Apart from the standard movements,14 in the first thirty years of the
nineteenth century precise chronometers are madę - astronomical clocks
and regulators, for example the longcase clock signed: “J. Epf. Frolland
a Wilna”19 20 or Joachim Sawicki’s clock from Yilnius University (ill. 3, 4,
3. Silvered,
engraved dial
of Johann Efraim
Frolland's regulator,
around 1810-1816
Klaipeda, Klaipedos
Laikrodźiy Muziejus
(Phot. Stanisław
Stefan Mieleszkiewicz)
19 i.e. of good ąuality of indication, usually with a datę marker and a seconds-dial, a single beli
striking even hours and half-hours, without quarter strike and ąuarter repeater, without additional
indicators, chimes or sophisticated calendar.
20 Originally from Astronomical Observatory of Vilnius University, in 1945 bought from
J. Oskierka to the collection of the Klaipeda Museum of Clocks and Watches (Klaipeda, Klaipedos
Laikrodźig Muziejus, no. inv. KLM 2223), eąuipped with an English type movement with Graham
escapement and compensating pendulum (a Steel rod and a brass rod riveted together) with an
upper joint, allowing for correcting the deviation from the proper position without the need to
level the case. The clock had no strike; its engraved sąuare dial (32.7 x 32.6 cm) was silver-plated.
Judging from the case shape and Frolland’s death datę, the time of the clock’s production can be
determined for 1810-1816.
99
nineteenth century precise chronometers are madę - astronomical clocks
and regulators, for example the longcase clock signed: “J. Epf. Frolland
a Wilna”19 20 or Joachim Sawicki’s clock from Yilnius University (ill. 3, 4,
3. Silvered,
engraved dial
of Johann Efraim
Frolland's regulator,
around 1810-1816
Klaipeda, Klaipedos
Laikrodźiy Muziejus
(Phot. Stanisław
Stefan Mieleszkiewicz)
19 i.e. of good ąuality of indication, usually with a datę marker and a seconds-dial, a single beli
striking even hours and half-hours, without quarter strike and ąuarter repeater, without additional
indicators, chimes or sophisticated calendar.
20 Originally from Astronomical Observatory of Vilnius University, in 1945 bought from
J. Oskierka to the collection of the Klaipeda Museum of Clocks and Watches (Klaipeda, Klaipedos
Laikrodźig Muziejus, no. inv. KLM 2223), eąuipped with an English type movement with Graham
escapement and compensating pendulum (a Steel rod and a brass rod riveted together) with an
upper joint, allowing for correcting the deviation from the proper position without the need to
level the case. The clock had no strike; its engraved sąuare dial (32.7 x 32.6 cm) was silver-plated.
Judging from the case shape and Frolland’s death datę, the time of the clock’s production can be
determined for 1810-1816.
99