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HEPWORTH IRON CO ENGINEERING L
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HEPWORTH IRON CO ENGINEERING L
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Application filed by HEPWORTH IRON CO ENGINEERING LfiledCriticalHEPWORTH IRON CO ENGINEERING L
Publication of ES277757A1publicationCriticalpatent/ES277757A1/en
Perforating, Stamping-Out Or Severing By Means Other Than Cutting
(AREA)
Bending Of Plates, Rods, And Pipes
(AREA)
Abstract
Improvements in hydraulically controlled copying machines, characterized by comprising a piston and a cylinder for the movement of the tool, with the surface of the head side of the piston greater than that of the rod side, and with the side of the rod permanently open to a oil supply at constant pressure; a servo-valve driven by a spring, regulated by a universal punch, in such a way that in the direction of the opening of the valve, the head side of the piston receives oil through the valve, from the supply of said oil at constant pressure, and in the opposite direction of opening the valve, the head side of the piston is open to the exhaust; the piston and the cylinder and the tool, are prepared so that the movement of advance of this is carried out by the excess of balance of the load on the side of the piston rod, by the load acting on the head side, and a Adjustable restriction valve controls the oil flow to the valve from the supply of the valve at constant pressure. (Machine-translation by Google Translate, not legally binding)
ES0277757A1962-05-021962-05-28Improvements in hydraulically controlled copy machines (Machine-translation by Google Translate, not legally binding)
ExpiredES277757A1
(en)
Centrifugal regulator, especially for the regulation of the injection point or the ignition of combustión engines (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of controls of admission and exhaust valves for combustión engines by liquid. (Machine-translation by Google Translate, not legally binding)