Munitions manufacture in Germany. Guide rings are formed and fastened into grooves around munitions casing. Casings are stood on their bases in molds. Molten metal is poured into the molds. Casings with molded metal on bases are removed and placed into lathe where guide rings are machined. Metal chips fly off the lathe during this process. The guide rings are further machined with rotary milling machine. A woman grinds casing surfaces in a machine. Casings are given water pressure checks. Water spouts from a defective casing. Munition casings are cleaned and packed.
Women perform final calibration and hand finishing of munitions casings. Army representatives perform inspections. A woman reams final holes for detonators (fuzes) in casing noses. Munitions are measured and passed through final set of acceptance guages, including a barrel gauge. Women stamp dates and other information on the casings with hammers and dies. The Casings are then rolled across a paint printer and moved by conveyor to shipping area.
Munitions manufacture in Germany. Steel workers use chain hoists to move a 1650 kg steel ingot into a furnace. Another ingot, weighing 6000 kg is taken from the furnace and placed under a drop forge. Men maneuver the ingot as it is being hammered. it gradually reduces in circumference and increases in length. The useless end is cut off by placing a steel cutter under the forge hammer. The forged piece is conveyed to the next stage of manufacture.
Munitions manufacture in Germany during World War I. A 6000 kg steel ingot is maneuvered with chain hoists and shaped under a 200 ton press. Surface scale is removed and size roughly checked with large calipers.
Gun barrel manufacture at munitions plant in Germany during World War I. Solid cylinder of steel is bored, and center core manually removed by men using sledge hammers and wedges. Weight of the barrel is 470 kg and the core weight is 240 kg. Rifling is then machined into the barrel by a milling machine that drives a milling plunger into the barrel. View of the rifled barrel.
Manufacture gun barrels in Bethlehem Steel company plant, Bethlehem, Pennsylvania, during World War I. A large steel ingot being machined on a milling machine. A huge cylinder of steel being turned on a lathe. Continuous heavy chip being removed by tool bit with lathe operating under relatively low speed and high depth of cut. Gun barrels being bored in a machine shop.
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