Rudimentary Treatise On The Construction Of Locks

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Rudimentary Treatise on the Construction of Locks

A. C. Hobbs,George Dodd
Rudimentary Treatise on the Construction of Locks Book PDF

Author : A. C. Hobbs,George Dodd
Publisher : Unknown
Page : 312 pages
File Size : 49,8 Mb
Release : 2020-10-24
Category : Electronic
ISBN : 9798698786610

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Rudimentary Treatise on the Construction of Locks by A. C. Hobbs,George Dodd Pdf

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 obtained in considerable number, though not always, we are satisfied, with a commensurate return for the expense incurred,--but lock-philosophy (if so it may be designated) has not been largely attended to.And yet it may safely be said that much which is both mechanically and commercially important is comprised in a lock. Every improvement in the manufacture of iron, steel, and brass--that is, in the tool-making and machine-making processes--may be made to reflect its light on the lock-manufacture; the stamping, the casting, the planing, the slotting, the screw-cutting, the polishing of metals,--all, in proportion as they are improved, impart some of their aid to the lock-maker. Then, in the finer kinds of locks, the works are so delicate as to approach to the nicety of clockwork; thereby combining the manipulative skill of a talented artisan with the rougher mechanical work of the smith. The principles of mechanical science are also appreciated by many lock-makers. The lever, the inclined plane, the eccentric, the cam, the screw, the wheel and pinion, the ratchet, the spring,--all are brought to bear on the internal mechanism of locks, frequently in many novel combinations.

Firewalls and Internet Security

William R. Cheswick,Steven M. Bellovin,Aviel D. Rubin
Firewalls and Internet Security Book PDF

Author : William R. Cheswick,Steven M. Bellovin,Aviel D. Rubin
Publisher : Addison-Wesley Professional
Page : 466 pages
File Size : 55,6 Mb
Release : 2003
Category : Computers
ISBN : 020163466X

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Firewalls and Internet Security by William R. Cheswick,Steven M. Bellovin,Aviel D. Rubin Pdf

Introduces the authors' philosophy of Internet security, explores possible attacks on hosts and networks, discusses firewalls and virtual private networks, and analyzes the state of communication security.

A Treatise on Fire and Thief-proof Depositories, and Locks and Keys

George Price (of Wolverhampton.)
A Treatise on Fire and Thief proof Depositories and Locks and Keys Book PDF

Author : George Price (of Wolverhampton.)
Publisher : London : Simpkin, Marshall
Page : 1000 pages
File Size : 47,7 Mb
Release : 1856
Category : Locks and keys
ISBN : WISC:89080126394

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A Treatise on Fire and Thief-proof Depositories, and Locks and Keys by George Price (of Wolverhampton.) Pdf

Locks and Safes. The construction of locks; compiled from the papers of A. C. Hobbs, ... and edited by C. Tomlinson. ... To which is added a description of ... J. B. Fenby's patent locks, and a note upon iron safes. By R. Mallet

A. C. HOBBS (of New York.)
Locks and Safes The construction of locks compiled from the papers of A C Hobbs and edited by C Tomlinson To which is added a description of J B Fenby s patent locks and a note upon iron safes By R Mallet Book PDF

Author : A. C. HOBBS (of New York.)
Publisher : Unknown
Page : 256 pages
File Size : 51,6 Mb
Release : 1868
Category : Electronic
ISBN : BL:A0018313389

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Locks and Safes. The construction of locks; compiled from the papers of A. C. Hobbs, ... and edited by C. Tomlinson. ... To which is added a description of ... J. B. Fenby's patent locks, and a note upon iron safes. By R. Mallet by A. C. HOBBS (of New York.) Pdf

A general catalogue of books in every department of literature, for public school libraries in Upper Canada. Sanctioned by the Council of Public Instruction. ... With the general provisions of the law and the regulations for the establishment of public libraries, etc

Ontario. Department of Education
A general catalogue of books in every department of literature for public school libraries in Upper Canada Sanctioned by the Council of Public Instruction With the general provisions of the law and the regulations for the establishment of public libraries etc Book PDF

Author : Ontario. Department of Education
Publisher : Unknown
Page : 286 pages
File Size : 47,6 Mb
Release : 1857
Category : Electronic
ISBN : BL:A0018266915

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A general catalogue of books in every department of literature, for public school libraries in Upper Canada. Sanctioned by the Council of Public Instruction. ... With the general provisions of the law and the regulations for the establishment of public libraries, etc by Ontario. Department of Education Pdf

A rudimentary treatise on the manufacture of Bricks ... Revised ... by C. Tomlinson. Fourth edition, with additions by R. Mallet ... With illustrations

Edward DOBSON (Civil Engineer)
A rudimentary treatise on the manufacture of Bricks Revised by C Tomlinson Fourth edition with additions by R Mallet With illustrations Book PDF

Author : Edward DOBSON (Civil Engineer)
Publisher : Unknown
Page : 320 pages
File Size : 53,5 Mb
Release : 1868
Category : Electronic
ISBN : BL:A0018313383

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A rudimentary treatise on the manufacture of Bricks ... Revised ... by C. Tomlinson. Fourth edition, with additions by R. Mallet ... With illustrations by Edward DOBSON (Civil Engineer) Pdf

High-Security Mechanical Locks

Graham Pulford
High Security Mechanical Locks Book PDF

Author : Graham Pulford
Publisher : Butterworth-Heinemann
Page : 616 pages
File Size : 53,8 Mb
Release : 2007-10-17
Category : Social Science
ISBN : 9780080555867

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High-Security Mechanical Locks by Graham Pulford Pdf

High-Security Mechanical Locks comprehensively surveys and explains the highly technical area of high security locks in a way that is accessible to a wide audience. Well over 100 different locks are presented, organized into 6 basic types. Each chapter introduces the necessary concepts in a historical perspective and further categorizes the locks. This is followed by detailed 'how it works' descriptions with many pictures, diagrams and references. The descriptions are based on actual dissections of the real locks. The scope is limited to key operated mechanical locks, thus keyless combination locks and digital locks are not covered. The book does not deal with routine locksmithing topics such as installation and servicing of locks. The sensitive area of picking and bypassing of locks is dealt with only at a high level without giving detailed information that would be unacceptable in the wrong hands. * Comprehensive coverage of over 100 different types of 19th and 20th century key-operated locks, unified in a simple classification scheme * Detailed operating principles - clear 'how it works' descriptions * Manipulation resistance rating for each lock on a scale of 1 to 5