Category: Engineering & Technology
The manufacture of locks, and a consideration of the mechanical principles involved in their construction and security, have never yet been treated with any degree of fulness in an English work. Lock-making has occupied a large amount of ingenuity, and lock-patents have been o...
We next come to the remarkable year 1851, which produced so many unexpected results in connection with the industrial display in Hyde Park, and conferred a lasting benefit on th...
7. CHAPTER VII.The lock-manufacture in America has undergone some such changes as in England. The insufficiency of wards to the attainment of security has been for many years known; and the un...
5. CHAPTER V.Security being the primary object in all locks, any considerations as to mechanical ingenuity and graceful decoration give place to those which relate to safety. A spring lock m...
13. CHAPTER XIII.The simple _fixed-guard_ or _warded_ lock is so utterly worthless for security, no matter what amount of good workmanship be bestowed upon it, that it demands but short notice....
6. CHAPTER VI.The lock which was invented by the late Mr. Bramah deservedly occupies a high place among this class of contrivances. It differs very materially from all which has gone before i...
10. CHAPTER X.We have now to refer to the effects of the lock controversy. It was no doubt annoying to be told, on good authority, that the machines on which we so much prided ourselves were...
4. CHAPTER IV.The more ordinary locks are of an oblong quadrangular shape. In nearly all of them, either a bolt shoots out from the lock, to catch into some kind of staple or box, or a staple...
14. CHAPTER XIV.The introduction of the movable stump by Mr. Hobbs, in order to defeat picking by the tentative method of applying pressure to the bolt, so as to cause binding between the stump...
8. CHAPTER VIII.It must be evident, even on a cursory glance at the past history of the lock-manufacture, that the prime motive for the introduction of novelties and improvements in constructio...
3. CHAPTER III.In approaching the subject of modern locks it becomes necessary to decide upon some method of treating the widely-scattered and diverse materials which are presented to our noti...
11. CHAPTER XI.The manufacture of locks and keys, considered as a department of working in iron, is one that requires, and indeed admits of, very little description. The hammer, the file, the...
2. CHAPTER II.Locks and door-fastenings have not, until modern times, been susceptible of any classified arrangement according to their principles of construction. They have been too simple t...
12. CHAPTER XII.We propose to conclude this small work with a few details respecting the various patented inventions in locks, and concerning Mr. Aubin’s remarkable lock trophy. These two subje...
1. CHAPTER I.The manufacture of locks, and a consideration of the mechanical principles involved in their construction and security, have never yet been treated with any degree of fulness in...