Complication · Striking & chiming
Quarter Repeater
Partially verifiedA repeating watch that, on demand, strikes the current time to the nearest quarter hour: hours on one tone, quarters on a different tone or two-tone combination.
Definition
A repeating watch that, on demand, strikes the current time to the nearest quarter hour: hours on one tone, quarters on a different tone or two-tone combination.
Historical origin
Repeating mechanisms are generally traced to English work of the late seventeenth century, with competing attribution to Edward Barlow and Daniel Quare around 1680; the quarter repeater specifically became a standard grade of repeating complication through the eighteenth and nineteenth centuries.
How it works
See the shared repeating-watch mechanism description under Minute Repeater; a quarter repeater uses the same slide-wound rack-and-snail principle but its quarter rack only recognises four positions (quarter, half, three-quarter, full hour) rather than reading minutes individually.
Operating the slide or pusher winds a small dedicated mainspring for the striking train and simultaneously allows an hour snail (a cam with a spiral edge whose radius encodes the current hour) to be read by an hour rack, and a quarter snail to be read by a quarter rack.
Hammers, released in sequence by the racks as they fall back under spring tension, strike a bell (in pocket watches) or one or two gongs coiled around the movement (in later work), sounding a fixed number of hour blows on one tone followed by a fixed number of quarter blows in a two-tone pattern.
Pocket watch context
The most common grade of repeating pocket watch, less expensive to produce than a five-minute or minute repeater because its rack-and-snail geometry needs only four quarter-hour positions.
Wristwatch context
Very rare in wristwatches owing to the difficulty of achieving adequate gong resonance and volume in a small case; where produced, it is a high-prestige, low-volume complication.
Identification
- A slide in the case band (pocket watches) or a recessed pusher (wristwatches) that both winds the striking train and triggers it
- Distinct two-tone (ding-dong) sound for quarters, following a single-tone sequence of hour strikes
- No minute-repeating capability — this is the key distinguishing test against a five-minute or minute repeater
Servicing notes
Repeating mechanisms are complex, delicate, and easily damaged by an inexperienced hand; servicing must always go to a specialist watchmaker trained specifically in repeating and striking work, never a general repairer.
General guidance only. Complicated mechanisms should be assessed and serviced by a qualified watchmaker or clockmaker specialist, not adjusted at home.
Related photographs
No confidently matched photograph of this subject has been found yet. These photographs show a closely related record, and are not examples of the type described on this page.
Sources & references
- Chamberlain, P. M., It's About Time
- Attribution of the earliest repeating work between Barlow and Quare is disputed in the literature.
Where sources disagree, the disagreement is stated rather than resolved silently.