Misplaced Pages

#139860

29-484: The building, located at 411 Elm Street on the northwest corner of Elm and North Houston Streets in downtown Dallas , is a Texas Historic Landmark. The site was originally owned by John Neely Bryan . In the 1880s, Maxime Guillot operated a wagon shop on the property. In 1894, the Rock Island Plow Company bought the land, and four years later constructed a five-story building for its Texas division,

58-410: A hook. Snatch blocks may be used to change direction or increase the pulling power and a variety of specialized hooks may be attached to the main hook, including hooks which attach to specific parts of the car. J-hooks, which look somewhat like blunt meat hooks are used to hook around axles. Mini-J hooks can be used if there is a tow loop provided, and R and T hooks are designed to hook into slots cut by

87-545: A line on a sailboat , the crew member turns the winch handle with one hand, while tailing (pulling on the loose tail end) with the other to maintain tension on the turns. Some winches have a "stripper" or cleat to maintain tension. These are known as "self-tailing" winches. The earliest literary reference to a winch can be found in the account of Herodotus of Halicarnassus on the Persian Wars ( Histories 7.36), where he describes how wooden winches were used to tighten

116-413: A synthetic fibre cable, attached at the other end to the glider. The cable is released at a height of about 400 to 700 m (1,300 to 2,300 ft) after a short, steep climb. Search and Rescue helicopters are often equipped with winches to avoid having to get the helicopter dangerously close to obstacles, or into ocean troughs, allowing rescue teams to be lowered and evacuees to be extricated while

145-451: A transmission. Lever winches are winches that use self-gripping jaws instead of spools to move rope or wire through the winch. Powered by moving a handle back and forth, they allow one person to move objects several tons in weight. This is a vertical spool with a ratchet mechanism similar to a conventional winch, but with no crank handle or other form of drive. The line is wrapped around the spool and can be tightened or reeled in by pulling

174-643: Is a major street in Dallas , Texas . The street marks the east edge of Dealey Plaza . The street crosses the Trinity River at the Houston Street Viaduct . Completed in 1910, the bridge was the first permanent crossing of the river. This Dallas , Texas -related article is a stub . You can help Misplaced Pages by expanding it . This Texas road-related article is a stub . You can help Misplaced Pages by expanding it . Winch A winch

203-531: Is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope or wire rope (also called "cable" or "wire cable"). In its simplest form, it consists of a spool (or drum) attached to a hand crank . Traditionally, winches on ships accumulated wire or rope on the drum; those that do not accumulate, and instead pass on the wire/rope (see yacht photo above), are called capstans . Despite this, sailboat capstans are most often referred to as winches. Winches are

232-430: Is referred to as a "hidden winch" as the hook and fairlead hides behind a flip-up front number plate, the winch itself is not visible. The snubbing winch is used to pull vehicles out of mud, snow, sand, rocks, and water, and to pull vehicles through or over obstacles. The winch is made of cable made up of a braided synthetic rope, or a steel cable wrapped around a motorized drum. Each is controlled electronically, allowing

261-566: The Kite balloons used during the First World War for artillery spotting are usually tethered with a winch, which can be used to lower the balloon, either to relocate it, or to bring it down quickly to prevent it being shot down by enemy aircraft. Larger man carrying kites often used winches to raise and lower them. Towed gunnery targets, used to train anti-aircraft gunners , and both fighter pilots and aircraft gunners, are run out behind

290-408: The fishing nets . The main feature that legally distinguishes a tow truck from a conventional truck in many jurisdictions is the presence of a winch, which is used to either extract disabled or immobilized vehicles, or to load them onto flatbed/tilt and load type tow trucks. These may be electrically or hydraulically powered from a power take-off , and is wound with a wire cable and equipped with

319-747: The Dallas County Administration Building was dedicated in March 1981. On President's Day 1989, the sixth floor opened to the public, for an admission charge, as the Sixth Floor Museum of assassination-related exhibits. On President's Day 2002, the seventh-floor gallery opened. The gallery opened in February 2002 with the exhibit: "The Pulitzer Prize Photographs: Capture the Moment". A $ 2.5 million renovation turned

SECTION 10

#1732776457140

348-715: The Southern Rock Island Plow Company. In 1901, the building was hit by lightning and nearly burned to the ground. It was rebuilt in 1902 in the Commercial Romanesque Revival style and expanded to seven stories. In 1937, the Carraway Byrd Corporation purchased the property, but they defaulted on the loan. It was sold at public auction in July 1939 and purchased by D. Harold Byrd . Under Byrd's ownership,

377-713: The Warren Commission that he had the option to assign Oswald to either building on his first day at work. "Oswald and another fellow reported for work on the same day [October 15] and I needed one of them for the depository building. I picked Oswald." This second building was eventually destroyed to make way for the Woodall Rodgers Freeway . The mayor of Dallas, Wes Wise , saved the Texas School Book Depository from imminent destruction, preserving it for further research into

406-407: The basis of such machines as tow trucks , steam shovels and elevators . More complex designs have gear assemblies and can be powered by electric, hydraulic , pneumatic or internal combustion drives. It might include a solenoid brake and/or a mechanical brake or ratchet and pawl which prevents it unwinding unless the pawl is retracted. The rope may be stored on the winch. When trimming

435-416: The boarder in at a speed ranging from 25 to 40 kilometres per hour (16 to 25 mph). The winch may be mounted to a vehicle, set into the ground by stakes, or tied to a tree. The cable may also be run through pulleys mounted offshore so that it pulls the person away from where the winch is located, and multiple pulleys may be used to multiply the force applied by a small but high revving motor instead of using

464-489: The building remained empty until 1940, when it was leased by grocery wholesaler John Sexton & Co. Sexton Foods used this location as the branch office for sales, manufacturing, and distribution for the south and southwest United States. In November 1961, Sexton Foods moved to a modern distribution facility located at 650 Regal Row Dallas. By then, the building was known locally as the Sexton Building. The building

493-758: The cables for a pontoon bridge across the Hellespont in 480 BCE. Winches may have been employed even earlier in Assyria . By the 4th century BCE, winch and pulley hoists were regarded by Aristotle as common for architectural use ( Mech . 18; 853b10-13). The yacht Reliance , American defender of the 1903 America's Cup , was the first racing boat to be fitted with modern winches below decks. The Reliance's competitors relied on muscle power using topside mounted capstans and windlasses , which would soon be replaced in most applications by winches, including on fishing boats , where they are used to bring in

522-479: The helicopter hovers overhead. Helicopter winches are also used for heli-logging and for airlifting oversized cargo, such as vehicles and other aircraft, although the winch in these cases is only used to reduce the hazards to flying with a loose cable hanging below the helicopter. Stationary balloons, such as the barrage balloons used during the Second World War to discourage marauding aircraft, and

551-420: The manufacturer in the underside of the frame on many cars. Axle straps may also be used, when there are few other places to attach. Off-road vehicles may be equipped with recovery tools such as winches on the front and back bumpers, usually mounted to a winch bar or frame mounted metal bumper. Less commonly it is mounted on a specialised metal plate "hidden winch mount" behind the vehicle's stock bumper, this

580-448: The operator to control the winch speed. Modern vehicles typically use electric winches running off the car's 12V starter or 24V secondary battery. The winch is either controlled with a detachable cable, a button inside the car or wireless remote. Older vehicles may have a PTO winch, controlled via the car's transmission , a secondary clutch maybe used so the vehicle does not need to be moving while winching. Some winches are powered by

609-447: The president's murder. The Texas School Book Depository Company moved out in 1970. The building was sold at auction to Aubrey Mayhew , a Nashville, Tennessee music producer and collector of Kennedy memorabilia, by the owner D. H. Byrd . In 1972, ownership reverted to Byrd. In 1977, the building was purchased by the government of Dallas County . After renovating the lower five floors of the building for use as county government offices,

SECTION 20

#1732776457140

638-533: The pressure generated in the hydraulic steering system . The high lift jack or come-along is used for manual winching. Gliders are often launched using a winch mounted on a trailer or heavy vehicle. This method is widely used at many European gliding clubs, as an inexpensive alternative to aerotowing. The engine is usually a gas/petrol, LPG or diesel , though hydraulic fluid engines and electrical motors are also used. The winch pulls in 1,000 to 1,600 m (3,300 to 5,200 ft) of high-tensile steel wire or

667-403: The stage floor and used to move large set pieces on and off. Wakeskate winching is a sport where a person on a waterski or snowboard is propelled across the water with a winch. The winch consists of a gas-powered engine, spool, rope, frame, and sometimes a simple transmission. The person being towed walks (or swims) away from the winch, while extending the rope. When the winch is engaged, it pulls

696-484: The storage area on the seventh floor into a new gallery space for the museum. Other exhibits that have hung in the space include works of Andy Warhol. In May 2010, burglars attempted to steal a safe from the Sixth Floor Museum, but fled when "they were confronted by a security guard," leaving the unopened safe suspended from a winch on the back of a truck. Houston Street (Dallas) Houston Street

725-473: The tail line. The winch takes the load once the pull is stopped with little operator tension needed to hold it. These also allow controlled release of the tension by the operator using the friction of the line around the ratcheted spool. They are used on small sailing boats and dinghies to control sheets and other lines, and in larger applications to supplement and relieve tension on the primary winches. An air winch, sometimes known as an air hoist or air tugger,

754-495: The target tug aircraft for practice, and winched in for take-off and landing. Before advances were made in antennas in the 1950s, radio aerials were quite long, and needed to be winched out for use, and winched back in for landing. Failure to do so would then damage the aerial, as happened to Amelia Earhart on one of the legs of her last flight. Winches are frequently used as elements of backstage mechanics to move scenery in large theatrical productions. They are often embedded in

783-444: The upper floors had sustained oil damage from items stored there by the previous tenant, so they began to cover the floors with plywood to protect their books, stored in cardboard boxes, from the oil. Work had begun on the west side of the sixth floor just before President Kennedy's motorcade, "leaving the whole scene in disarray, with stock shifted as far as the east wall, and stacks in between piled unusually high." Lee Harvey Oswald

812-432: Was refurbished, and partitions, carpeting, air conditioning, and a new passenger elevator were added on the first four floors. In 1963, the building was in use as a multi-floor warehouse storing school textbooks and other related materials, and an order-fulfillment center by the privately owned Texas School Book Depository Company, which had moved from the first floor of the adjacent Dal-Tex Building . The company found that

841-486: Was working as a temporary employee at the building. He fired three shots from a sixth floor window at the presidential motorcade on November 22, 1963. At this time, the building had three elevators. The Texas School Book Depository Company maintained a second warehouse at 1917 Houston, several blocks north of the main building. The short four-story structure was well removed from the parade route, half-hidden on an unpaved section of Houston. Oswald's supervisor Roy Truly told

#139860