+------------------------+------+-------+-------+------+--------+-----+ | | | Stud | | |Circumf.| | | | Rack | and | | Beam |Take-up | | | |Wheel.|Carrier|Pinion.|Wheel.|Roller. |Divi-| | | | Wheel.| | | |dend.| +------------------------+------+-------+-------+------+--------+-----+ |J. Harrison & Sons, now}| | | | | | | | J. Dugdale & Sons }| 50 | 100 | 12 | 75 | 15 | 528 | | | | | | | | | |H. Livesey & Co. }| | | | | | | |Willan & Mills }| | | | | | | |J. Dugdale & Sons }| 50 | 120 | 15 | 75 | 15 | 507 | |J. & R. Shorrock }| | | | | | | | | | | | | | | |Butterworth & Dickinson | 50 | 100 | 12 | 75 | 15 | 528 | |W. Dickinson & Sons | 50 | 120 | 15 | 75 | 15 | 507 | |Geo. Keighley | 50 | 140 | 15 | 78 | 14-1/2 | 637 | |Pickles | 24 | 89 | 15 | 90 | 15 | -- | +------------------------+------+-------+-------+------+--------+-----+ Pickles’ gear also has a swing pinion 24, and 2 change wheels; to find the change wheel required, multiply the change wheel on the rack stud by the picks per quarter inch, and divide by 9-- Equal to 4 teeth per pick for a 36 change wheel. " 3 " " " 27 " " " 2 " " " 18 " " By using this motion, which is shown on Fig. 23, both heavy and light pick cloth can be woven without a great variation in the wheels. To weave heavy pick cloth with, say, the first-named motion, the rack wheel might be increased to 60 from 50, and the dividend would then be 634. In some looms a letting-off motion works in conjunction with the take-up, to release the yarn on the beam at a fixed rate. THE WEFT STOP MOTION.