Metallurgical apparatus – Means for cutting solid metal with heat – e.g. – blowpipes – With wheeled carriage torch mount
Patent
1976-06-30
1977-10-04
Lake, Roy
Metallurgical apparatus
Means for cutting solid metal with heat, e.g., blowpipes
With wheeled carriage torch mount
266 76, B23K 710
Patent
active
040520404
ABSTRACT:
A cutting torch apparatus comprising a cutting torch arranged to be mounted on a movable frame for movement over the workpiece with the torch comprising a torch body and support therefore integrated into a double acting hydraulic cylinder and piston device in which the torch body is equipped as a piston and is reciprocably mounted in a cylinder through which the torch body extends to dispose the torch nozzle for application to the workpiece. The torch body is equipped with a feeler or guide member mounted for a lost motion movement range axially of the nozzle and having a plurality of feeler elements in coplanar relation that ride on the workpiece in spaced apart relation about the nozzle. The piston and cylinder device are incorporated in a hydraulic system, that includes a hydraulic pressure liquid and a hydraulic pressure liquid flow orienting or directional control valve of the mechanical servo type, for supporting the torch body and moving same axially of its nozzle. The feeler member and servo valve are operably connected for translating the movement of the feeler member in its lost motion range, due to elevational changes in the workpiece, as the torch moves across same, into adjustment of the servo valve to maintain the torch nozzle at the desired predetermined spacing above the workpiece, as the cutting proceed.
REFERENCES:
patent: 2249413 (1941-07-01), Bechtle et al.
patent: 2766982 (1956-10-01), Bechtle et al.
patent: 3595545 (1971-07-01), Sitnichenko et al.
patent: 3980126 (1976-09-01), Eberle
Bell Paul A.
Lake Roy
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