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Reference Name LCNUG : 1988/1

An English longcase clock. It follows the general construction principles of John Harrison's precision wooden clocks but differs in some details.

this follows the Harrison style of a gilt decoration on a black background

typical of the region at this period

English oak construction of the frame, plates and wheels, the bars of the main frame are mortice and tenoned at 22 points; although built in a similar way to a Harrison wheel with radial grained segments let into a deep slot around the periphery of the wheel, the teeth are set alternately to either side of the width of the wheel; the pinions which have large lignum vitae rolers are set in a similar plane; this layout has the advantage in that a very wide tooth form is possible together with an extremely large diameter of the roller; all friction is therefore rolling

the escapement has pallets of lignum vitae with brass composers mounted within a brass frame; the crutch is divided to permit a fine beat adjustment; this is arranged by the vertical lever and balance arm assembly mounted to the reverse of the movement; the pendulum is impulsed through the medium of a pin fitted to the crutch; the pendulum beats seconds; the escape wheel has 60 teeth and as it completes 1 revolution in 2 minutes, the seconds dial is divided and numbered 1 to 60 twice; maintaining power is provided within the third wheel; this wheel is mounted freely on its arbor and incorporates a barrel containing a pre-loaded coil spring; the wheel is driven by a driving piece but it is prevented from reverse rotation by a ratchet and gravity pawl; the pre-loaded spring provides an ample auxiliary during winding; the movement is of an 8 day duration; the wooden winding key is very finelymade and has acquired a very high natural polish

Physical Dimensions:

  • clock height: 225 cms
  • clock length: 43.5 cms
  • clock width: 27.3 cms

Material: oak, lignum vitae, mahogany & brass

Condition: good

Quantity: 1

Completeness: complete

Period: 19th Century

Production Place: Barton On Humber, Lincolnshire, UK

Person:

clockmaker: Sutton, Robert

Commentary: An English longcase clock. It follows the general construction principles of John Harrison's precision wooden clocks but differs in some details. It has an eight day movement of English oak throughout, with large lignum vitae rollers and all wheel pivot bearings. Thus the movement requires no additional lubrication at any time. It has a grasshopper escapement with a wooden winding key. The case is mahogany, with a mahogany ebonised dial with gilt decoration on a black ground. The hood is surmounted by unique ebonised ball finials with brass embellishments, and the pediment terminates in mother of pearl and ivory paterae. The free standing ribbed columns have Corinthian capitals. Has wooden winding key

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Last updated: 21-January-2016 15:29:07

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