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The 1913 rail (MIL-STD-1913 rail) is an American rail integration system designed by Richard Swan [1] that provides a mounting platform for firearm accessories. It forms part of the NATO standard STANAG 2324 rail. It was originally used for mounting of telescopic sights atop the receivers of larger caliber rifles.
Steam locomotives of the Chicago and North Western Railway in the roundhouse at the Chicago, Illinois rail yards, 1942. The Timeline of U.S. Railway History depends upon the definition of a railway, as follows: A means of conveyance of passengers and goods on wheeled vehicles running on rails, also known as tracks.
Aerial view of the facility in 1937. The Picatinny Arsenal (/ ˈ p ɪ k ə t ɪ n i / or / ˌ p ɪ k ə ˈ t ɪ n i /) is an American military research and manufacturing facility located on 6,400 acres (2,590 ha) of land in Jefferson and Rockaway Townships in Morris County, New Jersey, United States, encompassing Picatinny Lake and Lake Denmark.
This improved rail design permitted higher train speeds and more reliable operation. Discovery of high-quality iron ores in the mid-19th century, particularly in the Great Lakes region, led to the fabrication of better-quality rails. [101] [102] Steel rails began to replace iron later in the 19th century.
SVG conversion of en:Image:M1913A Rail CrossSection.gif. From US Government publication MIL-STD-1913 Revision 10 July 1999. Georgewilliamherbert 03:39, 22 December 2005 (UTC)
U.S. rail tracks are typically too old to handle the speed of new train technology. The limits of the rails can reduce the effectiveness of the train speeds, sometimes by more than 100 mph.
The Picatinny rail has a similar profile to the Weaver, but the recoil groove width of the Picatinny rail is 0.206 in (5.23 mm) versus 0.180 in (4.57 mm) of the Weaver rail/mount, and by contrast with the Weaver, the spacing of the Picatinny recoil groove centers is consistent, at 0.394 in (10.01 mm). [5]
History of rail transportation in California; John S. Casement; Central Pacific Railroad; List of Union Pacific Railroad civil engineers 1863 to 1869; History of railroads in Colorado; Commercial Historic District (Potlatch, Idaho) Confederate railroads in the American Civil War; Credit Foncier of America; Crédit Mobilier scandal