Dont know if these will help. Above are three pieces.
Knob on top.
Then the hook that goes in or out of little hole on machine base. It is like a washer with hook jutting out.
Third is j-type hook that is attached into knob and goes through to the washer/hook above and through base to underside.
Below is the remainder of j-type hook with a nice heavy spring around the pist of this hook.
Note the difference in spring. Tightened is open to lift headd back. Loose is when the abouve washer hook is in hole of base making secure to close lid and drop machine to hide in cabinet.
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