Search results
Results From The WOW.Com Content Network
With wood clocks, temperature is critical to conservation and preservation. Extreme heat and freezing temperature will significantly damage the wood's surface. Incorrect temperatures or uncontrolled climates of storage areas can cause rapid deterioration to wood clocks. Incorrect temperature causes the wood to expand or contract.
A grandfather clock (also a longcase clock, tall-case clock, grandfather's clock, hall clock or floor clock) is a tall, freestanding, weight-driven pendulum clock, with the pendulum held inside the tower or waist of the case. Clocks of this style are commonly 1.8–2.4 metres (6–8 feet) tall with an enclosed pendulum and weights, suspended by ...
Watches and clocks are often found stopped with the mainspring fully wound, which led to a myth that winding a spring-driven timepiece all the way up damages it. [16] Several problems can cause this type of breakdown, but it is never due to "overwinding", as timepieces are designed to handle being wound up all the way.
They may cause substantial internal bleeding or secondary injuries, such as a collapsed lung, which may not be readily evident during primary assessment. Occasionally, the object causing the injury remains in the wound as an impaled object. A stab wound from a knife or other sharp object, or a bullet wound, are examples of this type of injury.
The clock gets the energy it needs to run from temperature changes in the environment and does not need to be wound manually. It can run for years without human intervention. The mechanism is driven by a mainspring, which is wound by the expansion and contraction of liquid and gaseous ethyl chloride in an internal hermetically sealed metal ...
Anchor escapement clocks driven by a mainspring required a fusee to even out the force of the mainspring. It is a recoil escapement as mentioned above; the momentum of the pendulum pushes the escape wheel backward during part of the cycle. This causes extra wear to the movement, and applies varying force to the pendulum, causing inaccuracy.
The Seymour tall case clock in the White House, more commonly known as the Oval Office grandfather clock, is an 8-foot-10-inch (269 cm) longcase clock, made between 1795 and 1805 in Boston by John and Thomas Seymour, and has been located in the Oval Office since 1975. [1]
Johann Baptist Beha (1815 - 1898) was a prestigious Black Forest clockmaker born in Oberbränd ().He was trained by his father, the master clockmaker Vinzenz Beha (1764-1868), in his workshop where he built around 365 clocks between 1839 and 1845.