The Record is an early knitting machine, basically a mechanised peg loom. It can produce garter stitch quite quickly (it is also possible to knit stocking stitch, but that takes more time).
Garter stitch is worked by laying a zigzag of yarn across the pegs, then flipping the work over the headed pins on the comb. Stitch size is adjusted by adjusting the height of the comb relative to the machine (there are some metal wedge-shaped height adjusters, not shown).
