Hydraulic Bottle Jack

Hydraulic Bottle Jack usage instruction
1Put the Hydraulic Bottle Jack near the tyre to replaced
2Via the accessory, the power supply of cigarette ignitor or storage battery may be connected to theHydraulic Bottle Jack.
3Take hold of the control handle and press the switchaccording to your require UP means rising,DOWN meansfalling.
4Make sure the Hydraulic Bottle Jack should not beinclining when propping up.
5In case the engine becomes very hot after 3 minutes,it should be cooled for a while then it may workcontinually.

Working principle of Hydraulic Bottle Jack
Water or oil under pressure is commonly used as a source of power for manytypes of presses, riveting machines, capstans, winches, and other machines. Thehydraulic press, or hydrostatic press, was invented by Joseph Bramah and is therefore sometimes called the Bramah press. It consists essentially of two cylinders eachfilled with liquid and each fitted with a piston; the cylinders are connectedby a pipe also filled with the liquid. One cylinder is of smalldiameter, the other of large diameter. According to Pascals law, pressureexerted on the smaller piston is transmitted undiminished through the eveliquid to the surface of the larger piston, which isforced upward. Although the pressure (force per unit of area) is the same forboth pistons, the total upward force on the larger piston is as many timesgreater than the force on the smaller piston as the area of the larger pistonis greater than the area of the smaller piston. If, for example, the smallerpiston has an area of 2 sq in. and a force of 100 lb is exerted on it, then the force on the largerpiston having an area of 50 sq in. would be 2,500 lb (10050/2=2,500). However, when the pistonsmove, the distance the smaller piston travels is proportionately greater thanthe distance the larger piston travels, satisfying the law of conservation ofenergy. If the smaller piston moves 25 in.,the larger one will only move 1 in.The hydraulic press is used, for example, to form three-dimensional objectsfrom sheet metal and plastics and to compress large objects. The HydraulicBottle Jack, also an application of Pascals law, is used to exert large forcesor to lift heavy loads. Like the hydraulic press it consists essentially of twodifferent-sized pistons contained in cylinders that are connected by a pipe.When the smaller piston is moved back and forth by a handle connected to it, itpumps a liquid into the cylinder of the larger piston, forcing the largerpiston to move. In this way a weak force applied to the smaller piston canraise a heavy load on the larger one. The hydraulic elevator is also anapplication of Pascals law.