Model of the Bed of a 20-cm Sea Service Mortar on a Pivoting Undercarriage, Model of a mortar chair for mortar of 20 inches (cm) on swivel bed. The swivel bed consists of a flat wooden plate with a hole for the spindle bolt in the middle. At the rear is a fixed buffer beam with five removable beams, which serve as a buffer for absorbing the recoil, small spools are arranged between these beams, alternately at the ends or in the middle, through which the beams can spring. The chair consists of two parts placed in the direction of the layers and has taps made entirely of brass, a trough for the mortar in lying position and a removable guide block, which gives the mortar an elevation of 45 °. Scale 1: 5 (scale on model)., Rijkswerf Amsterdam, Amsterdam, 1855, wood (plant material), brass (alloy), h 13 cm × w 38.1 cm × d 25.4 cm × h 22 cm w 50.5 cm × d 31 cm
Keywords:
Model, Bed, 20-cm Sea Service Mortar, Pivoting Undercarriage, mortar chair, mortar, 20 inches, cm, swivel bed, swivel bed consists, flat wooden plate, hole, spindle bolt, middle, rear, fixed buffer beam, five removable beams, serve, buffer, absorbing, recoil, small spools, arranged, beams, alternately, ends, spring, chair consists, two parts placed, direction, layers, taps, entirely, brass, trough, lying position, removable guide block, gives, elevation, 45 °, Scale 1, 5, scale, model, Rijkswerf Amsterdam, Amsterdam, 1855, wood, plant material, alloy
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