FIG 1. IMPROVED SPRING TRACTION ENGINE.
FIG. 2
TABLE SHOWING THE RELATIVE DIMENSIONS, LENGTHS, RESISTANCES, AND WEIGHTS OF PURE COPPER WIRE.
DIAMETER | AREA
|
B.W.G Inch. Milli- | Circu- Square Square
No. metres | lar inches. Milli-
| Mils. metres.
|
0000 .454 11.5313 | 206116 .161883 10.4435
000 .425 10.795 | 180625 .141862 9.152
00 .38 9.6518 | 144400 .113411 7.3165
0 .34 8.6358 | 115600 .0907922 5.8573
1 .3 7.620 | 90000 .070686 4.5602
2 .284 7.2134 | 80656 .0633472 4.0867
3 .259 6.5784 | 67081 .0526854 3.3989
4 .238 6.0451 | 56644 .0444881 2.8701
5 .22 5.5879 | 48400 .0380133 2.4523
6 .203 5.1561 | 41209 .0323655 2.088
7 .18 4.5719 | 32400 .0254469 1.6417
8 .165 4.1909 | 27225 .0213825 1.3794
9 .148 3.7591 | 21904 .0172034 1.1098
10 .134 3.4035 | 17956 .0141026 .9096
11 .12 3.0479 | 14400 .0113097 .7296
12 .109 2.7701 | 11881 .00933133 .60199
13 .095 2.4129 | 9025 .0070882 .4573
14 .083 2.1082 | 6889 .00541062 .34906
15 .072 1.8288 | 5184 .00407151 .2486
16 .065 1.6510 | 4225 .00331831 .21407
17 .058 1.4732 | 3364 .0026421 .17045
18 .049 1.2446 | 2401 .00188574 .12165
19 .042 1.0668 | 1764 .00138544 .0894
20 .035 0.8890 | 1225 .000962115 .06207
21 .032 0.8128 | 1024 .00080425 .05188
22 .028 0.7112 | 784 .000615753 .03972
23 .025 0.635 | 625 .00049087 .03167
24 .022 0.5588 | 484 .000380133 .02452
25 .02 0.508 | 400 .00031416 .02027
26 .018 0.4571 | 324 .000254469 .01642
27 .016 0.4064 | 256 .000201062 .01297
28 .014 0.3556 | 196 .000153938 .00993
29 .013 0.3302 | 169 .000132732 .00856
30 .012 0.3048 | 144 .000113097 .007296
LENGTH AND WEIGHT
B.W.G Pounds Pounds Pounds Pounds Feet Yards 1.000 feet Miles
No. per per per 1.000 per per lb. per lb. per lb. per lb.
foot. Yard ft. mile.
0000 .623924 1.871772 623.924 3294.32 1.60276 .534253 .00160276 .00303553
000 .54676 1.64028 546.76 2886.89 1.82895 .60965 .00182895 .0034639
00 .437105 1.311315 437.105 2307.92 2.28777 .76259 .00228777 .004333
0 .349928 1.049784 349.928 1847.62 2.85773 .9525766 .00285773 .0054124
1 .272435 .817305 272.435 1438.43 3.6706 1.22353 .0036706 .0069519
2 .244151 .732453 244.151 1289.11 4.0958 1.365266 .0040958 .0077573
3 .203058 .609174 203.058 1072.15 4.9247 1.641566 .0049247 .009327
4 .171463 .514395 171.465 905.333 5.8321 1.944033 .0058321 .0110457
5 .14651 .43953 146.510 773.56 6.8255 2.275166 .0068255 .012927
6 .124742 .374226 124.742 658.638 8.0165 2.672166 .0080165 .015183
7 .098076 .294228 98.076 517.844 10.1962 3.39873 .0101962 .019311
8 .082411 .247233 82.411 435.135 12.1345 4.04483 .0121345 .022981
9 .066305 .198915 66.305 350.089 15.0818 5.027266 .0150818 .028564
10 .054354 .163062 54.354 286.99 18.398 6.13266 .018398 .034845
11 .04359 .13077 43.590 230.152 22.9413 7.6471 .0229413 .04345
12 .035964 .107892 35.964 189.893 27.805 9.2683 .027805 .05266
13 .027319 .081957 27.319 144.245 36.6046 12.20153 .0366046 .069326
14 .020853 .062559 20.853 110.1088 47.954 15.98466 .047954 .09082
15 .015692 .047076 15.692 82.855 63.7267 21.24223 .0637261 .12069
16 .012789 .038367 12.789 67.5276 78.1902 26.0634 .0781902 .14809
17 .0101828 .0305484 10.1828 53.7665 98.202 32.734 .098203 .18589
18 .00726795 .02180388 7.26796 38.3748 137.590 45.8633 .137590 .260587
19 .00533972 .01601916 5.33972 28.1937 187.276 62.4253 .187276 .35469
20 .00370815 .01112445 3.70815 19.579 269.676 89.892 .2696676 .51075
21 .00309972 .00929910 3.09972 16.3665 322.610 107.5366 .322610 .61100
22 .00237312 .00711936 2.37312 12.5301 421.384 140.4613 .421334 .798078
23 .0018910 .0056757 1.8919 9.9892 528.570 176.190 .528570 .100108
24 .0014650 .0043950 1.4650 7.7357 682.55 227.5166 .68255 .129271
25 .00121082 .00363246 1.21082 6.39315 825.880 275.2943 .825883 .156417
26 .00098077 .00294231 .98077 5.17844 1019.61 339.870 1.01961 .193108
27 .00077492 .00232476 .77492 4.0916 1290.44 430.1466 1.29044 .24440
28 .0005933 .0017799 .5933 3.13264 1685.48 561.8266 1.68548 .31922
29 .000511571 .001534713 .511571 2.7011 1954.76 651.5866 1.95476 .370220
30 .0004359 .0013077 .4359 2.30152 2294.13 764.710 2.29413 .434496
LENGTH AND RESISTANCE