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Rack Railways In Italy
Rack or racks may refer to: Storage, support and transportation * Amp rack, a piece of furniture in which amplifiers are mounted * Autorack or auto carrier, for transporting vehicles in freight trains * Baker's rack, for bread and other baked goods * Bicycle rack: ** Bicycle parking rack ** Bicycle stand, for holding bicycles in service, storage, or transport ** The luggage carrier of a bicycle * Bustle rack, a type of storage bin mounted on armored fighting vehicles * Clothes rack, or clothes horse * hatstand, also known as a coat rack, hall rack, or hat rack * Drum rack, part of a drum kit * Drying rack, for clothing * Ejector rack or hardpoint for attaching external loads to an aircraft * Firearm rack * Flat rack container, a type of railroad freight car * Hay rack, for feeding animals * Laboratory drying rack, a for hanging and draining glassware * Music rack or music stand, to hold sheet music for performance * Newspaper rack, a newspaper vending machine * Pallet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amp Rack
A 19-inch rack is a standardized frame or enclosure for mounting multiple electronic equipment modules. Each module has a front panel that is wide. The 19 inch dimension includes the edges or ''ears'' that protrude from each side of the equipment, allowing the module to be fastened to the rack frame with screws or bolts. Common uses include computer servers, telecommunications equipment and networking hardware, audiovisual production gear, professional audio equipment, and scientific equipment. Overview and history Equipment designed to be placed in a rack is typically described as rack-mount, rack-mount instrument, a rack-mounted system, a rack-mount chassis, subrack, rack cabinet, rack-mountable, or occasionally simply shelf. The height of the electronic modules is also standardized as multiples of or one rack unit or U (less commonly RU). The industry-standard rack cabinet is 42U tall; however, many data centers have racks taller than this. The term relay rack app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newspaper Vending Machine
A newspaper vending machine or newspaper rack is a vending machine designed to distribute newspapers. Newspaper vending machines are used worldwide, and they are often one of the main distribution methods for newspaper publishers. According to the News Media Alliance, Newspaper Association of America, in recent times in the United States, circulation via newspaper vending machines has dropped significantly: in 1996, around 46% of single-sale newspapers were sold in newspaper boxes, and in 2014, only 20% of newspapers were sold in the boxes. History The coin operated newspaper vending machine was invented in 1947 by inventor George Thiemeyer Hemmeter. Hemmeter's company, the Serven Vendor Company, was based in Berkeley, California, and had been making rural mail tubes and honor racks. The new invention could be adjusted to accept coins of different denominations (depending on the cost of the paper sold). The newspaper rack was able to be used with one hand, and took around 30 sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linear-motion Bearing
A linear-motion bearing or linear slide is a bearing designed to provide free motion in one direction. There are many different types of linear motion bearings. Motorized linear slides such as machine slides, X-Y tables, roller tables and some dovetail slides are bearings moved by drive mechanisms. Not all linear slides are motorized, and non-motorized dovetail slides, ball bearing slides and roller slides provide low-friction linear movement for equipment powered by inertia or by hand. All linear slides provide linear motion based on bearings, whether they are ball bearings, dovetail bearings, linear roller bearings, magnetic or fluid bearings. X-Y tables, linear stages, machine slides and other advanced slides use linear motion bearings to provide movement along both X and Y multiple axis. Rolling-element bearing A rolling-element bearing is generally composed of a sleeve-like outer ring and several rows of balls retained by cages. The cages were originally machined fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rack Railway
A rack railway (also rack-and-pinion railway, cog railway, or cogwheel railway) is a steep grade railway with a toothed rack rail, usually between the running rails. The trains are fitted with one or more cog wheels or pinions that mesh with this rack rail. This allows the trains to operate on steep gradients of 100% (45 degrees) or more, well above the 10% maximum for friction-based rail. The rack and pinion mechanism also provides more controlled braking and reduces the effects of snow or ice on the rails. Most rack railways are mountain railways, although a few are transit railways or tramways built to overcome a steep gradient in an urban environment. The first cog railway was the Middleton Railway between Middleton and Leeds in West Yorkshire, England, United Kingdom, where the first commercially successful steam locomotive, ''Salamanca'', ran in 1812. This used a rack and pinion system designed and patented in 1811 by John Blenkinsop. The first mountain cog railw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rack Lift
An elevator (American English) or lift (Commonwealth English) is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist, although some pump hydraulic fluid to raise a cylindrical piston like a jack. Elevators are used in agriculture and manufacturing to lift materials. There are various types, like chain and bucket elevators, grain augers, and hay elevators. Modern buildings often have elevators to ensure accessibility, especially where ramps aren't feasible. High-speed elevators are common in skyscrapers. Some elevators can even move horizontally. History Pre-industrial era The earliest known reference to an elevator is in the works of the Roman architect Vitruvius, who reported that Archimedes ( – ) built his first elevator probably in 236 BC. Sources from later periods mention elevators as cabs on a hemp rope, powered by people or an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rack And Pinion
rack and pinion is a type of linear actuator that comprises a circular gear (the '' pinion'') engaging a linear gear (the ''rack''). Together, they convert between rotational motion and linear motion: rotating the pinion causes the rack to be driven in a line. Conversely, moving the rack linearly will cause the pinion to rotate. The rack and pinion mechanism is used in rack railways, where the pinion mounted on a locomotive or a railroad car engages a rack usually placed between the rails, and helps to move the train up a steep gradient. It is also used in arbor presses and drill presses, where the pinion is connected to a lever and displaces a vertical rack (the ram). In pipelines and other industrial piping systems, a rack displaced by a linear actuator turns a pinion to open or close a valve. Stairlifts, lock gates, electric gates, and the mechanical steering mechanism of cars are other notable applications. The term "rack and pinion" may be used also when the rac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Rack
A power rack (also known as a power cage, squat cage or squat rack) is a piece of weight training equipment that functions as a mechanical spotter for free weight barbell exercises without the movement restrictions imposed by equipment such as the Smith machine. Its general design is four upright posts with two adjustable horizontal bar catches (also called "supports," "rails" or "pins") on each side. Many power racks also have accessory attachments, such as a chin-up bar, pulldown cable attachment, or pegs for storing weight plates. Overview The power rack serves several purposes. Best among them is safety: for instance, in the bench press, placing the bar catches, also known as spotter arms, right above the lifter's chest will prevent the barbell from crushing the athlete in the case of muscular fatigue or other loss of control of the bar. In the case of squats, catches placed just below the lowest position of the squat allow the lifter to "dump" the weight safely. The powe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truck Bed Rack
A bed rack is usually a set of steel or aluminum bars secured to the body of a Pickup truck#Pickup bed styles, truck bed. Due to the tall tubes, aka legs, the bed rack is usually higher than the bed itself so that it does not limit inner bed cargo space. Such construction allows it to increase the load and storage capacity of the truck. Usually, a bed rack is used to transport different cargo types, such as baggage, kayaks, Bicycle, bikes, tools, surfboards, snowboards, tourist gear, and so on. The accessory's primary use lies in the fact that it does not limit interior storage. At the same time, it allows the vehicle to transport an object that potentially is bigger than its trunk. History Even though bed racks have gained great popularity over the last decade, the first bed rack was introduced in the 1960s by Pierce Metal Products Inc. Its primary purpose was defined as to build the sides of the carrying box of the truck adjustable to the side of the cargo and to the type of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19-inch Rack
A 19-inch rack is a standardized frame or enclosure for mounting multiple electronic equipment modules. Each module has a front panel that is wide. The 19 inch dimension includes the edges or ''ears'' that protrude from each side of the equipment, allowing the module to be fastened to the rack frame with screws or bolts. Common uses include computer servers, telecommunications equipment and networking hardware, audiovisual production gear, professional audio equipment, and scientific equipment. Overview and history Equipment designed to be placed in a rack is typically described as rack-mount, rack-mount instrument, a rack-mounted system, a rack-mount chassis, subrack, rack cabinet, rack-mountable, or occasionally simply shelf. The height of the electronic modules is also standardized as multiples of or one rack unit or U (less commonly RU). The industry-standard rack cabinet is 42U tall; however, many data centers have racks taller than this. The term relay rack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pipe Rack
Structural steel pipe racks typically support pipes, power cables and instrument cable trays in petrochemical, chemical and power plants. Occasionally, pipe racks may also support mechanical equipment, vessels and valve access platforms. Main pipe racks generally transfer material between equipment and storage or utility areas. Storage racks found in warehouses are not pipe racks, even if they store lengths of pipe.Drake, Richard M., P.E., S.E., SECB and Walter, Robert J., P.E., S.E. A pipe rack is the main artery of a process unit. Pipe racks carry process and utility piping and may also include instrument and cable trays as well as equipment mounted over all of these. Pipe racks consist of a series of transverse beams that run along the length of the pipe system, spaced at uniform intervals typically around 20 ft. To allow maintenance access under the pipe rack, the transverse beams are typically moment frames. Transverse beams are typically connected with longitudinal str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spinner Rack
A spinner rack is a rotating merchandise display, usually placed on a retailer's floor or counter. Often used to display magazines, paperbacks, greeting cards, postcards, hats, or seeds, the spinner rack is closely associated with the comic book industry. A typical spinner rack is composed of a metal central spine with wire pockets, baskets, or pegs. A floor unit may have between four and twelve tiers (usually with four pockets on each tier) that may or may not rotate independently. Additional features may include a signholder that sits on top of the unit. (A typical comics spinner rack would have 44 pockets, with each pocket holding around five comics.) Author George R. R. Martin, in writing about the spinner racks he knew as a child, notes that they offered a hodge-podge of titles (in his case paperbacks) regardless of genre, and thus exposed readers to a wide variety of writing, as opposed to the modern bookstore, where books are generally categorized by topic.Martin, Georg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shoe Rack
A shoe rack is a piece of furniture which is often found by the door mat in the entryway of houses, and serves to keep shoes A shoe is an item of footwear intended to protect and comfort the human foot. Though the human foot can adapt to varied terrains and climate conditions, it is vulnerable, and shoes provide protection. Form was originally tied to function, but ... organized. Often it is placed near a hat shelf, wardrobe rail, or coat rack where clothes for outdoor use can be hung. Some shoe racks also serve as a benches where persons may sit while taking on their shoes. See also * Shoe hanger References Cabinets (furniture) Furniture Shoes {{Clothing-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
