gears for Milling Spirals; Angles for setting Indexing Head when Milling Clutches; Jig Clamping Devices; Straps and Clamps; Planer Jacks.

No. 12. Pipe and Pipe Fittings.—Pipe Threads and Gages; Cast-iron Fittings; Bronze Fittings; Pipe Flanges; Pipe Bends; Pipe Clamps and Hangers; Dimensions of Pipe for Various Services, etc.

No. 13. Boilers and Chimneys.—Flue Spacing and Bracing for Boilers; Strength of Boiler Joints; Riveting; Boiler Setting; Chimneys.

No. 14. Locomotive and Railway Data.—Locomotive Boilers; Bearing Pressures for Locomotive Journals; Locomotive Classifications; Rail Sections; Frogs, Switches and Cross-overs; Tires; Tractive Force; Inertia of Trains; Brake Levers; Brake Rods, etc.

No. 15. Steam and Gas Engines.—Saturated Steam; Steam Pipe Sizes; Steam Engine Design; Volume of Cylinders; Stuffing Boxes; Setting Corliss Engine Valve Gears; Condenser and Air Pump Data; Horsepower of Gasoline Engines; Automobile Engine Crankshafts, etc.

No. 16. Mathematical Tables.—Squares of Mixed Numbers; Functions of Fractions; Circumference and Diameters of Circles; Tables for Spacing off Circles; Solution of Triangles; Formulas for Solving Regular Polygons; Geometrical Progression, etc.

No. 17. Mechanics and Strength of Materials.—Work; Energy; Centrifugal Force; Center of Gravity; Motion; Friction; Pendulum; Falling Bodies; Strength of Materials; Strength of Flat Plates; Ratio of Outside and Inside Radii of Thick Cylinders, etc.

No. 18. Beam Formulas and Structural Design.—Beam Formulas; Sectional Moduli of Structural Shapes; Beam Charts; Net Areas of Structural Angles; Rivet Spacing; Splices for Channels and I-beams; Stresses in Roof Trusses, etc.

No. 19. Belt, Rope and Chain Drives.—Dimensions of Pulleys; Weights of Pulleys; Horsepower of Belting; Belt Velocity; Angular Belt Drives; Horsepower transmitted by Ropes; Sheaves for Rope Drive; Bending Stresses in Wire Ropes; Sprockets for Link Chains; Formulas and Tables for Various Classes of Driving Chain.

No. 20. Wiring Diagrams, Heating and Ventilation, and Miscellaneous Tables.—Typical Motor Wiring Diagrams; Resistance of Round Copper Wire; Rubber Covered Cables; Current Densities for Various Contacts and Materials; Centrifugal Fan and Blower Capacities; Hot Water Main Capacities; Miscellaneous Tables: Decimal Equivalents, Metric Conversion Tables, Weights and Specific Gravity of Metals, Weights of Fillets, Drafting-room Conventions, etc.

Machinery, the monthly mechanical journal, originator of the Reference and Data Sheet Series, is published in four editions—the Shop Edition, $1.00 a year; the Engineering Edition, $2.00 a year; the Railway Edition, $2.00 a year, and the Foreign Edition, $3.00 a year.

The Industrial Press, Publishers of Machinery,

49-55 Lafayette Street, New York City, U. S. A.


FOOTNOTES

[1] Machinery, December, 1909.

[2] Machinery, March and April, 1910.


Transcriber’s Notes:

A span of text between pages 30 and 31 is missing in the original of this book.

The page of advertisements preceding the title page has been moved to the end of this book.

Variations in spelling and hyphenation remain as in the original unless noted below.

  • Page 20, period added after “Fig” (“In Fig. 18 is shown an example”).
  • Page 33, superfluous word “to” removed (“B is a good one to use”).
  • Page 34, “Fig, 39” changed to “Fig. 39.”
  • Ads section, “books” changed to “book” (“The price of each book”).
  • Ads section, period added after “Locomotive Building, Part V.”
  • Ads section, period added after “Automatic Screw Machine Practice, Part V.”
  • Ads section, “Stuffiing” changed to “Stuffing” (“Volume of Cylinders; Stuffing Boxes”).
  • Ads section, period added after “No.” (“Reference Series No. 64.”).

Original scans of this book can be found here.