The Great Seal Patent Office

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 John Gottlieb Ulrich - Chronometers - No. 7350

Catalogue no: 1032
Dewey No: Subject(s): Patents
Author(s): John Gottlieb Ulrich
Total pages: 10 Illustrations: 6 fold out Language(s): English Publication date: 1837
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Paper covers and illustrations torn
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Notes:
Relates to "Certain Improvements in Chronometers". The patent describes six improvements as follows; An improved escapement designed to prevent stoppage from sudden shocks. A compensation device for the balance, another for the pedulum of an astronomical timekeeper, and the use of non magnetised material. A mechanism for stopping the hands of a watch without stopping the mechanism. A new method of locking and unlocking the striking parts of those chronometers that sound the time. A mechanism for releasing the striking parts of an alarm.
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Specification of John Gottlieb Ulrich - Chronometers. No. 5136

Catalogue no: 1027
Dewey No: Subject(s): Patents
Author(s): John Gottlieb Ulrich
Total pages: 4 Illustrations: 1 fold out Language(s): English Publication date: 1825
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper cover fragile and torn
Related titles: References in The Marine Chronometer,by R.T.Gould Related library records:
Notes:
Relating to, "Certain Improvements on Chronomters". The patent describes Ulrich's chronometer escapement, an example of which is in the BHI Museum Collection Reprint of 1857 R.T.Gould is critical of Ulrich's work, as follows; "His personal skill, perseverance and ingenuity, were of a high order, but he suffered from a persistent tendency to prefer a complicated mechanism to a simple one, and from an entire lack of business adroitness and prudence".
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Specification of Joseph Anthony Berrollas - Watches - No. 5489

Catalogue no: 1028
Dewey No: Subject(s): Patents
Author(s): Joseph Anthony Berrollas
Total pages: 8 Illustrations: 1 fold out Language(s): English Publication date: 1827
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper cover fragile and torn
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Notes:
Relating to; "A detached Alarum Watch". The patent describes the alarm innovations as follows; "the new combination of machinery which I have produced in the detent and its appendages, the elevator, the propellor, and the locker in the watch movement and the combined operation of these with the locking lever and its wire tail" Reprint of 1857
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Specification of John Gottlieb Ulrich - Chronometers - No. 5639

Catalogue no: 1029
Dewey No: Subject(s): Patents
Author(s): John Gottlieb Ulrich
Total pages: 5 Illustrations: 1 fold out Language(s): English Publication date: 1828
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper cover fragile and torn
Related titles: See catalogue no. 1027 Related library records:
Notes:
Relating to, "Improvements in Chronometers". A further refinement of patent no. 5136 of 1825 (New Cat. No. 1027) Reprint of 1856
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Specification of Robert Westwood - Timekeepers - No. 5850

Catalogue no: 1030
Dewey No: Subject(s): Patents
Author(s): Robert Westwood
Total pages: 3 Illustrations: 1 Language(s): English Publication date: 1829
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper cover fragile
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Notes:
Relating to; "Certain Improvements in Watches and Timekeepers". The patent describes a watch movement of 8 days duration with a going barrel of more than two thirds diameter of the movement itself. The other wheels of the train are mounted under the barrel in cavities in the pillar plate, between the pillar plate and the dial plate. Malcolm Gardner, Horological Bookseller sticker on cover and first page. Reprint of 1856
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Specification of Edward John Dent - Balance Springs for Timekeepers - No. 7067

Catalogue no: 1031
Dewey No: Subject(s): Patents
Author(s): Edward John Dent
Total pages: 3 Illustrations: None Language(s): English Publication date: 1836
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper cover very fragile and worn
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Notes:
Relates to "An Improvement of the Balance Springs and their Adjustments of Chronometers and other Timekeepers". This patent describes the use of a flexible varnish that would protect the balance spring from rust but not affect its performance. Malcolm Gardner, Horological Bookseller sticker on cover and first page.
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Specification of George Prior - Chronometers - No. 4214

Catalogue no: 1022
Dewey No: Subject(s): Patents
Author(s): George Prior
Total pages: 4 Illustrations: 1 Language(s): English Publication date: 1818
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper covers fragile
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Notes:
An invention , "For perfectly Detaching the Escape Wheel of Chronometers from the Influence of the Friction and Inaccuracies arising from the Main-Spring, the Pivots, and the Teeth, and all the other Wheels and Pinions in the Machine, during the Time of its giving Impulse to the Balance, whereby the Vibrations will be more accurately and uniformly supported than by any other Invention heretofore made public, which Invention will be much benefit and Utility for producing a superior Rate of Time-keeping." Malcolm Gardner, Horological Bookseller sticker on blue cover and first page.
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Secification of John Roger Arnold - Expansion Balance For Chronometers - No. 4531

Catalogue no: 1023
Dewey No: Subject(s): Patents
Author(s): John Roger Arnold
Total pages: 3 Illustrations: 1 Language(s): English Publication date: 1821
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper covers fragile
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Notes:
Relates to, "A New or Improved Expansion Balance for a Chronometer". Describes a bi-metallic balance which has two vertical arms, each with a weight that is moved either towards the centre of the balance or away from it when the temparature rises or falls. Reprint of 1857
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Specification of James Ferguson Cole - Chronometers - No. 4530

Catalogue no: 1024
Dewey No: Subject(s): Patents
Author(s): James Ferguson Cole
Total pages: 5 Illustrations: 1 fold out Language(s): English Publication date: 1821
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper covers fragile
Related titles: Its About Time, by P. Chamberlain, pp 402-10. Related library records:
Notes:
Relating to, "Certain Improvements in Chronometers". Chamberlain describes this patent, "It was a pivoted detent escapement with safety pin, a locking plate on the balance staff, the passing spring in a reversed position, balance of a solid steel disc turned thin between hub and rim, a compensation giving effective lengths to balance spring and adjusted by tangent screw". Reprint of 1857
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