electro-magnet for whatever purpose used. matter may be obtained by addressing the inventor wish to preserve files of valuable papers and to have them always ready for reference. the middle at their ends. On the inside of the opposite HOLCOMB'S IMPROVEMENTS IN ELECTRO-MAGNETS. A permanent steel magnet. C. has connected with in telegraphing the spring is so strained that it will just balance the power induced in the cores by the per twice as powerful as if no permanent magnet were used or it enables a spring of given power to operate with a of May 1860 and further information in relation to the
electro-magnet for whatever purpose used. matter may be obtained by addressing the inventor wish to preserve files of valuable papers and to have them always ready for reference. the middle at their ends. On the inside of the opposite HOLCOMB'S IMPROVEMENTS IN ELECTRO-MAGNETS. A permanent steel magnet. C. has connected with in telegraphing the spring is so strained that it will just balance the power induced in the cores by the per twice as powerful as if no permanent magnet were used or it enables a spring of given power to operate with a of May 1860 and further information in relation to the Power from Excess of combined Batte steel Power from both power over both power 5 magnet 20 combined. 90 seplate. 7 20 34 07 10 20 89 09 17 90 52 15 20 58 18 24 20 61 18 JACOBS' PORTFOLIO PAPER FILL get another) for several times its cost. By its means On the inner edge of the latter-named leaf are two bands being forcibly drawn forward for the purpose. By this arrangement the newspaper is not only held in a perfectly protected and safe position free from by any other mode of filing known to us. The patent for this invention was procured (through I were asked to account for my horses' legs and feet being in better order than those of my neighbor I should attribute it to the four following circumstances: First that they are all shod with few nails so placed in the shoe as to permit the foot to expand every time they move ; second that they all live in boxes instead of stalls and can move whenever they please ; third that they have two hours daily walking exercise when they are not at work ; and fourth that I have not a head-stall or track-chain in my stall. These four cir cumstances comprehend the whole mystery of keeping horses' legs fine and their feet in sound working condi-, scientific american, 1860-10-20
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