. Machine design. .8 3036 425460 7284 98. Wire Rope Transmission. Wire ropes havebeen used to transmit power where the distances weretoo great for belting or hemp rope transmission. Theincreased use of electrical transmission is graduallycrowding out this latter form of rope driving. For comparatively short distancesof from 100 to 500 yards wire rope stilloffers a cheap and simple means ofcarrying power. Th
. Machine design. .8 3036 425460 7284 98. Wire Rope Transmission. Wire ropes havebeen used to transmit power where the distances weretoo great for belting or hemp rope transmission. Theincreased use of electrical transmission is graduallycrowding out this latter form of rope driving. For comparatively short distancesof from 100 to 500 yards wire rope stilloffers a cheap and simple means ofcarrying power. The pulleys or wheels are entirelydifferent from those used with manilaropes. Fig. 84 shows a section of the rimof such a pulley. The rope does nottouch the sides of the groove butrests on a shallow depression in awooden, leather or rubber filling at the bottom. Thehigh side flanges prevent the rope from leaving thepulley when swaying on account of the high speed. The pulleys must be large, usually about 100 times13. Fig. 84. 194 MACHINE DESIGN. the diameter of rope used, and run at comparativelyhigh speeds. The ropes should not be less than 200feet long unless some form of tightening pulley is used.—Table XXXIV. is taken from Eoebling. Long ropes should be supported by idle pulleys every400 feet. TABLE XXXIV. TRANSMISSION OF POWER BY WIRE ROPE. Showing necessary size and speed of wheels and rope to obtainany desired amount of power. 03 o S © © is 5£ ° o ?*! i> s © -u ©© ft Q<3 o o w St o o 11 II ft 4S ©© ft i a 5 S oo 4 80 5-8 10 80 11-16 100 5-8 100 11-16 73. 120 5-8 5. 120 11-16 140 140 11-16 5 80 7-16 11 80 11-16 100 7-16 100 11-16 120 7-16 120 11-16 140 7-16 140 11-16 6 80 1-2 12 80 3-4 100 1-2 100 3-4 120 1-2 120 3-4 140 1-2 140 3-4 7 80 9-16 13 80 3-4 100 9-16 100 3-4 120 9-16 120 3-4 8 80 5-8 22. 14 80 7-8 148
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1906
