United States Naval Institute Proceedings, Томови 3-4U.S. Naval Institute, 1877 |
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Страница 35
... coils . The merit of strengthing guns by hooping , in England , belongs to Captain Blakely , from whom I think that there is little doubt that Armstrong took his first ideas . They had a long controversy over the matter which was never ...
... coils . The merit of strengthing guns by hooping , in England , belongs to Captain Blakely , from whom I think that there is little doubt that Armstrong took his first ideas . They had a long controversy over the matter which was never ...
Страница 36
... coils , the number and size of coils increasing with the caliber . The breech- piece was forged in one , altering the direction of the grain of the iron in order to give greater longitudinal strength . The coils butted against each ...
... coils , the number and size of coils increasing with the caliber . The breech- piece was forged in one , altering the direction of the grain of the iron in order to give greater longitudinal strength . The coils butted against each ...
Страница 48
... coil welding served as a receptacle for cinder and prevented a perfect weld . In order to avoid this the shoulders were added whence a supply of metal could be drawn to fill up the concavity of the sides . 1.L .. The bars are 18 ' long ...
... coil welding served as a receptacle for cinder and prevented a perfect weld . In order to avoid this the shoulders were added whence a supply of metal could be drawn to fill up the concavity of the sides . 1.L .. The bars are 18 ' long ...
Страница 49
... coil welding which takes place on the side of the bar and against the flat of the slabs , they are driven more solidly together . The iron of the bars breaks at a tensile strain of fifty housand pounds per square inch , and presents ...
... coil welding which takes place on the side of the bar and against the flat of the slabs , they are driven more solidly together . The iron of the bars breaks at a tensile strain of fifty housand pounds per square inch , and presents ...
Страница 50
... coil slipped off the smaller end , and landed on end on an iron plate , in order that it may cool without bulging or warping . The coil in this condition is about 50 " or 60 " long and loses about .2 of its length in the subsequent ...
... coil slipped off the smaller end , and landed on end on an iron plate , in order that it may cool without bulging or warping . The coil in this condition is about 50 " or 60 " long and loses about .2 of its length in the subsequent ...
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