. Abraham Lincoln and the battles of the Civil War . i,)^/* V fk. MAXIM FIELD GUN WITH BULLET-PROOF SHIELD. does another work. Over the casmg is asmall tank of water, and at each discharge ofthe gun a small quantity of cool water is in-jected from the cistern into the water-jacket,and after the heat of the gun has risen suffi-ciently>the water escapes in the form of steamfrom two little apertures at the front end ofthe jacket. The cartridge contains from 70 to90 grains of powder, and the heat evolvedin the discharge of one cartridge is sufficientto raise the temperature of the water at ther
. Abraham Lincoln and the battles of the Civil War . i,)^/* V fk. MAXIM FIELD GUN WITH BULLET-PROOF SHIELD. does another work. Over the casmg is asmall tank of water, and at each discharge ofthe gun a small quantity of cool water is in-jected from the cistern into the water-jacket,and after the heat of the gun has risen suffi-ciently>the water escapes in the form of steamfrom two little apertures at the front end ofthe jacket. The cartridge contains from 70 to90 grains of powder, and the heat evolvedin the discharge of one cartridge is sufficientto raise the temperature of the water at therate of ij^^ Fahrenheit per pound. And asmuch heat is required to melt four pounds ofiron as is necessary to evaporate five pounds ofwater. It can be seen from this what an effect-ual absorbent of heat is the water-jacket, andin fact it requires the discharge of 1000 car-tridges before the water is heated sufficientlyto cause steam to make its appearance. Therate of fire is regulated by means of a quad-rant graduated from 200 up to 700, so that byputting the han
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Keywords: ., bookcentury1900, bookdecade1900, bookidabrah, booksubjectgenerals
