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In 1888 the Dueber Watch Case Company operating in Cincinnati from 1864 bought the Hampden Watch Company of New York, in operation since 1877. Dueber moved them both to Canton, Ohio, where Hampden used the Dueber cases until the companies merged in 1923. Pocket watch sales declined after World War I, and the business closed in 1927.
An exploded-view drawing is a diagram, picture, schematic or technical drawing of an object, that shows the relationship or order of assembly of various parts. [ 1 ] It shows the components of an object slightly separated by distance, or suspended in surrounding space in the case of a three- dimensional exploded diagram.
A pocket watch is a watch that is made to be carried in a pocket, as opposed to a wristwatch, which is strapped to the wrist. They were the most common type of watch from their development in the 16th century until wristwatches became popular after World War I during which a transitional design, trench watches , were used by the military.
The core of the keyless mechanism is a gear on the watch's winding stem, the clutch (or castle wheel in Britain), with two sets of axial gear teeth on it, which slides in and out. When the stem is pushed in, a lever slides the clutch out, and the outer set of teeth engages a small wheel train which turns the mainspring arbor, winding the ...
Nelsonic Industries is an American electronics manufacturing and development company that operated from Long Island City, Queens, New York City [2] in the early 1980s and throughout the 1990s when it was acquired by the watch-manufacturer, M.Z. Berger.
Ingersoll bought the Trenton Watch Company in 1908, and the bankrupt New England Watch Company in Waterbury, Connecticut, for $76,000 on November 25, 1914. [2] By 1916, the company was producing 16,000 watches per day in 10 models. That year also saw the introduction of a so-called "night design", the Radiolite featuring a luminous radium dial. [3]
A rack and pinion has roughly the same purpose as a worm gear with a rack replacing the gear, in that both convert torque to linear force. However the rack and pinion generally provides higher linear speed — since a full turn of the pinion displaces the rack by an amount equal to the pinion's pitch circle whereas a full rotation of the worm screw only displaces the rack by one tooth width.