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The Rain Bird horizontal action impact-drive sprinkler head was recognized as a historic landmark of agricultural engineering in 1990 by the American Society of Agricultural and Biological Engineers. [3] This invention led to sprinkler irrigation development that currently exceeds 50,000,000 acres (78,000 sq mi; 200,000 km 2) worldwide.
In the late 1960s, spray bottles with trigger-style actuators appeared and quickly became popular, as this design was less fatiguing to use. The original pump-style bottle remained more popular for applications like non- aerosol deodorants , where size was a factor and repeated pumps were not required.
Copper Leader Head at Penn's Quadrangle, Philadelphia 1894 Copper Leader at Shofuso Japanese House and Garden in Philadelphia. The purpose of a leader head is to help transfer excess water from the roof onto downspouts, thus preventing the gutters from overflowing and water washing over the walls, which is a common occurrence in areas susceptible to heavy rain cycles.
The Rain Bird in Native American legend was a bird who brought rain. The Rain Bird was known by coastal Native Americans as the bringer of life. The reason behind it was that Rain, or the bringer of life, brought life to the coastal Natives by watering their plants, thus giving food and water to the animals they hunted; it controls everything from the sky and is father of the sky children.
Silicone caulk can be used as a basic sealant against water and air penetration. In organosilicon and polymer chemistry, a silicone or polysiloxane is a polymer composed of repeating units of siloxane (−O−R 2 Si−O−SiR 2 −, where R = organic group).
The Early Bird Spad 13 (also SPAD 13) is an American homebuilt aircraft that was designed and produced by the Early Bird Aircraft Company of Erie, Colorado. When it was available the aircraft was supplied as a kit and also in the form of plans for amateur construction.
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