The following inventions have been patented this week, as will be found by referring to our List of Claims :— HEMP HAKVESTEK.—C. B. Brown, of Alton, 111., has invented an improved machine for harvesting hemp, the invention in which consists in the employment of an endless apron and guide rods arranged relatively with each other and the sickle or cutting device, whereby the hemp as it is cut, and one swath formed, is conveyed back from the sickle and deposited on the ground at a sufficient distance from the standing hemp, to allow an unobstructed walk or track for the team when the succeeding swath is being formed. PRINTING PRESS.—This is an improvement on that class of printing presses, in which a continuous rotating cylinder that receives the sheet to be printed is used in connection with a reciprocating bed on which the form is placed. The object of the invention is to simplify in a great degree the construction of such presses, and also to obtain a positive or vibratory movement of the cylinder and bed relatively with each other at the time the impression is given to the sheet, thereby ensuring a perfect register and a clear impression. G. P. Gordon und F. 0. Degener, of New York, are the inventors. BDKNEK FOR VAPOR LAMPS.—Thos. Var-ney, of San Francisco, Cal., has invented an improved construction of burners for burning the vapor of Benzole, or of other hydro-carbon that can be burned in vapor lamps. They are made in such a manner that the admixture with the vapor of the necessary quantity of air supplied by a blowing apparatus to make it burn with a brilliant light shall be effected within the burner instead of within the reservoir, as is now usual. BRUSHES.—J. H. Tatem, of New York, has invented an improvement in the manufacture of brashes, which consists in having the back of the brush in which the bristles are secured formed of a thin metal plate, the bristles being secured in this plate detached from each other and at equal distances apart. The object of this invention is to obtain a brush that can be readily cleaned, which will not absorb grease, and will not in any way bo affected by moisture, and hence be exceedingly durable, and at the same time not more expensive than those at present in use. HAY FORK.—This invention relates to an improvement in that class of hay forks in which a tackle is used for elevating the loaded fork. The invention consists in attaching to its handle by means of a joint and securing the rake when loaded in a proper relative position with the handle by means of a catch or fastening connected with a rope, which is also attached to the handle. The parts are arranged so that the fork may be readily elevated and loaded and unloaded, the manipu- ( lation throughout being extremely simple. . Chas. E. and Joseph N. Gladding, of Troy, , Pa., are the inventors.