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Emilio Ghisoni
Emilio Ghisoni (1937 – 28 April 2008) was an Italian inventor and firearm designer, best known for his innovative work with revolvers. Biography Ghisoni was born in Pavia, northern Italy in 1937, and attended university to follow a course in classical studies. His father founded a company, Macchine Termo-Balistiche (Mateba), that manufactured pasta kneading machinery and other food processing equipments. The death of his father, who ran the company, caused Ghisoni to leave school in 1956 to learn the business. He later became a mechanical engineer and a designer of food processing equipment. An avid firearms enthusiast, he had an interest in designing revolvers. His designs came from wanting to improve accuracy in international rapid-fire competitions. He accomplished this by aligning the barrel with the lower chamber of the cylinder instead of the top in order to lower the bore axis and minimize the muzzle rise due to recoil. In the 1970s he designed his first prototype: a revol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pavia, Italy
Pavia (, , , ; la, Ticinum; Medieval Latin: ) is a town and comune of south-western Lombardy in northern Italy, south of Milan on the lower Ticino river near its confluence with the Po. It has a population of c. 73,086. The city was the capital of the Ostrogothic Kingdom from 540 to 553, of the Kingdom of the Lombards from 572 to 774, of the Kingdom of Italy from 774 to 1024 and seat of the Visconti court from 1365 to 1413. Pavia is the capital of the fertile province of Pavia, which is known for a variety of agricultural products, including wine, rice, cereals, and dairy products. Although there are a number of industries located in the suburbs, these tend not to disturb the peaceful atmosphere of the town. It is home to the ancient University of Pavia (founded in 1361 and recognized in 2022 by the Times Higher Education among the top 10 in Italy and among the 300 best in the world), which together with the IUSS (Institute for Advanced Studies of Pavia), Ghislieri College, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bore Axis
The bore axis of a firearm is the longitudinal axis through the geometric center of the gun barrel. In a rifled barrel, the projectile (bullet/ball, pellet or slug) will spin around the bore axis as it goes through the barrel. Boresighting is a process of placing one's line of sight down along the bore axis. Bore-to-sight distance The distance between the bore axis and the sight axis (the optical axis of a sighting device), also known as the ''sight height'', is an important factor to consider due to parallax principles. It is normally desirable to keep the sights of a firearm as close to the bore as possible, since a firearm with a large bore-to-sight distance will require more compensatory sight adjustment when shifting between shooting at different targets at close ranges (due to foreshortening). On the other hand, a firearm with a short bore-to-sight distance will need less sight adjustment when changing between targets at close ranges. At longer ranges the bore-to-sigh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firearm Designers
A firearm is any type of gun designed to be readily carried and used by an individual. The term is legally defined further in different countries (see Legal definitions). The first firearms originated in 10th-century China, when bamboo tubes containing gunpowder and pellet projectiles were mounted on spears to make the portable fire lance, operable by a single person, which was later used effectively as a shock weapon in the Siege of De'an in 1132. In the 13th century, fire lance barrels were replaced with metal tubes and transformed into the metal-barreled hand cannon. The technology gradually spread throughout Eurasia during the 14th century. Older firearms typically used black powder as a propellant, but modern firearms use smokeless powder or other propellants. Most modern firearms (with the notable exception of smoothbore shotguns) have rifled barrels to impart spin to the projectile for improved flight stability. Modern firearms can be described by their calibe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bone Tumor
A bone tumor is an abnormal growth of tissue in bone, traditionally classified as noncancerous (benign) or cancerous (malignant). Cancerous bone tumors usually originate from a cancer in another part of the body such as from lung, breast, thyroid, kidney and prostate. There may be a lump, pain, or neurological signs from pressure. A bone tumor might present with a pathologic fracture. Other symptoms may include fatigue, fever, weight loss, anemia and nausea. Sometimes there are no symptoms and the tumour is found when investigating another problem. Diagnosis is generally by X-ray and other radiological tests such as CT scan, MRI, PET scan and bone scintigraphy. Blood tests might include a complete blood count, inflammatory markers, serum electrophoresis, PSA, kidney function and liver function. Urine may be tested for Bence Jones protein. For confirmation of diagnosis, a biopsy for histological evaluation might be required. The most common bone tumor is a non-oss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiappa Rhino
The Chiappa Rhino is a revolver produced by Italian manufacturer Chiappa Firearms. The Rhino's frame is CNC-machined from a solid block of high-tensile aluminium alloy and all internal parts are CNC-machined from steel. Chambered for the .357 Magnum/.38 Special, 9mm Parabellum, .40 S&W, or 9×21mm cartridges, its most distinctive feature is that the barrel is on a much lower bore axis, as the Rhino fires from the lowermost chamber of the cylinder rather than from the topmost chamber in conventional revolvers. Design details Designed by Emilio Ghisoni and Antonio Cudazzo, the Rhino differs from traditional revolvers in a number of ways. Stylistically it resembles Ghisoni's earlier design, the Mateba Autorevolver, and was his last design before his death in 2008. In order to reduce weight, the frame of the Rhino is made of Ergal (an aluminium alloy), and the receiver is CNC-machined from a solid block of high-tensile aluminium. Virtually all components are CNC-machined a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mateba Autorevolver
The Mateba Model 6 Unica (often known simply as the Mateba or the Mateba Autorevolver) is a recoil operated semi-automatic revolver, one of only a few of this type ever produced. It was developed by Mateba, based in Pavia, Italy. Inventor Emilio Ghisoni (1937–2008), who was also famous for later designing the Chiappa Rhino, is listed as the owner of which details the operation of the weapon. International produced and manufactured. Design The Mateba Model 6 uses the recoil from firing to rotate the cylinder and cock the hammer, unlike conventional revolvers, which depend on the user physically pulling the trigger and/or cocking the hammer to actuate the weapon's mechanism of operation. The Mateba Autorevolver's barrel alignment is different from most other revolvers. The barrel is aligned with the bottom of the cylinder instead of the top. This lowers the bore axis (line of the barrel) which directs the recoil in line with the shooter's hand thereby reducing the twisti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semi-automatic Pistol
A semi-automatic pistol is a type of repeating single- chamber handgun ( pistol) that automatically cycles its action to insert the subsequent cartridge into the chamber (self-loading), but requires manual actuation of the trigger to actually discharge the following shot. As a result, only one round of ammunition is fired each time the trigger is pulled, as the pistol's fire control group disconnects the trigger mechanism from the firing pin/striker until the trigger has been released and reset. Additional terms sometimes used as synonyms for a semi-automatic pistol are self-loading pistol, autopistol, autoloading pistol, and automatic pistol (E.G.: Automatic Colt Pistol). A semi-automatic pistol recycles part of the energy released by the propellant combustion to move its bolt, which is usually housed inside the slide. After a round of ammunition is fired, the spent cartridge casing is extracted and ejected as the slide/bolt moves rearwards under recoil, the ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
22 LR
The .22 Long Rifle or simply .22 LR or 22 (metric designation: 5.6×15mmR) is a long-established variety of .22 caliber rimfire ammunition originating from the United States. It is used in a wide range of rifles, pistols, revolvers, smoothbore shotguns, and submachine guns. In terms of units sold it is by far the most common ammunition in the world today. Common uses include hunting and shooting sports. Ammunition produced in .22 Long Rifle is effective at short ranges, has little recoil, and is cheap to purchase, making it ideal for training. History American firearms manufacturer J. Stevens Arms & Tool Company introduced the .22 Long Rifle cartridge in 1887. The round owes its origin to the .22 BB Cap of 1845 and the .22 Short of 1857. It combined the case of the .22 Long of 1871 with a bullet, giving it a longer overall length, a higher muzzle velocity and superior performance as a hunting and target round, rendering the .22 Extra Long cartridges obsolete. The .22 LR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trigger Guard
A trigger guard is a protective loop surrounding the trigger of a firearm designed to prevent unwanted contact with the trigger, which may cause an accidental discharge. Other devices that use a trigger-like actuator mechanism, such as inhalers, crossbow A crossbow is a ranged weapon using an elastic launching device consisting of a bow-like assembly called a ''prod'', mounted horizontally on a main frame called a ''tiller'', which is hand-held in a similar fashion to the stock of a long fir ...s and power tools, may also have trigger guards. On rifles with a bottom metal, the trigger guard is often incorporated as part of the bottom metal. Winter trigger guards Some firearms may have their trigger guard removed or repositioned as not to impair use with large cold weather gloves on, especially those intended to be used in arctic conditions. Quite notably, the Accuracy International Arctic Warfare line of rifles have enlarged trigger guards for use in cold climate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recoil
Recoil (often called knockback, kickback or simply kick) is the rearward thrust generated when a gun is being discharged. In technical terms, the recoil is a result of conservation of momentum, as according to Newton's third law the force required to accelerate something will evoke an equal but opposite reactional force, which means the forward momentum gained by the projectile and exhaust gases ( ejectae) will be mathematically balanced out by an equal and opposite momentum exerted back upon the gun. In hand-held small arms, the recoil momentum will be eventually transferred to the ground, but will do so through the body of the shooter hence resulting in a noticeable impulse commonly referred to as a "kick". In heavier mounted guns, such as heavy machine guns or artillery pieces, recoil momentum is transferred to the Earth's surface through the platform on which the weapon is mounted. In order to bring the rearward moving gun to a halt, the momentum acquired by t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muzzle Rise
Muzzle rise, muzzle flip or muzzle climb refers to the tendency of a firearm's or airgun's muzzle (front end of the barrel) to rise up after firing. It more specifically refers to the seemingly unpredictable "jump" of the firearm's muzzle, caused by combined recoil from multiple shots being fired in quick succession. It has an adverse effect on maintaining accuracy with using automatic weapons or rapid-firing semi-automatic firearms, as a moving muzzle can throw off the shooter's aim, causing subsequent shots to miss the intended target. Reason The primary reason for muzzle rise is that for nearly all guns, the bore axis (longitudinal centerline of the barrel) is above the gun's center of mass, while the contact points between the shooter and the gun (e.g. grips and stock) are often all below the center of mass. When the gun is fired, the bullet motion and the escaping propellant gases exert a reactional recoil directly backwards along the bore axis, while the countering f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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