. Scientific American Volume 16 Number 12 (March 1867) . s bywhich he can easilyswing the upper frameand thus aid in deter-mining the direction ofthe furrows. The for-ward swivels, to whichthe whiffletrees are at-tached by means of arod passing through avertical slot in theirsides, are connected tothe upper frame by pi-vots, and the rod at-tached to the whiffle-tree bar also passesthrough a horizontalslot in the forward end of the plow beam, thereby permitting lateral motion to theshares. The simple construction of this cultivator, with its ease ofhandling, seems to be sufficient to recommend
. Scientific American Volume 16 Number 12 (March 1867) . s bywhich he can easilyswing the upper frameand thus aid in deter-mining the direction ofthe furrows. The for-ward swivels, to whichthe whiffletrees are at-tached by means of arod passing through avertical slot in theirsides, are connected tothe upper frame by pi-vots, and the rod at-tached to the whiffle-tree bar also passesthrough a horizontalslot in the forward end of the plow beam, thereby permitting lateral motion to theshares. The simple construction of this cultivator, with its ease ofhandling, seems to be sufficient to recommend it as an effectivefarm implement. The horses as well as the implementpapear to be so attached and arranged as to be under entire control. Patent ordered to issue through the Scientific Amer-ican Patent Agency to Ford & Howe, assignees of HenryHowe. Address the former at Oneonta, N. Y., for further in-formation. THE HYDKAPIIC PKESS. It is doubtful if Mr. Bramah, the inventor of the hydraulicpress in 1796, ever imagined the many and important uses to. mmmm FORD & HOWES CULTIVATOR. which his apparatus would be applied. It has become one ofthe most important machines for the manipulation of the met-als—especially the working of steel—as well as being of thegreatest value in many other departments of manufacturingindustry. For pressing fabrics and material like cotton intoconvenient bales it has long been used. For testing the strength of material in various forms it is extensively em-ployed, and in forging and compressing steel in its fused stateit is becoming more and more important. A pressure of over2,000 tuns is not uncommon, and as this immense pressuremust come upon the main cylinder, it is evident that the cyl-inder must be correspondingly strong. This cylinder is usually made of cast iron, of great thick-ness of wall compared to the bore, yet the water has been forced through the poresof the iron in fine sprayin some cases. Whenthis occurs the limit ofresistance of the
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