Scientific American, Volume XXXVI., No. 8, February 24, 1877, page 99 by Various Authors
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ould fill half of our paper to print them all; but we generally take pleasure in answering briefly by mail, if the writer's address is given.
Hundreds of inquiries analogous to the following are sent: "Who sells a tool for truing up a crosshead wrist? Who sells tools for refitting steam valves without unscrewing them from the pipes? Who sells spoke-turning lathes? Who makes machinery for freeing wool of burrs and dirt? Where can tungsten, or tungsten steel, be procured, and at what price? Who sells silicate of alumina and silicate of potash?" All such personal inquiries are printed, as will be observed, in the column of "Business and Personal," which is specially set apart for that purpose, subject to the charge mentioned at the head of that column. Almost any desired information can in this way be expeditiously obtained.
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OFFICIAL.
INDEX OF INVENTIONS FOR WHICH LETTERS PATENT OF THE UNITED STATES WERE GRANTED IN THE WEEK ENDING January 18, 1877, AND EACH BEARING THAT DATE.
[Those marked (r) are reissued patents.]
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A complete copy of any patent in the annexed list, including both the specifications and drawings, will be furnished from this office for one dollar. In ordering, please state the number and date of the patent desired, and remit to Munn & Co., 37 Park Row, New York city.
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Abdominal corset, C. Lascell 186,258 Acoustic telegraph, T.A. Edison 186,330 Advertising card, H. Mahler 186,209 Air compressor, J. Clayton 186,306 Air compressor, W.F. Garrison 186,336 Animal trap, T.N. Hughes 186,252 Annealing furnace, H.B. Chess 186,404 Atomizer, W. Kennish 186,208 Axle tree, trussed, J.B. Brewster 186,227 Barbed fence, C.F. Washburn 186,389 Bee hive, G.W. Akins 186,223 Belt shipping attachment, R. Denmark 186,318 Blotter and paper clip, C.B. Farrington 186,288 Bone black, cooling, C. Doscher 186,327 Book back, metallic, I. Reynolds 186,216 Bottle and basket, E. Cusenier, Sr 186,311 Bottle for hair dye, T. Divine 186,