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On The Mercurial Compensation Pendulum

Catalogue no: 1519
Dewey No: 681.1124 Subject(s): Courtenay Ilbert Archive
Author(s): Francis Baily, Esq. F.R.S.
Total pages: 38 Illustrations: 0 Language(s): English Publication date: 1824
Editor: Publisher: Astronomical Society of London
Dimensions: 295mm x 235mm Condition: Pages fragile and ragged
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Notes:

Pages extracted from this journal and now bound between light red hard covers.

From a paper read by the Author to the Astronomical Society, May 9 and June 13, 1823.

The first section gives a history of the Mercurial Compensated pendulum from the time of George Graham, with details given on studies into the property of mercury since then.

Room location: Library Cabinet: E Shelf: 2
Search terms: Pendulums, Precision Timekeeping
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Pendulums. An Attempt Towards Obtaining Invariable Measures of Length, Capacity, and Weight, from the Mensuration of Time, Independant of the Mechanical Operations Requisite to Ascertain the Center of Oscillation, or The True Length of Pendulums

Catalogue no: 1518
Dewey No: 681.1124 Subject(s): Courtenay Ilbert Archive
Author(s): John Whitehurst
Total pages: 46 Illustrations: 3 Language(s): English Publication date: 1787
Editor: Publisher: The Author
Dimensions: 260mm x 210mm Condition: Good
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An account of experiments to determine the acceleration of the Pendulum in different latitudes
Notes:

Pamphlet now bound between red hard covers.

The introduction explains the purpose of the experiments with reference to the work of others before the Author.

In the main text, the apparatus designed and used for the experiments is explained and illustrated with three excellent pull-out engravings.

Several charts of results included.

Room location: Library Cabinet: E Shelf: 2
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An Account of M.Bessel's Pendulum Experiments

Catalogue no: 1517
Dewey No: 526.7 Subject(s): Courtenay Ilbert Archive
Author(s): Edward Sabine
Total pages: 27 Illustrations: 0 Language(s): English Publication date: 1829
Editor: Publisher: Quarterly Journal
Dimensions: 235mm x 150mm Condition: Pamphlet fragile but now bound within hard covers
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An account of experiments to determine the acceleration of the Pendulum in different latitudes
Notes:

Pages extracted from this journal and bound separately within orange hard covers.

This account is partly taken from the Author's own examination of Bessel's apparatus and partly from the Transactions of the Berlin Acadamy.

"M.Bessel's memoir may be divided into two general heads: first, the measurement of the seconds pendulum at Konigsberg, by a new method, invented by himself; and, second, dissertaions and experiments on points connected with pendulum experiments generally."

Notes and annotations in ink made to the text, possibly by the Author.

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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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A Historic Tompion Clock

Catalogue no: 1263
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): R.W.Symonds
Total pages: 5 Illustrations: 7 Language(s): English Publication date: May, 1939
Editor: Publisher: The Connoisseur
Dimensions: 300mm x 230mm Condition: Good
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Notes:
A detailed history of the famous Tompion table clock given by King Charles 2nd to the Countess of Castlemaine and thence to her son, the Duke of Grafton. The author describes (rather caustically) the replacement of the movement by Vulliamy in the 19th century and the gift of the original movement (grande sonnerie) to the Institute of Civil Engineers by Vulliamy. The article includes photographs as follows: 1. Portrait of the Countess of Castlemaine 2. Front view of clock and dial, gilt case with silver mounts 3. Detail of back and side of clock case 4. Front view of movement
Room location: Library Cabinet: F Shelf: 4
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Telephone Manufacturing Co. Patents Nos. 831,721 & 834,602 & 9386/62 (together with other relating material within packet)

Catalogue no: 1224
Dewey No: Subject(s): Patents
Author(s): Unknown
Total pages: 10+ Illustrations: Multiple Language(s): English Publication date: 1960/2
Editor: Publisher: The Patent Office
Dimensions: 275mm x 190mm Condition: Generally good, some stains and tears
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Notes:
The papers are contained within an envelope (375mm x 150mm) addressed to J.K.Langham, Esq., Patent Department, Telephone Manufacturing Co. Ltd., Hollingsworth Works, Martell Road, West Dulwich, London, S.E.21. (This address crossed out and replaced by Mr W.H.Poole, Hubbard Road, Dulwich) Sent by: A.A.Thornton & Co., Chartered Patent Agents, Northumberland House, 303/306 High Holborn, London, W.C.!. The following papers are contained within envelope:
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Patent Specification 202,516. An Electric Striking and Chiming Apparatus, Controlled by an Electrically Wound, Spring Driven Device

Catalogue no: 1221
Dewey No: Subject(s): Patents
Author(s): Albert George Elam, Maurice Sanders
Total pages: 7 Illustrations: 2 fold outs Language(s): English Publication date: 1922
Editor: Publisher: Patent Office
Dimensions: 280mm x 190mm Condition: Cover missing, some tears
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Notes:
There are four parts to this entry as follows; 1. Standard Patent form, the relevant number, names and description filled in in ink, dated 25th August, 1922 2. Provisional and Complete Specification with fold out diagrams (7 diagrams) 3. 4 page Leaflet promoting "A New System of Electric Chiming and Striking Control" with printed letter from Elam's address, 1, Eade Road, Finsbury Park, London, N.4. The final page lists 10 advantages claimed by the inventors 4. Photograph of the striking apparatus
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Fabrique D'Horlogerie. B.-H. Wagner. Collin. Chateau & Fils, Successeurs

Catalogue no: 1219
Dewey No: Subject(s): Catalogues
Author(s): Unknown
Total pages: 160 Illustrations: Multiple Language(s): French Publication date: 1887
Editor: Publisher: Collin
Dimensions: 180mm x 135mm Condition: Generally good, pages yellowed, some staining
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Notes:
Full Title page as follows; Fabrique D'Horlogerie B.-H.Wagner. Fondee en 1790, Rue du Cadran Collin. Chevalier de la Legion D'Honneur Chateau & Fils, Successeurs Bureaux, Magasins et Ateliers de Paris. Rue Montmartre, 118 Usine D'Ebauches de la Combe Noiret a Foncine-Le-Haut (Jura) 1887
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