Bolsover himself apparently did not appreciate the importance of this invention, and it remained for Joseph Hancock, one of his apprentices, to develop the idea to a commercial success. 佚名.神奇的知识之书.
A great many years ago a man called Bolsover became crazed by some unhappy experiences and decided to kill himself by fastening a rope around his neck and hanging from a cross-beam overhead. 佚名.神奇的知识之书.