American Inventions and Inventors

by William A. Mowry; Arthur May Mowry

The ancient Greeks are praised for their high civilization, and yet they were little better off than the savage Indians of the New World in the methods of heating their houses. Neither the Greeks nor the Romans had chimneys for their dwellings. It is true that Greece and Italy are warmer countries than England or most of the United States, and doors and windows could be left open with less discomfort than with us. Much of the smoke might thus escape, but enough doubtless remained to be unpleasant. The Greeks refrained from carving the rooms in which fires were built, for they realized that such ornamentation would soon be discolored by soot.

After Greece had been conquered by the Romans and Rome had been overthrown by the Germanic tribes, much of the ancient civilization was lost and the "Dark Ages" followed. During this period the people throughout Europe made their fires in holes in the centre of the room, under an opening in the roof—just as we have seen that the Indians did. When the family went to bed at night they covered the hole in the roof with a board and also threw ashes over the coals, to prevent the wooden house from catching fire while they slept. It was the custom in every town, for many centuries, to ring the curfew or "cover-fire" bell each night, warning the inhabitants to cover their fires, put out their lights, and go to bed.

The first chimneys were probably built in Northern Italy about seven hundred years ago. The story is told that the Lord of Padua went to Rome in 1368 and found no chimney in his hotel. The Romans still held to the custom of kindling their fires in openings in the ground in the middle of the room. The Lord of Padua, longing for the comforts to which he was accustomed, sent to Padua for carpenters and masons, and had them build two chimneys like those at home. On the top of these he had his coat of arms affixed.

Gradually chimneys came into use throughout Europe, and when the colonists came to America they built them as a matter of course. As we have seen, the fireplaces were mammoth, and the chimneys therefore were also of great size; and for this reason, although the discomfort from the smoke was less than in the Indian long houses, it was not wholly avoided. For centuries, however, people had been used to the smoke, which occasionally poured back into the room instead of going up the chimney, and it did not occur to them, any more than to the red men, that it could be avoided. Not until a New England boy, who was then living in England, began to study into the cause of smoking chimneys was any relief obtained.

Benjamin Thompson was born in Woburn, Massachusetts, and had just come to manhood when the American Revolution broke out. Partly owing to certain family connections, he took the side of King George III., and went to England. After the war was over he went to Bavaria, entered the service of the king, and became his chamberlain. He rose through various positions until he became minister of war, and was made Count Rumford. He remained in Bavaria a few years, then lived for a time in England, and spent his last days in Paris.

Both in Bavaria and in England, Count Rumford devoted himself to science and the improvement of the conditions of his fellow men. It would be interesting to know the steps that he took and the good that he did, but we can here notice only some of his improvements in the methods of heating houses. As a scientist he was asked to "cure" smoking chimneys, and he succeeded so well that he once said he had "cured" more than five hundred in London alone.

He found out the simple fact that smoke will readily go up a chimney, unless there is something to stop it. All that was necessary was to discover the trouble and remove it. In nearly all of the five hundred chimneys nothing more was needed than to make the lower part of the chimney and the fireplace of the right form and size. One firm of builders was kept constantly employed carrying out his suggestions. Not only did he "cure" the chimneys, but he also prevented the waste of much heat. In accordance with his directions the square fireplace was changed so that the sides made a greater angle with the back and would therefore reflect more heat into the room. He also made the space about the fire smaller, thus rendering the air hotter and therefore more ready to rush up the chimney, carrying more of the smoke with it. Count Rumford's ideas have been generally followed since his day, and now fireplaces seldom give out smoke into the room while they furnish more heat.

Count Rumford next took up the problem of improving stoves. Before we consider his improvements, however, we must note something about the first stoves. Another Massachusetts boy, born nearly half a century before Benjamin Thompson, also became a scientist, inventor, and discoverer. Benjamin Franklin was a traveler and in many other respects was like Count Rumford. But he chose to go with the colonies when they revolted from Great Britain, and he gave all his services to his fellow countrymen. A few years before the birth of Thompson, Franklin made an invention which was the first improved method of heating rooms. There had been so-called German stoves before his day, but they were not much used in this country.