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A jaw or toggle crusher consists of a set of vertical jaws, one jaw is kept stationary and is called a fixed jaw while the other jaw called a swing jaw, moves back and forth relative to it, by a cam or pitman mechanism, acting like a class II lever or a nutcracker. The volume or cavity between the two jaws is called the crushing chamber.
The jaw bucket works with the hydraulic system of the excavator. The hoses to the excavator, for intake and drain the oil are connected directly to the crusher bucket. A hydraulic valve block regulates the oil flow and the oil pressure to the correct amount of the hydraulic motor leave. The movement is transferred to one of the two crushing ...
The spelling "vise" is mentioned in Samuel Johnson's 1755 dictionary. [3] This spelling is orthodox in the United States. The spelling "vice" can be traced back to 1584, for the clamping sense of the word. [4] This is the current spelling in the English speaking world except for the United States.
Two-jaw chucks are available and can be used with soft jaws (typically an aluminium alloy) that can be machined to conform to a particular workpiece. It is a short conceptual leap from these to faceplates holding custom fixtures, wherein the part is located against fixed stops and held there with toggle clamps or toe clamps.
This metal device featured a plate that sat below the victim's jaw, which was connected by a frame to the head cap. As the torturer slowly twisted the handle, the gap between the head cap and plate decreased, crushing the skull, including the teeth, mandible and facial bones, and ultimately inducing death. Even if the torturer stopped before ...
A hydraulic spreader in use, seen here widening a window on the door of a Volkswagen Golf Mk2 to allow fire crews access into the vehicle. The Hurst Rescue Tool was invented by George Hurst, circa 1961, after he viewed a stock car race accident in which it took workers over an hour to remove an injured driver from his car.
The Reverse Twin block appliance in Figure 18 is used for the treatment of Class III malocclusion, where the lower jaw protrudes too far forward. The design of these appliances is reversed compared to standard Twin Blocks, allowing for the application of appropriate forces to correct the misalignment [ 5 ] by restricting further growth of the ...
Jaques' family had fled Revolutionary France and eventually immigrated to Australia in 1876. In 1885 Edward finished his engineering apprenticeship in Melbourne prior to forming a company with Edwin Phillips as Phillips and Jaques, producing rock crushers for quarries. The partnership was dissolved in 1888 and Edward went into partnership with ...