- Software name: appdown
- Software type: Microsoft Framwork
- size: 317MB
On the road from Borgloon to Thienen I had a chat with an old crone, who stood weeping by the ruins of her miserable little cottage, which she refused to leave. This little house, which strenuous zeal had enabled her to buy, was all she possessed on earth besides her two sons, both fallen through the murderous lead of those barbarians, and buried in the little garden at the back of their ruined home. Of another family, living close by, the father and two sons were murdered in the same way.
An old smith who has stood at the forge for a score of years will take the same interest in tempering processes that a novice will. When a piece is to be tempered which is liable to spring or break, and the risk is great, he will enter upon it with the same zeal and interest that he would have done when learning his trade."Yes, sir," I replied, "excepting my pocket-knife."
I think proper to point out these peculiarities, not so much from any importance they may have in themselves, but to suggest critical investigation, and to dissipate any preconceived opinions of forging being a simple matter, easy to learn, and involving only commonplace operations.
Founding and casting relate to forming parts of machinery by pouring melted metal into moulds, the force of gravity alone being sufficient to press or shape it into even complicated forms. As a process for shaping such metal as is not injured by the high degree of heat required in melting, moulding is the cheapest and most expeditious of all means, even for forms of regular outline, while the importance of moulding in producing irregular forms is such that without this process the whole system of machine construction would have to be changed. Founding operations are divided into two classes, known technically as green sand moulding, and loam or dry sand moulding; the first, when patterns or duplicates are used to form the moulds, and the second, when the moulds are built by hand without the aid of complete patterns. Founding involves a knowledge of mixing and melting metals such as are used in machine construction, the preparing and setting of cores for the internal displacement of the metal, cooling and shrinking strains, chills, and many other things that are more or less special, and can only be learned and understood from actual observation and practice.
"I'm not going to try and deceive you," said Balmayne. "I'm going to play the game with all the cards on the table."