American School of Correspondence · Chicago, American school of correspondence · leaf 144
70 and 71, is called the scrolladjustment. The bend, D, is supported at three points by arms,A, B and C, instead of five, as in the first one shown, the bend 124 COTTON SPINNING. 87 being made proportionately heavier and stiffer. The arms. A andC, are connected to the bend by a stud, F, which… … M in tbe arm, prevents any circumferential movement of the bend.The arms are all made in two pieces, partly for convenience inmanufacturing and in order to set them alike when the card isfirst erected. Adjustmg screws, L, are provided for the two end 125 COTTON SPINNING. ones, which, afte^ being…
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