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Wind-up toys – often as a simple mechanical motor, or to create automata. These may be either key-wound, as were many 20th-century model trains, or a simpler pullback motor. Most photographic camera leaf shutters use a clockwork mechanism not unlike that of wristwatches to time the opening and closing of the shutter blades.
A gravity escapement uses a small weight or a weak spring to give an impulse directly to the pendulum. The earliest form consisted of two arms which were pivoted very close to the suspension spring of the pendulum with one arm on each side of the pendulum. Each arm carried a small deadbeat pallet with an angled plane leading to it.
Automata built for the sake of art, amusement, and simulation have been described since antiquity, in cases such as Heron of Alexandria designing clockwork birds during the Hellenistic Period. [2] Leonardo da Vinci is frequently credited with constructing a mechanical lion , which he presented to King Francois I in Lyon in 1515.
While the device may have struggled with inaccuracies, due to the triangular teeth being hand-made, the calculations used and technology implemented to create the elliptical paths of the planets and retrograde motion of the Moon and Mars, by using a clockwork-type gear train with the addition of a pin-and-slot epicyclic mechanism, predated that ...
A pullback motor (also pull back, pull back and go or pull-back) is a simple clockwork motor used in toy cars. A patent for them was granted to Bertrand 'Fred' Francis in 1952 as a keyless clockwork motor. [1] [2] Pulling the car backward (hence the name) winds up an internal spiral spring; a flat spiral rather than a helical coil spring. When ...
Monumental conical pendulum clock by Farcot, 1878. A conical pendulum consists of a weight (or bob) fixed on the end of a string or rod suspended from a pivot.Its construction is similar to an ordinary pendulum; however, instead of swinging back and forth along a circular arc, the bob of a conical pendulum moves at a constant speed in a circle or ellipse with the string (or rod) tracing out a ...
In 1918, American Flyer introduced its first electric train, an O gauge model that was simply a windup model with an electric motor in place of the clockwork motor. This was a common practice at the time. The same year, William Coleman died and his son, William Ogden Coleman, Jr., took over the company. At that time the factory and ...
The clockwork universe is a concept which compares the universe to a mechanical clock. It continues ticking along, as a perfect machine, with its gears governed by the laws of physics , making every aspect of the machine predictable.