Page:Rudimentary Treatise on the Construction of Locks (1853).djvu/224

210 * 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