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The earliest rail chairs, made of cast iron and introduced around 1800, were used to fix and support cast-iron rails at their ends; [2] they were also used to join adjacent rails. [ 35 ] In the 1830s rolled T-shaped (or single-flanged T parallel rail ) and I-shaped (or double-flanged T parallel or bullhead ) rails were introduced; both required ...
A rail system mounted on top of a SIG SG 550 A dovetail rail on a rifle receiver for mounting a sight. A rail integration system (RIS; also called a rail accessory system (RAS), rail interface system, rail system, mount, base, gun rail, or simply a rail [1]) is a generic term for any standardized attachment system for mounting firearm accessories via bar-like straight brackets (i.e. "rails ...
The Tomlinson coupler is the most widely used fully automatic heavy rail coupling in North America having been adopted by the Washington Metro, Massachusetts Bay Transportation Authority, PATCO Speedline, SEPTA Broad Street Subway, Los Angeles Metro Rail, Baltimore Metro, Miami Metro, MARTA Rail and the New York City Subway for its R44/R46 ...
A railway track (CwthE and UIC terminology) or railroad track (NAmE), also known as permanent way (CwthE) [1] or "P Way" (BrE [2] and Indian English), is the structure on a railway or railroad consisting of the rails, fasteners, sleepers (railroad ties in American English) and ballast (or slab track), plus the underlying subgrade.
Arris CM8200(B) DOCSIS 3.0: 0: 2: Cable modem: Only one UNI-D port (UNI-D 1) is supported for use. Fixed wireless: Alcatel-Lucent: LTE: 0: 4: NBN connection box or indoor unit (IDU) or 4G modem: Where a plain old telephone service (POTS) is in place, this can be kept Satellite: ViaSAT Residential Broadband Terminal 1240: 0: 4: Indoor unit (IDU)
Convex and flat buffer plates are easily recognizable on this Class E 18 Short buffers on a Panama canal mule. In many cases, the buffer on the left-hand side in the direction of travel was designed with a flat plate, and the one on the right with a curved plate, so that a flat plate and a curved plate always meet, thereby avoiding edge pressure.
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As 19-inch equipment has a maximum width of 17 + 1 ⁄ 4 inches (438.15 mm), they can easily be mounted in an ETSI rack by means of an ETSI bracket or adapter plate. In contrast to the 19-inch standards, ETSI also defined the size of the rack enclosure: the four allowed widths are 150, 300, 600, 900 millimetres (5.9, 11.8, 23.6, 35.4 in) and ...