Courtenay Ilbert Archive

On a Correction requisite to be applied to the Length of a Pendulum consisting of a Ball suspended by a fine Wire

Catalogue no: 1513
Dewey No: 681.1124 Subject(s): Courtenay Ilbert Archive
Author(s): George Biddell Airy
Total pages: 6 Illustrations: 0 Language(s): English Publication date: 1829
Editor: Publisher: Privately published
Dimensions: 290mm x 230mm Condition: Reasonable
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Notes:

Pages extracted from an unknown journal and bound separately between paper covers.

Based on a paper read November 16, 1829.

Account of experiments on the length of a seconds pendulum.

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Search terms: Pendulums
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Spring Crutch For Pendulums

Catalogue no: 1512
Dewey No: 681.1124 BRA Subject(s): Courtenay Ilbert Archive
Author(s): Charles Brandt
Total pages: 2 Illustrations: 1 Language(s): English Publication date: 1821
Editor: Publisher: Society for the Encouragement of Arts, Manufactures and Commerce
Dimensions: 210mm x 130mm Condition: Reasonable
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Notes:

Pages extracted from this journal and bound separately between card covers

"The smaller of Vulcal Silver Medal was this Session voted to Mr. C. Brandt, of Jermyn-street, London, for an Adjusting Crutch For Clocks."

Communication to the Society in the form of a letter, plus an engraving illustrating his invention, from the Author, of 62, Jermyn-street, St James's, dated Feb. 8, 1821.

An invention designed to overcome the somewhat clumsy method of putting clocks in beat, (by bending the crutch), with a more sophisticated adjustable screw and spring arrangement.

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Improved Pendulum

Catalogue no: 1511
Dewey No: 681.1124 Subject(s): Courtenay Ilbert Archive
Author(s): David Ritchie
Total pages: 7 Illustrations: 1 Language(s): English Publication date: 1818
Editor: Publisher: Philosophical Transactions of the Royal Society
Dimensions: 210mm x 130mm Condition: Reasonable
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Notes:

Pages extracted from this journal and bound separately between card covers.

"The Gold Isis Medal and Thirty Guineas were this Session voted to Mr. D. Ritchie, of Clerkenwell, for an Improved Method Of Giving Motion To A Pendulum."

Main article is in the form of a letter from Ritchie of Northampton-street, Clerkenwell, written Feb. 15, 1818.

Room location: Library Extension Cabinet: F Shelf: 5
Search terms: Pendulums, Precision Timekeeping
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Compensation Pendulum for a Clock

Catalogue no: 1510
Dewey No: 681.1124 Subject(s): Courtenay Ilbert Archive
Author(s): Adam Reid
Total pages: 5 Illustrations: 3 Language(s): English Publication date: 1810
Editor: Publisher: Philosophical Transactions of the Royal Society
Dimensions: 225mm x 140mm Condition: Fragile, pages loose
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Notes:

Pages extracted from this journal and bound separately between paper covers.

"Fifteen Guineas were this session voted to Mr Adam Reid, of Green's End, Woolwich, for a Compensation Pendulum for a Clock."

Description of a zinc and iron half seconds pendulum, accompanied by an engraving of the features.

Also included in these pages, a description of Mr. Spark's Noctuary, "for ascertaining the hour at night, by an apparatus connected with a common watch".  Illustrated on the same page as the pendulum.  The Silver medal was awarded.

Room location: Library Extension Cabinet: F Shelf: 5
Search terms: Horological Tools, Nocturnals, Pendulums, Precision Timekeeping, Temperature Compensation
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Inventor of the Contrivance in the Pendulum of a Clock, to prevent the Irregularities of its Motion by Heat and Cold

Catalogue no: 1509
Dewey No: 681.1124 Subject(s): Courtenay Ilbert Archive
Author(s): James Short F.R.S.
Total pages: 7 Illustrations: 0 Language(s): English Publication date: 1752
Editor: Publisher: Philosophical Transactions of the Royal Society
Dimensions: 230mm x 180mm Condition: Reasonable
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Notes:

Pages taken from Royal Society magazine and bound separately between marbled paper.

Short's lecture on the compensated pendulum, "... and it having been often asked, who was the inventor of it, I have therefore thought proper to draw up the following historical account of it: And as this account contains nothing but matters of fact, supported by the best authorities, I hope it will be acceptable to this Society, ..."

Room location: Library Extension Cabinet: F Shelf: 5
Search terms: Pendulums, Temperature Compensation
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Treatises On The Pendulum

Catalogue no: 1508
Dewey No: 531.53 Subject(s): Courtenay Ilbert Archive
Author(s): Multiple
Total pages: 516 Illustrations: 1 Language(s): English Publication date: 1818-1832
Editor: Publisher: Philosophical Transactions of the Royal Society
Dimensions: 290mm x 225mm Condition: Reasonable, but hard covers separated at spine
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Notes:

Bound copy (grey/brown hard covers) of several articles on this subject read to the Royal Society 1818-1832.  Previously owned by Robert Gardner, Chronometer Maker, whose name is inscribed in ink inside front cover.

Details of articles as follows:

1. Remarks on the probabilities of error in physical observations, and on the density of the earth, considered, especially with regard to the reduction of experiments on the pendulum.  In a letter to Capt. Henry Kater, F.R.S.  By Thomas Young, M.D. For Sec. R.S.  Read January 21, 1819.  (24 pages)

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On the Pendulum

Catalogue no: 1507
Dewey No: 531.53 Subject(s): Courtenay Ilbert Archive
Author(s): J.W.Lubbock
Total pages: 7 Illustrations: 0 Language(s): English Publication date: 1830
Editor: Publisher: Philosophical Magazine and Journal
Dimensions: 290mm x 240mm Condition: Good
Related titles: Length of a Simple Pendulum (1496) Related library records:
Notes:

Experiments to determine the length of a simple pendulum following on from the work of Captain Kater (see 1502).

Pendulum used was the same as used by Mr Baily (see 1496)

Paper bound within hard covers (red)

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Account of Pendulum Experiments undertaken in the Harton Colliery, for the purpose of determining the Mean Density of the Earth

Catalogue no: 1506
Dewey No: 531.53 Subject(s): Courtenay Ilbert Archive
Author(s): George Biddell Airy
Total pages: 58 Illustrations: 2 Language(s): English Publication date: 1856
Editor: Publisher: Philosophical Transactions of the Royal Society
Dimensions: 300mm x 235mm Condition: Reasonable,
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Lecture on the Pendulum-Experiments at Harton Pit
Notes:

A lecture read January 24 and 31, 1856.

An experiment to determine the mean density of the earth carried out 1854-5. 

Begins with a history of the theory behind the experiment and its progress since 1826.

A full account of the experiment together with several charts of the clock's performance.

Two engravings at rear show a map of the Colliery area and another of the two clocks and other equipment used in the experiment.

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Search terms: Pendulums
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Lecture on the Pendulum-Experiments at Harton Pit

Catalogue no: 1505
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): George Biddell Airy
Total pages: 30 Illustrations: 2 Language(s): English Publication date: 1855
Editor: Publisher: G.B.Airy
Dimensions: 220mm x 145mm Condition: Good, some pages uncut
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Notes:

Full title on front cover as follows;

Lecture on the Pendulum-Experimants at Harton Pit, Delivered in the Central hall, South Shields, October 24th, 1854, by George Biddell Airy Esq., Astronomer Royal, Together with A Letter Containing The Results Of The Experiments.

The subject of this lecture is best described in the introduction;

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Professor Bond's Clock for Registering Astronomical Observations by Electricity

Catalogue no: 1504
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): Unknown
Total pages: 4 Illustrations: 0 Language(s): English Publication date: 1851
Editor: Publisher: Chamber's Edinburgh Journal
Dimensions: 250mm x 170mm Condition: Good
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Notes:

Pages extracted from this journal and stapled together between card covers.

Under the title, "A Peep into the Observatory", a full account is given on the subject of Harvard University professor Bond's new device.

Room location: Library Extension Cabinet: F Shelf: 5
Search terms: Precision Timekeeping
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