mount 40 the lock pin 41 extends down from the pin mount 40 through the pin aperture 17 and when the assembly is in a locked position 10 the lock pin 41 extends into a recess 22 in the lock plate 21 the biasing section 35 of the axle 32 has a smaller radius than the other sections 33 34 and is coaxial with the attachment section 33 a spring 42 fits over the axle 32 in the biasing section 35 and is held in place against the distal surface 38 of the latching section 34 by one or more retention washers 43 and a cap 44 the spring 42 is a small compression spring with partially straightened ends that extend away from the spring 42 to form prongs 45 the prongs 45 have a length that allows them to contact both the latch post 37 and the biasing post 20 laterally as shown the cap 44 fits into a recess in each portion 14 15 of the housing 12 stabilizing the locking mechanism 12 and allowing the axle 32 to rotate about its main axis with which the attachment section 33 biasing section 35 axle washer 36 cam 38 spring 42 and cap 44 are coaxial in the preferred embodiment the handle 11 can be rotated about its lengthwise axis in a clockwise or counterclockwise direction so that no time is spent trying to figure out which way to turn the handle 11 to raise the lock pin.