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第169章 后膛枪(1 / 2)

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陈惟中看着赵昰画的后装卡宾枪图样,脸色由黄到白,由白变红。

“唉,我如何就未曾想到!”陈惟中神色有些激动,“这只需枪管后面装一个带卡扣的铁塞便可以了。这卡扣可以用扳机护手联动,并不复杂啊。”

“没有那么简单的。”赵昰摇摇头继续说道:“目前没有密封材料,这两种后装方式漏气都会很严重。这就需要极为精密的加工,保证误差很小。这就会增加每杆枪支的成本。”

赵昰指着夏普斯的枪机结构说道:“这个向上推的部件,暂且称为闭锁块,要是和枪身空隙太大,那么子弹就飞不远了。火药的燃气都泄露了。这个部件单靠铸造打磨是不行的,如果使用合金钢来加工,靠人力怕是一个就需要五六天之久。”

陈惟中有些疑惑,“这御前兵器所不都使用水轮力了吗?可以用水轮带动车钻镗,便无如此费工费时了。”

赵昰摇摇头,“不行的,哪怕是水轮带动,如今也无齿轮增速,这功效甚弱。工匠的工钱总不能拖欠克扣,这一杆做下来要比三杆维中二式更贵。”

陈惟中有些听不懂,“请问官家何谓齿轮?”

赵昰拿着圆规画了两个圈,上面写意地画了些齿出来,指着说道:“便是如此,这大齿轮旋转带动小齿轮,大齿轮转一圈,则小齿轮可转若干圈,便能提速。”

“哦,这便是和棘轮相仿。”陈惟中叉手说道:“官家有所不知,若是如此说来,这水轮如今已经用上了齿轮?”

“这还能造出齿轮来?”陈惟中的话让赵昰大吃一惊。

陈惟中答道:“广州光复不久便来了几个将做监的小吏,他们曾造过水运仪象台,便是会做这些齿轮的。”

水运仪象台这个东西,赵昰只在历史课本上读到过依稀记得是天文计时用的,至于具体什么样式根本不了解。

水运仪象台

赵昰有些吃不准,便又问道:“这齿轮是铁的还是青铜的?”

“木头的。”

“可这加工的刀头没有铁制齿轮带动,靠木制的怎么能加工得了铁器。”

“可以带动,现在枪炮所便都用了这棘轮增速,省工省时良多。至于官家说的改为铁制我回去也可尝试。”

陈惟中指着泰瑞卡宾枪的枪机图纸说道:“这个用料甚少,看起来也不复杂,无非是个后拉的铁堵头加半个铁圈。”

赵昰叹气道:“哎,这看看是容易,可是这材料用熟铁不行,得用好钢。这种旋转后拉式的枪机,要求的钢材要好,不然打几次后面的枪机不就就坏了。”

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