MECHANICS AXD USEFUL ART*. 18 



head, and stands upright in the barrel, around which the flour or meal is 

 placed. The other head is then put on, the tube protruding three-quarters 

 of an inch, and the latter is then clinched or battered down on the outside, 

 leaving a hole the diameter of the tube, entirely through the centre of the 

 barrel. If the theory noted above is correct, and if the tube, which is 

 made of sheet iron, will allow the same evaporation and escape of heat at 

 the sides of the barrel, then Mr. Pearsall's invention may prove a valu- 

 able one. 



A NEW MODE OF MANUFACTURING PAINT BRUSHES. 



A very simple and effectual mode of manufacturing paint brushes, 

 without involving the necessity of driving the handle through the centre of 

 the brush, has been invented by Adonijah Handel, of Williamsburgh, X. 

 Y. The nature of his invention consists in placing the hair of which the 

 brush is to be made in a metal ring, and securing it therein by cementing 

 or sizing the roots, so as to prevent the escape of the hair, and then uniting 

 the back end of the ring, by riveting or other wise, with a back plate, which 

 receives the handle. The hair is most effectually secured in. this manner, 

 and it forms a solid brush ; it is easily constructed, durable, and more 

 convenient than those in use. 



WIRE GAUZE FOR BANDAGES AND SPLINTS. 



Specimens of this article have been exhibited before the London Medi- 

 cal Society, by Mr. Startin, the inventor. The material employed is 

 flattened copper or iron wire, and costs about Is. -id. per square' foot ; and 

 if the expense were not an object, the, materials might be plated. The 

 usual mode of application is, first to obtain a pattern for the splint by 

 means of cartridge-paper, and then carefully to cut the sheet of gauze to 

 the pattern. The splint further requires that the edges should be cut 

 .transversely at intervals, and the free edges covered with thin lead or 

 adhesive plaster. Folds of linen, wet with water, are placed upon the 

 limb underneath the splint, and the whole apparatus is kept in position by 

 rollers or tapes. The merits of the invention were said to be those of 

 lightness, cheapness, coolness, and affording the opportunity of readily 

 applying lotions without disturbing the bandages. It was recommended 

 in fractures, resections of the joints, and, indeed, in almost all instances 

 in which cradles and splints are ordinarily employed. 



VICE'S SELF-REGULATING WIND-MILL. 



Mr. T. C. Vice, of Rochester, X. Y., has recently invented a self-reef- 

 ing wind-mill, designed to operate on a large scale. The arms and 

 frames are as usually constructed, but the canvas sails are filled with 

 hanks or rings at each end running loosely on an iron rod, also with rods 



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