Factory and industrial management . mer type of press was madeexclusively for the firm byHaniel & Luig of Diisseldorfand is highly prized, for itsJ handiness. It bends the whole§ contour of the plate to beflanged at one pressure, andg to the required size, by theI use of suitable dies and tem-H plates. The plate to flange is§ placed on the lower convexw die and the upper concave die^ is then lowered so far that the^ concave die rests on the plate^ under a pressure of 700I pounds per square inch. TheS piston rod of the steam pres-sure transmitter then enters> into the cylinder of the hy-u dr
Factory and industrial management . mer type of press was madeexclusively for the firm byHaniel & Luig of Diisseldorfand is highly prized, for itsJ handiness. It bends the whole§ contour of the plate to beflanged at one pressure, andg to the required size, by theI use of suitable dies and tem-H plates. The plate to flange is§ placed on the lower convexw die and the upper concave die^ is then lowered so far that the^ concave die rests on the plate^ under a pressure of 700I pounds per square inch. TheS piston rod of the steam pres-sure transmitter then enters> into the cylinder of the hy-u draulic ram and the pressing< continues under tensions of^ from 4,200 to 7,000 pounds. per square inch. For press-^ ing out the openings for fire-§ holes and other large holes aspecial hydraulic cylinder ismounted on the lower presstable, and operates in ascend-ing. In this space it isscarcely possible to describethe press further. It is madefor pressures of 300 metrictons; has a reach of 4 feet,a single stroke of 4 EUROPEAN LOCOMOTIVE WORK. 719 and total stroke ofabout 2 feet. A forging whichtends to become moreand more intricatewith the introductiono f specially-shapedand wide fireboxes—derived from theWooton and Belpairewide-grate types—isthe mud ring, foun-dation ring, or cadredu has du foyer orquadre fornello. TheParis-Orleans mud-ring (Figure 25) is,except for its shape,a simple piece, onlyhaving the two pro-jections, as visible onthe back end. This pe-culiarly shaped mudring is forged fromiron or extra-mildweld steel, the firsthaving a tensilestrength of 34 kilo-grammes per squaremillimetre with 20per cent a grate of metres itweighs 460 k 1 1 o -grammes. The Ital-ian water-space frames are more difficult—see Figure 40. Here thereare broad splay feet on the back end for bearing on the brackets riv-eted outside of the engine frames, and also large central blocks on backand front ends for maintaining the firebox central with the
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Keywords: ., bookcentury1800, bookdecade1890, booksubj, booksubjectengineering
