INDEX.

Adytic lock, [176]; machine for manufacturing the keys of the, [185]; number of changes in the lock, [188]; advantages of, [189]; discussion on its value, [192].
Ainger on the Bramah lock, [111].
Ainger’s lock, [61].
Alarum lock, [40].
American locks, [82]; Stansbury’s lock, [83]; Yale’s lock, [83]; Dr. Andrews’s lock, [84]; Day and Newell’s locks, [86]; their Parautoptic lock, [89]; Hobbs’s Protector lock, [99].
Ancient locks, [8].
Andrews’s lock, [84]; snail wheel lock, [85].
Appendix, [173].
Aubin’s lock trophy, [166]; locks forming it described, [168].
Barron’s tumbler lock, [49]; Bramah on, [68].
Bird’s tumbler lock, [52].
Bramah on Barron’s tumbler lock, [68]; on the defects of the tumbler lock, [68]; on the defects of the warded lock, [66].
Bramah lock, [70]; cylinder lock, [73]; number of changes in the Bramah lock, [81]; picked by Mr. Hobbs, [121]; report of the arbitrators, [123], [124]; a description of the lock picked, [125]; letters from Messrs. Bramah questioning the fairness of the trial, [126]; method of picking, [110]; method employed by Mr. Hobbs, [129]; Ainger on the Bramah lock, [110]; Farey on the Bramah lock, [113]; improvements made since 1851, [131].
Brown’s letter lock, [23]; picked by Mr. Hobbs, [139].
Bullion vaults of the Bank of France, [206].
Chatwood’s safes described, [203].
Chinese locks, [171].
Chubb on Davies’s lock, [112]; on lock picking, [132].
Chubb’s lock, [53]; described, [54], [56]; key of, [57]; attempt to pick, [58]; experiments on, [59]; number of changes in the lock, [55]; the detector lock picked by Mr. Hobbs, [115]; value of the detector questioned, [117]; improvements, [121]; Mr. Hodge on the Chubb lock, [114]; Chubb’s new locks, [147]; bank locks, [149].
Clockwork, application of, to locks, [39].
Closet-lock, [17].
Commercial importance of locks, [2].
Contrivances for adding to the security of locks, [35].
Cut locks, [18].
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 lock, [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, [113]; 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 parautoptic 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, [138]; mode of picking the Egyptian lock, [139]; method of picking tumbler locks, [118]; method of picking the Yale lock, [140]; Mr. Chubb on lock-picking, [132]; contrivances to prevent the picking of locks, [105].
Lock trophy, Aubin’s, [166]; locks composing the, described, [168].
Lock and key, improved, [176].
Locks, English patents for, [164]; Jury Report, Exhibition of 1851, on, [131]; observations on the Report, [133]; effects of the Exhibition of 1851 in improving English locks, [140]; use of machinery in the manufacture of, [163], [200].
Locks, &c., invented by the Marquis of Worcester, [35].
Locks and keys, literature of, [4]; list of references in the “Transactions of the Society of Arts” relating to, [166].
Louis XVI., his fondness for lock-making, [26], [35].
Machin’s web key, [61].
Mackinnon’s key, [62].
Manufacture of locks and keys at Wolverhampton, state of the, [154].
Marshall’s secret escutcheon, [37].
Master keys, [31].
Meighan’s alarum lock, [40].
Mitchell and Lawton’s tumbler lock, [52].
Mortise locks, [17], [18].
Multiple-bolt locks, [41],
Nettlefold’s lock, [60].
Newell’s parautoptic lock, [89].
O’Brien, Captain, on Davies’s lock, [112].
Owen’s experiments on Chubb and Bramah locks, [59].
Parautoptic lock, [89]; key, [91]; Austrian Report on, [93]; English patent for, [98]; attempts to pick the, in America, [106]; Report of the American Institute on the lock, [107]; latest challenge issued by Messrs. Day and Newell, [108]; Mr. Garbutt’s attempt to pick the, [134]; failure of the attempt, [135].
Parnell’s defiance lock, [141].
Parson’s lock, [61].
Patents, English, for locks, [164].
Pin-lock of Egypt, [14].
Puzzle-lock, [19].
Regnier’s puzzle locks, [21].
Right-hand lock, [17].
Ring lock, [17].
Roman locks, [10].
Rowntree’s tumbler lock, [50].
Russell’s screw-lock for casks, [38].
Russian locks, [171].
Rutherford’s lock, [39].
Ruxton’s detector for tumbler locks, [53].
Safes, value of iron, [201]; Chatwood’s, [203]; see also [Iron Safes].
Saxby’s prize lock, [152]; picked by Mr. Hobbs, [153].
Screw locks, [38].
Skeleton keys, [30].
Society of Arts’ prize lock, [30].
Somerford’s lock, [60].
Spring-stock lock, [17].
Stansbury’s lock, [83].
Stop lock, Fenby’s, [196].
Straight locks, [18].
Tentative process of lock-picking, [110].
Three-bolt lock, [17].
Tumbler locks, [43]; lock described by M. de Réaumur, [46]; modern tumbler lock, [52]; introduction of the detector, [53]; Chubb’s lock, [53], [56]; key of, [57]; advantages and defects of tumbler locks, [63]; Hobbs’s method of adjustment, [63].
Tumbler locks, Mr. Fenby on, [174]; method of picking, [118]; double action, [49].
Two-bolt lock, [17].
Ward locks, [18].
Warded locks, [27]; action of the key on the wards, [28]; insecurity of, [29]; warded locks of the last century, [31]; insecurity of, illustrated by Mr. Chubb, [34]; Bramah on the defects of, [66]; Mr. Fenby on, [173].
Wheel locks, [18].
Wheel and pinion, application of, to locks, [39].
Williams’s lock, [62].
Wolverhampton, account of the state of the lock and key manufacture at, [154].
Worcester, inventions of the Marquis of, relating to lock-making, [35].
Yale’s lock, [83]; method of picking, [140].
Yale’s cylinder lock, [152].

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