Journal . s and incendiary shell, or for man-killing pur-poses with high explosive. The delay fuze does not operateuntil the shell has buried itself, so that a good crater is formedby the explosion. This class is used with high explosive shellfor the destruction of trenches, dugouts, fortifications, etc. There are fuzes with many different operating systems andsafety arrangements, but they all depend upon actions which cantake place at four different periods. Firstly, there is the momentjust before the shell and fuze are loaded into the gun, when thegunner can remove a safety cap or a safety p
Journal . s and incendiary shell, or for man-killing pur-poses with high explosive. The delay fuze does not operateuntil the shell has buried itself, so that a good crater is formedby the explosion. This class is used with high explosive shellfor the destruction of trenches, dugouts, fortifications, etc. There are fuzes with many different operating systems andsafety arrangements, but they all depend upon actions which cantake place at four different periods. Firstly, there is the momentjust before the shell and fuze are loaded into the gun, when thegunner can remove a safety cap or a safety pin, or insert astriking rod. Secondly, there is the moment of discharge, whenthe shell and fuze are thrown violently forward, so that theinertia of an internal movable part can cause it to set , there is the period during the flight of the shell when ittravels with the spinning motion imparted by the rifling ofthe gun, so that centrifugal force can cause a movable part INSTANTANEOUS FUZE. ENGINEERING POINT OF VIEW. 153 within the fuze to fly outwards. Fourthly, there is the momentof impact, when a striking rod is forced in, or, motion beingsuddenly checked, the momentum of an internal movable partcan cause it to fly forwards. A typical example of an Instantaneous Fuze is illustratedin Fig. 7. It consists of a main body (A) into which is screwedthe plug (B), carrying the ignition cap (C) ; from this a flashhole passes through the plug to the magazine (D). Above theignition cap is the striking pin (E), at the top of which is thehammer head (F), which is prevented from descending by twohalf collars between the under side of the hammer head and thetop of the body of the fuze ; these half collars are retained inposition by a length of flexible brass tape (G), having a smallweight attached to its outer end. The striking pin is furtherheld in position by a fine copper wire (H), and a steel guidepin (K), and is protected by the safety cap (SI). Action—Before loadin
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Keywords: ., bookcentury1800, bookdecade186, bookpublisherlondon, bookyear1861
