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[2] [3] Coal breakers were always used (with or without a tipple) at anthracite mines. [3] While tipples were used around the world, coal breakers were used primarily in the United States in the state of Pennsylvania (where, between 1800 and the mid-20th century, many of the world's known anthracite reserves were located).
On September 11, 1883, James Goold Cutler received U.S. patent 284,951, for a system connecting deposit boxes on multiple floors to a single ground-floor receptacle; the chute had to have a front of at least three-fourths glass to allow for the identification of mail clogs, and, if installed at a height of greater than two stories, an elastic cushion was to be fitted in the receptacle to ...
A cattle crush and an anti-bruise race in Australia. Chin (or neck) bar in operation during mouthing.. A cattle crush (in UK, New Zealand, Ireland, Botswana and Australia), squeeze chute (North America), cattle chute (North America), [1] [2] standing stock, or simply stock (North America, Ireland) is a strongly built stall or cage for holding cattle, horses, or other livestock safely while ...
A curved "V" (tapered) race or alley leading to a covered crush. A cattle chute (North America) or cattle race (Australia, British Isles and New Zealand) also called a run or alley, [1] is a narrow corridor built for cattle that separates them from the rest of the herd and allows handlers and veterinarians to provide medical care or restrain the animal for other procedures.
A simple open center hydraulic circuit. An excavator; main hydraulics: Boom cylinders, swing drive, cooler fan, and trackdrive Fundamental features of using hydraulics compared to mechanics for force and torque increase/decrease in a transmission. Hydraulic machines use liquid fluid power to perform work. Heavy construction vehicles are a ...
A contract for the construction of four blast furnaces each outputting 500 tons per day, [13] totaling 22 ft × 85 ft (6.7 m × 25.9 m), was awarded to the Ritter-Conley Mfg. Co. in December 1906, which at the time had blast furnaces of the same dimensions under construction for Indiana Steel Co. at Gary. The new furnaces included modern skip ...
The tools operate on the basis of the hydraulic fluid pressure of up to 720 bars (10,400 psi; 72 MPa), which must be provided from a power source. At present, there are three different means of generating pressure. The most commonly used source is a separate power unit, small petrol (gasoline) engine connected to a hydraulic pump.
A demonstration of a fire escape chute on the streets of Daegu, South Korea. An escape chute is a special kind of emergency exit, used where conventional fire escape stairways are impractical. The chute is a fabric (or occasionally metal) tube installed near a special exit on an upper floor or roof of a building, or a tall structure.