Longcase clock with calendar ca. 1680-85 Clockmaker: Joseph Knibb Joseph Knibb was an outstanding clockmaker in London in the generation that included such illustrious names as Fromanteel and Thomas Tompion. The familiar longcase, or grandfather, clock exemplified here was developed in England in the latter part of the seventeenth century in response to improvements in the technology of the pendulum. The older narrow-trunked case gave way to aform with wider proportions, which allowed the new, long pendulum to swing undisturbed. The gilded and matted dial of this splendid clock has a silvered-brass skeleton chapter of hours typical of Knibbs finest work. Knibbs movement goes for eight days on a single winding and strikes the hours and quarters on separate bells.. Longcase clock with calendar 205601