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Scientific American, Vol. 33, No. 18 (October 1875) (1875)
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American Patent Agency ment is mosaic. One of these countershafts can be seen in operation at the February 16, 1875. For further Information, address the The wards are about 80 feet long by 28 feet wide, and 13 Fair of the American Institute. For circulars and particu- inventor, Mrs. Harriet Gray,… … HOSPITAL FOR SICE CHILDREN, GREAT ORUOND STREET, LONDON © 1875 SCIENTIFIC AMERICAN, INC.Patents · Tools · Inches · Inventor · Improved · Horse power · Inch · Square feet · Cast Iron · Find directions · Heel plate · Scientific American · Wrought iron · Set screw · Steam engine · Slotting machine
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