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The United States Patent Office has issued more than 4,400 mousetrap patents. [3] The gun-powered mouse trap proved inferior to spring-powered mousetraps descending from William C. Hooker's 1894 patent. However, the 1882 patent has continued to draw interest–including efforts to reconstruct a version of it–due to its unconventional design. [4]
A .50 caliber cartridge case with the Frankford Arsenal headstamp. Each round of ammunition was marked with the headstamp "F A" on its base, denoting that it was produced at the Frankford Arsenal. Early metallic cartridges produced at Frankford were not head-stamped. These were either Martin or Benet primed copper cases. Early cartridges were ...
Introduced for the Remington Navy single-shot, rolling block pistol in 1865, the low-velocity round loaded a 290 gr (19 g; 0.66 oz) bullet over 23 gr (1.5 g; 0.053 oz) of black powder.
A custom made .50 Alaskan five-shot single-action revolver built on a BFR frame. The cylinder can also accommodate the 0.3 inch longer .50-110 Winchester cartridge. (Left: .50 Alaskan, Right: .50-110 Winchester) The largest commercially produced revolver: Smith & Wesson Performance Center Model 500 built on the company's X-Frame.
The .50-90 Sharps is similar to the .50-100 Sharps and .50-110 Sharps cartridges. All three use the same 2.5-inch (64 mm) case, the latter two being loaded with more grains of black powder. All rifles made for the .50-90 Sharps should be able to use the .50-110 and .50-100 cartridges due to the case dimensions being nearly identical.
The Model 1868 was also the first trapdoor conversion to use the cartridge extractor covered by U.S. Patent No. 68,009, issued August 27, 1867 to W.H. & G.W. Miller. The Model 1868 had an overall length of 51 7 ⁄ 8 inches. [1] Over 50,000 Model 1868 rifles were manufactured, chambered for the .50-70 450 cartridge.
The Maynard carbine was a breech-loaded carbine used by cavalry in the American Civil War.The First Model was manufactured between 1858 and 1859. About 5,000 were made. In United States service it was distributed to the 9th Pennsylvania and 1st Wisconsin cavalry regiments, United States Marines aboard the USS Saratoga and the United States Revenue Cutter Service.
While the .50-caliber was being developed, some 13.2×92mmSR Mauser 1918 T-Gewehr anti-tank rifles and their ammunition were captured. The 13.2 mm German rounds had a muzzle velocity of 2,700 ft/s (820 m/s), an 800 gr (52 g) bullet, and could penetrate armor 1 in (25 mm) thick at a range of 250 yd (230 m). [ 23 ]