Fig. 12 shows the third stage. The under thread has been enclosed by the needle thread, and the thread take-up lever is being raised to tighten the stitch. Stitch Completed Fig. 13 shows the stitch… 

ROTARY HOOK Under Thread Enclosed by Needle Thread Fig. 13 shows the third stage. The loop of needle thread has been cast off from the hook, the under thread has been enclosed by the needle… 

OSCILLATING HOOK Point of Hook Entering Loop of Needle Thread Fig.10 shows the first stage in stitch formation. The thread leading to the needle is loosened, because the thread take-up lever has begun its descent… 

OSCILLATING HOOK Stitch Completed Fig. 12 shows the third stage. The under thread has been enclosed by the needle thread, and the thread take-up lever is being raised to tighten the stitch. Fig. 13 shows… 

OSCILLATING HOOK Fig.10 shows the first stage in stitch formation. The thread leading to the needle is loosened, because the thread take-up lever has begun its descent the needle, after having descended to its lowest… 

OSCILLATING SHUTTLE Under Thread Enclosed by Needle Thread Fig. 13 shows the third stage. The loop of needle thread has been cast off from the shuttle, the under thread has been enclosed by the needle… 

OSCILLATING SHUTTLE Point of Shuttle Entering Loop of Needle Thread Fig. 11 shows the first stage in stitch formation. The thread leading to the needle is loosened, because the thread take-up lever has begun its… 

VIBRATING SHUTTLE Shuttle Thread Enclosed by Needle Thread Fig. 3 shows the third stage. The shuttle has passed through the loop of needle thread, the shuttle thread has been enclosed by the needle thread, and… 

Fig. 1 shows the first stage in stitch The thread leading to the needle is loosened, because the thread take-up lever has begun its descent; the needle, after having descended to its lowest point, has… 

It will be seen from the preceding description and illustrations, that the basic mechanisms now in use for making the lock stitch comprise a vertically moving bar carrying an eye-pointed needle for the upper thread,…