Too much thread tension will overstress the take-up parts and the motor. Thread size it can properly sew and tension is #92 bonded nylon, but it is best limited to #69 nylon. The maximum needle size available is #125/20, which is good for sewing through thick material. Note, that on a Singerġ5-91, the needle's flat side and eye faces left and it threads from right to left. The Singer 15-91 uses standard household series HAx1, which is available wherever home sewing needles are sold. Note the Japanned balance hand and early style bobbin winder. The bright work jones jones steel hand not plated as on later machines. It hand the Patent number and Patent date March 29th stamped on the front slide plate. It also reduces the maximum clearance under the The easiest way to confirm if your labelled machine is a Jones C. Roller foot compensates for this and allows the top layer to move freely, while still maintaining sufficient top pressure as the needle moves up. Sufficiently tensioned down to prevent the material from lifting with the needle, usually drags the top layer of sticky material out of alignment with the other layers.

Note that currently there seems to be no Model Number, Quantity or Date information for these serial. Singer Sewing Machine Serial Number Database. Sewing sticky materials, like Marine Vinyl and soft leather, requires an even-feed-walking foot, or a roller foot attachment (low shank). No Prefix Serial Numbers - Comprehensive Singer Sewing Machine Serial Number Database. This Singer 15-91 is capable of sewing cloth and Denim fabrics to over 5/16' thick with the standard foot. It was fully functional, with a rebuilt 'potted' motor. The Singer 15-91 in the photo on the left was built in 1953, according to the Singer machine serial numbers lookup (forĭouble letter prefixes).

Jones sewing machine serial numbers