Abstract: A securing device includes a frame having first and second pivot points spaced apart from one another, a travel member extending vertically between the first and second pivot points and movable generally linearly between a lowermost position and an uppermost position, a first arm pivotally coupled to the frame at the first pivot point, and a second arm pivotally coupled to the frame at the second pivot point. First and second intermediate links are pivotally coupled to the first and second arms, respectively, and pivotally coupled to the travel member. A biasing element imparts force directly or indirectly upon the first intermediate link to maintain the travel member at the lowermost position when the travel member is at the lowermost position, the force biasing the first intermediate link to impede the travel member from moving to the lowermost position when the travel member is not at the lowermost position.