23-09-2017, 01:19 PM
hi am emu details on history of scissor jack on pdf ..
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history of scissor jack on pdf
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hi am emu details on history of scissor jack on pdf ..
23-09-2017, 03:40 PM
Hydraulic jacks are mechanical devices that use hydraulic power and act as lifting devices in the lifting of heavy loads. There are many types of hydraulic jacks such as floor jack, hydraulic cylinder and long ram jack, therefore they are classified according to their maximum capacity.
The history of hydraulic jacks can be dated many years ago when the French mathematician and philosopher by the name Blaise Pascal illustrated the principle of hydraulic jack in the 17th century. Later, in 1795, the British engineer Joseph Bramah obtained a patent for certain new methods of producing and applying more power to all machines that required movement and force, and this involved the first hydraulic press. The incorporation of Richard Dudgeon began in New York as a mechanical workshop and on July 8, 1851, inventor and founder Richard Dudgeon received a patent for 'Portable Hydraulic Press'. These cats were operated by water or any other liquid such as whiskey and whale oil; the head device was the location for the fluid reservoir. During the winter, other liquids tend to freeze and thicken, therefore, the most applied liquid was whiskey and the name Whiskey Jack came into existence.
The hydraulic jack of Dudgeon had some weaknesses as the device appeared to be heavy, especially at the top due to the presence of tank in the head.
Dudgeon corrected this problem 14 years later, where he designed the liquid reservoir at the base, making the device improved and new model. The invented 1851 Jack has proven to be more powerful, portable and easy to operate compared to screws that require a lot of effort when lifting heavy devices. Dudgeon cats functions in railroad shops and shipbuilding industries. Due to a large package of orders, Dudgeon changed his machine shop by the great popular districts of Goerck Street, New York. Your Jack, however, has been high performing and functional throughout enough to ensure that the inventor of the successful financially right from the starting point. Richard Dudgeon deserves congratulations for his innumerable inventions that include:
• Steam car
• Filter Press Presses
• Steam forging hammer
• Traction Jacks
• Roller boiler tube expanders.
Hydraulic jacks are common and widely applied all over the world. They have many merits and benefits in the current generation, as they have made lifting processes easier, more comfortable and reliable compared to other types of cats. These cats have two cylinders attached to each other, and work according to the principle of Pascal's law. Common types of hydraulic jacks include floor jacks, used to lift heavy objects off the floor surface, primarily while replacing vehicle tires or working on cars. A hydraulic cylinder jack is another type with a long handle and can be put into tight spaces therefore its mainly used in rescue and search operations, and building construction. The type of long ram used in carrying out general repair work and the store press jacks are applied where a lot of pressure is required with less stress. Hydraulic jacks can lift objects from low pounds to thousands of pounds. They use gasoline, compressed air, electricity and manual energy as sources of energy. Customers of hydraulic jacks have the opportunity to choose their best types Plus, according to a power source.
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