Farrow's military encyclopedia : a dictionary of military knowledge . ?^ E N .1 Ss) [ \. 3 PALLIBEK PROJECTILES. 473 PALM. to the fltrain it transinits to llic surroiimJini; cast-1iron, wlii<-li sliiill be most suiUtbly pr(i|)i)rti(iiii-il totheir respective elastieitiefl. Tlie |)reeiH(^ proportionH •will (lejiend on various (irciinistunccs, viz: the ex- jcessive expansion of wroufjlit-iron ducr to heat, alsothe t;reater rani^e lietween tlie limits of eUislieily and jrupture of this metal, anil that the eastinm will haveto do nearly all the l(in;;itudinal worU. liy varyingthe thiekniss
Farrow's military encyclopedia : a dictionary of military knowledge . ?^ E N .1 Ss) [ \. 3 PALLIBEK PROJECTILES. 473 PALM. to the fltrain it transinits to llic surroiimJini; cast-1iron, wlii<-li sliiill be most suiUtbly pr(i|)i)rti(iiii-il totheir respective elastieitiefl. Tlie |)reeiH(^ proportionH •will (lejiend on various (irciinistunccs, viz: the ex- jcessive expansion of wroufjlit-iron ducr to heat, alsothe t;reater rani^e lietween tlie limits of eUislieily and jrupture of this metal, anil that the eastinm will haveto do nearly all the l(in;;itudinal worU. liy varyingthe thiekniss of the tube, the transmitted strainsran be ni;ulated with the greatest nieety. The milhod of construction is very simple. Thegun having bei-n bored, a coiled wrought-iron tubeis inserted, as shown in the drawing. The tube con-sists of two thin wrought-iron liarnOs, the outer onebeing much shorter tlian the inner one. and shrunkto it at the breech-cnd. Two are used tor the pur-pose of obtaining the benelit of the tension, and alsoto break the contiauity of any internal fracture. The from
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Keywords: ., bookcentury1800, bookdecade188, booksubjectmilitaryartandscience
