Vibration-absorbing pad and process of manufacture

Claim 1

THE PROCESS OF MAKING A LAMINATED VIBRATION-ABSORBING PAD FOR SUPPORTING HEAVY MACHINERY AND ABSORBING VIBRATIONS DEVELOPED THEREIN, WHICH PROCESS CONSISTS IN SUPERPOSING LAMINATIONS OF NEEDLED FABRIC, EACH OF WHICH LAMINATIONS IS COMPOSED OF SISAL FIBRES AND IS COMPLETELY IMPREGNATED WITH A VINYL PLASTIC COMPOSITION, SUBJECTING THE SUPERPOSED LAMINATIONS TO HIGH PRESSURE BETWEEN PRESSURE DIES, ONE AT LEAST OF WHICH DIES HAS GROOVES IN ITS PRESSURE FACE, WHEREBY THE LAMINATIONS ARE HIGHLY COMPRESSED TOGETHER AND SOME OF THE VINYL PLASTIC INGREDIENT IN THE LAMINATIONS IS FORCED INTO AND FILLS THE GROOVES, THEREBY PRODUCING ON AT LEAST ONE FACE OF THE PAD RAISED RIBS OF THE VINYL PLASTIC COMPOSITION, WHICH RIBS IS OF SUBSTANTIAL THICKNESS AND SUBSTANTIALLY FREE FROM THE SISAL FIBRE, SUBJECTING THE DIES TO TEMPERATURE CHANGE THEREBY TO REDUCE THE VINYL PLASTIC COMPOSITION TO A SOLID STATE WITH A PERMANENT VIBRATION-ABSORBING RESILIENCY THAT IS EFFECTIVE IN ABSORBING VIBRATIONS GENERATED BY A HEAVY MACHINE THAT IS BEING SUPPORTED ON SAID PAD.