Gas cutting system

Claim 2

IN A SYSTEM FOR THE OXYGEN CUTING OF WORK ALONG A PRE-DETERMINED CONTOUR THE COMBINATION, WITH A TORCH AND MEANS FOR EFFECTING A JET DISCHARGE OF OXYGEN THEREFROM, OF MEANS FOR PROJECTING A PREHEATING GAS FLAME FROM THE TORCH INCLUDING GAS SUPPLY MEANS PLACEABLE ALTERNATIVELY IN LOW- AND HIGH-FLOW CONDITIONS AND MEANS FOR IGNITING THE PROJECTED GAS, A MOVABLE CONTROL RECORD, MEANS ACTUATED BY THE RECORD FOR PLACING THE GAS-SUPPLY MEANS IN LOW-FLOW CONDITION AND OPERATING THE GASIGNITING MEANS AND THEREAFTER SHIFTING THE GAS-SUPPLY MEANS TO HIGH-FLOW CONDITION, AND MEANS SUBSEQUENTLY ACTIVATED BY THE RECORD FOR PLACING THE JET-DISCHARGE-EFFECTING MEANS IN ACTION AND SHIFTING THE GAS-SUPPLY MEANS TO LOW-FLOW CONDITION.

Claim 3

IN A CUTTING SYSTEM EMPLOYING A STREAM OF GAS AS A CUTTING INSTRUMENTALITY, THE COMBINATION OF A TORCH FOR FORMING SAID CUTTING STREAM OF GAS, A SHUTOFF VALVE FOR INTERRUPTING THE FLOW OF THE CUTTING GAS TO SAID TORCH, A REGULATOR INCLUDING A CONTROL CHAMBER BY WHICH THE PRESSURE OF THE CUTTING GAS SUPPLIED TO THE TORCH WHEN SAID VALVE IS OPEN IS REGULATED, SAID REGULATOR, VALVE, AND TORCH BEING CONNECTED IN A SERIES RELATIONSHIP BY A MEANS FOR CONVEYING THE GAS, SAID CONTROL CHAMBER ADAPTED TO CONTAIN A FLUID UNDER PRESSURE WITH THE REGULATED CUTTING GAS PRESSURE RESPONSIVE TO SAID FLUID PRESSURE, MEANS EFFECTIVE PRIOR TO THE OPENING OF SAID VALVE FOR DETERMINING THE FLUID PRESSURE IN SAID CHAMBER, AND MEANS OPERATIVELY CONNECTED WITH SAID VALVE AND RENDERED EFFECTIVE CONCOMITANTLY WITH THE OPENING THEREOF, FOR ALTERING THE FLUID PRESSURE IN SAID CHAMBER AT A LIMITED RATE, WHEREBY TO CAUSE A GRADUAL CHANGE OF SAID REGULATED CUTTING GAS PRESSURE.

Claim 4

IN A CUTTING SYSTEM EMPLOYING A STREAM OF GAS AS A CUTTING INSTRUMENTALITY, THE COMBINATION OF A TORCH FOR FORMING SAID CUTTING STREAM OF GAS, A SHUTOFF VALVE FOR INTERRUPTING THE FLOW OF THE CUTTING GAS TO SAID TORCH, A REGULATOR INCLUDING A CONTROL CHAMBER BY WHICH THE PRESSURE OF THE CUTTING GAS SUPPLIED TO THE TORCH WHEN SAID VALVE IS OPEN IS REGULATED, SAID REGULATOR, VALVE, AND TORCH BEING CONNECTED IN A SERIES RELATIONSHIP BY A MEANS FOR CONVEYING THE GAS, SAID CONTROL CHAMBER ADAPTED TO CONTAIN A FLUID UNDER PRESSURE WITH THE REGULATED CUTTING GAS PRESSURE RESPONSIVE TO SAID FLUID PRESSURE, MEANS EFFECTIVE PRIOR TO THE OPENING OF SAID VALVE FOR DETERMINING THE FLUID PRESSURE IN SAID CHAMBER, AND MEANS OPERATIVELY CONNECTED WITH SAID VALVE AND RENDERED EFFECTIVE CONCOMITANTLY WITH THE OPENING THEREOF, FOR ALTERING THE FLUID PRESSURE IN SAID CHAMBER AT A LIMITED RATE, WHEREBY TO CAUSE A GRADUAL CHANGE OF SAID REGULATED CUTTING GAS PRESSURE.