Cog railway, Ozubnicové dráhy, Zahnradbahn
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There is no concrete evidence on who exactly was the first to invent the windmill, whether it was the Chinese or the Persians is up for debate. Regardless, both cultures began using this technology around the same time for the same purposes.
Some believe that the windmill technology was brought to Northern Europe as a result of the crusades, however their horizontal axis design rather than the vertical axis system, makes it just as likely that the Europeans discovered their windmill independently. The first existing illustrations from 1270 A.D. show blue-prints of the post mill type of windmill.
The post mill was composed of a four bladed mill mounted onto a central post, which used wooden cog-and-ring gears to covert the motion of the horizontal shaft to vertical motion that turned a grind stone. According to the Illustrated History of Wind Development, the wooden cog-and-ring gear was used by Vitruvius, an engineer of the Augustan Age, to develop the first horizontal axis water wheel.
The tower mill design is believed to have come into existence around the late 1300s, with the earliest known illustration being of a Normandy Mill between 1430 and 1440. The tower mill was made with sloping walls, a cap that could be rotated, a horizontal wind shaft, and vertical sails.
The smock mill, developed by the Dutch in 1526 based on the tower mill, is a vertical tapered tower with four to six sides topped with a cap that rotates to bring the sails into the wind. The smock mill was named from its resemblance to the smocks worn by farmers at the time.
Over the next 500 years windmills gained many diverse applications beyond just water-pumping and grinding grain including irrigation, drainage pumping, saw milling of timber, and processing tobacco, spices, cocoa, paints, and dyes.
Not a hugely dramatic landscape but I was struck by the way the low sun was sculpting the rolling hills.
Treat This 214: Friday 8th February → Thursday 14th February thanks to jus tt for fun for this source image flic.kr/p/2de62zF
Cogs Graphic Stock
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Bueno pues cuando estaba por los alrededores de mi casa cogiendo mis cielos y haciendo mis experimentos, ya que como siempre digo, no me espera nadie en esta ocasión..... puedo hacer y tomar el tiempo que necesitaba, vi que se reflejaba en este cristal y en el aluminio de una nave, estos cielos que estaban en plena ebullición, no dudé en poder transmitiros en esta pieza de color y metal como destellaba la luz y el atardecer, no le he dado ningun color, ni si quiera procesado, ya que esos tonos violetas eran propios., he cogido esta perspectiva segun me dejaba que se vieran, no es que esté torcida, no puedo enderezarlo, si lo cogía en derecho no se veían los cielos reflejados.
Música Alejandro Sanz: "Cuando nadie me ve".
The Waumbek, one of the surviving original steam engines on the Mount Washington Cog Railway, takes another load of passengers up the steep grade to the top of Mount Washington in New Hampshire. It follows one of the newer biodiesel locomotives taking a trip up the mountain at the same time.
Here is the Pikes Peak Cog railway. There are three popular ways to reach the summit. Take the cog railway, drive via Pikes Peak Hwy or hike Barr Trail.
Pikes Peak, Colorado
Snapchat: fionnluk
Shot with a Mamiya "Sekor CU 65 mm F 5.6" lens on a Canon EOS R5.
One of my attempts at the "Looking Close... on Friday" theme "Things with teeth"
My photographic goal in this B&W photo was focused on capturing the mechanical details in high contrast to emphasize the texture and function of this machine. The elements are tightly framed to emphasize the rugged construction and industrial aesthetic that highlights the interplay between the track and the toothed sprocket that drives it.
Can you guess what this is?
The answer is in the tags below.
Developed with Darktable 4.8.0.
Conversion: Color calibration= gray, Input R = +1.0
A visit to the Lion Salt Works at Northwich was very interesting. The photo shows cogs used n a conveyor system for bringing up salt brine to the salt beds. Well worth a visit.