Yep, that's the needle, presser feet, and feed dog of a Bernina sewing machine. OK, the needle is obvious. The presser feet look like feet, but what's a feed dog? That's what sneaks up out of the slots in the round plate at the bottom. It grabs the material as you sew. The feet are in the up position. When sewing, the lever at top left is thrown and the feet come down against the material. The needle moves up and down, the feed dog grabs and controls the material, and the bobbin turns. The magic is that the bobbin grabs thread from the needle (there is no thread in the needle in this image) and interlocks it with thread from the bobbin. Quite an ingenious invention. The bobbin (which you can't see in this picture) sits beneath the round plate. You can just make out some white thread coming out from the bobbin.
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