COAL - Clpdigital.org
COAL - Clpdigital.org
COAL - Clpdigital.org
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THE <strong>COAL</strong> TRADE BULLETIN. 49<br />
USEFUL KEY TO HAULAGE REQUIREMENTS.<br />
In determining requirements in haulage engines<br />
the appended table will be found of great value.<br />
Mr. Charles Kuderer, 346 Hemlock street, Alle<br />
gheny, Pa., the mechanical engineer, who com<br />
piled and copyrighted the table, has demonstrated<br />
its convenience in many cases. A moderately<br />
ftl<br />
o £<br />
r-<br />
I<br />
0 r<br />
>- Q.<br />
0<br />
o<br />
ftof<br />
Grade<br />
Rise<br />
Ft.<br />
per<br />
100<br />
Ft.<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
17<br />
18<br />
19<br />
20<br />
2L<br />
22<br />
23<br />
24<br />
25<br />
26<br />
27<br />
28<br />
29<br />
30<br />
31<br />
32<br />
33<br />
34<br />
35<br />
36<br />
37<br />
Angle<br />
A<br />
0°35'<br />
1° 9'<br />
1°44'<br />
2°18'<br />
2-52'<br />
3°27'<br />
4° 1'<br />
4°35'<br />
5° 9'<br />
5°43'<br />
6°17'<br />
6°51'<br />
7°25'<br />
7°59'<br />
8°32'<br />
9° 6'<br />
9°39'<br />
10°13'<br />
10°46'<br />
11°19'<br />
•11 "52'<br />
12°25'<br />
12°58'<br />
13°30'<br />
14° 3'<br />
14°35'<br />
15° 7'<br />
15°39'<br />
16°11'<br />
16°42'<br />
17-14'<br />
17°45'<br />
18°16'<br />
18°47'<br />
19°18'<br />
19°48'<br />
20°19'<br />
Sine<br />
.0101<br />
.0200<br />
.0302<br />
.0401<br />
.0500<br />
.0601<br />
0700<br />
0799<br />
0897<br />
.0996<br />
.1094<br />
.1192<br />
.1290<br />
.1388<br />
.1483<br />
.1581<br />
.1676<br />
.1773<br />
.1868<br />
.1962<br />
.2056<br />
.2150<br />
.2243<br />
.2334<br />
.2427<br />
.2517<br />
.2607<br />
.2697<br />
.2787<br />
.2873<br />
.2962<br />
.3048<br />
.3134<br />
.3219<br />
.3305<br />
.3387<br />
.3472<br />
FORCES<br />
Cosine<br />
.9999<br />
.9997<br />
.9995<br />
.9991<br />
.9987<br />
.9981<br />
.9975<br />
9968<br />
.9959<br />
.9950<br />
.9939<br />
.9928<br />
.9916<br />
.9903<br />
.9889<br />
9874<br />
.9858<br />
.9841<br />
.9823<br />
.9805<br />
.9786<br />
9766<br />
.9745<br />
9723<br />
.9700<br />
.9677<br />
9653<br />
.9629<br />
.9603<br />
.9578<br />
.9551<br />
.9523<br />
.9496<br />
9467<br />
.9438<br />
.9408<br />
.9377<br />
Perpendicular<br />
Pressure<br />
on Plane<br />
per Ton<br />
of 2000<br />
lbs.<br />
1999.8<br />
1999.4<br />
1999 0<br />
1998.2<br />
1997.4<br />
1996.2<br />
1995.0<br />
1993.6<br />
19(11.8<br />
1990 0<br />
1987.8<br />
1985.6<br />
1983.2<br />
1980.6<br />
1977.8<br />
1M74.8<br />
1971.6<br />
1968.2<br />
1964.6<br />
1961.0<br />
1957.2<br />
1953 2<br />
1949.0<br />
1944 6<br />
1940 0<br />
1935 4<br />
1930.6<br />
1925.8<br />
1920 6<br />
1915.6<br />
1910.2<br />
1904.6<br />
1899.2<br />
1893 4<br />
1887.6<br />
1881.6<br />
1875.4<br />
Stress<br />
in<br />
Rope<br />
per Ton<br />
•2000 lbs.<br />
Friction<br />
1/10<br />
70<br />
90<br />
•no<br />
130<br />
150<br />
170<br />
189<br />
206<br />
228<br />
248<br />
267<br />
287<br />
307<br />
326<br />
345<br />
365<br />
384<br />
403<br />
422<br />
441<br />
461<br />
473<br />
497<br />
614<br />
533<br />
551<br />
669<br />
587<br />
605<br />
622<br />
639<br />
656<br />
673<br />
690<br />
708<br />
724<br />
741<br />
ON<br />
Stress<br />
in<br />
Rope<br />
per Ton<br />
2000 lbs.<br />
Friction<br />
1/32<br />
82<br />
102<br />
122<br />
142<br />
162<br />
182<br />
202<br />
221<br />
241<br />
261<br />
280<br />
300<br />
319<br />
338<br />
357<br />
377<br />
396<br />
415<br />
434<br />
453<br />
472<br />
491<br />
509<br />
527<br />
540<br />
563<br />
580<br />
599<br />
617<br />
630<br />
650<br />
660<br />
686<br />
703<br />
721<br />
737<br />
754<br />
NOTE.—Stresses and Pressures are in pounds.<br />
curved road is such that would not require any<br />
more than ordinary track or bell sheaves; for<br />
sharper curves requiring 24" grooved sheaves the<br />
values given in the column headed 1-25 are re<br />
liable in all cases of haulage roads likely to be<br />
met with in coal mines.<br />
INCLINED PLANES<br />
Stress<br />
in<br />
Rope<br />
per Ton<br />
2000 lbs.<br />
Friction<br />
1/25<br />
100<br />
120<br />
140<br />
160<br />
179<br />
199<br />
219<br />
238<br />
258<br />
278<br />
297<br />
317<br />
337<br />
356<br />
375<br />
395<br />
414<br />
433<br />
452<br />
471<br />
490<br />
509<br />
525<br />
543<br />
562<br />
580<br />
598<br />
616<br />
634<br />
651<br />
669<br />
686<br />
703<br />
720<br />
738<br />
754<br />
771<br />
!
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