Model of a 20-cm Shell Gun on Slide and Pivot, Model of a 20-inch grenade cannon with rigging on a turning carriage on a floorboard. The barrel, 57.1 cm long and with a caliber of 40 mm, has a refraction ring with a loose cap, a visor with an attachment rod at the rear, a visor at the height of the taps and a percussion lock that hits at an angle, the grape is flat. The upper chaff, narrower at the front than at the rear, consists of two cheeks with two staircases connected by a sloping calf and the ashes, the elevation screw is in the rear axle body. Metal axles run through the axle webs, where the double wheels are fitted at the ends. The wheels only serve to transport the carriage next to the carriage, but can also be mounted under the carriage. The upper chaff with the ashes stands on the supports of the carriage. At the back two small wheels are fitted, which can lift the back of the spout like a jack, so that the front also rests on two small wheels and is easy to get on board. The upper chaff is coupled to the carriage with a braking mechanism consisting of a clamping device. The carriage is a wooden framework, the shelves of which are covered with brass, the rear pivot is placed slightly forward, to reduce the turning circle. The crossbars are covered with brass at the bottom to facilitate their movement on the turning circles in the deck. Scale 1: 5 (derived)., anonymous, Netherlands, c. 1854, wood (plant material), brass (alloy), iron (metal), rope, h 32 cm × w 94 cm × d 37 cm

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