. Locomotive engineering : a practical journal of railway motive power and rolling stock . because there wouldhi more power at long end of lever. Takean engine with 60-inch wheel, 30 incheswould be the length of lever, 12 the shortend and 18 long end. If the piston has254 square inches and 125 pounds persquare inch, we would get about at long end, or at rail. Now if Boyer hammer, shown at work in one ofthe views, has made a great record foritself and seems to be finding new fieldsof usefulness almost daily. For boiler workit is particularly useful, as it can chip,caulk, bead flues
. Locomotive engineering : a practical journal of railway motive power and rolling stock . because there wouldhi more power at long end of lever. Takean engine with 60-inch wheel, 30 incheswould be the length of lever, 12 the shortend and 18 long end. If the piston has254 square inches and 125 pounds persquare inch, we would get about at long end, or at rail. Now if Boyer hammer, shown at work in one ofthe views, has made a great record foritself and seems to be finding new fieldsof usefulness almost daily. For boiler workit is particularly useful, as it can chip,caulk, bead flues and rivet up to fair sizes. When it comes to regular riveting theother cut gives some idea of the work nowbeing handled. This shows a iJ4 x 6-inchBoyer riveter on the structural work ofthe North Western Elevated Railroad inChicago. It will drive up to iJ4-nch rivets. The catalogue abounds in fac-simileletters testifying to the tools of this com-pany, and it will pay anyone interested tosend for a catalogue. In the shops of the Burlington, CedarRapids & Northern at Cedar Rapids they. BUYER AT WORK ON THE .\E\V ( UK \ii(i ELi;v.\TED box if it is broken and not yet out; goahead that way. (77) J. H., Rat Portage, Ontario, asks:How does the reducing valve of a Pitts-burgh compound work? A.—The reduc-ing valve is located between the high-pressure and low-pressure steam chests,and reduces the steam going to the low-pressure chest, only allowing enough topass into the low-pressure cylinder to dothe same work as the high-pressure cyl-inder, with steam direct from boiler. Thereducing valve has on its initial side apiston, one side of which is open to theatmosphere. The size of this piston isgoverned by the difference of the areas ofthe cylinders. If they are 254 to i, thisvalve will be in balance when there is180 pounds steam going tothe high-pres-sure and 80 pounds arc going to the low-pressure; and if there is any variation of wheel was 58 inches we would
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
