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Peaucellier–Lipkin linkage

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Peaucellier–Lipkin linkages (PLLs) may have several inversions. A typical example is shown in the opposite figure, in which a rocker-slider four-bar serves as the input driver. To be precise, the slider acts as the input, which in turn drives the right grounded link of the PLL, thus driving the
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moving in a straight-line up and down a cylinder. This piston needed to keep a good seal with the cylinder in order to retain the driving medium, and not lose energy efficiency due to leaks. The piston does this by remaining perpendicular to the axis of the cylinder, retaining its straight-line
721: 184:. This linkage predates the Peaucellier–Lipkin linkage by 11 years and consists of a series of hinged rectangular plates, two of which remain parallel but can be moved normally to each other. Sarrus' linkage is of a three-dimensional class sometimes known as a 197: 1008: 1479: 570: 603: 1698:, he “nursed it as if it had been his own child, and when a motion was made to relieve him of it, replied ‘No! I have not had nearly enough of it—it is the most beautiful thing I have ever seen in my life.’” 1109: 1285: 909: 608: 1568: 1187: 1354: 904: 2044: 165:
motion. Converting the straight-line motion of the piston into circular motion was of critical importance. Most, if not all, applications of these steam engines, were rotary.
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Until this invention, no planar method existed of converting exact straight-line motion to circular motion, without reference guideways. In 1864, all power came from
1710:. The artwork measures 22 by 15 by 16 metres (72 ft × 49 ft × 52 ft), weighs 6,600 kilograms (14,600 lb), and can be operated from a 1670: 1363: 2037: 716:{\displaystyle {\begin{aligned}&2\times \angle OBA+2\times \angle DBA=360^{\circ }\\&\angle OBA+\angle DBA=180^{\circ }\end{aligned}}} 488: 2030: 1929: 1898: 1855: 1886: 1999: 2594: 2155: 1954: 1835: 79: 57: 1790: 1019: 2017: 2584: 1866: 1200: 2248: 2175: 2071: 1711: 1514: 1115: 138: 1294: 1003:{\displaystyle {\begin{aligned}&x=\ell _{BP}=\ell _{PD}\\&y=\ell _{OB}\\&h=\ell _{AP}\end{aligned}}} 2325: 2165: 1845: 50: 44: 1980: 1994: 1728: 122: 288:
is constrained to move along a circle (for example, by attaching it to a bar with a length halfway between
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A monumental-scale sculpture implementing the linkage in illuminated struts is on permanent exhibition in
1687: 61: 2310: 2305: 2285: 2210: 2170: 2160: 2113: 2108: 142: 1970: 1924:(reprint of 1929 edition by Houghton Mifflin ed.). New York: Dover Publications. pp. 46–51. 2315: 2295: 2290: 2280: 2258: 2200: 2091: 2086: 2053: 2005: 1985: 1723: 134: 126: 2549: 2373: 2300: 2195: 2145: 1862:— proof and discussion of Peaucellier–Lipkin linkage, mathematical and real-world mechanical models 1191: 1922:
Advanced Euclidean Geometry: An elementary treatise on the geometry of the triangle and the circle
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will necessarily have to move along a straight line (shown in blue). In contrast, if point
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There is an earlier straight-line mechanism, whose history is not well known, called the
349:. This may be easily seen by observing that the linkage is mirror-symmetric about line 2133: 1870: 181: 146: 1474:{\displaystyle {\ell _{OA}}^{2}-{\ell _{AD}}^{2}=y^{2}+2xy=\ell _{OB}\cdot \ell _{OD}} 2578: 2544: 2534: 2391: 2180: 2098: 2057: 1971:
How to Draw a Straight Line, online video clips of linkages with interactive applets.
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The mathematics of the Peaucellier–Lipkin linkage is directly related to the
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In the geometric diagram of the apparatus, six bars of fixed length can be seen:
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Slider-rocker four-bar acts as the driver of the Peaucellier–Lipkin linkage
188:, unlike the Peaucellier–Lipkin linkage which is a planar mechanism. 27:
Mechanical linkage capable of transforming rotary motion into linear motion
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How round is your circle? : where engineering and mathematics meet
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How to Draw a Straight Line, historical discussion of linkage design
1791:"Just because you are a character, doesn't mean you have character" 1669: 195: 91: 1850:. Princeton: Princeton University Press. pp. 33–38, 60–63. 2026: 316:
would necessarily have to move along a circle (passing through
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Modified Peaucellier robotic arm linkage (Vex Team 1508 video)
29: 1104:{\displaystyle \ell _{OB}\cdot \ell _{OD}=y(y+2x)=y^{2}+2xy} 308:
were constrained to move along a line (not passing through
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The Penguin Dictionary of Curious and Interesting Geometry
1748:"Mathematical tutorial of the Peaucellier–Lipkin linkage" 1694:, Vol. 3, Paper 2) writes that when he showed a model to 1633:
traces a circle passing through the center of inversion
1912:, pp 181–5, New York: McGraw–Hill, weblink from 1280:{\displaystyle {\ell _{OA}}^{2}=y^{2}+2xy+x^{2}+h^{2}} 482:
Finally, because they form a complete circle, we have
1517: 1366: 1297: 1203: 1118: 1022: 907: 606: 491: 2527: 2474: 2382: 2334: 2266: 2257: 2219: 2064: 1562: 1473: 1348: 1279: 1181: 1103: 1002: 715: 564: 1641:is constrained to trace a straight line. But if 1563:{\displaystyle \ell _{OB}\cdot \ell _{OD}=k^{2}} 1182:{\displaystyle {\ell _{OA}}^{2}=(y+x)^{2}+h^{2}} 121:), invented in 1864, was the first true planar 1986:Java animated Peaucellier–Lipkin linkage 1770:"How to draw a straight line by Daina Taimina" 1653:must trace an arc of a circle passing through 141:(1832–1913), a French army officer, and 2038: 1991:Jewish Encyclopedia article on Lippman Lipkin 1625:is the inverse of the figure traced by point 8: 1496:are both fixed lengths, then the product of 1349:{\displaystyle {\ell _{AD}}^{2}=x^{2}+h^{2}} 1645:traces a straight line not passing through 2263: 2045: 2031: 2023: 296:; path shown in red) which passes through 200:Geometric diagram of a Peaucellier linkage 1908:Hartenberg, R.S. & J. Denavit (1964) 1554: 1538: 1522: 1516: 1462: 1446: 1421: 1408: 1398: 1393: 1383: 1373: 1368: 1365: 1340: 1327: 1314: 1304: 1299: 1296: 1271: 1258: 1233: 1220: 1210: 1205: 1202: 1173: 1160: 1135: 1125: 1120: 1117: 1083: 1043: 1027: 1021: 987: 963: 939: 923: 908: 906: 703: 658: 607: 605: 556: 490: 96:Animation for Peaucellier–Lipkin linkage: 80:Learn how and when to remove this message 43:This article includes a list of general 1739: 2008:using the Molecular Workbench software 1844:Bryant, John; Sangwin, Chris (2008). 333:First, it must be proven that points 7: 137:, and vice versa. It is named after 1981:Interactive Java Applet with proof. 1945:. New York: Penguin Books. p.  1621:, since the figure traced by point 1714:accessible to the general public. 684: 669: 639: 618: 537: 522: 507: 492: 465:are congruent. Therefore, angles 453:is congruent to itself, and sides 49:it lacks sufficient corresponding 25: 833:is congruent to itself, and side 119:Peaucellier–Lipkin inversor 111:Peaucellier–Lipkin linkage 34: 1910:Kinematic synthesis of linkages 2002:features an interactive applet 1905:(and references cited therein) 1157: 1144: 1073: 1058: 1: 750:be the intersection of lines 575:but, due to the congruences, 380:is congruent to itself, side 324:Mathematical proof of concept 115:Peaucellier–Lipkin cell 1772:. Kmoddl.library.cornell.edu 1750:. Kmoddl.library.cornell.edu 1617:Thus, by the properties of 1593:with respect to the circle 435:are congruent, since sides 374:are congruent because side 149:and son of the famed Rabbi 139:Charles-Nicolas Peaucellier 2611: 1288:(same expression expanded) 284:is fixed. Then, if point 246:is equal to the length of 808:is congruent to triangle 360:More formally, triangles 2595:Straight line mechanisms 357:must fall on that line. 276:are all equal forming a 129:capable of transforming 2014:called Hart's Inversor. 2000:Peaucellier Apparatus 1729:Straight line mechanism 123:straight line mechanism 64:more precise citations. 2186:Single-acting cylinder 2119:Double-acting cylinder 1823:Excursions in Geometry 1708:Eindhoven, Netherlands 1675: 1564: 1475: 1350: 1281: 1183: 1105: 1004: 774:of both line segments 717: 566: 201: 176:Earlier Sarrus linkage 106: 2585:Linkages (mechanical) 2054:Engine configurations 1673: 1565: 1476: 1357:(Pythagorean theorem) 1351: 1282: 1184: 1106: 1005: 839:is congruent to side 821:is congruent to side 786:. Therefore, length 718: 567: 404:. Therefore, angles 398:is congruent to side 386:is congruent to side 252:, and the lengths of 199: 145:(1846–1876), a 143:Yom Tov Lipman Lipkin 95: 2156:Oscillating cylinder 1724:Linkage (mechanical) 1585:are collinear, then 1515: 1364: 1295: 1201: 1116: 1020: 905: 845:. Therefore, angle 604: 489: 447:are congruent, side 135:straight-line motion 2249:Two-and four-stroke 2151:Intake over exhaust 1920:Johnson RA (1960). 1702:Cultural references 1192:Pythagorean theorem 125:– the first planar 1914:Cornell University 1877:Geometry Revisited 1826:, Dover, pp.  1676: 1619:inversive geometry 1613:Inversive geometry 1589:is the inverse of 1560: 1471: 1346: 1277: 1179: 1101: 1000: 998: 713: 711: 562: 202: 107: 2572: 2571: 2568: 2567: 2268:Inline / straight 2166:Overhead camshaft 2012:A related linkage 1931:978-0-486-46237-0 1900:978-0-88385-619-2 1857:978-0-691-13118-4 1573:and since points 1358: 1289: 1195: 726:therefore points 90: 89: 82: 16:(Redirected from 2602: 2264: 2259:Cylinder layouts 2047: 2040: 2033: 2024: 1960: 1939:Wells D (1991). 1935: 1904: 1880: 1861: 1840: 1805: 1804: 1802: 1801: 1787: 1781: 1780: 1778: 1777: 1768:Taimina, Daina. 1765: 1759: 1758: 1756: 1755: 1744: 1683:Historical notes 1666:A typical driver 1656: 1652: 1648: 1644: 1640: 1636: 1632: 1628: 1624: 1608: 1604: 1600: 1592: 1588: 1584: 1580: 1576: 1569: 1567: 1566: 1561: 1559: 1558: 1546: 1545: 1530: 1529: 1507: 1506: 1501: 1500: 1495: 1494: 1489: 1488: 1480: 1478: 1477: 1472: 1470: 1469: 1454: 1453: 1426: 1425: 1413: 1412: 1407: 1406: 1405: 1388: 1387: 1382: 1381: 1380: 1356: 1355: 1353: 1352: 1347: 1345: 1344: 1332: 1331: 1319: 1318: 1313: 1312: 1311: 1287: 1286: 1284: 1283: 1278: 1276: 1275: 1263: 1262: 1238: 1237: 1225: 1224: 1219: 1218: 1217: 1189: 1188: 1186: 1185: 1180: 1178: 1177: 1165: 1164: 1140: 1139: 1134: 1133: 1132: 1110: 1108: 1107: 1102: 1088: 1087: 1051: 1050: 1035: 1034: 1009: 1007: 1006: 1001: 999: 995: 994: 975: 971: 970: 951: 947: 946: 931: 930: 911: 894: 886: 878: 870: 858: 851: 844: 843: 838: 837: 832: 831: 826: 825: 820: 819: 814: 807: 797: 796: 791: 790: 785: 784: 779: 778: 769: 761: 757: 753: 749: 737: 733: 729: 722: 720: 719: 714: 712: 708: 707: 667: 663: 662: 610: 596: 585: 571: 569: 568: 563: 561: 560: 478: 471: 464: 463: 458: 457: 452: 451: 446: 445: 440: 439: 434: 427: 421:Next, triangles 417: 410: 403: 402: 397: 396: 391: 390: 385: 384: 379: 378: 373: 366: 356: 352: 344: 340: 336: 319: 315: 311: 307: 303: 299: 295: 291: 287: 283: 275: 274: 269: 268: 263: 262: 257: 256: 251: 250: 245: 244: 240:. The length of 239: 238: 233: 232: 227: 226: 221: 220: 215: 214: 209: 208: 105:Yellow Links = c 85: 78: 74: 71: 65: 60:this article by 51:inline citations 38: 37: 30: 21: 2610: 2609: 2605: 2604: 2603: 2601: 2600: 2599: 2575: 2574: 2573: 2564: 2523: 2470: 2378: 2330: 2253: 2215: 2060: 2051: 1995:Israel Salanter 1993:and his father 1967: 1957: 1938: 1932: 1919: 1901: 1865: 1858: 1843: 1838: 1816: 1813: 1808: 1799: 1797: 1789: 1788: 1784: 1775: 1773: 1767: 1766: 1762: 1753: 1751: 1746: 1745: 1741: 1737: 1720: 1704: 1692:Collected Works 1685: 1668: 1654: 1650: 1646: 1642: 1638: 1634: 1630: 1626: 1622: 1615: 1606: 1602: 1594: 1590: 1586: 1582: 1578: 1574: 1550: 1534: 1518: 1513: 1512: 1508:is a constant: 1504: 1503: 1498: 1497: 1492: 1491: 1486: 1485: 1458: 1442: 1417: 1394: 1392: 1369: 1367: 1362: 1361: 1336: 1323: 1300: 1298: 1293: 1292: 1267: 1254: 1229: 1206: 1204: 1199: 1198: 1169: 1156: 1121: 1119: 1114: 1113: 1079: 1039: 1023: 1018: 1017: 997: 996: 983: 973: 972: 959: 949: 948: 935: 919: 903: 902: 888: 880: 872: 860: 853: 846: 841: 840: 835: 834: 829: 828: 823: 822: 817: 816: 815:, because side 809: 802: 794: 793: 788: 787: 782: 781: 776: 775: 767: 759: 758:. Then, since 755: 751: 747: 744: 738:are collinear. 735: 731: 727: 710: 709: 699: 665: 664: 654: 602: 601: 587: 576: 552: 487: 486: 473: 466: 461: 460: 455: 454: 449: 448: 443: 442: 437: 436: 429: 422: 412: 405: 400: 399: 394: 393: 388: 387: 382: 381: 376: 375: 368: 361: 354: 350: 342: 338: 334: 331: 326: 317: 313: 309: 305: 301: 297: 293: 289: 285: 281: 280:. Also, point 272: 271: 266: 265: 260: 259: 254: 253: 248: 247: 242: 241: 236: 235: 230: 229: 224: 223: 218: 217: 212: 211: 206: 205: 194: 178: 151:Israel Salanter 104: 103:Green Links = b 102: 100: 98: 97: 86: 75: 69: 66: 56:Please help to 55: 39: 35: 28: 23: 22: 15: 12: 11: 5: 2608: 2606: 2598: 2597: 2592: 2587: 2577: 2576: 2570: 2569: 2566: 2565: 2563: 2562: 2557: 2552: 2547: 2542: 2537: 2531: 2529: 2525: 2524: 2522: 2521: 2516: 2511: 2506: 2501: 2496: 2491: 2486: 2480: 2478: 2472: 2471: 2469: 2468: 2463: 2458: 2453: 2448: 2443: 2438: 2433: 2428: 2427: 2426: 2416: 2415: 2414: 2404: 2399: 2394: 2388: 2386: 2380: 2379: 2377: 2376: 2371: 2366: 2361: 2356: 2351: 2346: 2340: 2338: 2332: 2331: 2329: 2328: 2323: 2318: 2313: 2308: 2303: 2298: 2293: 2288: 2283: 2278: 2272: 2270: 2261: 2255: 2254: 2252: 2251: 2246: 2241: 2236: 2231: 2225: 2223: 2217: 2216: 2214: 2213: 2208: 2203: 2198: 2193: 2188: 2183: 2178: 2173: 2171:Overhead valve 2168: 2163: 2161:Opposed-piston 2158: 2153: 2148: 2143: 2138: 2137: 2136: 2126: 2121: 2116: 2111: 2106: 2101: 2096: 2095: 2094: 2089: 2079: 2074: 2068: 2066: 2062: 2061: 2058:piston engines 2052: 2050: 2049: 2042: 2035: 2027: 2021: 2020: 2015: 2009: 2003: 1997: 1988: 1983: 1978: 1973: 1966: 1965:External links 1963: 1962: 1961: 1955: 1936: 1930: 1917: 1906: 1899: 1863: 1856: 1841: 1836: 1812: 1809: 1807: 1806: 1782: 1760: 1738: 1736: 1733: 1732: 1731: 1726: 1719: 1716: 1703: 1700: 1684: 1681: 1667: 1664: 1614: 1611: 1571: 1570: 1557: 1553: 1549: 1544: 1541: 1537: 1533: 1528: 1525: 1521: 1482: 1481: 1468: 1465: 1461: 1457: 1452: 1449: 1445: 1441: 1438: 1435: 1432: 1429: 1424: 1420: 1416: 1411: 1404: 1401: 1397: 1391: 1386: 1379: 1376: 1372: 1359: 1343: 1339: 1335: 1330: 1326: 1322: 1317: 1310: 1307: 1303: 1290: 1274: 1270: 1266: 1261: 1257: 1253: 1250: 1247: 1244: 1241: 1236: 1232: 1228: 1223: 1216: 1213: 1209: 1196: 1176: 1172: 1168: 1163: 1159: 1155: 1152: 1149: 1146: 1143: 1138: 1131: 1128: 1124: 1111: 1100: 1097: 1094: 1091: 1086: 1082: 1078: 1075: 1072: 1069: 1066: 1063: 1060: 1057: 1054: 1049: 1046: 1042: 1038: 1033: 1030: 1026: 1011: 1010: 993: 990: 986: 982: 979: 976: 974: 969: 966: 962: 958: 955: 952: 950: 945: 942: 938: 934: 929: 926: 922: 918: 915: 912: 910: 743: 742:Inverse points 740: 724: 723: 706: 702: 698: 695: 692: 689: 686: 683: 680: 677: 674: 671: 668: 666: 661: 657: 653: 650: 647: 644: 641: 638: 635: 632: 629: 626: 623: 620: 617: 614: 611: 609: 573: 572: 559: 555: 551: 548: 545: 542: 539: 536: 533: 530: 527: 524: 521: 518: 515: 512: 509: 506: 503: 500: 497: 494: 330: 327: 325: 322: 312:), then point 193: 190: 182:Sarrus linkage 177: 174: 160:, which had a 147:Lithuanian Jew 101:Cyan Links = a 88: 87: 42: 40: 33: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 2607: 2596: 2593: 2591: 2590:Linear motion 2588: 2586: 2583: 2582: 2580: 2561: 2558: 2556: 2553: 2551: 2548: 2546: 2543: 2541: 2538: 2536: 2533: 2532: 2530: 2526: 2520: 2517: 2515: 2512: 2510: 2507: 2505: 2502: 2500: 2497: 2495: 2492: 2490: 2487: 2485: 2482: 2481: 2479: 2477: 2473: 2467: 2464: 2462: 2459: 2457: 2454: 2452: 2449: 2447: 2444: 2442: 2439: 2437: 2434: 2432: 2429: 2425: 2422: 2421: 2420: 2417: 2413: 2410: 2409: 2408: 2405: 2403: 2400: 2398: 2395: 2393: 2390: 2389: 2387: 2385: 2381: 2375: 2372: 2370: 2367: 2365: 2362: 2360: 2357: 2355: 2352: 2350: 2347: 2345: 2342: 2341: 2339: 2337: 2333: 2327: 2324: 2322: 2319: 2317: 2314: 2312: 2309: 2307: 2304: 2302: 2299: 2297: 2294: 2292: 2289: 2287: 2284: 2282: 2279: 2277: 2274: 2273: 2271: 2269: 2265: 2262: 2260: 2256: 2250: 2247: 2245: 2242: 2240: 2237: 2235: 2232: 2230: 2227: 2226: 2224: 2222: 2221:Stroke cycles 2218: 2212: 2209: 2207: 2204: 2202: 2199: 2197: 2194: 2192: 2189: 2187: 2184: 2182: 2179: 2177: 2174: 2172: 2169: 2167: 2164: 2162: 2159: 2157: 2154: 2152: 2149: 2147: 2144: 2142: 2139: 2135: 2132: 2131: 2130: 2127: 2125: 2122: 2120: 2117: 2115: 2112: 2110: 2107: 2105: 2102: 2100: 2097: 2093: 2090: 2088: 2085: 2084: 2083: 2080: 2078: 2075: 2073: 2070: 2069: 2067: 2063: 2059: 2055: 2048: 2043: 2041: 2036: 2034: 2029: 2028: 2025: 2019: 2016: 2013: 2010: 2007: 2004: 2001: 1998: 1996: 1992: 1989: 1987: 1984: 1982: 1979: 1977: 1974: 1972: 1969: 1968: 1964: 1958: 1956:0-14-011813-6 1952: 1948: 1944: 1943: 1937: 1933: 1927: 1923: 1918: 1915: 1911: 1907: 1902: 1896: 1892: 1888: 1884: 1879: 1878: 1872: 1868: 1864: 1859: 1853: 1849: 1848: 1842: 1839: 1837:0-486-26530-7 1833: 1829: 1825: 1824: 1819: 1818:Ogilvy, C. S. 1815: 1814: 1810: 1796: 1792: 1786: 1783: 1771: 1764: 1761: 1749: 1743: 1740: 1734: 1730: 1727: 1725: 1722: 1721: 1717: 1715: 1713: 1712:control panel 1709: 1701: 1699: 1697: 1693: 1689: 1682: 1680: 1672: 1665: 1663: 1662: 1661: 1620: 1612: 1610: 1598: 1555: 1551: 1547: 1542: 1539: 1535: 1531: 1526: 1523: 1519: 1511: 1510: 1509: 1466: 1463: 1459: 1455: 1450: 1447: 1443: 1439: 1436: 1433: 1430: 1427: 1422: 1418: 1414: 1409: 1402: 1399: 1395: 1389: 1384: 1377: 1374: 1370: 1360: 1341: 1337: 1333: 1328: 1324: 1320: 1315: 1308: 1305: 1301: 1291: 1272: 1268: 1264: 1259: 1255: 1251: 1248: 1245: 1242: 1239: 1234: 1230: 1226: 1221: 1214: 1211: 1207: 1197: 1193: 1174: 1170: 1166: 1161: 1153: 1150: 1147: 1141: 1136: 1129: 1126: 1122: 1112: 1098: 1095: 1092: 1089: 1084: 1080: 1076: 1070: 1067: 1064: 1061: 1055: 1052: 1047: 1044: 1040: 1036: 1031: 1028: 1024: 1016: 1015: 1014: 991: 988: 984: 980: 977: 967: 964: 960: 956: 953: 943: 940: 936: 932: 927: 924: 920: 916: 913: 901: 900: 899: 896: 892: 884: 876: 868: 864: 859:. But since 857: 850: 813: 806: 799: 773: 765: 741: 739: 704: 700: 696: 693: 690: 687: 681: 678: 675: 672: 659: 655: 651: 648: 645: 642: 636: 633: 630: 627: 624: 621: 615: 612: 600: 599: 598: 595: 591: 584: 580: 557: 553: 549: 546: 543: 540: 534: 531: 528: 525: 519: 516: 513: 510: 504: 501: 498: 495: 485: 484: 483: 480: 477: 470: 433: 426: 419: 416: 409: 372: 365: 358: 348: 328: 323: 321: 300:, then point 279: 198: 191: 189: 187: 183: 175: 173: 172:of a circle. 171: 166: 163: 159: 158:steam engines 154: 152: 148: 144: 140: 136: 133:into perfect 132: 131:rotary motion 128: 124: 120: 116: 112: 94: 84: 81: 73: 63: 59: 53: 52: 46: 41: 32: 31: 19: 2550:Split-single 2336:Flat / boxer 2196:Swing-piston 2006:A simulation 1941: 1921: 1876: 1846: 1822: 1811:Bibliography 1798:. Retrieved 1794: 1785: 1774:. Retrieved 1763: 1752:. Retrieved 1742: 1705: 1691: 1686: 1679:entire PLL. 1677: 1658: 1616: 1601:with center 1596: 1572: 1483: 1190:(due to the 1012: 897: 890: 882: 874: 866: 862: 855: 848: 811: 804: 800: 745: 725: 593: 589: 582: 578: 574: 481: 475: 468: 431: 424: 420: 414: 407: 370: 363: 359: 332: 329:Collinearity 203: 179: 167: 155: 118: 114: 110: 108: 76: 67: 48: 2239:Five-stroke 2234:Four-stroke 2191:Split cycle 2129:Free-piston 2072:Atmospheric 1889:. pp.  1871:Greitzer SL 1867:Coxeter HSM 1795:Ivo Schoofs 1605:and radius 479:are equal. 418:are equal. 392:, and side 353:, so point 186:space crank 99:Dimensions: 70:August 2017 62:introducing 18:Peaucellier 2579:Categories 2244:Six-stroke 2229:Two-stroke 2146:Heron head 2104:Cam engine 1883:Washington 1800:2017-08-14 1776:2011-12-06 1754:2011-12-06 1735:References 746:Let point 45:references 1688:Sylvester 1536:ℓ 1532:⋅ 1520:ℓ 1460:ℓ 1456:⋅ 1444:ℓ 1396:ℓ 1390:− 1371:ℓ 1302:ℓ 1208:ℓ 1123:ℓ 1041:ℓ 1037:⋅ 1025:ℓ 985:ℓ 961:ℓ 937:ℓ 921:ℓ 801:Triangle 792:= length 705:∘ 685:∠ 670:∠ 660:∘ 640:∠ 637:× 619:∠ 616:× 558:∘ 538:∠ 523:∠ 508:∠ 493:∠ 347:collinear 170:inversion 2176:Pentroof 2124:Flathead 2114:Compound 2092:Rotative 1873:(1967). 1820:(1990), 1718:See also 852:= angle 772:midpoint 192:Geometry 2384:V / Vee 2201:Uniflow 2134:Stelzer 2109:Camless 2087:Cornish 1649:, then 1637:, then 871:, then 827:, side 770:is the 764:rhombus 597:, thus 278:rhombus 127:linkage 58:improve 2545:Radial 2535:Deltic 2181:Rotary 2099:Bourke 1953:  1928:  1897:  1893:–111. 1854:  1834:  1696:Kelvin 1660:Q.E.D. 1484:Since 1013:Then: 887:, and 877:= 180° 869:= 180° 734:, and 270:, and 162:piston 47:, but 2528:Other 2211:Wedge 2077:Axial 1828:46–48 1629:, if 898:Let: 893:= 90° 885:= 90° 873:2 × ∠ 762:is a 117:, or 2206:Watt 2141:Hemi 2082:Beam 2065:Type 2056:for 1951:ISBN 1926:ISBN 1895:ISBN 1852:ISBN 1832:ISBN 1502:and 1490:and 780:and 760:ABCD 754:and 586:and 472:and 459:and 441:and 428:and 411:and 367:and 345:are 292:and 113:(or 109:The 2519:W30 2514:W24 2509:W18 2504:W16 2499:W12 2466:V24 2461:V20 2456:V18 2451:V16 2446:V14 2441:V12 2436:V10 2424:VR6 2412:VR5 2374:F16 2369:F12 2364:F10 2326:I14 2321:I12 1947:120 1891:108 1887:MAA 1595:(O, 891:DPA 883:BPA 875:BPA 867:DPA 865:+ ∠ 863:BPA 856:DPA 849:BPA 812:DPA 805:BPA 701:180 656:360 594:DBC 592:= ∠ 590:DBA 583:OBC 581:= ∠ 579:OBA 554:360 476:OBC 469:OBA 432:OBC 425:OBA 415:CBD 408:ABD 371:BCD 364:BAD 320:). 2581:: 2494:W8 2489:W6 2484:W3 2431:V8 2419:V6 2407:V5 2402:V4 2397:V3 2392:V2 2359:F8 2354:F6 2349:F4 2344:F2 2316:I9 2311:I8 2306:I7 2301:I6 2296:I5 2291:I4 2286:I3 2281:I2 2276:I1 1949:. 1885:: 1881:. 1869:, 1830:, 1793:. 1657:. 1609:. 1581:, 1577:, 1505:OD 1499:OB 1493:AD 1487:OA 895:. 879:, 842:AD 836:AB 830:AP 824:DP 818:BP 798:. 795:PD 789:BP 783:AC 777:BD 766:, 756:BD 752:AC 730:, 462:BC 456:BA 450:OB 444:OC 438:OA 401:CD 395:AD 389:BC 383:BA 377:BD 351:OD 341:, 337:, 273:DA 267:CD 264:, 261:BC 258:, 255:AB 249:OC 243:OA 237:DA 234:, 231:CD 228:, 225:BC 222:, 219:AB 216:, 213:OC 210:, 207:OA 153:. 2560:X 2555:U 2540:H 2476:W 2046:e 2039:t 2032:v 1959:. 1934:. 1916:. 1903:. 1860:. 1803:. 1779:. 1757:. 1690:( 1655:O 1651:D 1647:O 1643:B 1639:D 1635:O 1631:B 1627:B 1623:D 1607:k 1603:O 1599:) 1597:k 1591:B 1587:D 1583:D 1579:B 1575:O 1556:2 1552:k 1548:= 1543:D 1540:O 1527:B 1524:O 1467:D 1464:O 1451:B 1448:O 1440:= 1437:y 1434:x 1431:2 1428:+ 1423:2 1419:y 1415:= 1410:2 1403:D 1400:A 1385:2 1378:A 1375:O 1342:2 1338:h 1334:+ 1329:2 1325:x 1321:= 1316:2 1309:D 1306:A 1273:2 1269:h 1265:+ 1260:2 1256:x 1252:+ 1249:y 1246:x 1243:2 1240:+ 1235:2 1231:y 1227:= 1222:2 1215:A 1212:O 1194:) 1175:2 1171:h 1167:+ 1162:2 1158:) 1154:x 1151:+ 1148:y 1145:( 1142:= 1137:2 1130:A 1127:O 1099:y 1096:x 1093:2 1090:+ 1085:2 1081:y 1077:= 1074:) 1071:x 1068:2 1065:+ 1062:y 1059:( 1056:y 1053:= 1048:D 1045:O 1032:B 1029:O 992:P 989:A 981:= 978:h 968:B 965:O 957:= 954:y 944:D 941:P 933:= 928:P 925:B 917:= 914:x 889:∠ 881:∠ 861:∠ 854:∠ 847:∠ 810:△ 803:△ 768:P 748:P 736:D 732:B 728:O 697:= 694:A 691:B 688:D 682:+ 679:A 676:B 673:O 652:= 649:A 646:B 643:D 634:2 631:+ 628:A 625:B 622:O 613:2 588:∠ 577:∠ 550:= 547:O 544:B 541:C 535:+ 532:C 529:B 526:D 520:+ 517:D 514:B 511:A 505:+ 502:A 499:B 496:O 474:∠ 467:∠ 430:△ 423:△ 413:∠ 406:∠ 369:△ 362:△ 355:B 343:D 339:B 335:O 318:O 314:D 310:O 306:B 302:D 298:O 294:B 290:O 286:B 282:O 83:) 77:( 72:) 68:( 54:. 20:)

Index

Peaucellier
references
inline citations
improve
introducing
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straight line mechanism
linkage
rotary motion
straight-line motion
Charles-Nicolas Peaucellier
Yom Tov Lipman Lipkin
Lithuanian Jew
Israel Salanter
steam engines
piston
inversion
Sarrus linkage
space crank

rhombus
collinear
rhombus
midpoint
Pythagorean theorem
inversive geometry
Q.E.D.

Sylvester

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