Class 27 Survey Results
There are 3 machines included in the survey ranging from 1907-1910, 2 treadles and one portable electric (foot pedal).
The 27 has a shuttle bobbin, one machine (1908) with high mounted bobbin winder and the other two (1907, 1910) with low mounted bobbin winder. (Editor's Note: It is my belief that the high mounted bobbin winder machine is actually a 127.)
Two machines had spoked balance wheels with chrome edges (1907, 1910), one machine had a solid balance wheel (1908).
They all had shiny black finishes and flat face plates and round plates on back right side with floral or grape designs.
The stitch length adjuster is an unmarked knob on the right side. Model 27 does not have a reverse or zig zag stitch option.
The upper thread tension is not numbered, located on the left side of the front of the machine. The machines had assorted decals.
The head measures 14.5 inches from the face plate to the far end of the balance wheel. The bed of the machine measures 16.5 inches long by 8 inches wide. It has the large 1 5/8 inch Singer medallion. The portable has a blue fabric covered case which detaches from the base of the machine and pulls off.
The 27 has straight needle, low shank.
Class 28 Survey Results
There are 2 machines included in the survey ranged from 1903 - 1923.
Both were hand crank machines with shuttle bobbins and high mounted bobbin winders. Both had spoked chrome edged balance wheels.
They had shiny black finishes and flat face plates (left side) both with the grape design. The 1903 machine had a black and gold plate and the 1923 machine had an upside-down shaped plate with the grape design on the back right side.
The stitch length adjuster is an unmarked knob on the front right side of the machine. The 28 had no reverse or zigzag stitch.
The upper thread tension is an unmarked knob on the left side in the front. The decals vary but tend to be heavy florals. The 28 has the large 1 5/8 inch Singer medallion.
The head measures 12.25 inches from face plate to the far edge of the balance wheel and the bed measures 12 inches long by 6.5 inches wide.
The machines were straight needle and low shank. Both machines in the survey were portables in bentwood cases.
Class 27 and 28 pictures and additional information can be found at ISMACS International.