210
INDEX.
- Davies's lock, Captain O'Brien on 112; Mr. Chubb on, 112.
- Davis's lock, 60.
- Day and Newell's lock, 86; Parautoptic lock, 89 et seq.
- Dead-lock, 17.
- Denison's large lock, 142; small ditto, 146.
- Dial locks, 23; method of picking, 138,
- Duhamel du Monceau's Art du Serrurier, 4.
- Egyptian door-fastenings, 13.
- Egyptian pin-lock, 14; method of picking, 139.
- Escutcheon, uses of the, explained, 37.
- Exhibition of 1851, effects of the, in improving English locks, 140, Jury Report on locks, 131; observations on the Report, 133.
- Farey on the Bramah lock, 113.
- Fenby on warded locks, 173; on tumbler locks, 174.
- Fenby's adytic lock, 176; machine for making the keys of, 185; number of changes in the, 188, advantages of, 189; discussion on the value of the lock, 192, stop-lock, 196; machines for the manufacture of the locks, 200.
- Fons, Mr. de la, his improvement in locks, 148.
- French locks, ancient, 32.
- Friend's secret lock, 39.
- Greek locks, 9.
- Hobbs on English locks made before 1851, 115; he picks a Chubb Joek, 116; a Bramah lock picked by Mr. Hobbs, 122; his mode of picking the Bramah lock described, 129; Mr. Brown's letter-lock picked by him, 139.
- Hobbs's protector lock, 99.
- Hodge on the Chubb lock, 114.
- Iron-rim lock, 17.
- Iron safes, value of, 201; the best position for a safe, 204; chamber for jewellers' safes described, 205; arrangement of bank safes, 205; Chatwood's safes, 203.
- Kemp's union lock, 81.
- Keys, master, 31; skeleton, 30; Mackinnon's key, 62; Machin's web key, 154.
- Knob lock, 17.
- Lacedæmonian lock, 11.
- Left-hand lock, 17.
- Letter locks, 22; method of picking, 138.
- Lever locks, 43,
- Literature of lock-making, 4; list of references to the "Transactions of the Society of Arts" relating to lock-making, 166.
- Lock classification, 17.
- Lock controversy, 102; previous to the Great Exhibition, 103; Mr. Chubb on Davies's lock, 112; Captain O'Brien on Davies's and other locks, 112; Mr. Farey on the Bramah lock, 1138; Mr. Hodge on locks, 114; lock controversy during and since the Great Exhibition, 115; Mr. Hobbs on English locks, 115; he picks the Chubb lock, 116; the Bramah lock picked by him, 121; statements of Messrs. Bramah, 125; attempt of Messrs. Garbutt to pick the parauteptic lock, 134.
- Lock manufacture at Wolverhampton, state of, described, 154.
- Lock-picking, distinction between "picking" and "ringing the changes" on a lock, 136; tentative process of picking, 110; method of picking letter and dial locks, 188; mode of picking the Egyptian lock, 139; method of picking tumbler locks, 118; method of picking the Yale lock, 140; Mr. Chubb on lock-pick-
