23429 Preisdatenbank Los(e) gefunden, die Ihrer Suche entsprechen
23429 Lose gefunden, die zu Ihrer Suche passen. Abonnieren Sie die Preisdatenbank, um sofortigen Zugriff auf alle Dienstleistungen der Preisdatenbank zu haben.
Preisdatenbank abonnieren- Liste
- Galerie
-
23429 Los(e)/Seite
Los 142
An early 19th century boxwood-strung mahogany stick barometerJ. MAVER, 281 HIGH HOLBORN, LONDONThe broken architectural pediment centred by a brass urn over an opening door, visible tube and flat-fronted turned cistern, the signed silvered dial with manual vernier and seven weather predictions, flanked by an alcohol thermometer, 14cm wide x 5.5cm deep x 97.5cm high (5 1/2in wide x 2in deep x 38in high)For further information on this lot please visit Bonhams.com
Los 193
A Negretti & Zambra, London barograph with mercury tube thermometer and ink bottle. The five bevelled glass oak case with chart drawer complete with charts and instruction leaflet, 21cm high x 36cm wide x 22cm deepNot tested for working condition or accuracy. Case a little grubby and dry, would benefit from a good clean and polish.
Los 815
A Late Victorian Oak Cased Stick Barometer and Thermometer, by J.H Steward Ltd, 406 Strand, London, with white opaque glass scales and vernier, mercury thermometer, contained in oak case with carved cartouche and swag pattern cresting, and floral carved cistern cover, inset with inscribed silver plaque, dated January 11th 1935, 44ins high
Los 5030
Victorian mahogany cased mercury wheel barometer by A Rizzi, Leeds,c 1860,with a swan's neck pediment and round base, long mercury box thermometer, 8� silvered register, hygrometer and level, steel indicating hand and brass recording hand with recording button, mercury present in syphon tube.Dimensions: Height: 94cm Condition Report:Pediment damaged and syphon tube inverted.
Los 186B
Early 20th century aneroid barometer c1910 in a scroll carved mahogany case with a silvered dial, brass bezel and flat glass, reading barometric pressure from 28-31 inches with weather predictions, steel indicating hand and brass recording hand, with a surface mounted boxed mercury thermometer recording the ambient temperature in degrees Fahrenheit. Dimensions: Height: 62cm
Los 181
A LATE VICTORIAN OAK CASED ADMIRAL FITZROY BAROMETER the carved oak case enclosing a 10' calibrated dial inscribed IMPROVED TORRICELL above glazed door enclosing two plaques reading Admiral Fitzroy's remarks, with thermometer and storm tube, 118cm high Condition Report : generally good condition Condition reports are offered as a guide only and we highly recommend inspecting (where possible) any lot to satisfy yourself as to its condition.
Los 182
A MAHOGANY STICK BAROMETER/THERMOMETER the silvered register signed 'J Blatt Brighton', 99cm high Condition Report : very good condition, no faults Condition reports are offered as a guide only and we highly recommend inspecting (where possible) any lot to satisfy yourself as to its condition.
Los 114
A rare early 19th century kingwood-banded mahogany wheel barometer with timepieceJ Saldarini, Peterborough, the timepiece by William Terry, London, No.285The swan neck pediment and acorn finial over a waisted body set with a hygrometer, detachable mercury thermometer, 4.25-inch white enamel Roman dial with matching blued steel spade hands, signed level and 12-inch silvered barometer dial offering seven weather predictions within its 28–31-inch scale divided to 100ths of an inch, with blued steel hand and brass recording pointer. The timepiece movement with signed circular plates, chain fusee to a tic-tac escapement and silk suspended 3inch pendulum. 1.26m (4ft 2ins) Footnotes:Provenance:Sotheby's New Bond Street, 7th June 1984, lot 183.This lot is subject to the following lot symbols: Y ФY Subject to CITES regulations when exporting items outside of the EU, see clause 13.Ф This lot contains or is made of ivory and cannot be imported into the USA or any country within the EU.For further information on this lot please visit Bonhams.com
Los 19
A fine and rare late 19th century English gilt brass travel clock with compass, barometer and calendar, in the original travel case with original keyHunt & Roskell 156 New Bond Street LondonThe gilt case with stylised Greek key handle above a recessed magnetic compass with engraved 16-point silvered dial flanked by knurled finials above polished columns on proud plinths, the top, front and side panels all finely engine turned, the rear door polished and set with an aneroid barometer and mercury thermometer, the time dial with polished Roman chapter ring and Breguet style hands over subsidiary dials for day and date (lettering worn), all raised on squat button feet. The two spring barrel movement with platform escapement, the backplate engraved Hunt & Roskell 156 New Bond St London. Ticking and striking on a blued steel gong with original long handled winding key. Together with the original leather covered, silk-and-velvet lined travel case with sliding protective front panel, signed to the inner lid with a crown and Hunt & Roskell. Late Storr & Mortimer. Chronometer & Watchmakers to the Queen and Royal Family. 156 New Bond Street. 17cms (6.5 ins) highFor further information on this lot please visit Bonhams.com
Los 64
A fine and rare mid-late 19th century mahogany floor standing regulator with four-legged gravity escapementThe wide moulded cornice over long glazed door with internal dust beading and twin locks, the sides similarly glazed, the solid backboard with additional applied panel to carry the heavy steel plate on which the pendulum and escapement assembly are mounted, the board further set with a mercury ivory thermometer, all on a moulded base. The unsigned 10.25inch silvered dial with outer Arabic minute band framing the Roman hour and Arabic subsidiary seconds dials (with Observatory marks), with blued steel hands. The weight-driven movement with substantial waisted skeletonised plates united by four heavy pillars, Harrison's maintaining power and high-count pinions throughout, mounted on a pair of very substantial brass brackets, a central contrate wheel driving a vertical eight-inch arbor terminating in a bevel gear running to the four-legged escapement with pierced vanes and twin arms, the heavy zinc and steel compensated pendulum with large facetted bob reading against an engraved silvered beat scale. Driven by a tall cylindrical brass weight weighing 9kg (approximately 19.8lbs) suspended via a pulley set into the roof of the case. Together with a crank winding key and a door key with brass ring engraved with the number 4. 2.12m (6ft 11ins) high.Footnotes:Gravity, also including Remontoire, escapements are defined as escapements which instead of relying on the going train or weights to impulse the pendulum, are instead reliant on a small, lifted weight or bent spring, which provides impulse with every pendulum beat. Theoretically, this provides a constant impulse to the pendulum. The first such escapement, a Remontoire, was made by Alexander Cumming in 1774, originally described in his 1766 book The Elements of Clock and Watch-Work, Adapted to Practice. The main benefit of this escapement, as Cumming saw it, was that the escapement could function without oil on the pallets, which should reduce the error caused by old or dirty lubrication. Cumming explained further that 'these pallets, do also correct all the irregularities of action in the main spring, wheels and pinions; or any other irregularity that can possibly happen in the movement, from any cause whatever' which was the desired result for a gravity escapement. Cumming's escapement features some hallmarks of gravity escapements, including weighted arms and pins which link the escapement's impulse to the pendulum.Thomas Mudge also produced a similar escapement around this time, which was used in his marine clock. The main difference was Mudge positioned the weights on the arms of the pallet, rather than having them separate, as in Cumming's design. Mudge's escapement was criticised as being too delicate; a small change to the force of the train would cause the escapement to trip. Even if it wasn't tripping, it has been noted that the escapement had a tendency to half-unlock after fully unlocking, meaning that the pendulum would sometimes get an extra partial impulse. Not only did this mean the escapement was prone to a mutable rate, but circular error was also increased.Inspired by Cumming's book, both Edward Massey and George Prior separately devised Remontoire escapements, in 1803 and 1809 respectively.Between 1809-1811, William Hardy, at the behest of the then Astronomer Royal Dr. Nevil Maskelyne, developed a new escapement for the Board of Ordnance which he described as a spring pallet escapement. This escapement was to be used in an astronomical regulator, to supplement Troughton's ten-foot Mural Circle. Hardy's escapement was similar to Cumming's, however, Hardy's relied on a spring which unlocked the escapement with every pendulum swing. As with the Cumming's escapement, Hardy's escapement did not require oiling. Interestingly, Alexander Cumming was consulted by the Board of Ordnance regarding the practicality of Hardy's design, Dr. Maskelyne having since died. Hardy was eventually awarded £200 for the regulator and received several requests for similar regulators. Thomas Reid, around 1811, also developed a spring pallet Remontoire escapement, though slight modifications to the pallet faces meant that Reid's escapement could function for longer than the 15-year lifespan of Hardy's pallets. One of the regulators Reid made with this escapement was for the Astronomical Institution of Edinburgh, which later became the Royal Observatory of Edinburgh.The final British precursor to Dent and Denison's gravity escapements was created by James Mackenzie Bloxam. Bloxam's escapement relied on one large locking wheel with nine teeth and a much smaller lifting/unlocking centre wheel, also with nine teeth. This escapement was an improved, simpler version of previous gravity escapements and avoided the issues of tripping and circular error that were present in Mudge's escapement. The main drawback to this escapement was that it demanded a finely finished, high quality movement with a high pinion leaf count and an absolute minimum of weight to run. In one of Bloxham's clocks which used this escapement, the pinions went as high as 18 leaves. Such clocks would necessitate a high level of skill to make and the cost of such a clock would be very high, making the escapement largely impractical for most uses.Edmund Beckett Denison, later Lord Grimthorpe, used these past escapements, especially Bloxam's, to create a more robust gravity escapement. The four-legged gravity escapement owes a debt to Bloxam's design, though it is different in a few key ways. First, the number of teeth on the locking wheel was reduced to four, the teeth were now called 'legs', and the lifting centre wheel became four centre pins which protruded on both sides of the locking wheel. Another major difference was the escapement was distributed between two planes: one pallet in front, and the other pallet in back with the escape wheel and pins between. This escapement avoids the risks of tripping and circular error and is easier to manufacture then many of the above escapements. Additionally, Denison's escapement did not require a high pinion leaf count to work and benefitted from a large driving weight. Denison would later develop another escapement on this two-plane principle, which would rely on two three-legged locking wheels, connected by three unlocking pins. Denison's design for the four-legged gravity escapement, first described in his Rudimentary Treatise on Clocks, Watches, & Bells For Public Purposes of 1850, was manufactured by James Brock of George Street, Portman Square shortly after. The four-legged gravity escapement was recommended for use in astronomical regulators and similar sized clocks, whereas the double three-legged gravity escapement was usually reserved for turret clocks, most noticeably the Great Clock at Westminster. There are some exceptions to this rule; the turret clocks at both Chichester and Salisbury cathedrals use four-legged gravity escapements. Both cathedrals are also auditory only; there are no dials for the movements to drive, thus the more robust double three-legged gravity escapement is not necessary, and a four-legged escapement can be used. Additionally, both clocks hav... This lot is subject to the following lot symbols: TP Y ФTP Lot will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.Y Subject to CITES regulations when exporting items outside of the EU, see clause 13.Ф This lot contains or is made of ivory and cannot be imported into the USA or any country within the EU.For further information on this lot please visit Bonhams.com
Los 1028
A 19TH CENTURY GILT BRASS AND ROUGE MARBLE MANTEL CLOCK with folding handle enclosing a silvered combined thermometer and compass above a 4" gilt brass dial with silvered Arabic numerals and gilt raised flower spray centre fronting an eight-day spring driven movement striking the hours and half hours on a bell, with balance wheel escapement.28cm high handle up
Los 900
A LATE 19TH CENTURY FRENCH ORMOLU AND ROUGE MARBLE DESK COMPENDIUM CARRIAGE CLOCK having matching oval clock and barometer with gilt engraved masked enamel dials, the reverse with a glazed back to the clock revealing an eight-day spring driven movement with original lever escapement and a calibrated silvered thermometer behind the barometer mounted on a shaped rouge marble base, retailed by 'BRIERE, RUE DU PORT, CHERBOURG'14cm high
Los 907
A 19TH CENTURY FIGURED MAHOGANY 6” WHEEL BAROMETER SIGNED DOLLAND, LONDON The case with caddy top and ebony string inlay fitted silvered calibrated dials and mercury glass tube95.5cm highthe barometer has its original tube, and the mercury has air bubbles, the case has been cleaned and repolished, a small piece of timber missing from the bottom, and the silvered dials and thermometer are in good condition. Minor splits to the veneer at the top.
Loading...-
23429 Los(e)/Seite