thstand ternal diameter is 3°4 feet at the breech, and itsinternal ‘said is that, during the process of drilling, the piece re- the pressure that tends to blow out the breech. Pieces diameter 10 inches at the powder chamber. The trun- |mains immovable and the tool advances as it revolves. of great… … rally speaking, a function of its caliber, and in- invented by Col. De Bange, which renders the Fig. 1—DETAILS OF THE BREECH PLUG. creases with the weight per unit of the projec- tube and hoops absolutely interdependent in a transverse and longitudinal direction. To tile’s section. Now, the De…
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