_Reported Officially for the Scientific American_ PATENTS ARE GRANTED FOR SEVENTEEN YEARS the following being a schedule of fees:-- On filing each Caveat $10 On filing each application for a Patent, except for a design $15 On issuing each original Patent $20 On appeal to Commissioner of Patents $20 On application for Reissue $30 On application for Extension of Patent $50 On granting the Extension $50 On filing a Disclaimer $10 On filing application for Design (three and a half years) $10 On filing application for Design (seven years) $15 On filing application for Design (fourteen years) $30 In addition to which there are some small revenue-stamp taxes. Residents of Canada and Nova Scotia pay $500 on application. _Pamphlets containing the Patent Laws and full particulars of the mode of applying for Letters Patent, specifying size of model required, and much other information useful to Inventors, may be had gratis by addressing MUNN & CO., Publishers of the Scientific American, New York._ * * * * * 71,836.--MACHINE FOR NOTCHING KNITTING NEEDLES.--W. Aiken, Franklin, N.H. I claim 1st, The improved machine, substantially as described, for effecting the several operations of notching, slotting, boring, and burring a knitting machine needle blank, in the order and manner as explained. 2d, Also, the combination of one or more vibratory clamps, Y, the cam, E, and the two burrs or cutters, q r, for forming the notches in the needle blank such clamp or clamps, cam and cutters being provided with mechanism for operating them, substantially as described. 3d, Also the combination of one or more vibratory clamps Y, the cam, E, the two burrs or cutter wheels, q r, and the slotting burr or cutters, s, provided with mechanism for operating them substantially as explained, 4th, Also, the combination of one or more rotary clamps, Y, the cam, E, the burrs or cutter wheels, q r s, and the drill, u, provided with mechanism for operating them, substantially as set forth. 5th, Also, the combination of one or more vibrating clamps, the burring cutter, t, the drill, u, and the slotting cutter, s, arranged and provided with mechanism for operating, substantially as explained. 71,837.--TEA AND COFFEE POT.--Alfred Arnold, Tenafly, N.J. I claim 1st, In a tea or coffee boiler, the base, D, so constructed and adapted, relatively to the other parts, that an oscillating motion will be imparted to the vessel by process of ebullition, substantially as shown and described. 2d, In combination with the base or heating-surface, D, the chambers, b b', and diaphragm, E, or their equivalents, substantially as arranged and described, and for the purposes shown.