pins added to pins 56 and 92 as have been described to provide a lid closed signal for activation of other circuitry associated with the washing machine referring now to fig8 the rotation axis 44 of axle 46 may be located directly below a point of engagement contact interface of the hook 30 and the lid 12 as so located upward motion of the lid 12 initially along tangent 140 produces an upward vector 142 on axle 46 creating minimal torque on the housing 48 and mostly upward force against the lower surface of the ledge 19 augmenting that provided by screw 122 shown in fig6 in addition the contact interface occurring between a lower surface of the tooth 28 of the hook 30 and the lower surface of the bolt hole 26 is such as to impart no torque or a slight engaging torque counterclockwise in fig8 to the hook 30 about axis 44 with upward motion of the lid 12 this is accomplished simply by ensuring that the slope at the contact interface is zero or slightly canted inward toward the lid 12 with respect to upward vector 142 this design greatly simplifies construction of the lock mechanism and is particularly well suited for the bi directional solenoid 90 described above because it allows the lock to function without continued activation of the solenoids 90 a or 90 b the slight bi stability added by the spring 80 described with respect to the contact set of fig5 ensures that unintended movement with vibration and the like does not occur referring now to fig9 sliding contact 54 described above with respect to fig5 may include a downwardly sloping spring.