INDEX 



Alignment, effect of bad pulley, 67 

 Arc of contact, effect of, 22 



of contact, finding, 69 



of contact, tables, 96 

 Arrangement of pulleys, 74 



Earth's theory of belting, 37 

 Belt, best method of tightening, 19 



cement, 57 



creep, 32 



crossed, length of, 72 



direction of motion of, 66 



double, minimum diameter of 

 pulley for, 16 



dressing, 54, 64, 65 



dressing, too liberal application 

 of, 68 



drive, most satisfactory, i 



driving force of a, 41 



effect of centrifugal force on, 



35 



failures, causes of, 67 

 fixing, proper time for, 54 



glue. 57 



grea^3, 65 



horsepower. See Horsepower. 



initial tension of. See Initial 



tension, 

 intervals between retightenings 



of, 8 



joints, 56 



lacing. See Lacing, 

 length of, 71 

 maintenance, 45 

 records, 50 

 repairs, cost of, 18 

 shifter, 19, 86 



Belt, shortening required for a given 



tension, 18, 95 

 size of for a given horsepower, 3, 



Qi 



stretch, 17 

 stretch, chart, 95 

 total cost of, i 

 triple, minimum diameter of 



pulley for, 16 

 velocity. See Velocity. 

 Belts, causes of destruction of, 67 

 cleaning and greasing, 19, 67 

 cost of, 1 8 

 endless, 56 

 evils of tight, 3 

 factors influencing life of, 14 

 idle, care of, 72 

 life of, 1 8 



most economical speed of, 16 

 oak-tanned and fulled, pull 



transmitted by, 16 

 pull of, table, 91 

 quarter twist, 76 

 quarter twist, laying out, 78 

 rate of fall of tension, 1 7 

 safe loads on, 15, 16 

 shifting, it 



Taylor's investigations of, 10. 

 See also Taylor's investiga- 

 tion. 



tension of. See Tension. 

 Belt-bench, 45 

 Belt-fixer's order, 52 

 Belting, coefficient of friction of. See 



Coefficient of friction, 

 length of laps, 63 

 old, utilization of, 66 



Index. 



Ill 



