197 (#263) ############################################ WORSTED DRAWING MACHINES 5 16 Total Draft : Surface speed of front rollers: " x 50 x 35 x 90 X 100 7:59 Surface speed of back rollers : 21" x 24 x 48 x 18 x 30 Back Draft : Speed of Fallers : x 2 (double thread) x 18 x 90 X 100 Surface speed of back rollers : 23" x T X 18 x 18 x 30 I 32 Front Draft: Surface speed of front rollers : " X TT X 50 x 35 x 18 5.73 Speed of fallers : " x 2 x 24 x 48 x 18 Total Draft I.32 X 5.73 7:56 Speed of Fallers : Revs. of main shaft (240) X 38 X 18 X 2 minute : per 332 fallers per minute. Gauge Point : I X 100 X 90 One rev. of B.R. gives revs. of back shaft 5 B 55 X 18. 30 X 18 16.7 I X 48 x 24 One rev, of F.R. gives = 33 teeth moved. 35 Therefore Teeth for I rev. of F.R. 33 Rev. of back shaft: = 2 teeth in change wheel 16.7 for no draft. 2 X 21" Correction for sizes of rollers : 6.7 teeth in change wheel for no draft. And for draft (7.59) Teeth for no draft" (67) draft required (7.59) = teeth in change wheel (50) Therefore G.P. - 6.7 and G.P. x Draft Change wheel (6.7 x 7.59) 50 197
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