Model of the Bed of a 20-cm Sea Service Mortar on a Pivoting Undercarriage, Rijkswerf Amsterdam, 1855 demonstration model Model of a mortar chair for Mortier of 20 inches (cm) on rotary bed. The rotary bed consists of a flat wooden plate with hole for the pivot bolt in the middle. On the back is a fixed bump with five removable beams that serve as a buffer for taking care of the recoil; Small bobbins have been applied between these beams, turns at the ends or in the middle, so that the beams can feathers. The chair consists of two parts -placed parts and has tap cushions entirely of brass, a t

• Contributor: piemags/rmn / Alamy Stock Photo
• Image ID: 2W91KAY
• File size: 76.7 MB (1.3 MB Compressed download)
• Releases: Model - no | Property - no
• Dimensions: 6370 x 4206 px | 53.9 x 35.6 cm | 21.2 x 14 inches | 300dpi

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Model of the Bed of a 20-cm Sea Service Mortar on a Pivoting Undercarriage, Rijkswerf Amsterdam, 1855 demonstration model Model of a mortar chair for Mortier of 20 inches (cm) on rotary bed. The rotary bed consists of a flat wooden plate with hole for the pivot bolt in the middle. On the back is a fixed bump with five removable beams that serve as a buffer for taking care of the recoil; Small bobbins have been applied between these beams, turns at the ends or in the middle, so that the beams can feathers. The chair consists of two parts -placed parts and has tap cushions entirely of brass, a trough for the mortar in lying position and a removable target block, which gives the mortar an elevation of 45 °. Scale 1: 5 (scale on model). Amsterdam wood (plant material). brass (alloy)