Amphibious industrial landing stages which can be run aground and means for the displacement of heavy loads to the grounds
OwnerLouis J. Jourdaninventor
Life of this patent
Estimating the term…
Abstract
Amphibious landing stages or heavy loads are moved over the ground on systems of shoes. A landing stage comprises two port and starboard sets of legs fitted with shoes, which are themselves fitted with soles. Jacks are provided, to enable the sliding of a shoe on its sole, when the sole is applied to the ground, and to enable the reverse motion when the sole is raised. Other jacks either raise the legs or lower them. The legs are lodged inside lockers or wells by a simple locking device which also allows them to be removed. The stage is usable for temporary industrial installations, for wharves or jetties, serving for the displacement of very heavy loads.
Claims10
Transport means for displacement of heavy loads, on the ground, on a beach, and in shallow water, said transport means comprising sets of practically vertical leg means mounted to raise and lower in lockers made in the load to be displaced, the lower end of each leg means resting directly on the top of a shoe means capable of sliding over the surface of an associated sole means, whereby the full weight that is supported by said leg is transferred directly through said shoe to the underlying sole, jack means for controlling the leg means, shoe means, and sole means, the displacement of the load occurring by operating jack means to cause the leg means to move down, thus causing the load to rise, then by operating other jack means for causing the shoe means to slide over the sole means associated with them, said other jack means working in one direction to displace the complex formed by the load and the leg means, relative to the sole means applied to the ground, then by lifting the leg means to set the load down, and then by displacing the sole means while they are raised relative to their shoe means by working the other jack means in the opposite direction, said leg means being movable and comprising, at their upper ends, arm means attached to each leg for engaging a groove within the cross section of its associated locker and thereby locking the leg in position, and means for automatically moving said locking means to their locked position when a leg means is pushed into a locker and when said locking means reach the groove in said cross section of the associated locker.
Transport means for displacement of heavy loads, on the ground, on a beach, and in shallow water, said transport means comprising sets of practically vertical leg means mounted to raise and lower in lockers made in the load to be displaced, the lower end of each leg means resting directly on the top of a shoe means capable of sliding over the surface of an associated sole means, whereby the full weight that is supported by said leg is transferred directly through said shoe to the underlying sole, jack means for controlling the leg means, shoe means, and sole means, the displacement of the load occurring by operating jack means to cause the leg means to move down, thus causing the load to rise, then by operating other jack means for causing the shoe means to slide over the sole means associated with them, said other jack means working in one direction to displace the complex formed by the load and the leg means, relative to the sole means applied to the ground, then by lifting the leg means to set the load down, and then by displacing the sole means while they are raised relative to their shoe means by working the other jack means in the opposite direction, said leg means being movable and comprising, at their upper ends, arm means attached to each leg for engaging a groove within the cross section of its associated locker and thereby locking the leg in position, and means for automatically moving said locking means to their locked position when a leg means is pushed into a locker and when said locking means reach the groove in said cross section of the associated locker, means for unlocking the locking means responsive to an external control in order to move the associated leg means out of its locker, said locking means comprises a first set of two lever arms symmetrically pivoting around a first shaft fixed on the top of the leg means, a second set of two lever arms symmetrically pivoting around a second shaft, each of said second arms respectively being pivotally mounted on an arm, said two sets of arms articulating to form a quadrilateral figure, the second arms being appreciably shorter than the first arms, the first and the second arms locking in position in an upward-open angle which is positioned with the ends of the first arms engaged in the groove within the locker, said ends of the first arms supporting the load when the leg means are moved down, and the second arms serving as supports which prevent the first arms from closing when the leg means are lifted and are hanging by said locking means.
Dependencies are inferred from the claim text.