RRB RPF RPSF SI and CONS Model Papers 8 with solutions

(3) On September 10, 1846, Elias Howe was awarded the first United States patent (U.S. Patent 4,750) for a sewing machine using a lockstitch design. His machine contained the three essential features common to most modern machines: a needle with the eye at the point, a shuttle operating beneath the cloth to form the lock stitch, and an automatic feed.