Tiltable load supporting platforms

A counter-balanced tiltable platform for receiving and supporting a load having a base, means to mount the platform on the base for tilting about a horizontal axis in either direction from a normal horizontal position, means arranged with said platform to locate a load on the platform with its centre of gravity over the horizontal axis when the platform is in said normal position and means mounted on the base to raise the platform in response to tilting of the platform in either direction from said normal position to maintain the centre of gravity of the loaded platform in a constant horizontal plane and thereby to counter-balance the loaded platform, the means to mount the tiltable platform on the base comprising an intermediate support mounted on the base to rise and fall with respect to the base and pivot means for mounting the platform on the intermediate support to tilt about said horizontal axis, said means for raising the platform in relation to the base in response to tilting of the platform in either direction from said normal position comprising means acting through and connected with the intermediate support to raise the support and thereby the platform in response to tilting of the platform in either direction from said normal position;

• wherein the improvement comprises providing the means for raising the platform with respect to the base in response to tilting of the platform from said normal position to maintain the centre of gravity of a load on the platform in a constant horizontal plane with a lever of adjustable mechanical advantage connected to said base and said platform to cater for loads of different centres of gravity about the platform.