Ramsden, Jesse: lathe, 38. Randolph & Clowes: 236. Reed, F. E.: 224. Reed & Prentice Co.: 222. Remington Arms Co.: 161. Remington, E., & Sons: 175. Rennie, George: 54; planer, 50, 51. Rennie, Sir John: 54. Rennie, John: millwright, 54. Rhode Island Tool Co.: 125. Richards, Charles B.: 173. Richards, John: on Bodmer, 79. Robbins & Lawrence: Chapter XV; interchangeable system, 138; turret lathe, 143, 197; miller, 165, 191; government contracts, 190; Enfield rifle and gun machinery, 191-192; cause of failure, 192; successive owners of plant, 192-194, 200. Robbins, Kendall & Lawrence: 189-190. Roberts, Richard: 7, 9, 59-60, 62, 107; with Maudslay, 46, 60; planer, 50, 51, 60; locomotives, 61-62; Sharp, Roberts & Co.: 61, 62. Robinson, Anthony: screw thread, 39. Rockford, Ill.: tool builders in, 274-275. Rockford Drilling Machine Co.: 274. Rockford Iron Works: 274. Rockford Lathe & Tool Co.: 274. Rockford Machine Tool Co.: 274. Rockford Milling Machine Co.: 274. Roemer: epicyclic curve, 63. Rogers, William A.: Rogers-Bond comparator, 180-182. Root, Elisha K.: 168-169, 170; influence on die forging, 137; profiling machine, 143; drop hammer, 143, 169; Colt Armory, 169; machinery invented by, 169; horizontal turret principle, 197. Roper Repeating Arms Co.: 175. St. Joseph Iron Co.: 253. Savage Fire Arms Co.: 161. Saxton: gear teeth, 66-67. Schneider, M., and Nasmyth’s steam hammer: 95-96. Scituate, R. I.: Hope Furnace, 117. Scovill Manufacturing Co.: 232. Screw machines, multi-spindle automatic: 265. Screw-thread practice: Maudslay and Clement, 10, 19, 42, 58-59, 88; Whitworth standardizes, 10, 101; early methods of screw cutting, 38-40; Pratt & Whitney, 180-182; history of Sellers’ or U. S. Standard, 249. Sellers, Dr. Coleman: 251-252; design of railway tools, 251; screw thread, U. S. Standard, 249. Sellers, William: 247-251, 255; inventions, 247-248; planer, 248; system of screw threads, 248-249; bridge building machinery, 250; great lathe, Washington Navy Yard, 250. Sellers, William, & Co.: 251, 252. Sentinel Gas Appliance Co.: 160. Shapers: developed in England, 4; Brunel’s, 27; Nasmyth’s “Steel Arm,” 92. Sharp, Roberts & Co.: 61, 62. Sharpe, Lucian: 202; American wire gauge, 205. Sharps, Christian: breech loading rifle, 170, 192. Sharps Rifle Works: 192, 194, 195. Shaw, A. J.: 214. Shepard, Lathe & Co.: 222. Shipley, Murray: 270. Slater, Samuel: 114, 119, 121; Arkwright cotton machinery, 120, 121; textile industry, 122; Amoskeag Co., 216-217. Slide-rest: in 18th century, 4; inventors of, 6; early forms of, 6, 36; Bramah and Maudslay, 17; Maudslay, 35, 36, 38, 40, 43, 49. Sloan, Thomas J.: screw machine, 126. Slocomb, J. T.: 214. Slotter: 61.