Mechanics' magazine and register of inventions and improvements . er chamber of the cylinderL. The portion of the air which the alter-nate motion of the valves q q allows to passinto the upper chamber of the pumps K Kexpands, and acting with all its force on theupper side of the piston d, forces it down tothe small openings pp, cut infthe cliamber forthat purpose, and, escaping there, relieves thepiston of the pressure, while the balanceweights, i i, keep the chain, hh, stretched out, and the balance beam G G in equilibrio.—In order to preserve the density of the airin the upper chamber of the
Mechanics' magazine and register of inventions and improvements . er chamber of the cylinderL. The portion of the air which the alter-nate motion of the valves q q allows to passinto the upper chamber of the pumps K Kexpands, and acting with all its force on theupper side of the piston d, forces it down tothe small openings pp, cut infthe cliamber forthat purpose, and, escaping there, relieves thepiston of the pressure, while the balanceweights, i i, keep the chain, hh, stretched out, and the balance beam G G in equilibrio.—In order to preserve the density of the airin the upper chamber of the cylinder L,the operator must occasionally pump thechamber full of air, by means of the pumpM ; if this be done every five or six minutes,it will prevent the necessity of spending twohours when the machine first starts to chargethe chamber. Now, v>hereas it is evident that the powerof the machine hereinbefore described maybe applied to any of the ordinary purposesibr which the power of steam-engines are nowused, I claim it as my invention, &c., & Machine for Harrowing, Sotoing, and Roll-ing. By Jajies D. Woodside. To theEditor of the New-York Farmer, andAmerican Gardeners Magazine. Sir,—I have recently invented andtested what judges esteem a valuable im-provement in the harrow. It consists ofa revolving cylinder, containing 45 feet,which is revolved by a power obtained fromthe wheels of a cart, to which it is with easeattached and detached. In addition to theharrow, there is a convenience for sowingthe grain in front of the cart, by supplying ahopper, from which it is conveyed into asieve, so constructed as to distribute it fromwheel to wheel. The cylinder harrow in therear of the cart effectually covers the to this is another cylinder used asa roller. From the above it will be perceiv-ed that I can of a truth aflirm, that I can sitin the front of my cart, under a canvas co-vering, sow the grain, harrow and roll it in,without exposure to the sun, leavin
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Keywords: ., bookcentury1800, booksubjectindustrialart, booksubjecttechnology
