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SHORT HISTORY OF CONSUMER ELECTRONICS Contributing to the birth of consumer electronics were many earlier landmarks. Perhaps the most significant were Edison's 1877 invention of the phonograph, Fleming's development of the electron tube in the 1890s. Marconi's first wireless tranmission in 1895 and PeForest's 1906 in­ ventions which led to the elec­ tronic amplifier. '• rPAGE 12 - PLA1NDEALER - WEDNS8DAY ; FBMUJ AH Y 24, IW2 Wood Doors Offer Energy Savings, Beauty (armiDE 0 SEE THE G.E. SPACEMAKER MICROWAVE OVEN ALSO MANY OTHER G.E. APPLIANCES AT THE TRADE FAIR • FRI., SAT., & SUN. (FEB. 26 -27 -28) GENERAL ELECTRIC MICROWAVE OVEN THE MICROWAVE OVEN WITH THE SENSORS THAT MAKE SENSE! MODBL JVM68 TRADE-IN YOUR OLD COIINTERTOP MICROWAVE ON A GENERAL ELECTRIC SPACEMAKER™ MICROWAVE OVEN IT FITS RIGHT OVER YOUR RANGE! Automatic Cooking Control senses steam from cooking food, automatically adjusts cooking time and power level. Auto Roast uses the prpbe to cook by temperature, automatically adjusting power level for best results. Cook Code™ Control for convenient short-cut programming. Electronic touch cont : ols, clock and digital readout. Time or Temperature Cooking. Hold/Timer for no heat holding period or kitchen timer. 10 Power Levels. Extra-wide oven cavity. Cooktop light and 2-speed exhaust fan. Microwave Guide & Cookbook. OTHER MODELS FROM $5WM GE brings,good things to life. I 'SERVING McH :NRY AREA FOR OVER 50 YEARS' IAREY APPLIANCE ONiy 629 95 SALES A SERVKE 1241 N. GREEN ST., McHENRY 385-5500 WQMWATIWIRWFBDOOOW *M ASHRAf STANDARD 90 1 ANDOTHSR tNOUSTRY SIMPSON OOOfl SYSTEM,. 0.07 ctm 5% heat loss around door. The front entry of a home offers the first impression. No other door material can compare with wood for natural beauty. Wood doors can be stained, painted or otherwise finished to achieve a greater variation of appearance than any other material. And nothing can beat the aesthetic satisfaction of a wood door closing solidly when entering a home. The beauty and warmth of wood has long made Simpson Timber Com­ pany's International Door line a favorite. But not everyone is aware of the energy efficiency afforded by wood doors. The mil­ lions of tiny honeycomb cells between wood fibers provide a high percentage of dead air volume, the best known insulation. Wood is a natural thermal break. The interior surface of a wood door is not cold to the touch in winter. Con­ densation does not occur on wood doors, nor do they freeze shut. Heat loss through a typical double entry wood panel door is 28 percent less than that through a sliding glass patio door. The real story of energy efficiency, however, is around the edge of the door. A study by the U.S. De­ partment of Housing and Urban Development states that the majority of heat loss occurs around the perimeter of the door - not through it, as many people believe. In fact, heat loss through the door accounted for 1.4 percent of the total heating load, while five percent was lost around the perimeters of doors lacking good weatherstripping. Independent laboratory tests, in accordance with American Society for Testing Materials (ASTM) standards, show that wood entry systems with single rabbeted wood frames, weatherstripping and oak sills with aluminum and vinyl sweeps have air infil­ tration rates in the range of 0.04 to 0.07 cubic foot per minute perineal foot of the door's perimeter, far ex-, ceeding published stan­ dards. The weatherstripped wood door also meets the toughest water infiltration standards (zero leakage) in the building products in­ dustry. An important considera­ tion in energy savings is how the door can be fitted and weatherstripped. This is an area where wood systems have always excelled, be­ cause wood doors can eas­ ily be trimmed and planed to custom-fit any entry way. Ordinary hand tools can produce a perfect fit, even when installing a door in an older structure where the entryway may have be­ come out of plumb or out of square over the years. Energy savings can also be realized with the use of insulated glass. The double panels of thermal glass trap a layer of dead air which acts as a natural insulator. The heat transfer or U- value of a single pane of glass is approximately 1.10. The average U-value of in­ sulated glass, by compari­ son, is approximately 0.60; a reduction in heat transfer of nearly 50 percent. Simpson offers a wide variety of Thermal door styles. Testing shows that Simpson's French-style in­ sulated glass doors are 64 percent more energy- efficient than French-style doors manufactured with single pane glass. Sash doors with insulated glass are about 37 percent more energy efficient than the pame doors with single pane glass. Simpson Thermal doors also feature wood grilles which are held se­ curely in the frame but can be removed to clean or finish the door. Manufactured of the finest vertical grain kiln- dried Douglas fir or western hemlock, Simpson Inter­ national Doors have long been known for their out­ standing-quality. Simpson's warranted Innerbond panels will not split through in any climate. The panels are manufactured by a laminated construction process to eliminate split­ ting problems. Simpson manufactures an International Door to match any architectural style. For more informa­ tion, write Simpson Timber Company, 900 Fourth Ave­ nue, Seattle, WA 98164. Grill-Griddle Versatility General Electric s new electric Grill or Griddle range otters good cooks different ways to prepare meals. Grilling can be done indoors with the use of a high air-flow tan in the vented hood. The interchangeable grill and the griddle of nonstick-coated aluminum are removable for easy cleaning and storage. It is a free-standing, 30-inch range that can be installed in a counter, a peninsula or an island. Well Drilling QUALITY WATER SYSTEMS SINCE 1902 CABLE TOOL & ROTARY WELL DRILLING „Sat,e* &1 Service ALL KINDS OF WELL REPAIR WORK SEE US AT BOOTH NO. 59 FOR ALL YOUR WATER NEEDS Joseph H. Huemonn C6ons Inc. 24 HOUR-7DAY PHONE SERVICE v DIAL 385 04141 2020 W. JOHNSBURQ li^ucynv mm