WebJan 24, 2024 · The very early Bulle clocks did have a lower resistance coil, and indeed did use a series resistor to regulate the swing. However based on your Serial number, I doubt whether your clock was originally fitted withy a low resistance coil. It may be that the … WebIf the clock will not operate on 1.5 volts then there is a problem in the circuit. The circuit is extremely simple with a battery, a switch and a coil all in series. The coil has a nominal resistance of 1100 – 1200 ohms derived …

I HAVE A BULLE BATTERY CLOCK DATED 1922 IT RUNS WELL BUT …

WebJun 23, 2008 · It is fairly safe to say that most Bulle clocks will need their magnet rejuvenated before they will run properly from the normal single 1.5V cell. The first 'real' magnet material was cobalt-chrome steel, in 1921 [ 1 ] . Prior to that, carbon steel was hardened by heating and quenching, and was the basis of most magnets used. smalles5 cameras u could by

Restoration of Bulle Clock Serial Number 7221 - Horologix

WebEarly Battery Clock Parts & Restoration This file was originally part of the Gallery on the www.horologix.com website. It has been converted to pdf to facilitate downloading. Bulle Clock Serial Number 183374. (By kind permission of the owner) The clock stripped and prepared for the Ultra Sonic cleaner. The parts are roughly graded by size. WebIn 1920 Compagnee Generale des Appareils Horo-Electrique was established to commence the commercial production of the Bulle clock. During the period 1920 to 1952 production is estimated to have been some 300,000 clocks. All used the system as outlined in the original patent and over 100 different case designs were utilised. WebIt must be completely insulated from the column. It then travels a short distance in the open air to a nut on the back of the movement. The movement itself is insulated from the … song history k rock