The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . movein a direction and at a speed entirely independent of suchroll. This requires powerful mechanism and interfereswith accurate aim. The elliptical turret, which is twenty-three by thirty feet, rotates about the centre of its weight,instead of its centre of form, so that it can be controlledby a quarter of the power required in the case of a circularturret. What is even better, the accuracy of aim is in-creased, and the target presented by the front to the enemyis reduced seven feet.
The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . movein a direction and at a speed entirely independent of suchroll. This requires powerful mechanism and interfereswith accurate aim. The elliptical turret, which is twenty-three by thirty feet, rotates about the centre of its weight,instead of its centre of form, so that it can be controlledby a quarter of the power required in the case of a circularturret. What is even better, the accuracy of aim is in-creased, and the target presented by the front to the enemyis reduced seven feet. It is also possible to make the frontplate heavier with the same total weight of metal. 110 WONDERS OF MODERN MECHANISM. Armor is made of rolled iron, chilled cast iron, forgedand tempered steel, and nickel-steel. Compound armor ismade of rolled iron and faced with steel. Wroiight-ironarmor has been made under the steam-hammer and byrolling, the latter process being most common. It hasbeen subject to much experimentation. Chilled cast ironhas been largely used in defending European forts. It is Fig. SELLERS H KOLUS FOK KEN1>LN(_ cheaper than hardened steel, and the increased weightnecessary to afford the same protection is an advantagerather than otherwise. Compound plates have been madelargely by the Wilson process. This consists in the cast-ing of Bessemer steel in an iron mould, the back of themould adhering to the cast steel, so that the two becomeone, and are rolled together to complete the welding. Theplate is then bent, shaped, tempered, and annealed to re-
Size: 1941px × 1287px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectmechanicalengi
