IL30576A - Ships berth fenders - Google Patents

Description

IMPROVEMENTS IN AND RELATING TO SHIPS BERTH FENDERS This invention relates to berth fenders by which is meant buffer devices adapted to be attached to a side or cushion the impact occasioned on the Jetty by a vessel and to prevent damage to both the ship and the the invention provides a ships fender including a steel torsion a rigid metal uppe and lower bearing assemblies carried by said metal a torque tube extending between said bearing assemblies and supported for rotation thereby torque arms fixed to said torque tube and extending radially therefrom and outwardly from said framework and carrying at their outer ends wooden said torsion ba located within said torque tube the lower end of said torsion bar being fixed to rotate with said torque tube when the latter is rotated in a first direction of rotation on wooden rubbin strips being moved toward the and the upper end of said torsion bar bein held against rotation in said first direction of and including interposed between said rigid metal framework and a Jetty at the side of a ships an additional absorption device being adapted and arranged to absorb the energ of an abnormally severe berthing impact without causing damage to the Jetty structure or to the said absorption device including at least one steel beam adapted to be deformed in beyond its elastic The invention will be described with reference to the accompanying Referring now the fender prises a torque tube 57 mounted for rotation within The torque tube 57 torque arms ahd carrying rubbing bars 60 and outward movement of the arms and limited by chains The torsion bar 61 has a lower splined end 61a arranged for vertical sliding movement within a bush 57a which is fast with the torque tube Carried at the upper end 61b of the torsion bar 61 is an upper face ratchet 81 whose teeth engage a fixed lowe face ratchet 82 which is held fast against rotation relative to the supporting namely the bearing 56 and associated longeron The arrangement is such that on a ship against bar 60 and causin rotation of tube the torsion bar 61 is wound with its upper end 61b being fixed against rotation by the face ratchet 81 having its teeth in locked engagement with the lower face ratchet during return movement of the rubbing bar 60 and hence of the torsion tube the teeth of the upper face ratchet 81 override the teeth of the lower ratchet 82 with the torsion bar 61 rising tically as permitted by its lower end 61a sliding in the bush 57a to permit such overrunnin of the ratchet A small elastic torsion bar 90 mounted between the upper bearing 56 and the torque tube 57 exerts return torque on the By simple removal cover 67 of the upper hearing the torsion bar 61 and the upper ratchet 81 may be withdrawn upwardly for Additionally there i provided an additional absorption device interposed between the causing damage to the structure or to the Such additional device will be in the form of a beam which is adapted and arranged between the work 52 and the as to be deformed in bending and which is so proportioned as to be ally deformed when subjected to a certain predetermined and to yield with a substantially constant force characteristic over a large horizontal By the present invention improved ships berth fenders are insufficientOCRQuality

Claims (1)

1. CLAIM IS A ships fender including a steel torsion a rigid metal upper and lower bearing assemblies carried by said metal a torque tube extending between said bearing assemblies and supported for rotation torque arms fixed to said torque tube and extending radially therefrom and outwardly from said framework and carrying at their outer ends wooden said torsion bar being located within said torque tube the lower end of said torsion bar being fixed to rotate with said torque tube when latter is rotated in a first direction of rotation on the wooden rubbing strips being moved toward the metal and the upper end of said torsion bar being held against rotation in said first direction of and including interposed between said rigid metal framework and a at the side of a ships an additional absorption device being adapted and to absorb the energy of an abnormally severe berthing impact without causing damage to the jetty structure or to the said absorption device including at least one steel beam adapted to be deformed in bending beyond its elastic A ships berth fender according to wherein said torsion bar is removably mounted within said torque tube for upward A ships fender according to Claim wherein a spring urged pawl engaged ratchet wheel is mounted on the upper end said torsion A ships berth fender according to Claim including a face ratchet viheel mounted on the upper end of the bar having a ring of downwardly facing being slidable said tube to enable the said downwardly facing teeth to be engaged from said upwardly facing teeth vhen said torsion is rotated in second direction of A ships berth fender according to Claim wherein such additional device is in the form of a beam which is adapted and arranged between the work and the jetty so as to be deformed in bending and which is so proportioned as to be plastically deformed when to a certai predetermined and to yield with substantially constant force teristic over a large horizontal A ships berth fender substantially as described with reference to the panying Attorney for insufficientOCRQuality