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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 ...
The racks each have large heavy-duty rollers. This is typical for relatively impromptu venues such as open-air concerts. 19-inch equipment that needs to be moved often or protected from harsh treatment can be housed in a road case approved by the Air Transport Association of America (ATA), sometimes also referred to as a flight case.
A middle rail at the height of the bolt is known as the "lock rail", other middle rails are commonly known as "cross rails". Mullions – Smaller optional vertical boards that run between two rails, and split the door into two or more columns of panels, the term is used sometimes for verticals in doors, but more often (UK and Australia) it ...
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.
It’s more than twice as heavy as the other canes we evaluated, but at 3.2 pounds, it’s light for a folding chair. The seat adjusts from 19 to 22 inches, and folded as a cane, it adjusts from ...
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 ...