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Specification of George Philcox - Chronometers and other Timekeepers - No. 11,177

Catalogue no: 1046
Dewey No: Subject(s): Patents
Author(s): George Philcox
Total pages: 3 Illustrations: 1 fold out Language(s): English Publication date: 1846
Editor: Publisher: The Great Seal Patenet Office
Dimensions: 290mm x 200mm Condition: Blue paper cover missing
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Notes:
Relates to; "Improvements in the Construction of Chronometers and other Timekeepers". Patent describes the use of two balance springs, either helical or spiral, on a single balance wheel, so arranged that when one balance spring is fully opened, the other is fully closed, "by which means I am enabled to neutralize the error of a chronometer spring when acted upon by variations of temparature".
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Specification of Thomas Wright & Alexander Bain - Application of Electric Currents to railway Signalling, Telegraphs, &c. - No. 9204

Catalogue no: 1047
Dewey No: Subject(s): Patents
Author(s): Alexander Bain, Thomas Wright
Total pages: 10 Illustrations: 4 fold out Language(s): English Publication date: 1841
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Only front cover remains detached and very frayed and fragile
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Notes:
Relates to; "Improvements in applying Electricity to Control Railway Engines and Carriages, to Mark Time, to give Signals and Print Intelligence at Distant Places".
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Specification of Charles Hanson - Clocks and Watches - No. 10,876

Catalogue no: 1043
Dewey No: Subject(s): Patents
Author(s): Charles Hanson
Total pages: 5 Illustrations: 1 fold out Language(s): English Publication date: 1845
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper cover fragile
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Notes:
Relates to; "Certain Improvements in Clocks, Watches, or Timekeepers". Several drawings on fold out page illustrating the patent described as follows; "The novel construction of detent for locking the escapement wheel of timekeepers". "The construction and arrangement of locking apparatus". "The application of a spring to the verge staff in place of the rigid pallett." Reprint of 1856 Malcolm Gardner, Horological Bookseller sticker on cover and first page.
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Specification of John Peter Isaie Poncy - Clocks and Chronometers - No. 8602

Catalogue no: 1039
Dewey No: Subject(s): Patents
Author(s): John Peter Isaie Poncy
Total pages: 6 Illustrations: 1 fold out Language(s): English Publication date: 1840
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper cover fragile
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Notes:
Relates to; Improvements in Clocks and Chronometers". The patent involves, "the mode of constucting chronometers and clocks, in order to their going for a longer period without being wound up, and in such a manner that two mainsprings are used in combination with what I call a constant power or regulator, whereby the power of the two springs is transmitted to the escapement by means of such constant power or regulator." Reprint of 1856 Malcolm Gardner, Horological Bookseller sticker on cover and first page
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Specification of Edward Massey - Watches - No. 9120

Catalogue no: 1040
Dewey No: Subject(s): Patents
Author(s): Edward Massey
Total pages: 4 Illustrations: 1 fold out Language(s): English Publication date: 1841
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper cover very fragile and torn in half
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Notes:
Relating to; "Improvements in Watches". The fold out page contains 9 drawings pertaining to the following details of the patent; 1. Modes of compensation 2. The arrangement of locking pallets 3. Keyless winding mechanism. 4. The mode of striking at every fifth second by altering the position of the watch Reprint of 1856 Malcolm Gardner, Horological Bookseller sticker on cover and first page
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Specification of Edward John Dent - Chronometers and Other Timekeepers - No. 9302

Catalogue no: 1041
Dewey No: Subject(s): Patents
Author(s): Edward John Dent
Total pages: 9 Illustrations: 1 fold out Language(s): English Publication date: 1842
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Paper cover very fragile
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Notes:
Relates to; "Certain Improvements in Chronometers and other Timekeepers". The patent describes a secondary compensation device for a chronometer balance (a primary compensation with my continuous secondaty compensation). Also, "the simultaneous locking of two escape wheels by one locking spring in a chronometer or other portable timekeeper". Reprint of 1856
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Specification of John Richard Lund - Chronometers - No. 9969

Catalogue no: 1042
Dewey No: Subject(s): Patents
Author(s): John Richard Lund
Total pages: 6 Illustrations: 3 fold out Language(s): English Publication date: 1843
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper cover fragile
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Notes:
Relates to; "Improvements in the Construction of Compensation Balances of Chronometers". Innovation described as follows; "but I claim as my Invention, and as my "Improvements in Compensation Balances of Chronometers", the mode of constructing the compensation weights of chronometers, whereby they are so provided with laminae that the expansion or contraction thereof shall, by acting on a part of the compensation weights, vary the effect of such weights on the compensation balance to which they are applied." Reprint of 1856
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Specification of James Callard Davies - Clocks - No. 8515

Catalogue no: 1038
Dewey No: Subject(s): Patents
Author(s): James Callard Davies
Total pages: 4 Illustrations: 1 fold out Language(s): English Publication date: 1840
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Paper cover fragile and torn
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Notes:
Relates to; "An Improved Clock or Timepiece". The clock described is a small protable timepiece with a duration of over one year between windings. Reprint of 1857 Malcolm Gardner, Horological Bookseller sticker on cover and first page.
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Specification of Edward Massey - Watches and Machines for Timekeeping - N0. 7807

Catalogue no: 1033
Dewey No: Subject(s): Patents
Author(s): Edward Massey
Total pages: 3 Illustrations: 1 fold out Language(s): English Publication date: 1838
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper covers fragile
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Notes:
Relating to; "Improvements in Watches and Machines for Keeping Time". The text and illustraions describe five improvements as follows; A new method of making the verge for a common watch by fitting jewelled pallets in notches. Another variation of the verge where the pallets are set further backpast the centre so that when jewelled faces are added, the pallet angles will be correct. A detached marine chronometer escapement with locking detents on pivots with a simplified controlling spring.
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Specification of Edward John Massey - Chronometers and other Timekeepers - No. 7678

Catalogue no: 1034
Dewey No: Subject(s): Patents
Author(s): Edward John Massey
Total pages: 3 Illustrations: 1 fold out Language(s): English Publication date: 1838
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue cover fragile
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Notes:
Relates to; "Certain Improvements in Chronometers and other Timekeepers". Patent describes the use in chronometers of two detents on separate axles, the advantage claimed being able to use very delicate springs and of locking the pallet wheel very near the centre of the circular detent. Malcolm Gardner, Horological Bookseller sticker on front cover and first page. Malcolm Gardner, Horological Bookseller sticker on cover and first page.
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