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A guide rail is a device or mechanism to direct products, vehicles or other objects through a channel, conveyor, roadway or rail system. Several types of guide rails exist and may be associated with: Factory or production line conveyors; Power tools, such as table saws; Elevator or lift shafts
A recess or groove cut parallel to, and at the edge of, a board. rail A horizontal member of a frame on a door, window or panel. Contrast stile. rail and stile See frame and panel. rasp A long and flat steel tool with raised teeth for shaping wood. reed A series of beads arranged in a row. relief cut
L-square is a generic term used for L-shaped squares, including framing squares, engineer's squares, and try squares. The shorter edge usually being the stock, and the longer edge the blade. Melencolia try square An historic style of woodworking square, in which the width of the blade matches the length of the stock.
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 most common use of the term "track gauge" refers to the transverse distance between the inside surfaces of the two load-bearing rails of a railway track, usually measured at 12.7 millimetres (0.50 inches) to 15.9 millimetres (0.63 inches) below the top of the rail head in order to clear worn corners and allow for rail heads having sloping ...
Guard rails at Diêu Trì railway station, Vietnam This curved track in Myanmar, near Pekon, includes a guard rail on the inside rail of the curve. In rail transport, guard rails or check rails are rails used in the construction of the track, placed parallel to regular running rail to keep the wheels of rolling stock in alignment to prevent derailment.
In a frog gauntlet, one rail crosses over a rail on the adjacent track. A frog is used to provide the flangeway for the crossing tracks. The train taking the gauntlet runs over the frog onto the parallel rails, passes through the gauntlet area, and passes over another frog to return to the original line.
Cast iron edge rails were used by Thomas Dadford Jr. when building the Beaufort and Blaenavon lines to the Monmouthshire canal in 1793. These were rectangular, 2.5 inches (64 mm) in width with a depth of 3 inches (76 mm) and 4 feet (1.2 m) in length, and required flanges on the wagon wheels.