Jonval Turbine Water Wheel

1852 Scientific American  
of New York City, has taken measures to secure a patent for a novel and important improvement in the ventilation of railroad cars. The object of the improvement is to supply the CHS with cool pure air, free from dust, by blowers worked by belts re ceiving motion from the revolution of the axes of the cars, or from the engine. It is well known that if it were attempted to drive a current of air through a train of cars, it would be very disagreeable, owing to the cloud of dust and sand with which
more » ... and sand with which the atmosphere around a train of cars is charged. This evil is entirely obviated by Mr. Law; he brings the air in contact WIth revolving moist surfa ces, in troughs below the cars, and they take up all the sand and dust out of the air, and the air is afterwards driven through the cars cool and pure. The doors and windows can thus be kept perfect close, so that no sparks will enter to annoy, and there will be no danger of accidents by putting heads and arms out of the windows. The principle is diff erent from all others we have seen, and we hope some of our enterprizing railroad companies will soon give the invention a complete and fair test. At the present time those who wish for com fort and clean clothes keep clear of railroad travelling, except in cases 01 necessity. There can be no disguising the fact, that some im portant reform is wanted to keep dust, smoke, and sparks out 01 our railroad cars. We hope that every railroad company will give this subject attention, and so provide proper reme dies for these evils. OUf river steamboats are the finest in the world, and possess the most accommodations; on the other hand, our railroads are far behind those of the first class in Europe. improvin�. We must push along and keep ------c== =x ==�� __ ___ Improvement In Smelting Furnace •. Christopher G. Best, of the city of Albany, N. Y., has taken measures to secure a patent for an improvement in smelting furnaces, which i. of no small importance. The furnace is a reverberatory one, and the fuel and metal are separated in two different chambers but quite near to one another. The flame and heat is brought down vertically through the metal and spread equally over and all through it. The ashes of the coal is not allowed to mix with the metal. It can act both as a draught and a bla.ot furnace. It can be char ged at intervals the same as the cupola fur nace, and it works with great convenience and economy. ------= == =�----Eye. oC MIII.tonel. D. P. Gerberick, of South Bend, County of St. Josephs, Ind., has taken measures to secure a patent for an improvement in the eyes of millstones, the object of which improvement is to prevent the clogging of the stones when grinding moist grain, middlings, &c., which are liable to do so. The improvement consilits in form1ng the upper portion of the eye of an inverted conical shape, and the lower portion of the eye of a conical shape also, the base of the lower cone being at the face of the stone, and the smaller ends of the two cones meet ing at a point above the centre of the stone. The lower end ot the damsel is also of a co nical shape, the base of the damsel cone being ot sufficient area to cover the fork which strides the bail of the stone.
doi:10.1038/scientificamerican07101852-340e fatcat:jdgukfw4rbbmblzlgdmun2cuba