714 PROFESSOR FLEEMING JENKIN’S APPLICATION OF GRAPHIC METHODS 
The positions of the crank in column 1 are numbered thus :—Positions 0 and 
24 are the same, and correspond toa=0. Position 12 corresponds to a=180°. 
The movement in fig. 56 is contrary to that of the hands of a watch, and the 
interval between two successive positions is 15°. Looked at from the other 
side, as in earlier figures of the engine, the movement would be in the direction 
of the hands of a watch. 
TABLE I. 
Connecting-rod, 41”. Crank, 8”. Mass of connecting-rod, 34 lbs. Mass of 
piston and piston-rod, 46 lbs. Speed, one revolution per second. 
I, = 21". I = 9576 (inches and lbs.) 











Piston, mass = M. Connecting Rod, mass = M’. 
Gx : dé 6 F, F, F; aye 
Position| “gz M dx dé Wie oes | aie Bal 
of a fe g di || radians and ee and xm ce ( a) Mis ale at 
Cramkanimeeeondel Ibs. seconds. seconds, gat dt g dt Ibs. and 
Ibs. lbs. lbs. inches. 
0 | —3145 | —4488 | 1226| 0 —33-21 27891 10 0 
1 | 29:94] —42-77 | 1-186) —1-925 | —a1-61| 260 | — 356 | — 47-7 
2 | —29550| —3646 | 1-067 | —3'759 | —26-93 210 | — 695 | — 932 
3 | —1867|.—2666 | 0876 | —5:385)—1971 | 142 | — oops ies 
4 | —10°60 | —1513 | 0622| —6-702| —1069| 0-71 | —1238 | —1664 
5. |) — 2205.— 327! 0893) = 7557!) — 242) 9 Oo | S150 eee 
6 524) 748] 0 —7354 | . 5538 | 0> ;|. 145 ome 
7 | 11-86| 1636 | 0323) —7557.] 1252) 049 |) — 13-07 eae 
S| 15°72') 29-46 | —0-622 | 6702 | 1660| o-7t | 1238) ) lege 
9 | 1856] 2652 | —0876| —5385| 1960) 142] — 9-95 | —1335 
10°] 2014} 2e76 | —1067 | —3759 | | 2197 | * 210 Pe 2teae ge 
11 | 2091] 2987 —1186| —1:995| 2908| 260] — 356| — 47% 
D2! abo} | “30-27 || 1926) 0 ey ee kt 0 
13 | 90:91 | 2987] —1186| -1925| 99:08) 260) 3861 digg 
14. | 2014) 28-76 1-067 | 3759 | 9157 |. 240 | (6-05 ee 
15 | 1856} 2652 —0-876| 5385) 1960|° 142| 995] 1335 
16 | 1572| 2246 | —0622| 6702} 1660) O71) 12:38 dean 
17 | 1186| 1636]; —0323| 7557]  1252| 019 | 13-97 | eWeme 
18 524 | 748] 0 7854| 553] 0 1451 | 1946 
19 | — 2:29| — 397 | 0323, yoby |'— 249| 019] 13:07 | ieee 
20. | ~10-60 | —1513 | 0622) 6-'702,| —10-69' | Or71-);  12:38°| eas 
21 | —1867 | —26°66 || 0876 | 5385 | —1971| 142| 995] 1335 
22. .| —25:50.| —3646 | 1067}  3°759.| —2693 || 2:10] . 695 | igs 
23° | 99-04 | 4047 | 1ilg6 1-925 | —31-61 260| 356) 47-7 
24 | —3145 | —44:88 | 1226] 0 232k | ey ores 10 0 

