Day and time chronometer movement
AssigneeDayClocks, Inc.
InventorJohn P. Kallestad
Life of this patent
Estimating the term…
Abstract
A day clock has day, hour, and minute hands revolving continuously around a common center. It has a time adjustment knob and a day adjustment knob. When the day adjustment knob is pulled out, a set of gears are disengaged, allowing the day hand to be adjusted with that knob without affecting the other hands. Then, when the set of gears are reengaged, the time adjustment knob can be utilized to set the time of day. In order to set the day and time accurately, the user may first set the time to midnight with the time adjustment knob, pull out the day adjustment knob, set the day to a clock face line between days with that knob, push that knob back in, and then set the time to the correct time with the time adjustment knob.
Claims6
A clock comprising:
- a first hand to indicate a day of the week, the first hand mounted on a first shaft installed through a center of a face, the first shaft connected to a first day gear assembly, the first day gear assembly driven by and engaged with a second day gear assembly,
- a second hand to indicate an hour of the day, the second hand mounted on a second shaft connected to a first hour gear assembly, the second shaft installed and rotating within the first shaft, and
- a day adjustment system comprising a day adjustment knob for adjusting the first hand indicating the day of the week, the day adjustment system having two axial positions defining:
- a first mode for normal operation, wherein the first day gear assembly and a second hour gear assembly of the second shaft are engaged to link rotation of the first and second hands, and
- a second mode for adjusting the day of the week, wherein the first day gear assembly is not engaged to the second hour gear assembly and wherein operation of the knob adjusts the first hand independent of the second hand.
Dependencies are inferred from the claim text.