James Wheeler Clement

US Patent:

46012508, Jul 22, 1986

Filed:

Apr 26, 1984

Appl. No.:

6/604327

Inventors:

James W. Clement - Chicago IL

Assignee:

Bakron Corp. - Lakewood CO

International Classification:

D05B 5708

US Classification:

112184

Abstract:

A rotary loop taker which includes a replaceable loop seizing point mounted on a substantially annular frame, for use in a lock-stitch sewing machine. The loop seizing point has a supporting lug that extends downwardly from immediately behind the base portion of the tapered forward end of the loop seizing point. The supporting lug forms a smoothly curved junction with the base portion of the tapered forward end of the loop seizing point. The rearwardmost position on the smoothly curved junction to which said needle thread loop is pulled by the rotating loop taker lies a first distance from the nearest point on the crack formed by the supporting lug and the wall of the annular frame against which the lug abuts that is sufficient to produce a second distance measured normal to the taut needle thread loop that will avoid snagging the needle thread in the crack just referred to during operation of the sewing machine. The supporting lug has a continuation portion below the smoothly curved junction that is smoothly shaped to avoid letting any needle thread loop that may move downward as it falls slack from the tapered forward end base portion during normal operation of the sewing machine pass either partly or entirely beneath the lug.