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on his 'Aim
Correction' system for improving the accuracy of naval gunnery. Cooke & Sons supplied the optical components for the system which consisted of a gyroscopically stabilised rangefinder where successive readings of a moving target were mechanically integrated to give a prediction of
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Dennis Taylor modified his three element lens design for photographic purposes, patenting his work in 1905 and 1906. This 'Cooke
Triplet' lens design was an improvement on most camera lenses of the time though it was in competition with the 1902 Zeiss
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acquired a controlling stake in the company. During World War I about half of the factory's capacity was turned over to contracts for large naval rangefinders from the main contractor,
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569:"British physicist and winner of the 1904 Novel Prize for Physics Lord Rayleigh (3rd Baron Rayleigh John William Strutt) discovered the first, simplest kind of AR coating in 1886"
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to be sent to India. On arrival they were found to be very well made except that the circle division was faulty. They were returned to York and redivided. By 1870 The
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glass element. This design was called a 'photo-visual' design and used for both visual and photographic astronomy. Taylor became
Optical Manager at the firm in 1893.
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design. In 1904 Taylor discovered that a tarnished surface layer could reduce reflections from glass surfaces. Although this effect had been discovered by
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in Paris and won a First Class Medal for a 7.5 inch equatorial refractor. By 1855 Thomas Cooke had built a factory at
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at a time when most instrument makers specialised in making either the optical or mechanical components.
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The Fry 8-inch-aperture refracting telescope, manufactured by Thomas Cooke in the 1860s, at the
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Instruments from T. Cooke & Sons at the
Hellenic Archive of Scientific Instruments
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At the Sign of the Orrery: The
Origins of the Firm of Cooke, Troughton and Simms, Ltd
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shows that Cooke employed four men and an apprentice. In 1855 Cooke exhibited at the
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203:. Cooke & Sons also provided a 12 inch theodolite for the construction of the
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In 1864 Cooke undertook his first order for surveying equipment when he built 16
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Vickers
Instruments - Borthwick Institute for Archives, The University of York
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Following the death of Cooke in 1868, the business was continued by his sons.
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for his own use. A notable instrument made at this time was a 4.5 inch
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Taylor, E. Wilfred; Wilson, J. Simms; Maxwell, P. D. Scott.
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Six lightweight theodolites were made for Scott's ill-fated
226:, invented a three element lens design incorporating a new
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used Cooke levels for the primary survey in preference to
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In 1914, a new factory was built in
Bishophill. In 1915
159:. Cooke himself made the whole instrument including the
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was an
English instrument-making firm, headquartered in
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The company archives are held at the
University of York
306:- contemporary Irish telescope company, founded in 1833
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in 1886 the use of lens coatings was not widely known.
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Focus falls on
Vickers Instruments (From York Press)
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415:Monthly Notices of the Royal Astronomical Society
193:products as they considered them to be superior.
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261:for the most part chose the simpler and cheaper
640:(About the merger with Troughton & Simms.)
669:Manufacturing companies of the United Kingdom
252:With war looming the firm began to work with
144:In 1837 Cooke leased a shop at 50 Stonegate,
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207:. Observatory domes were also made using
45:merged with Troughton & Simms in 1922
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507:: CS1 maint: archived copy as title (
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199:The firm built the clock face on the
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257:range and bearing. In the event the
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332:(Not dated, no publisher given.)
138:University of London Observatory
679:Defunct companies based in York
281:In 1922 Vickers merged it with
674:1837 establishments in England
598:Instrument Makers to the World
549:Instrument Makers to the World
526:Instrument Makers to the World
449:Instrument Makers to the World
369:Instrument Makers to the World
346:Instrument Makers to the World
97:Optical lenses and instruments
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287:Cooke, Troughton & Simms
53:Cooke, Troughton & Simms
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424:Royal Astronomical Society
211:including in 1883 one for
201:Darlington clock tower
172:Exposition Universelle
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283:Troughton & Simms
235:Terra Nova Expedition
213:Greenwich Observatory
191:Troughton & Simms
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224:chromatic aberration
222:, working to reduce
205:Forth Railway Bridge
157:refracting telescope
120:. It was founded by
150:screw-cutting lathe
114:T. Cooke & Sons
103:Number of employees
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19:T. Cooke & Sons
575:. 15 December 2018
489:on 3 February 2011
406:Pritchard, Charles
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277:Barr & Stroud
259:British Admiralty
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27:Instrument making
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485:. Archived from
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410:"Thomas Cooke"
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632:. Retrieved
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491:. Retrieved
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299:Cooke Optics
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209:papier-maché
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122:Thomas Cooke
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58:Headquarters
36:Thomas Cooke
15:
634:15 November
630:: 403. 1922
430:15 November
183:theodolites
73:Area served
663:Categories
600:Pp. 69-75
579:19 January
551:Pp. 66-68
528:Pp. 59-61
493:7 February
451:Pp. 54-58
422:. London:
371:Pp. 50-51
311:References
176:Bishophill
154:equatorial
83:Key people
426:: 130–135
266:predictor
178:in York.
166:The 1851
124:by 1837.
77:Worldwide
50:Successor
503:cite web
408:(1868).
293:See also
285:to form
218:In 1892
94:Products
24:Industry
618:"Notes"
273:Vickers
128:History
32:Founder
604:
555:
532:
455:
375:
352:
348:P. 50
263:Dreyer
243:Tessar
228:Schott
168:census
636:2015
602:ISBN
581:2021
553:ISBN
530:ISBN
509:link
495:2016
453:ISBN
432:2015
373:ISBN
350:ISBN
146:York
118:York
62:York
42:Fate
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505:}}
501:{{
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66:UK
64:,
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
