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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 ...
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.
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.
Harold Johnson necked out the .348 Winchester case to accept a .510" diameter bullet, [2] and Harold Fuller developed the barrel, marrying a .50 caliber barrel to an old Winchester Model 1886 rifle. Harold Johnson made the first 450 Alaskan in 1952, and continued to make them in the 1950s and 60s. The rifle was based on the Winchester Model 71 ...
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.
The .50-140 was created for big game hunting, and was the most powerful of the Sharps Bison cartridges. [5] However, it was introduced about the time of the end of the great Bison herds. [6] An obsolete round, ammunition is not produced by any major manufacturer although reloading components and brass can be acquired or home-built.
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 ]