The Norwalk Air Compressor (1888) . CDCOCO 0 ufl) r 21 Pattern of 1886, With the year 1886 we enter on the fifth year of use of Corliss Valves on the Air Cylinders. Universal success and satisfaction have attended their .^ employment. In the Pattern of 1886 is shown a new valve motion which I from its novelty will attract the attention of mechanics. The object of thisarrangement is to get the valve movement on one side of the machine and tohave the discharge valves stand still during the period that they are closedwith more pressure above than below them. We now employ this valvemovement on so
The Norwalk Air Compressor (1888) . CDCOCO 0 ufl) r 21 Pattern of 1886, With the year 1886 we enter on the fifth year of use of Corliss Valves on the Air Cylinders. Universal success and satisfaction have attended their .^ employment. In the Pattern of 1886 is shown a new valve motion which I from its novelty will attract the attention of mechanics. The object of thisarrangement is to get the valve movement on one side of the machine and tohave the discharge valves stand still during the period that they are closedwith more pressure above than below them. We now employ this valvemovement on some of our special (D 0 r (D u 7/ /* I o 23 1 Pattern of 1887 In the usual patterns of the Standard Norvvalk Compressor the air pres-sure in the Inlet Cylinder is about 25 pounds. This pressure is so light thatwe had heretofore considered and found its effect on the wearing of the Cor-liss Valves of little consequence. However the demand on us for compressorsfor pressures to thousands of pounds to the square inch made it expedient touse higher air pressure in our Inlet Cylinder. We thus came nearer to theconditions imposed on those builders who have attempted and failed in mak-ing compressors for ordinary pressures with single cylinders and positivevalves. Our remedy was effective, and is illustrated in the valve motion ofthe 1887 pattern. The valves are moved by cams. The shape of these camsare such that the valve remains at rest until the pressure below it is nearlyequal to that above. Then the movement begins and the valve is quicklythrown full open. In closing the cam allows a rapid movement so that
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectdivisio, bookyear1888
