The theory and practice of jute spinning; being a complete description of the machines used in the preparation and spinning of jute yarns .. . For pressure on slip roller. Proportion of levers— Arm of slip roller = 1 ^. Arm of weight = 7^ Ratio — = — and if weight is 6 lbs. then— n 6-6 6 X 6 6 = 396 lbs. = pressure upon two balls. 212 AUTOMATIC MOTION FOR SPINNING FRAME DRAWING ROLLERS. AUTOMATIC MOTION FOR SPINNING FRAME DRAWINGROLLERS. Scale 3 to One Foot. {Messrs Thomson, Son, & Go.).

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Keywords: ., bookcentury1900, bookdecade1920, bookidtheorypracti, bookyear1921