A patent for "Methods and Means of Defrosting a Cold Diffuser" was issued to its Black American inventor, F.M. Jones (No. 2,666,298). It gave a method to defrost using a heating medium when the surface of the diffuser has accumulated a layer of frost or ice which would otherwise reduce its heat transfer capacity. He used a compressor, condenser and evaporator which were interconnected in a manner such that the compressed refrigerant could also accomplish the defrosting of the evaporator in a defrosting cycle. He was a prolific inventor, whose first patent was for a "Ticket Dispensing Machine" in 1939 (No. 2,163,754), accumulating about 20 more patents relating to gas engines and refrigeration devices in 20 years.
NEON ADVERTISING SIGNS
January 19, 1915 - U.S. patent
A U.S. patent was issued to George Claude of Paris titled a “System of Illuminating by Luminescent Tubes” which led to the neon sign (No.1, 125,476). The patent describes the technical details to be observed in the construction of a tube well evacuated of other gases before the addition of one of the rare gases, especially neon. It considered the materials used and size of the electrodes, the diameter of the tube, and suitable operating pressure. Tube lengths of 5 to 6 meters were discussed, and how it was possible to maintain the light output for an extensive used life.
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The wealth of the nation
by Earth Day, Gaylord Nelson
"...The wealth of the nation is its air, water, soil, forests, minerals, rivers, lakes, oceans, scenic beauty, wildlife habitats and biodiversity that'as all there is. That'as the whole economy. That'as where all the economic activity and jobs come from. These biological systems are the sustaining wealth of the world...."
A Change is Gonna Come
by Meredith Grey
"...Change; we don't like it, we fear it, but we can't stop it from coming. We either adapt to change, or we get left behind. It hurts to grow, anybody who tells you it doesn't is lying. But here's the truth: Sometimes the more things change, the more they stay the same. And sometimes, oh, sometimes change is good. Sometimes change is everything...."
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Salary
about Steve Jobs
Steve Jobs' annual salary was $1, just enough to keep company health benefits.
More vehicles
about Stolen On New Year's
More vehicles are stolen on New Year's Day than any other holiday throughout the year. (So does that mean thieves are having their last fling before changing their ways or are they trying for a big score to start the New Year?)
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Category Information : Dogs
This is our Dogs category. If you are interested in Dogs, feel free to browse these listings. If you have a site that fits within this category, Submit it for inclusion.
Unfortunately just like humans our pets will age too. With the aging process comes health problems and with health problems comes very expensive vet bills. Research you dog
Welcome to Chihuahua-People - a Chihuahua website and forum. We have many features on this website to make your experience here more enjoyable. The first step would be to REGISTER for free so you c...
Are our business. We have installed countless dog fence and pet containment systems, so we know all the ins and outs of installation and training. If you are new to dog containment systems and just...
Artificial Dog Grass Drains Instantly. Use for Kennels, Landscaping, Dog Parks and Potty areas for Dogs. Dog owners looking for artificial dog grass, believe they have many choices for different qu...
Dog grooming is one of your dog's basic needs and an important part of dog ownership. Just like people, dogs need physical maintenance to look and feel their best. At Jim’s Dog Wash we under...
Pet Supplies from Amazon are available at this site. Catergorized into the most popular Dog Breeds with a section for all Pet Supplies and a section for Dogs only.
Pit bulls are affectionate and intelligent dog so they make a great pet for kids. Pit bulls can be adopted at the pit bull kennels. Pit bull refers to a group of dog breeds that are derived from the molosser family.
Each quarter, twenty general or topical web directories are evaluated and rated according to predetermined criteria. The top ten are placed in competition with one another and ten additional direct...
Search Office Space was founded in 1993 by Richard Smith in order to bring together all elements of the serviced office space market into one convenient single point of contact, with clients having...
Friendship poems happen to be just the best medium of expressing eternal friendship to that special friend. You can let all the love and affection you possess flow out, right onto the paper lying in front of you, through a sweet little friendship.
The course of the River Thames as we know it today was created about 10,000 years ago, by melt water from the ice-sheets that covered much of the United Kingdom during the last ice-age...
Unfortunately just like humans our pets will age too. With the aging process comes health problems and with health problems comes very expensive vet bills. Research you dog