The 66-1 came onto the market around the turn of the
Drop feed lock stitch horizontal oscillating hook with stationary bobbin
case and drop in bobbin for home use.
The 66-1 (treadle) and 66-3 (hand crank) were developed at Singer's Elizabethport
factory in the USA and went on the market around 1902 (according to ISMACS).
Historical documentation on 66K (Kilbowie) submodel numbers appears to
have been lost so I am only presuming Kilbowie used the same submodel
numbers. The 66-1 and 66-3 and the Kilbowie equivalent (presumed 66K1
and 66K3) have back clamping presser feet. The resoning behind haveing
a seperate presser foot system for a single model is lost knowledge.
Also unique to the 66 and 66K are the decal sets commonly known as "Red
Eye" (only used on Elizabethport models) and "Lotus" (mostly
used on Kilbowie models). In the 1920s the back clamp presser foot was
made obsolete in preference for the low shank side clamping foot used
on most domestic models with the introduction of the 66-4 and presumed
66K4. The Stitch length control on all 66K was by thumb screw. Very few
Elizabethport 66 class machines were imported to Australia and Kilbowie
production of the 66K ceased at the start of WW2.
Bed size for all 66 class 37cm × 17.8 cm