LOT 50 A very rare and interesting third quarter of the 16th century German spring driven alarm timepiece movement Mounted on a wooden plinth with applied 19th century inventory label 392/U
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Mounted on a wooden plinth with applied 19th century inventory label 392/U The movement: With iron plates 3.5cms by 12cms (1 and 3/8ths of a inch wide by 4 and 3/4s of an inch) high, united at the top and bottom by similar plates running from front to back, the alarm train mounted on a sub plate affixed to the backplate by three pinned square-section pillars, the going train with early 'Burgundian' type of brass-lipped spring barrel with cap secured by four pins, gut line to a squat brass fusee of seven turns and visible ratchet work, the iron great wheel driving a further two iron wheels with three crossings and a brass 'scape wheel to an iron unsprung balance above, regulation is effected by sliding a pivoted brass arm having traces of a pair of banking pins mounted upon it, these to govern the swing of the balance against a notched regulation arc mounted on the top plate. The top and bottom potances, and all other cocks on the movement, made in brass with distinctive, similarly shaped trefoil feet. The alarm train driven by an open steel spring held in place by three steel pins, with vertical crown wheel activating the hammer arbor, the steel head sitting inside a shallow bell mounted on a stepped horizontal bell stand. The dial: the (later silver?) chapter ring with outer single line border framing engraved Roman numerals and an inner quarter hour track, secured by a single screw at XII, the time read by a shaped brass hand (the root of the hand following the same form as the movement cocks), with brass Arabic alarm setting hand to the centre, mounted on a rectangular iron panel with additional securing screw to the bottom edge driving directly into the base of the frontplate, the top of the dial plate with shaped cresting with pierced centre section to allow access to the alarm on/off lever, and to allow the balance to protrude over the chapter ring. The stand: the movement sits on a shaped wooden block, and appears to have done so for many years - the rear of the block carries two (one pasted over the other) 19th century paper labels, the lowermost octagonal with a printed border, the uppermost circular with a printed border and the inventory number (?) 392/U in sepia ink. 16.5cms (6.5ins) high
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伦敦新邦德街
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