touch hole การใช้

• An iridium platinum alloy was used for the touch holes or vent pieces of cannon.
• The chief gunner would then pin the cartridge through the touch hole and pour priming powder.
• The lock would be primed, cocked, and fired at each touch hole to discharge successive charges.
• The gunpowder chamber has a touch hole, a small hole for the fuse that ignites the gunpowder.
• Because of this, " double firing " was tried where the gunner lit the fuse and then the touch hole.
• The wad of the mine was made of hard wood, carrying three different fuses in case of defective connection to the touch hole.
• To combat rust when ships were not in action the barrels were sealed, both with a tampion and plugs in the touch hole.
• Flintlocks using superposed charges often involved a sliding lock, that slid along the barrel and locked in place at each successive touch hole.
• Maori were not beyond customising their muskets; for example, some enlarged the touch holes which, while reducing muzzle velocity, increased rate of fire.
• Small guns were fired by priming powder poured down the touch hole ( or vent ) and ignited by glowing embers or a red-hot iron rod.
• Because of this danger, " double firing " was developed, where the fuse was turned up and the gunner lighted the fuse and the touch hole simultaneously.
• Later hand cannons were made with a flash pan attached to the barrel and a touch hole drilled through the side wall of the gun instead of the top of the barrel.
• A pull-type friction primer, 0.88 inch in length, equipped with a loop lanyard, is designed to fit into the primer seat, or touch hole.
• These have progressed over time from touch hole, to flintlock, matchlock, wheellock, cap lock, metallic cartridge primer, compressed air, and electric methods of detonating the powder charge.
• Prior to the appearance of the matchlock, handguns were fired from the chest, tucked under one arm, while the other arm maneuvered a hot pricker to the touch hole to ignite the gunpowder.
• Early arquebusiers just held on to the rope match, or attached it to their belt, which was dangerous since the match could accidentally contact the touch hole as the arquebusier moved around while loading the weapon in battle.
• The earlier method of firing a cannon was to apply a linstock-a wooden staff holding a length of smoldering match at the end-to the touch hole of the gun, that was filled with loose priming powder.
• Originally, a small hole ( a touch hole ) was drilled into the breech so that a fine propellant ( often the same propellant used in the gun ) could be poured in, and an external flame was applied.
• Later the Gunner's Stiletto became a tool for clearing cannon-fuse touch holes; used in the manner of an automotive oil dipstick, they were often inscribed with marks indicating levels of powder charges for ranging distance.
• Four of the gun's 25 barrels burst when fired, four others did not fire, and a further one was not loaded as it lacked a touch hole . and two of his fingers later had to be amputated.