https://www.sardesonhorology.com/18th-century-30hr-longcase-clock-repair daily 0.75 2025-06-03 https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733063848033-DTIFT9CUINYHQKAN2VUA/IMG_9680.jpg 18th Century 30-Hr Longcase https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062862752-H87Y8V9QATQSO4ZOMJ7C/Front+View.JPG 18th Century 30-Hr Longcase Antique 18th Century long case clock after repair and alarm restoration https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062862749-M01OV3QJ0EOK360KXOCE/Top+View.JPG 18th Century 30-Hr Longcase Antique 18th Century long case clock after repair and alarm restoration https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062862755-5XC1RE0NZ6O7U0YGY8F8/Existent%2BParts%2BIn%2BOriginal%2BPosition.jpg 18th Century 30-Hr Longcase The Extant Alarm Components in Position on the Front Plate https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062862758-V6HW9VL9VKTLJSFLU5VB/Overlay+Jpeg.png 18th Century 30-Hr Longcase Alarm Design Drawing Mapping the Positions of the New and Existing Components https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062862761-JR3S8L8BP8MSIP17BSEV/Alarm%2BComponents.jpg 18th Century 30-Hr Longcase The Manufactured Alarm Components https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062862764-6DDCS7PI2MXQP0GDJO5N/Alarm+System+Side+On.JPG 18th Century 30-Hr Longcase The Complete Alarm Mechanism Reinstated https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062862768-8FUGLZE7ZRLVPTDPQO93/Broken+Escape+Tooth.JPG 18th Century 30-Hr Longcase Broken Escape Wheel Tooth https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062862772-L0P1TL7VGR6L8PBFV3HY/Escape%2BTooth%2BRepair%2B2.jpg 18th Century 30-Hr Longcase Repaired Tooth https://www.sardesonhorology.com/society-of-antiquaries-globe-clock-conservation daily 0.75 2025-06-03 https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733063848033-DTIFT9CUINYHQKAN2VUA/IMG_9680.jpg Society of Antiquaries Globe Clock https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873453-WZAMIGAMCM1R85DDM79P/BB757561-C973-47E9-A701-EDD8BECE2166.jpg Society of Antiquaries Globe Clock The clock re-installed in the library of the Society once conservation work was complete. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873457-20FGZ8JV5CCBZUUGMJTA/Back+Plate+Fully+Complete.JPG Society of Antiquaries Globe Clock The reassembled movement after cleaning and conservation work. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873460-TMR7KABKWIUP3MXQASK1/Back%2BPlate%2BFully%2BComplete.jpg Society of Antiquaries Globe Clock The fine sculptural details of the screws, spring feet and gate-locking detents, showing the quality craftsmanship that went into the original manufacture of this clock. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873463-M9C572BR14MGKIE7HW13/Screenshot+2019-07-03+at+07.59.34.png Society of Antiquaries Globe Clock FTIR Analysis carried out to identify corrosion products on the plates and ensure sufficient cleaning procedures were carried out. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873467-U6ZK3PH057P9CE4FO7SE/Bell+Spacers.JPG Society of Antiquaries Globe Clock Removable brass spacer to prevent rattle during striking due to the oversize bell mounting hole. The conservation-grade copolymer, Plastazote, was used to replace the severely degraded leather that had previously been used as a buffer pad between the bell, bell-nut and bell-stand. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873470-PDKB7R72SZZLQ1DNBN76/Movement%2BFully%2BAssembled%2B-%2BView%2B4.jpg Society of Antiquaries Globe Clock The fly (pre-treatment) with ragged replacement of fly-spring with a piece of spring-steel which was found to be very brittle. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873473-TV7PS8AILGHHWI4GROGD/Hand+Spacer.JPG Society of Antiquaries Globe Clock Multiple modern nuts and washers had been added to the motion-work to keep the loose-fitting hands in place, but were not functioning. Due to the unusual design of the motion-work mounting, a single, long cast-brass cylinder was used to replace the modern nuts and secure the hands. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873477-H68455CTRTW3G6C092I8/New%2BFly%2BSpring%2BView%2B2.jpg Society of Antiquaries Globe Clock A new fly spring was made from brass and secured with a friction-fit rather than riveting, in order not to interfere with historic material. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873480-0QVBHD5RD4EOTOR7BDXU/New%2BBottom%2BOuter%2BCase%2BScrews.jpg Society of Antiquaries Globe Clock Replacement screws for the bottom case cap. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873483-9LYBM74FNX5D8HVKWOSH/New%2BBottom%2BCase%2BScrews.jpg Society of Antiquaries Globe Clock Replacement screws for securing the bottom case section to the central cylinder. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873486-5XX5FMLJOYNLWRE9EKIR/Replacement%2BScrews.jpg Society of Antiquaries Globe Clock Replacement screws for securing the upper-middle case section to the central cylinder. The unusual design of these screws matches the extant ones that secure the lower-middle case section. All of the upper-middle section screws had been lost. https://www.sardesonhorology.com/home daily 1.0 2025-06-16 https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733063848033-DTIFT9CUINYHQKAN2VUA/IMG_9680.jpg Home https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/5fc4bd89-38bb-4fdf-93ba-135df9e31ef0/Clock+condition+surveys+and+onsite+maintenance Home - Condition surveys & onsite maintenance Condition Surveys & Onsite Maintenance https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/232ab031-c153-45af-a3bb-5cdb9f67c94b/Studio+conservation+treatment Home - Studio conservation Studio Conservation https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/0cca276a-587b-44db-8a1a-d043d3c30c5d/Education.jpg Home - education & training Education & Training 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https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733753779998-4BQM5CI065A789GJL53L/Dial+with+case+open.jpeg Example Projects Conservation of Josiah Emery No. 1107 Lever Watch https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062873453-WZAMIGAMCM1R85DDM79P/BB757561-C973-47E9-A701-EDD8BECE2166.jpg Example Projects Conservation & Documentation of the Falling Globe Clock at the Society of Antiquaries, London https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733062868734-4UTDVTLMWND1L8SQFEGG/18th+Century+Antique+Longcase+Clock Example Projects 18th Century 30-Hour Longcase Clock with Alarm Reinstatement https://www.sardesonhorology.com/contact daily 0.75 2025-06-16 https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733063848033-DTIFT9CUINYHQKAN2VUA/IMG_9680.jpg Contact https://www.sardesonhorology.com/services daily 0.75 2025-06-16 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https://www.sardesonhorology.com/emery-lever-watch daily 0.75 2025-06-03 https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733063848033-DTIFT9CUINYHQKAN2VUA/IMG_9680.jpg Josiah Emery No.1107 Lever Watch Conservation https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/74f4e70f-e1ff-48fb-9ad2-820a2768fd1f/IMG_5909.jpg Josiah Emery No.1107 Lever Watch Conservation Front view of the watch in the case https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733753775830-MY09AWOB5I06RDOQSXA6/Caseback.jpeg Josiah Emery No.1107 Lever Watch Conservation The back of the case, chased and engraved with the Garter & Coronet of the Duke of Richmond, and the monogram RA https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733753775415-S2PKD0TFK22A43TX0JBD/Back+View+Cased.jpeg Josiah Emery No.1107 Lever Watch Conservation Back view of the watch in the case, with the dustcap removed, prior to conservation treatment https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733673430119-43H9JW3QX5V2CVJ6SZD7/IMG_5871.jpg Josiah Emery No.1107 Lever Watch Conservation The underdial work https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733753777302-OXMIZLVLR8IW3K9VIMRO/Dustcap.jpeg Josiah Emery No.1107 Lever Watch Conservation The dustcover https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733753777720-TY8PINACJCTL013HJI6B/Dustcap+Verso.jpeg Josiah Emery No.1107 Lever Watch Conservation The underside of the dustcover, revealing the ingenious rotating ‘bayonet band’ securing mechanism https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733754193144-EK9HPKPE7SCXRHJ9E5IC/Wheels+in+place.jpeg Josiah Emery No.1107 Lever Watch Conservation The gear trains in place with the potence plate removed https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733672432784-7TP0TT2DU7EHSJH6HT7Q/IMG_5895.jpg Josiah Emery No.1107 Lever Watch Conservation Gilt balance with bimetallic S-compensation and gold compensation screws, blued steel helical balance spring https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733673321369-4AFSECDUSD7I75GYTFFH/Regulating+index.jpeg Josiah Emery No.1107 Lever Watch Conservation The polished steel regulating index with two pins to embrace the first coil of the balance spring https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733672513973-JVXNIHF4B7ZQDS6WW4KM/Lever.jpg Josiah Emery No.1107 Lever Watch Conservation Steel lever with jewelled pallets https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733673474335-OZIB0VUIJY90HBQ414CB/Safety+Dart.jpg Josiah Emery No.1107 Lever Watch Conservation The gold safety dart https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733673629337-FXUSEELZYRSXDESUOIEE/Escape+Wheel.jpg Josiah Emery No.1107 Lever Watch Conservation The steel escape wheel https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733672872558-7NQUWW7IUZOFGWYLH4NA/Escape+Teeth.jpg Josiah Emery No.1107 Lever Watch Conservation Oil-retaining notches at the tooth tips of the steel escape wheel https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733673669842-8P00IJIQI2FHX4SS1U98/Escape+Wheel+Pivot.jpg Josiah Emery No.1107 Lever Watch Conservation The escape wheel pinion and pivot https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/220cd937-9b29-4bcf-8ed7-c6363455a828/Rust+Removal+from+watch+hands.JPG Josiah Emery No.1107 Lever Watch Conservation Delicate components such as hands were fixed to brass blocks with temporary conservation adhesive (Paraloid B72) to allow them to be worked on without risk of bending/snapping. (Photo by Su Fullwood) https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/4dbe2615-be2c-48e1-8b82-5b550acb5330/Screw+in+custom+brass+collet.jpeg Josiah Emery No.1107 Lever Watch Conservation Custom brass collets were made to facilitate the secure holding of screws without risking damage to the threads. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/888ac0e0-c86d-490e-ae3e-f4e1cf672ab9/balance+spring+stud+cock+screw.jpg Josiah Emery No.1107 Lever Watch Conservation - Make it stand out The balance spring stud cock screw was one of the most significantly corroded components. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/184f2264-710b-4a47-af11-8b364da59e47/potence+plate+after+reassembly.jpeg Josiah Emery No.1107 Lever Watch Conservation - Make it stand out The watch fully reassembled after treatment, showing the balance spring stud cock screw in situ - approximately 50% of the historic finish and blueing of the component has been saved. https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733755494096-F377N5CQ0JM9XYG4PWOV/Balance+stop+spring+screw+before.jpeg Josiah Emery No.1107 Lever Watch Conservation Before https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733755493744-V99PD3TCIQUQ8ZT07F3H/Balance+stop+spring+screw+after.jpeg Josiah Emery No.1107 Lever Watch Conservation After https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733755492821-OIJT0WOGQJ5SWEOMC6M2/Balance+stop+lever+before.jpg Josiah Emery No.1107 Lever Watch Conservation Before https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733755492840-7IYS8NSALN1TT2M4Z7ZM/balance+stop+lever+after.jpg Josiah Emery No.1107 Lever Watch Conservation After https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733755497097-V3GVPVUZ7D90ME8CG5PJ/Hour+Hand+Before.jpeg Josiah Emery No.1107 Lever Watch Conservation Before https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733755496763-7X3T5Q84LQ6ATPZMEN30/Hour+Hand+After.jpeg Josiah Emery No.1107 Lever Watch Conservation After https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1734128056082-DCQCFLAK46158W40FAVZ/Fusee%252BChain%252BBefore.jpg Josiah Emery No.1107 Lever Watch Conservation Before https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1734127687684-IWOMQ62Y4JZFXZ3SF2VA/Fusee%252BChain%252BAfter.jpg Josiah Emery No.1107 Lever Watch Conservation After https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733755500986-61EDW185FIXWQBKBCKY9/Quarter+Hammer+Spring+Before.jpg Josiah Emery No.1107 Lever Watch Conservation Before https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1734128206443-BO4HHDDH7PZKAJ6TV3SJ/Quarter%25252BHammer%25252BSpring%25252BAfter.jpg Josiah Emery No.1107 Lever Watch Conservation After https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733755498724-TCYFR6T4OC09OBU3TAIT/Hour+Wheel+Bridge+Before.jpeg Josiah Emery No.1107 Lever Watch Conservation Before https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733755497963-EE4FC26EAJAIAZ3Q2CPK/Hour+Wheel+Bridge+After.jpeg Josiah Emery No.1107 Lever Watch Conservation After https://www.sardesonhorology.com/bowes-swan-study-week daily 0.75 2025-06-03 https://images.squarespace-cdn.com/content/v1/674c70c7cd4a1b3a640ccdf3/1733063848033-DTIFT9CUINYHQKAN2VUA/IMG_9680.jpg Bowes Swan Study Week