Dating wertheim treadle sewing machine
Later versions 99K31 had a stitch length up-down lever with reverse stitch and numbered tension dial - Year 1955 The Singer 15K is always recognised by its tension unit being on the left face of the machine.Its bobbin had to be inserted into a bobbin case, then the case was inserted into the machine vertically to the left of the needle.The Singer 201k was named the Rolls Royce of sewing machines because it was super smooth in operation thanks to the full rotary hook and precisely made carbon steel gears.It had smoothness that other sewing machine manufacturers could only dream about. The Singer 201K was cast iron in Black with a round neck body, also made with an Aluminium body which had a square neck.It always look a neater machine because of its compact size.The Singer model 128K also had the vibrating type shuttle.The Aluminium body machines were made in Black/Gold, Beige or Beige/Brown.First introduced in 1935 and continued in production up until 1962 Despite the differing body shapes and apart from it's smoothness, the 201K can be recognised by the large disc with the stitch length lever protruding from it.
As the site owner I have been online freely sharing and maintaining information about this fascinating subject for 18 years since 1995.It had a larger bed size at 14-1/2" The Singer 128K was manufactured around the same time as the 127K - 1912.The difference was the 128K was smaller at only 12-1/2" bed size.It's fairly easy to date Singer machines from the serial numbers but other makers cause more problems -- and more questions to the ISMACS mail and internet query services.Pfaff machines are popular in the USA and until recently we had no way of dating them from serial numbers.
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The Singer 221K was the same machine without the tubular bed, it also had the lift up fabric table like the 222K Both the 222K and 221K were tiny machines known as the original Singer Featherweight machines.