Universal Joints - Part 3: History and Terminology скачать в хорошем качестве

Universal Joints - Part 3: History and Terminology

Weber State University (WSU) - Automotive Technology Department - Transmission Lab. This is the third in a series of videos on universal joints, constant velocity joints, and driveshafts. In this episode, we look at the history and proper terminology of universal joints from Hieronymus Cardano and his 1557 swiveling gimbal, to Robert E. Hooke and his 1675 sundial, to Christopher Polhem's 1697 "Re-invention", to Clarence W. Spicer's 1904 improvements to today's modern universal joints. Timeline: 0:00 Start 0:10 Introduction 1:48 Hieronymus Cardino and his 1557s invention of the swiveling Gimbal called the "Cardan Joint" 2:46 Research on Robert E. Hooke by Professor Alan Mills of the University of Leicester, in Leicester, UK. and the Royal Society of England. 6:17 Robert E. Hooke, the sundial clock, and his discovery of the properties of a "universal joint" 10:53 Robert E. Hooke 1675 discoveries and the "Hooke's Joint" is sometimes incorrectly called a "Cardan Joint" 13:33 Christopher Polhem's 1697 "Re-invention" or Hooke's work and called it the "Polhem Knot" 15:50 Clarence W. Spicer's 1904 improvements to today's modern universal joints. 19:43 An early advertisement of Spicer self-lubricating universal joints and a propeller shaft 20:22 Clarence W. Spicer's early universal joint patents 21:40 Spicer's 1905 cross-style universal joint 22:46 Charles Dana joins Spicer 23:24 Examples of early universal joints 26:15 Example of early universal joint tool 29:30 A 1933 roller bearing universal joint patent 31:22 Universal joint part names 32:55 A 1933 roller bearing universal joint 36:31 Universal joint service intervals 38:13 Snap rings 40:26 1957 version of Spicer universal joints 43:00 Why bowed snap rings can cause universal joint failures 44:30 Is the snap ring reusable? 46:18 Improvements over the years to universal joints 48:51 1925 Hardy-Spicer joint venture 50:00 Society of Automotive Engineers (SAE) official terminology standard J901 51:20 Two other Dana Corporation inventions: The 1956 Power-Loc differential and the 1982 aluminum driveshaft. Subscribe to the weberauto Youtube channel for more great videos. Questions for teachers: 1. Why is Hieronymus Cardino's name mistakenly used for a type of universal joint (The Cardan Joint)? 2. How did Robert E. Hooke discover that driveshafts do not rotate at a constant velocity if there is any angle to the universal joint? 3. What happened to the speed of the driveshafts when Robert E. Hooks connected two universal joints together on the same shaft? 4. What did Christopher Polhem do that is so controversial with regard to universal joints? 5. What name should be used when discussing universal joints: Cardan, Hooke, or Polhem? 6. For what invention is Clarence W. Spicer famous? 7. What man joined Clarence W. Spicer and helped grow the company into a giant company that still exists today? Visit the following website for information on how to attend our school and obtain an associate's degree or bachelor's degree in Automotive Technology. http://www.weber.edu/automotive This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see http://www.weber.edu/automotive/J_Kel...