. American engineer and railroad journal . between the barrel 8 andthe end of the piston 10, will cause the cylinder 9 to be movedin the direction of the arrow A, and cause the crank 5 of theshaft 3 to be moved another quarter of its revolution, whichcarries the piston 6 to its lower position. The ports 13 and14 are now opened to admit steam or air into the chamber 17beneath the piston 6. This causes the upward movement ofthe piston 6, and causes the crank 5 to turn the third quarterof its revolution, and moves the cylinder 9 still further in thedirection of the arrow A. As the crank 5 complet
. American engineer and railroad journal . between the barrel 8 andthe end of the piston 10, will cause the cylinder 9 to be movedin the direction of the arrow A, and cause the crank 5 of theshaft 3 to be moved another quarter of its revolution, whichcarries the piston 6 to its lower position. The ports 13 and14 are now opened to admit steam or air into the chamber 17beneath the piston 6. This causes the upward movement ofthe piston 6, and causes the crank 5 to turn the third quarterof its revolution, and moves the cylinder 9 still further in thedirection of the arrow A. As the crank 5 completes this thirdpart of its revolution, the port 15 is opened to the chamber 16,and the cylinder 9 is moved in the opposite direction to thatindicated by the arrow A, causing the crank 5 to complete thelast or fourth part of its revolution, and bringing the partsagain into the position shown in fig. 1, and then the operationis repeated. The air or steam exhausts from the chambers 16and 16 through the ports 15 and 15, and passages 18 and 18,. ATWOOD & PERKINS ENGINE. in the piston 6 and barrel 8, and from there through a pas-sage 19 intothe interior of the housing, from where it escapesthrough an exhaust pipe. With this construction it will be seen that no valves areemployed, other than those formed by the piston and cylinderthemselves moving with relation to their ports. The engine,the inventors say, is an exceedingly simple and durable one,and is not likely to get out of order. Their patent is No. 514,054, dated February 6, 1894. GOLDS PRESSURE REGULATOR. The inventor of this device (fig. 13), Mr. Edward E. Gold,of New York, says of his invention that it relates to reducingvalves for reducing a fluid from a higher to a lower pressure,and especially to such valves as are adjustable in order thatthe pressure on the eduction side of the valve may be regu-lated at will. Pressure regulators of this character are com-monly constructed with a regulating valve tor choking or clos-ing the
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
