112 



INDEX 



Belting, pull transmitted by, 16 

 specifications for, 63 

 stretch of, 1 7 

 Taylor's rules for, 16 

 theory of transmission of 



power by, 29 

 thickness of, 64 

 total load on, 16 

 weight of, 64 

 working tensions of, 39, 42 



Bench, belt, 45 



Cement, belt, 57 



Center to center distance of pulleys," 



ip, 75 

 Centrifugal force in belts, 35 



tension, 36 



Cleaning of belts, 19, 54, 66 

 Coefficient of friction, 31, 38 



of friction, equation for, 34 

 Cost of belts, 1 8 



total, of belt, i 

 Creep, belt, 32 

 " Cross cones," effect of running belt 



on, 67 



Crossed belts, length of, 72 

 Crowning of pulleys, 73 



Data necessary to belt maintenance, 



48 



Destruction of belts, causes of, 67 

 Direction in which belts should run, 



66 

 Dressing, belt, 54, 64, 65 



belt, too liberal application 



of, 68 



Drive, most satisfactory belt, i 

 Driving force of a belt, 41 



Endless belts, 56 



Failures, belt, causes of, 67 

 Fastening belts, methods of, 56 

 Force, centrifugal of belts, 35 

 Friction, coefficient of. See Coeffi- 

 cient of friction. 



Glue, belt, 57 

 Grease, belt, 54, 65 

 Greasing of belts, 19, 54 

 Guide pulleys, 79 



Hook for idle belts, 72 



Horsepower formulae, comparison of, 



6 



formulae, rule of thumb, 4 

 of belts, 21 

 of belts, table, 91 

 tables, use of, 23 



Humidity, effect of, on belts, 68 



Idler pulleys, 19, 75 



Initial tension, rate of fall of, 15 



tension, tables of, 91 



tension, Taylor's experiment.}, 



Joints, belt, 56 

 hinge, 61 

 laced, 57 

 wire laced, 61 



Kent, William, comments on Taylor's 

 rules, 19 



Laced joints, 57 

 Lacing, metallic, 59 



rawhide, 57 



sizes of, 64 



strength of, 64 

 Laps, belt, 56, 63 

 Length of belt, 71 



of crossed belts, 72 



of roll of belting, 72 

 Life of belts, 18 



of belts, factors influencing, 14 

 Loads, safe, for belts, 15, 16 

 Load total on belting, 16 



Maintenance, belt, 45 



data necessary for, ^f 

 of belts, cost of, 1 8 



