202 



BULLETIN 173, U. S. NATIONAL MUSEUM 



Uhry, H., and H. A. Luttgens, valve 

 gearing, 1855, 64. 



Union Manufacturing Co., assignees, 

 138. 



United American Bosch Corporation, 

 donor, 173. 



United Fire Engine Co., No. 3, donor, 

 140. 



United States Military Railroad De- 

 partment, engine, 1864, 48. 



Universal joints, 103. 



Uppercu, I. M., donor, 168. 



Vacuum vapor "power plant," 1933, 58. 



Valve gears, steam engine, 60-79: 

 Adams. 1838. 62; Allen, 1841, 62; 

 1842, 63; 1848, 63; 1855, 64; 1857, 

 65; Babcock & Wilcox, 1866, 67; 

 Bartlett, 1867, 68; Brown and Bur- 

 leigh, 1856, 69; Buckeye Engine Co., 

 69; Carhart, 1866, 67; Corliss, 1849, 

 71 ; 1851, 72 : 1859, 74 ; 1860, 77 ; 1875, 

 76; 1876, 77; 1882, 78, 79; cut-ofifs: 

 drop, 60-65, 71-74, 76-79 ; first. Watt, 

 1776, 1782, 60 ; riding, 62, 67 ; rotary, 

 66 ; separate valves, 63 ; variable, 60 ; 

 Oilman, 1850, 65; Greene- Wheelock, 

 70; link motion, 54, 55, 64; Otto and 

 Bell, 1883, 70; poppet, 61-65, 68; 

 Richards, 1866, 68 ; Rogers, 1845, 71 ; 

 Sickels, 1841, 60-62 ; 1852, 64 ; steam- 

 boat, Stevens, 1861, 66; Steenstrup, 

 boiler, 1828, 106; Stephenson, 54, 55, 

 64 ; Stevens, F. B., 1861, 66 ; Stevens, 

 F. B. and R. L., 1841, 66 ; Stone, 1865, 

 71 ; Sulzer Brothers, 71 ; Thompson, 

 1875, 69, 85; Uhry and Luttgens, 

 1885, 64; Wiegand, 1857, 65; Whee- 

 lock, 1885, 70; Woodbury, 1859. 66. 



Valves, steam-engine : Balanced, 67, 68 ; 

 cone valve, 64 ; governor, 79, 98 ; grid- 

 iron plug valves, 70 ; slide valve, 70 ; 

 throttle, 79, 98. 



Van Deren, G. W., steam engine, 59. 



Van Dusen's Garage, donor, 174. 



Vapor engines, carbon disulphide, 1879, 

 101 ; mercury, 1877, 60 ; vacuum vapor 

 power plant, 1933. 58. 



Vertical windmill, 1879, 12. 



"Viking Tower," 9. 



Vincent G. Apple Laboratories, donor, 

 174. 



Vinci, Leonardo da, 8; chimney jack, 

 175. 



Vitruvius, water mill, 14. 



Voight, H., 33. 115. 



Volcanic engine, Evans, 146, 182. 



von Guericke, 25, 26. 



Vulcan electric gearshift, 163. 



Wadsworth, H., boiler models, 139. 

 Waldo, P. G. and H. Reily, rotary 



steam engine, 1875, 57. 

 Walker, B. P., belt joint, 102. 

 Ward, J. B., 47. 

 Warden, H., licensee, 157. 



Wardlaw, F. A., model of fire engine, 

 141 ; steam engines, 59. 



Wardlaw, F. A., and F. A. Jr., donors, 

 59, 141. 



Warren, J., spring motor, 1880, 7. 



Washburn, aerosteam engine, 182. 



Washington, George, 5, 35. 



Water engine, Leuchsenring rotary, 

 1880, 21. 



Water-level alarm, Frick, 1858, 120. 



Water mill, first, 14 ; gearing, c. 1870, 20. 



Water motors, Colton, 1881, 24; Lamb, 

 1865, 24; mills, 1887, 24; domestic 

 Eyster, 1879, 21 ; Haworth, 1878, 20. 



Water wheels {see also Pelton, Turbines, 

 hydraulic, and Water motors) : Bibli- 

 ography, 188; breast wheel, 15; 

 Brooks, 1880, 21 ; current wheel, 14, 

 18; Doble, 1899, 22; efficiencies of, 

 15, 17 ; firsts, the Noria, chain of 

 buckets, water mill, 14 ; over-shot, 15 ; 

 Poncelet, 15, 18; Roman mill, 14; 

 tangential, 18 ; undershot, 15, 16. 



Watkins, J. E., donor, 86. 



Watt, James, 5. 25; boilers, 104-105; 

 condenser, 1769, 25, 96 ; engines, 31 ; 

 engine at Savannah, 1815, 42 ; engine 

 cut-off, 60; engine indicators, 89, c. 

 1796, 90; indicator diagram, 90. (See 

 also Boulton & Watt.) 



Webster Electric Co., magneto and ig- 

 niter, 174. 



Webster furnace, 117. 



Weis, A. L., donor, 53. 



Weis, F. N., model river steamboat en- 

 gine, 53. 



Westinghouse, stoker, 117 ; junior steam 

 engine, c. 1900, 54. 



Weston, T. A., chain hoist, 4. 



West Point Foundry, 39. 



Wheel-and-axle, mechanical element, 2. 



Wheeler, L. H., windmill, 10. 



Wheeler, S., universal joint, 1869, 103. 



Wheeler, W. A., windmill, 1879. 12. 



Wheelock, J., valve, 1885, 70; Greene- 

 Wheelock valve, 70. 



"Whirlwind," Wright engine, 165. 



White, W. M., hydraucone, 18. 



Whiting, J. M., aerosteam engine, 1879, 

 182. 



Wiegand, S. L., valve gear, 1857, 65; 

 boiler furnace, 110. 



Wilcox, S., Jr., boiler, 108, 114; hot-air 

 engine, 176. 



Wilcox, S., Jr., and G. H. Babcock, boil- 

 ers, 1867 and 1876, 115 ; steam gener- 

 ator, 1876, 116; valve gear, 1866, 67. 

 (See also Babcock & Wilcox Co.) 



Wilkinson, D., 33. 



Willet, A. W., 31. 



Williams, Hitzeroth, and Macdouald, 

 rope drive, 103. 



Willis, W. N., steam engine, 59. 



Willys-Knight, engine, 1927-28, 164. 



Willys-Overland, Inc., donors, 164. 



Wind-electric generators, 11 ; Farmer, 

 1880, 13. 



