Picture: Baltimore City

The Inner Harbor Water Wheel collects trash and debris at the outfall of the Jones Falls River, intercepting it before it enters Baltimore’s Inner Harbor, the Chesapeake Bay, and the Atlantic Ocean. Since it began operating, in May 2014, the water wheel has removed over 250 tons of trash from Baltimore’s waterways.

The machine funnels debris using two long booms and lifts it onto a wide conveyor belt. The refuse is then deposited in a dumpster on a separate platform. The wheel powers a conveyor, which lifts the trash from the river. When the current isn’t going quickly enough, the solar-powered pumps below the wheel push up water and get it spinning again.

The water wheel is part of the Waterfront Partnership’s Healthy Harbor Initiative, which aims to restore Baltimore’s Inner Harbor, making it swimmable by 2020. A second wheel is being crowdfunded.

See & read more:  1 / 2 / 3 / 4. Thanks to Tim Joye.

Related: Boat Mills

A demonstration of how water power may be used efficiently even on a very small scale is the water-powered fire alarm. The device is still for sale today. Buildings protected by sprinkler systems often have outside alarm bells that are activated by very small Pelton turbines on the other side of the wall.

The hydro-mechanical device signals the flow of water in an automatic sprinkler system. The main flow of water lifts a valve that sends a small amount of water to the little turbine, sounding the bell. The great advantage for fire protection is that the system works independent of electricity.

Picture: a water-powered fire alarm. Source: The Reliable Automatic Sprinkler Co. Via The Museum of Retrotechnology.

Some machines require both power and water. A household example is the washing machine. By using a small water wheel, the water that is needed to wash the clothes can also serve to power the machine. Washing machines powered by water from the town mains were quite common in the early decades of the twentieth century. The pictures show a portable American model called the “Washerette” (see it in operation in this video). It was connected to a faucet and put on the sink or bathtub so that exhaust water could be easily captured. The images were found at Smokstak.

A Floating Grain Mill on the Hwei River in China (19th/20th century). Source. Previously: “Boat mills: water powered, floating factories“.

Quoted from: The Manufacturer and Builder, Volume 0016 Issue 2 (February 1884).

The architects consider their work to be a toolbox, a starting point for thinking outside the conventional norms and recepies. They argue that decentralized services are more flexible, provide more autonomy, and are more efficient in space, energy and materials.

Antoni and Blasco present, in their own words, an equivalent to Neufert’s “Architect’s data“, the book for architects that records standardized dimensions for centralized systems. “Micromachins” is written in French but the visuals dominate.

“Micromachins”, Damien Antoni and Lydia Blasco, 2011 [download the page to get the high resolution PDF-document]. Thanks to Yann Philippe Tastevin. Update: the architects have added a new link with colour pictures and English translation.

“A spiral pump, first invented in 1746, has been recreated and tested at Windfarm Museum using lightweight and inexpensive modern materials. A 6 foot diameter wheel with 160 feet of 1-1/4 inch inside diameter flexible polyethylene pipe is able to pump 3,900 gallons of water per day to a 40 foot head with a peripheral speed of 3 feet per second.

With its low torque requirements, the pump is particularly suited to be mounted on and driven by a paddle wheel in a current of two feet per second or greater. This easily built, low maintenance spiral pump can be used to provide water without the need for fuel wherever there is a flowing stream or river. It can also be hand turned or otherwise driven to provide a low cost, efficient pump.”

Read more: 1 / 2 / 3 / 4. Thanks to Paul Nash.

See also:

• Power from the tap: water motors
• Back to Basics: Direct Hydropower

Read more: three inventors who tried to bottle the ocean’s power. Hat tip to Klaas Van Gorp.

“Boat mills: water powered, floating factories” at Low-tech Magazine. Some extra images below:

Above: Boat mill, Encyclopédie Diderot, 1751

Above: boat mill, Fausto Veranzio, 1617

Above: boat mill, Fausto Veranzio, 1617

Above: miniature of a boat mill

Above: german ship mill, 1840

One of the last authentic boat mills in France, around 1914

Above: the last ship mill on the Rhône in Lyon, France, 1894

Above: ship mill on the Tisza, Hungary (from the postcard collection of Ton Meesters)

Above: reconstruction of a ship mill in repair (1990s). Photo: Karel Broes.

More at Low-tech Magazine.

Drawing of a water powered wire mill, taken from “The Pirotechnia” by Vannoccio Biringuccio (1540). Illustration credit. For the hand powered method, see: Lost knowledge: ropes and knots.

Update January 2015: Kurt B. writes us to say that “what you are looking at is a wire drawing machine, not a rope making machine. That is, taking a large wire and drawing it through a series of ever decreasing dies (holes in the die plate) to make the wire smaller. It is powered by water. The fellow with the rope in his hands is taking up the slack on the tongs which grip the wire. Every stroke of the wheel crank pulls the wire through the die just that amount and he takes up the slack each stroke, or tries to. Here is a guy drawing wire on a much smaller scale  Home made electric jeweller wire puller  https://www.youtube.com/watch?v=sieNdwdCQug“.