 | Magné de Marolles - 1789 - 334 Seiten
...called a mandril, whofe diameter is confiderably lefs than the intended bore of the barrel. The edgesof the plate are made to overlap each .other about half...three inches at a time, and hammering it with very brifk but moderate ftrokes, upon an anvil which has a number of femicircular furrows in it, adapted... | |
 | W. Cleator - 1791 - 382 Seiten
...muzzle, and thicker at that for the breech ; the length, breadth, and thicknefs of the whole plate being regulated by the intended length, diameter,...three inches at a time, and hammering it with very brifk but moderate ftrokes, upon an anvil which has a number of femicircular furrows in it, adapted... | |
 | 1789 - 682 Seiten
...his own words : " To form a barrel in the manner generally praltifed, the workmen begin by beating and hammering out a bar of iron into the form of a...femicircular furrows in it, adapted to the various fizes of barrels. The heat required for welding is the bright white heat which immediately precedes... | |
 | 1800 - 594 Seiten
...intended length, diameter, and weight of the barrel. This oblong plate of metal is then, by repealed heating and hammering, turned round a cylindrical...three inches at a time, and hammering it, with very brifk but moderate ftrokes, upon an anvil which has a number of femicircular furrows in it, adapted... | |
 | 1800 - 596 Seiten
...turned round a cylindrical rod of tempered iron, called a mandril, whofe diameter is confiderably lei's than the intended bore of the barrel. The edges of...three inches at a time, and hammering it, with very brifk but moderate fti'okes, upon an anvil which has a number of femicircular furrows in it, adapted... | |
 | Henry James Pye - 1807 - 608 Seiten
...muzzle, and thicker at that for the breech j the length, breadth, and thicknefs, of the whole plate, being regulated by the intended length, diameter,..."half an inch, and are welded together by heating thetube in lengths of two or three inches at a time, and hammering it, with very brilk but moderate... | |
 | John Mason Good - 1813 - 714 Seiten
...turned round a cylindrical rod of tempered iron, called a mandril, whose diameter is considerably less than the intended bore of the barrel. The edges of...three inches at a time, and hammering it, with very brisk but moderate strokes, upon an anvil which has a number of semicircular furrows in it, adapted... | |
 | Thomas Martin (civil engineer.) - 1813 - 714 Seiten
...turned round a cylindrical rod of tempered iron, called a mandril, whose diameter is considerably less than the intended bore of the barrel. The edges of...the plate are made to overlap each other about half uu inch, and are welded together by heating the tube in lengths of two or three inches at a time, and... | |
 | Thomas Burgeland Johnson - 1814 - 312 Seiten
...turned round a cylindrical rod of tempered iron, called a mandril, whose diameter is considerably less than the .intended bore of the barrel. The edges of...of two or three inches at a time, and hammering it upon an anvil that has a number of semicircular furrows in it, adapted to the various sizes of barrels... | |
 | Thomas Burgeland Johnson - 1816 - 298 Seiten
...round a cylindrical rod of tempered iron, called a mandril, the diameter of which is considerably less than the intended bore of the barrel. The edges of...of two or three inches at a time, and hammering it upon an anvil that has a number of semicircular furrows init, adapted to the various sizes of barrels... | |
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... than the intended bore of the barrel. The edges of the plate are made to overlap each other about half an inch, and are welded together by heating the tube in lengths of two or three inches at a time, and hammering it with very... 
