The Singer 66 and 99 Class

The 66-1 came onto the market around the turn of the 20th Century

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


The 66-1 and 66-3 and the Kilbowie equivalent
(presumed 66K1 and 66K3)
have back clamping presser feet.

The 66-4 and 66-5 and the Kilbowie equivalent
(presumed 66K4 and 66K5)
have side clamping low shank presser feet.
For more information about these models check out the manual

Singer 99K2

Singer 99K13



These are the known 99 class

Early models (forward stitch only):

99K1 1911- 3/4 size version of the 66K1 but with standard side clamping low shank presser feet.
99K2 1921- Small tension discs; handcrank (originally)
99K5 1924-25
99K10 1922-24 Aluminium; portable (very rare)
99K13 1924-1958 Belt drive electric motor, typically with knee control
99K21 1924-54 Treadle
99K22 1924-54 Hand crank
A manual suitable for the above machines can be found here: 99K Class Manual

Later models with lever style stitch length adjustment and back-tack (reverse)

99K26 1950s Treadle with reverse
99K27 1950s Hand crank with reverse
99K28 1950s Belt drive electric motor with reverse.
99K29 1958- Treadle with reverse serial under bed after 1961
99K30 1958- Hand crank with reverse serial under bed after 1961
99K31 1958- Belt drive electric motor with reverse serial under bed after 1961

All 66 and 99 class machines use regular 15×1 domestic needles positioned with the flat (back) of the needle facing the pillar. The needle is threaded from left to right.

Polished steel
slide and throat plate

Unfortunately if you want shiny chrome you'll have to sort that out for yourself, but this new Chinese made slide plate is perfectly acceptable if you have lost the original and you want to get a vintage Model 66 or 99 Singer sewing again. I also have throat plates (needle plate) at the same price so check out the slide plate section of my shop.

Please note the original #32569 slide plate is 2mm thick, but the new replacement plates 2.5mm thick, so the plate sits just a little proud of the bed.

The #32602 (2015) throat plate is the correct 2mm thick

The plate has grooves on the back that fit to a machine mounted flat spring. Counterintuitively, a removed slide plate is replaced from the right (as pictuered).
Please take care to ensure the ends of the flat spring (A) slide into the grooves on the underside of the plate.

Superior quality Taiwanese made chrome metal "172222" bobbins

I have personally tested these bobbins in many 66 and 99class machines over the last decade

Check Spring for Singer model 66/99.
Singer part # 32575

Instructions to replace on 66 and early model 99 class
Instructions to replace on later model 99 class (from 99K26 on)

New bolt on motor kit complete with foot control

Chinese made hand crank


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