Courtenay Ilbert Archive

On the Apsidal Motion of a Freely Suspended Pendulum

Catalogue no: 1503
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): The Rev. Joseph A. Galbraith and the Rev. Samuel Haughton
Total pages: 6 Illustrations: 0 Language(s): English Publication date: 1851
Editor: Publisher: Philosophical Magazine and Journal
Dimensions: 215mm x 130mm Condition: Reasonable
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Notes:

A brief scientific report on this subject stemming from experiments with Foucault pendulums.

The authors write from Trinity College, Dublin

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The Resistance of the Air, determined from Captain Kater's Experiments on the Pendulum

Catalogue no: 1502
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): Captain Kater, Unknown
Total pages: 15 Illustrations: 0 Language(s): English Publication date: 1823
Editor: Publisher: Astronomical and Nautical Collections
Dimensions: 210mm x 130mm Condition: Good
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Observations for ascertaining the length of the Pendulum at Madras in the East Indies,... with the conclusions drawn from the same.
Notes:

Report on the scientific studies carried out on this subject by Captain Kater.

First sentences reveal the thrust of the research.

"The effect of resistances of various kinds on the vibrations of the pendulum is become a subject of increased importance, from its influence on the determination of a standard measure: for although the effect of these resistances on the time may be wholly inconsiderable, it is by no means superfluous to prove, by demonstrative evidence that they are actually insensible."

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Observations for ascertaining the length of the Pendulum at Madras in the East Indies,... with the conclusions drawn from the same.

Catalogue no: 1501
Dewey No: 681.1124 Subject(s): Courtenay Ilbert Archive
Author(s): John Goldingham
Total pages: 43 Illustrations: 1 Language(s): English Publication date: 1822
Editor: Publisher: Unknown
Dimensions: 270mm x 210mm Condition: Good, first page slightly dirty
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Notes:

The author describes the experiments carried out using a regulator timepiece with grid-iron pendulum by Haswell, together with apparatus designed for such experiments by Captain Kater.

Detailed descriptions given as to how the clock and apparatus were set up together with an excellent engraving showing the clock with the experiments taking place.

Thirty pages of charts giving precise details of the performance of the clock over the period of a month, readings of barometric pressure, temperature and humidity, and conclusions reached.

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Search terms: Pendulums, Precision Timekeeping
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Pendulum

Catalogue no: 1500
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): Unknown
Total pages: 6 Illustrations: 1 Language(s): English Publication date: 1812
Editor: Publisher: Pantologia
Dimensions: 260mm x 170mm Condition: Reasonable
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Notes:

Entry in the Encyclopedia "Pantologia".

Covers in some detail the theory and construction of pendulums, including compensation pendulums.

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Mr H. Ward's Compensation Pendulum

Catalogue no: 1499
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): Henry Ward
Total pages: 12 Illustrations: 1 Language(s): English Publication date: 1808
Editor: Publisher: Society for the Encouragement of Arts, Manufactures and Commerce
Dimensions: 210mm x 130mm Condition: Good
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Notes:

Full description and illustration (6 engravings) of a  form of zinc and iron compensation pendulum, for which the author received the Silver Medal of the Society for the year 1808.

Ward claims the advantage of his pendulum lies in the simplicity of its design and manufacture.

Final pages are a record with charts of the performance of the clock "...determined from observations of the Sun's Transit over the Meridian."

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Specification of the Patent granted to Joseph Manton, of Davies Street, Berkeley Square, London, Gun-maker; for improved Time-keepers.

Catalogue no: 1498
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): Joseph Manton
Total pages: 4 Illustrations: 1 Language(s): English Publication date: 1807
Editor: Publisher: Unknown
Dimensions: 215mm x 140mm Condition: Reasonable
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Notes:

Description and illustration of a clock kept and wound in a vacuum chamber.

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Description of a Tubular Pendulum having All the Properties of the Gridiron but Being more compact as well as more steady in its Motions.

Catalogue no: 1497
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): Edward Troughton
Total pages: 7 Illustrations: 1 Language(s): English Publication date: 1804
Editor: Publisher: Philosophical Journal?
Dimensions: 210mm x 130mm Condition: Reasonable
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Notes:

A separately published offprint, in the form of a letter to Mr Nicholson, Author of the Philosophical Journal, originally published in that journal in December, 1804.

Although firstly a maker of telescopes and other astronomical instruments, the author describes how he has been making pendulums for twenty years, "...and I own the subject is still agreeable to me, being yet unencumbered with patents, the reason of which no doubt is, that the few wanted hold out no prospect of gain."

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On the Discordancies in the Results of the Methods for determining the Length of the simple Pendulum

Catalogue no: 1496
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): Francis Baily, Esq. F.R.S.
Total pages: 8 Illustrations: 0 Language(s): English Publication date: 1829
Editor: Publisher: Unknown
Dimensions: 230mm x 150mm Condition: Reasonable, a little regged with tears
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Notes:

pp.97-104 extracted from an unknown publication (Though possibly Philosophical Transactions) and bound separately between paper covers.

Written in ink on front cover: "Length of Simple Pendulum by Francis Baily"

Content of text is best described in first sentence:

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Concerning Pendulums

Catalogue no: 1495
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): Unknown
Total pages: 46 Illustrations: 1 Language(s): English Publication date: c.1793
Editor: Publisher: Lectures on Natural Philosophy
Dimensions: 210mm x 135mm Condition: Good
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Notes:

A full account of the definition and theory of pendulums, isochronism, cycloidal arcs and compensation.  Examples given of how to solve pendulum problems, lengths etc.

Final section concerns the nature of time with many references to the Divine influence God.

Pull out engraving shows different pendulums, experiments and a dead beat escapement.

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On Isochronous Time-Keepers

Catalogue no: 1494
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): Thomas Reid
Total pages: 3 Illustrations: 0 Language(s): English Publication date: 1815
Editor: Publisher: Philosophical Magazine and Journal
Dimensions: 230mm x 145mm Condition: Reasonable
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Notes:

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

A published letter in response to a letter from a Mr Tillock in a previous edition of this magazine (May 1815). 

Concerns the secure fixing and proper suspensions of pendulums with mention of John Ellicott clocks and those of Mr. De Lue.  A foot note describes the means by which a clock is brought to time at this period.

 

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