Part I. Design Subtypes Part II. Die Varieties
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
How to Collect Coins a Fun, Useful, and Educational Guide to the Hobby
$4.95 Valuable Tips & Information! LITTLETON’S HOW TO CCOLLECTOLLECT CCOINSOINS ✓ Find the answers to the top 8 questions about coins! ✓ Are there any U.S. coin types you’ve never heard of? ✓ Learn about grading coins! ✓ Expand your coin collecting knowledge! ✓ Keep your coins in the best condition! ✓ Learn all about the different U.S. Mints and mint marks! WELCOME… Dear Collector, Coins reflect the culture and the times in which they were produced, and U.S. coins tell the story of America in a way that no other artifact can. Why? Because they have been used since the nation’s beginnings. Pathfinders and trendsetters – Benjamin Franklin, Robert E. Lee, Teddy Roosevelt, Marilyn Monroe – you, your parents and grandparents have all used coins. When you hold one in your hand, you’re holding a tangible link to the past. David M. Sundman, You can travel back to colonial America LCC President with a large cent, the Civil War with a two-cent piece, or to the beginning of America’s involvement in WWI with a Mercury dime. Every U.S. coin is an enduring legacy from our nation’s past! Have a plan for your collection When many collectors begin, they may want to collect everything, because all different coin types fascinate them. But, after gaining more knowledge and experience, they usually find that it’s good to have a plan and a focus for what they want to collect. Although there are various ways (pages 8 & 9 list a few), building a complete date and mint mark collection (such as Lincoln cents) is considered by many to be the ultimate achievement. -
One Company, Many Solutions BC062019 Smart Agriculture & Construction One Company, Many Solutions
Smart Agriculture & Construction Electrification Technology One Company, Many Solutions BC062019 Smart Agriculture & Construction One Company, Many Solutions Thermal Solutions Aavid, Thermal Division of Boyd Corporation, Aavid meets the challenge of thermal control Applications: o Battery Module Cooling o Inverters & DC/DC Converters Integration of Technology o Computer Systems for Agriculture and Construction OEMs Autonomous Farming are integrating more technology o IGBT Cooling features, like communications o Thermal Management for systems, on board processing for Self-driving computers sensor arrays, and system Sensors and LiDAR optimization electronic units. To Navigation address the thermal challenges of Telematics Systems connectivity and electrification, Boyd o LED Lighting designs and manufactures durable thermal solutions & systems for Technologies: high-performance cooling. o Vapor Chambers o Thermal Interface Materials Thermal Management o Heat Pipes By integrating and optimizing a wide o Liquid Cooling Systems range of cooling technologies, Aavid o Heat Shielding engineers develop lighter, more reliable thermal systems to meet your application needs, including power conversion solutions, heat shielding, and LED cooling. Smart Agriculture & Construction One Company, Many Solutions Precision Converting Solutions Boyd is an innovative precision converter with extensive experience in the Agriculture & Construction Industries ranging from display protection and sealing for sensor systems to ergonomic molds for internal cabin control systems. We turn concepts into components. From design to manufacturing to packaging and logistics, Boyd provides full-service solutions that transform your innovative ideas into reality. Applications: Quick-Turn Prototyping o HMI and Display Films Our CNC Laser, Knife, and o Graphite Heat Spreaders for Displays Waterjet die-less prototyping o Screen & Surface Protectors systems, with Flashnesting o Custom Hoses software, allow us to quickly o O-Rings convert drawings to prototype parts without the need of tooling. -
2.810 Manufacturing Processes and Systems
2.810 manufacturing processes and systems Prof. Tim Gutowski, [email protected] September 4, 2013 Prereq: 2.001, 2.006, 2.008 Hands-on Experience Processes to Systems Today’s Agenda • Business – You – Us – Class/Project • Concepts – Manufacturing Enterprise – Processes – Communication Tools Please fill out information form •Basic information •Experience in shop •Experience in mfg 52 students Pre-registered for 2.810 1. Artiles,Jessica A. 1. Modak,Ashin Pramod 2. Bhadauria,Anubha-Sin 2. Modi,Vrajesh Y 3. Chandar,Arjun Subram 3. Morris,Taylor J. 4. Chang,Woolim 4. Olle,Chase R. 5. Charpentier,Erik Leo 5. Pak,Nikita 6. Chawla,Yugank 6. Pan,Yichao 7. Chiang,Jerry Kao 7. Penalver-Aguila,Llui 8. Churchill,Hugh Edwar 8. Pharr,Vanea Ryann 9. Colucci,Lina Avancin 9. Pombrol,Christopher 10. Garcia,Jose Manuel 10. Puszko,Gregory D. 11. Georgiadis,Vasilis 11. Ramos,Joshua D 12. Ghosh,Sourobh 12. Ranjan,Aditya 13. Graves,Carmen M 13. Reed,Christian R. 14. Guan,Dong 14. Rodrigo,Michael 15. Jain,Sonam 15. Secundo,Rafael Garci 16. Jamerson,Holly M. 16. Sedore,Blake William 17. Jiang,Sheng 17. Shah,Adhvait M. 18. Kimball,Peter Evan 18. Solomon,Brian Richmo 19. Knodel,Philip Clinto 19. Sondej,Nicholas Matt 20. Kuan,Jiun-Yih 20. Sun,Xu 21. Larson,Richard W 21. Swamy,Tushar 22. Llorens - Bonilla,Ba 22. Taylor,David Donald 23. Lopez,Saul 23. Thomas,Dale Arlingto 24. Mangan,Esther Hu 24. Wu,Faye Y 25. Mantzavinou,Aikateri 25. Xu,Ruize 26. McMullin,Nathan Keit 26. deGuzman,Jeremy Erne Bill Buckley [email protected] Basic info can be found on the 2.810 webpage web page: http://web.mit.edu/2.810/www Instructor: Prof. -
What Are the 100 Greatest U.S. Coins?
Liberty Seated Collectors Club http://www.numismalink.com/lscc.html What are the 100 Greatest U.S. Coins? By Robert A. Izydore In Issue #88 of the journal Weimar White described the Liberty Seated coins in the book 100 Greatest U.S. Coins by Jeff Garrett and Ron Guth. This interesting book contains nice photographs of the listed coins and includes some good background information about them. The Numismatic Literary Guild and the Professional Numismatists Guild (PNG) both chose this book as their best numismatic book for 2003. The top 20 coins were ranked by 84 PNG members while the remaining 80 were ranked by the authors. The PNG members were given a list of the top 100 greatest coins and asked to rank them. The members had the option of adding any coins to the list that they thought should be included. White’s summary stated that the concept of greatness was based on the factors of rarity, value, quality, popularity, beauty and history. It was nice to see that the authors ranked 16 Liberty Seated coins among the 100 greatest U.S. coins in their book. The top three ranked coins were the 1804 silver dollar, the 1913 Liberty Head nickel, and the 1933 double eagle, respectively. White pointed out that greatness is a subjective quality, and I wholeheartedly agree. However, as I look at the coins ranked at the top of the list, it is apparent that these are the coins that sell for the highest prices at auction and in private sales. In other words the rank given to a coin was heavily skewed by its value. -
Introduction and Classification of Forging Processes
NPTEL - Mechanical Engineering - Forming Introduction and classification of forging processes 1.1 Introduction: Bulk deformation processes involve shaping of materials to finished products which have small surface area to thickness or surface area to volume ratio. Sheet metal forming produces parts having large surface area to thickness ratio. In sheet metal forming thickness variations are not desirable. Examples for sheet metal forming are: beverage cans, automobile body etc. Bulk forming processes may be primary processes such as rolling of ingot to blooms or billets, in which the cast metal is formed into semi-finished raw material. In secondary forming, the raw materials, such as blooms, billets are converted into finished parts such as gears, wheels, spanners etc. Rolling, forging, extrusion and drawing are bulk forming processes. The present module describes the salient aspects of forging process. 1.2 Forging: In ancient times, people employed forging for making coins, jewelry, weapons, Forging is a deformation processing of materials through compressive stress. It is carried out either hot or cold. Hot forging is done at temperatures above recrystallization temperatures, typically 0.6 Tm, or above, where Tm is melting temperature. Warm forging is done in the temperature range: 0.3 Tm to 0.5 Tm. Cold forging has advantages such as good surface finish, high strength and greater accuracy. Hot forging requires lower loads, because flow stress gets reduced at higher temperatures. Strain rates in hot working may be high – 0.5 to 500 s-1. Strains in hot forging are also high – true strains of 2 to 4. Are common. Typical applications of forging include bolts, disks, gears, turbine disk, crank shaft, connecting rod, valve bodies, small components for hydraulic circuits etc. -
Manufacturing Technology I Unit I Metal Casting
MANUFACTURING TECHNOLOGY I UNIT I METAL CASTING PROCESSES Sand casting – Sand moulds - Type of patterns – Pattern materials – Pattern allowances – Types of Moulding sand – Properties – Core making – Methods of Sand testing – Moulding machines – Types of moulding machines - Melting furnaces – Working principle of Special casting processes – Shell – investment casting – Ceramic mould – Lost Wax process – Pressure die casting – Centrifugal casting – CO2 process – Sand Casting defects. UNIT II JOINING PROCESSES Fusion welding processes – Types of Gas welding – Equipments used – Flame characteristics – Filler and Flux materials - Arc welding equipments - Electrodes – Coating and specifications – Principles of Resistance welding – Spot/butt – Seam – Projection welding – Percusion welding – GS metal arc welding – Flux cored – Submerged arc welding – Electro slag welding – TIG welding – Principle and application of special welding processes – Plasma arc welding – Thermit welding – Electron beam welding – Friction welding – Diffusion welding – Weld defects – Brazing – Soldering process – Methods and process capabilities – Filler materials and fluxes – Types of Adhesive bonding. UNIT III BULK DEFORMATION PROCESSES Hot working and cold working of metals – Forging processes – Open impression and closed die forging – Characteristics of the process – Types of Forging Machines – Typical forging operations – Rolling of metals – Types of Rolling mills – Flat strip rolling – Shape rolling operations – Defects in rolled parts – Principle of rod and wire drawing – Tube drawing – Principles of Extrusion – Types of Extrusion – Hot and Cold extrusion – Equipments used. UNIT IV SHEET METAL PROCESSES Sheet metal characteristics – Typical shearing operations – Bending – Drawing operations – Stretch forming operations –– Formability of sheet metal – Test methods – Working principle and application of special forming processes – Hydro forming – Rubber pad forming – Metal spinning – Introduction to Explosive forming – Magnetic pulse forming – Peen forming – Super plastic forming. -
Metal Forming Practise
Metal Forming Practise Processes - Machines - Tools Bearbeitet von Heinz Tschätsch, A Koth 1. Auflage 2006. Buch. xii, 406 S. Hardcover ISBN 978 3 540 33216 9 Format (B x L): 17 x 24,2 cm Gewicht: 2230 g Weitere Fachgebiete > Technik > Produktionstechnik > Werkzeugbau schnell und portofrei erhältlich bei Die Online-Fachbuchhandlung beck-shop.de ist spezialisiert auf Fachbücher, insbesondere Recht, Steuern und Wirtschaft. Im Sortiment finden Sie alle Medien (Bücher, Zeitschriften, CDs, eBooks, etc.) aller Verlage. Ergänzt wird das Programm durch Services wie Neuerscheinungsdienst oder Zusammenstellungen von Büchern zu Sonderpreisen. Der Shop führt mehr als 8 Millionen Produkte. Contents Preface ................................................................................................................................ V Terms, symbols and units ................................................................................................. 1 Part I Metal forming and shearing processes ................................................................. 3 1 Types of production processes .............................................................................. 5 2 Terms and parameters of metal forming ............................................................. 7 2.1 Plastic (permanent) deformation ............................................................................... 7 2.2 Flow stress................................................................................................................ 8 2.3 Deformation resistance............................................................................................. -
Semantic Organization of Product Lifecycle Information Through a Modular Ontology
INTERNATIONAL JOURNAL OF CIRCUITS, SYSTEMS AND SIGNAL PROCESSING Volume 9, 2015 Semantic organization of product lifecycle information through a modular ontology Giulia Bruno exploited by SMEs. Studies estimated that information Abstract—It is known that one of the main reasons of the success retrieval is not efficient and around 50% of the available of manufacturing enterprises is their ability to design and maintain a knowledge is not stored in information systems [5]. coherent structure to represent their knowledge, especially the small In literature, a recent trend about manufacturing knowledge and medium sized enterprises (SMEs), which are not often organized management is the inclusion of semantic models, both to help to manage information efficiently. Several commercial PLM systems have been developed in the last years to help companies in the company in organizing and sharing their data, and to allow organizing their large amount of data, but they are rarely exploited the easy finding of information and its reuse. In fact, mainly due to the high cost and difficult customization. Recent trends ontologies make it possible to integrate information from in literature focused on the development of semantic knowledge different abstraction levels, and they improve knowledge management systems, both to help companies in organizing and capture and reuse [6]. Several ontologies have already been sharing their data and to allow the easy finding of information and its proposed for knowledge management in manufacturing, but reuse. The aim of this paper is to develop a knowledge management system to structure the product lifecycle knowledge of SMEs based they mainly develop semantic models to grant interoperability on a modular ontology. -
Curse Double Eagle
APR FEAT Double Eagle.lyt (R/O) 2/27/04 10:18 AM Page 1 ° CURSE OF THE DOUBLE EAGLE NEVER BEFORE HAS A SINGLE GOLD PIECE INSPIRED SUCH FEVERISH DESIRE AMONG MEN—OR ° HELD SUCH DISASTROUS CONSEQUENCES. A RARE LOOK AT THE WORLD’S MOST EXPENSIVE COIN BY BRYAN CHRISTY All eyes turn forward as David Redden, Digital counters loom above the stage to Sotheby’s vice chairman and top auctioneer, track the bidding in dollars, euros and mounts his pulpit. A silver-haired man with pounds. “This will not be a long sale,” Red- K large ears and dark eyes, he adjusts his den announces. “It will be a great moment.” microphone and picks up his gavel. It is July Redden’s specialty is selling the rarest of 30, 2002. A congregation of millionaires the rare. He has taken 130 crates of bones Y sits in rows of padded chairs for an auction and sold them as the most complete Tyran- more than half a century in the making. nosaurus rex in history. He has flogged Soviet There are no cheap seats tonight—it’s stand- space suits and capsules. He has even auc- M ing room only for the relative unfortunates tioned off the deed to a lunar rover that will crowded in the back of the main Sotheby’s most likely never return to earth. Most of all, C salesroom. In the gallery’s 12 private sky- though, he traffics in stories. boxes, a few guests have drawn the curtains. The key to selling rarities is provenance: Others sip wine in plain view. -
THE WORLD of COINS an Introduction to Numismatics
THE WORLD OF COINS An Introduction to Numismatics Jeff Garrett Table of Contents The World of Coins .................................................... Page 1 The Many Ways to Collect Coins .............................. Page 4 Series Collecting ........................................................ Page 6 Type Collecting .......................................................... Page 8 U.S. Proof Sets and Mint Sets .................................... Page 10 Commemorative Coins .............................................. Page 16 Colonial Coins ........................................................... Page 20 Pioneer Gold Coins .................................................... Page 22 Pattern Coins .............................................................. Page 24 Modern Coins (Including Proofs) .............................. Page 26 Silver Eagles .............................................................. Page 28 Ancient Coins ............................................................. Page 30 World Coins ............................................................... Page 32 Currency ..................................................................... Page 34 Pedigree and Provenance ........................................... Page 40 The Rewards and Risks of Collecting Coins ............. Page 44 The Importance of Authenticity and Grade ............... Page 46 National Numismatic Collection ................................ Page 50 Conclusion ................................................................. Page -
Draped Bust Half Cents (1800 - 1808)
FUNDAMENTAL RARE COIN GUIDE 418 W. Main St, Suite C Fairborn, OH 45324 By Appointment 937-878-8784 [email protected] This Fundamental Rare Coin Guide is just that, a fundamental guide to help identify coins in your possession and determine the relative (not absolute) value of coins within a series. This guide will help you sort valuable coins from less valuable coins. Many factors determine absolute value, such as condition, eye appeal, surface characteristics, etc. Absolute values of coins are determined using price guides, auction records, supply and demand factors among other components. This guide includes copper, nickel, and silver coins issued by the United States Mint which were commonly circulated for commercial purposes during our country’s history, is ordered from half cents to silver dollars, does not include United States gold coins. To use this guide examine your United States coin(s) and determine their denomination, date, and mintmark then go to the section in this guide where your denomination is displayed to see if it is listed. Match you coins with photographs to make certain you are in the correct section. Coins listed in “red” indicates coins usually worth at least $100. Dates listed in black are also quite scarce. Hopefully you find this guide to be useful. If you need assistance please feel free to contact us at 937-878-8784, via email at [email protected], or at our website www.coinologist.com. TABLE OF CONTENTS Liberty Cap Half Cents (1793)........................................................1 Draped Bust -
Take Five 10
TN105_112 3/13/03 5:14 PM Page 111 QUIZ QUARTERS Ⅲ MARILYN A. REBACK 1 2 3 4 5 6 7 8 9 Take Five 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 ASEBALL GREAT YOGI BERRA once said, “A nickel ain’t worth 36 37 38 B a dime anymore.” This may be 39 40 so, but some nickels are worth much more to collectors. You’ll find a lot of 41 42 them in this month’s crossword. 43 solution on page 96 Across 32. All Shield nickels were made in 15. Animal that gives the Indian Head 1. He created the Jefferson nickel this state nickel its other name 5. Counterfeit 33. “Don’t take any” of these nickels 17. Copper and nickel, for example 7. Woolworth’s famous ___ and dime 34. Amount of nickel in wartime issue 18. Number of steps on Monticello 8. Nickel’s size, compared to quarter 40. Where you should hold a nickel 21. Follows LIBERTY on Jefferson 10. About Uncirculated 41. Twenty nickels nickel 11. Designer of Liberty Head nickel; 42. A coin grade 23. Nickel model “Two Moons” or someone who trims your hair 43. In 1994 the Mint made proof nick- 24. Nickel re-engraved by a tramp 12. The buffalo on the nickel actually els with this finish 25. ____ Diamond, model for Buffalo is this Down reverse 13. Designer’s initials on today’s 26. Number of legs on collectable 1.