US Patent 6.439
May 8, 1849
I do not intend to confine my invention to the use of an endless belt alone, as a revolving circular table or a cylinder maybe substituted therefor, the points being inserted in or made to project from the curved surface of either of them. What I claim as my invention or improvement, in the sewing machine, is the combination with the endless cloth holder of the curved bar or piece of metal v, for discharging the cloth from its points after being sewed, all as described.
A second improvement of the Morey and Johnson patent was also issued on May 8, 1849; this patent US 6.439 was to John Bachelder for the first continuous, but intermittent, sewing mechanism. As shown in the patent model (fig. 19), his cloth holder consisted of an endless belt supported by and running around three or any other suitable number of cylindrical rollers. A series of pointed wires projected from the surface of the belt near the edge immediately adjacent to the needle. The wires could be placed at regular or irregular distances as required. The shaft of one of the cylindrical rollers, which supported the endless cloth holder, carried a ratchet wheel advanced by the action of a pawl connected to the end of the crankshaft by a small crank pin, whose position or distance from the axis of rotation of the shaft could be adjusted.
Bachelder did not manufacture machines, but his patent was sold in the mid-1850s to I. M. Singer. It eventually became one of the most important patents to be contributed to the “Sewing-Machine Combination”.
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