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  2. Bicycle handlebar - Wikipedia

    en.wikipedia.org/wiki/Bicycle_handlebar

    Drop handlebars (of the "ergo" or "anatomic" variety) Porteur type bicycle handlebar, from an Italian Bianchi bicycle, circa 1940 A bicycle handlebar [ 1 ] is the steering control for bicycles . It is the equivalent of a tiller for vehicles and vessels, as it is most often directly mechanically linked to a pivoting front wheel via a stem which ...

  3. Villar Perosa aircraft submachine gun - Wikipedia

    en.wikipedia.org/wiki/Villar_Perosa_aircraft...

    All weapons of the Villar Perosa family, including the O.V.P. submachine gun and Revelli-Beretta carbine, were originally intended to fire a variant of the 9mm Glisenti cartridge, known as Glisenti M.915 "Per Mitragliatrici" ("For Machine-Guns"). This was a higher-velocity version of the standard Glisenti cartridge with an over-powder wad ...

  4. Bottle cage - Wikipedia

    en.wikipedia.org/wiki/Bottle_cage

    Composed of plastic, aluminum, stainless steel, titanium or carbon fiber, it is attached to the main frame of a bicycle, the handlebars, behind the saddle, or, in uncommon cases, the fork. Most modern bicycles have threaded holes in the frame to hold the bottle cage, often called braze-ons even though they may be welded , glued , riveted , or ...

  5. Derailleur - Wikipedia

    en.wikipedia.org/wiki/Derailleur

    One example is the Protean two-speed derailleur available on the Whippet safety bicycle. [4] The French bicycle tourist, writer and cycling promoter Paul de Vivie (1853–1930), who wrote under the name Vélocio, invented a two speed rear derailleur in 1905 which he used on forays into the Alps. [5]

  6. Stem (bicycle part) - Wikipedia

    en.wikipedia.org/wiki/Stem_(bicycle_part)

    Both quill and threadless stems come in a variety of bicycle handlebar clamp diameters. The ISO standard for the clamping area of a handlebar is 25.4 mm (1 inch), which is used on mountain bikes and many Japanese-made road handlebars. However, the Italian unofficial standard is 26.0 mm, which is the most common clamp size for road bars.

  7. Weapon mount - Wikipedia

    en.wikipedia.org/wiki/Weapon_mount

    Casemate-mounted 5"/50 caliber gun on the USS North Dakota. A casemate is an armoured structure consisting of a static primary surface incorporating a limited-traverse gun mount: typically, this takes the form of either a gun mounted through a fixed armour plate (typically seen on tank destroyers and assault guns) or a mount consisting of a partial cylinder of armour "sandwiched" between ...

  8. Quackenbush rifle - Wikipedia

    en.wikipedia.org/wiki/Quackenbush_rifle

    The "bicycle rifle" had a leather or canvas case by which it was able to be attached in three places on a bicycle. [2] The stock were removed by pulling down on a loop spring. [3] The "Safety" rifle was able to fire BB's, short, long, and long rifle projectiles. [2] The barrel was made from nickel or gun blued steel. [2] Quackenbush made gun ...

  9. Bicycle infantry - Wikipedia

    en.wikipedia.org/wiki/Bicycle_infantry

    Bicycle infantry are infantry soldiers who maneuver on (or, more often, between) battlefields using military bicycles. The term dates from the late 19th century, when the "safety bicycle" became popular in Europe, the United States, and Australia. Historically, bicycles lessened the need for horses, fuel and vehicle maintenance.