Abstract: The invention is an improved ratcheting mechanism having a rotatable wheel with teeth, a shaft to which the wheel is affixed, at least two toggles, each with an arm for engaging a tooth of said wheel and each with an arched structure. The arched structure forms an arch over the shaft. There is also a contact for contacting either toggle to cause the arm of the contacted toggle to disengage from a tooth of the wheel and to allow rotation of the wheel in one rotational direction.