/fa/ - Fashion

> Is this quartz

>>13705079
>>13705086

>>13700709
After Seiko and CEH released their quartz watches, other manufacturers made an effort, if sometimes half-hearted, to introduce quartz watches of their own. In many cases, however, the approach was to take an existing watch movement and attempt to retrofit a quartz oscillator to an existing escapement and geartrain. One example was the bulova accuquartz cal 224. This was essentially a bulova accutron cal 218 with a quartz timing package attached. Rather than allowing the fork to vibrate at its natural frequency, the fork was driven by the timing package to run at 341.33Hz (the 8KHz quartz timing signal divided down by a factor of 24). The fork continued to drive the index wheel as normal, and only one wheel had to swapped out of the geartrain of the 218 to fix the ratios. 218s and 224s are largely parts-compatible. The 224 was a well-designed watch, but wasn't enough to save Bulova in the face of the cheaper quartz watches that were becoming available. Bulova eventually ended up being acquired by Citizen, with whom they had a long-standing relationship (citizen had been manufacturing tuning fork designs licensed from citizen in their hisonic and cosmotron lines for some time). The accuquartz, whose second hand advances 341 times per second, is the fastest-ticking quartz-regulated watch (as a reminder, the spring drive does not tick). The accuquartz featured a special logo on the dial in the shape of a quartz crystal; this was a design choice common to many quartz watches of the period.