. The universal assistant, and complete mechanic : containing over one million industrial facts, calculations, receipts, processes, trade secrets, rules, business forms, legal items, etc., in every occupation, from the household to the manufactory. slstaace on level railway in lbs. per voa I iu :«i,i I 10»^ I ISi/i 17% 22»4 Eesistaiiceoa irre^larorcurvedroad I I I I and high winds | 13^i l-t^i I 15*11 20»,4 26Vi | Sl^i Effective PREssrES of Steam on Piston, with different de-grees of expansion, boiler pressure being assumed at 100 lbs. pe»gqnare inch. Steam cut off at f of stroke — 90 effectiv
. The universal assistant, and complete mechanic : containing over one million industrial facts, calculations, receipts, processes, trade secrets, rules, business forms, legal items, etc., in every occupation, from the household to the manufactory. slstaace on level railway in lbs. per voa I iu :«i,i I 10»^ I ISi/i 17% 22»4 Eesistaiiceoa irre^larorcurvedroad I I I I and high winds | 13^i l-t^i I 15*11 20»,4 26Vi | Sl^i Effective PREssrES of Steam on Piston, with different de-grees of expansion, boiler pressure being assumed at 100 lbs. pe»gqnare inch. Steam cut off at f of stroke — 90 effective pressure. .< I u « ^80 » u * - •• =50 • i ■■ ■■ =40 In eiperiments with Locomotive No. 4, Xortli London Railway, itwas found that in two 17 inch cylinders, 24 ins. stroke, lap of vjilve,i in., lead. -1 in., position of gear, 4th notch from middle gear, drivers,5 ft 6 ins. ower of V>oth cylinders was That the friction of lx3th valves was • eccentrics Total friction of v^ves and eccentrics or 15 per cent, of the jxjwer of the engine required to move of DRivrso Wufel^ IER ,.. The average life of a car wiieel under a load of 3^ tons, is The weight of iron rails per mile varies from 78 tons. 11 cwt.,4-S !!»., to tons. 3 cwt., 84 lbs., according as the rails range from50 lbs. to 100 lbs. weight to the yard. No. of 15 ft. rails per mile, 704 I i^o. of 18 ft rails i)er mile, 587 16 ft. eeO I 20 ft. 523 A ri*e of 60« in the tf a. crstrje of a 25 ft. raU lengthens it to 25 ftI ia. The la£t table refers to No. of rails required for single track. I ^ < „
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Keywords: ., bookcentury1800, bookdecade1870, booksubje, booksubjecttechnology
