The bar going through the two springs isn’t not entirely rigid to the clasp because its mounts on either side of the clasp are somewhat loose. As I open and close the clasp cover I can see the bar ends move ... not completely freely, but also not entirely immovable.
View attachment 1143210
And, my armchair engineering assumes that if that bar were rotated toward the base of the clasp, the long armed spring inside would torque toward holding the floating clasp tooth closed
Click to expand...