British Patent Office - Abridgments Class 112 Sewing Embroidering 1921-1925 (1929)
British Patent Office · leaf 139
20 is thereby locked from longitudinal move- The lever has a curved slot to receive a pin on the ment. With four-hole buttons, the piece 29 is end of the link and the pin is moved in the slot adjusted to permit the requisite movement of the to vary the movement of the clamp by means plate 20. The… … The plate F has _ ratchet during its forward stroke, by the engagement of teeth on its under-side engaged by a panel M a projection K on the needle bar with a lever arm which is turned on its pivot to feed the work when J?, is released shortly after the commencement a pin N, on tho return stroke of…
British patents · Patents · Sewing · Embroidering · Embroidery
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