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Singer can tell you that it's quite a chore to build features into a machine like this ... And they're frank to give Doehler-Jarvis major credit for making their job easier with a new method for designing and producing precision parts. That means 99% of all the NA serial numbered sewing machines were not made in 1951.We call this precise new way of making things, "Tripod-Control Dimensioning". With it they could control precision of and between two (or more) die castings of an assembly. 1952-1957 The majority of Singer 301/301A sewing machines where made between 1952-1957.It has been found that if the parts are inclined less; than about eight degrees from vertical, a clear stitching point is not obtained.It was patented to Singer Manufacturing Company on 5 February 1946. you never saw production flow more smoothly when complex precision parts are made by one company, finished and assembled by another. (Made of die-cast aluminum for light weight and sturdiness) In the photo above the two major Doehler-Jarvis die castings that frame "Singer's new Model 301" have been assembled, then sliced down the middle to show the (Tripod-Control) method.It's the only combination portable and cabinet model on the market. In over 65 years none of these Singer 301's have ever been located meaning they were most likely destroyed after testing, but one never knows.(Conversion from one type to the other takes only seconds.) Yet the machine, including motor only weighs 16 pounds. Then the idea spread in both the Doehler-Jarvis and the Singer plants. Made in 1951 The The 301, 301A, 401A and 403A, all with NA serial numbers, were not manufactured until 1952, 1953, 19, respectively.a new way to build precision into parts and make a fine product finer than ever. It is metal gear driven, no belt that can slip, with 1500 stitches per minute, portable and full size with a carrying handle and it fits in a cabinet.
In one minute it can throw up to 1,500 stitches into your lady's crinolines. Many had to be refurbished, a lot of people state they are to loud and noisy, cheap plastic assembly, scratches easily, extension tray cracks and is hard to open, lots of problems with the bobbin holder and they surely were not built to last a lifetime, and then some, like the Singer 301. These 30 machines went through rigorous testing and inspection of parts for several months as it was an entirely new sewing machine.It was the first family sewing machine to sew up to 1500 stitches per minute. (1,000 with the Centennial Badge and 9,000 with the new Black Band Singer Badge) (Revolutionized the sewing machine-of-tomorrow with a design to make home sewing easier) In 2011, the Singer 160 Limited Edition was introduced for the 160th year anniversary, 1851-2011.There were many new features that made it the Ultimate sewing machine Singer Manufacturing Company ever built, past or present. (Inspired by Classic design, modern features and traditional touches) The Singer Portable with Handles!What had been discovered was the way to extend a familiar two-dimensional control . The Singer 301 was the first model to be manufactured and the Model Number Tag was simply 301.
It was not until 1 January 1953 that Singer identified the Anderson, South Carolina factory by placing the suffix "A" after the model number when the first 301A was manufactured, NA185751-NA500000 and NB000001-NB200000 all had the 301A tag.
It was the first family sewing machine ever made that was a cabinet and portable all in one. used even in the first rough sketches of the new product . Every 50 years Singer introduces the world's most advanced home sewing machine to commemorate an Anniversary Year.