Locomotive appliances . Fig. 8. Fio. 0. Crosby Locomotive Pressure Gauge. mechanism, which transmits the free movementsof these4 Bourdon tube springs to the index, has beendesigned with great care, and sd that it may beeasily renewed in case of repairs. These gauges for locomotive use are graduated toany pressure not exceeding five hundred pounds persquare inch. 96 LOCOMOTIVE Fig. Single Tube Gauge. Fig. 10 shows the internalarrangement of a single Bour-don tube spring Crosby gauge is designed tomeet the demand for a cheapergauge than the more accuratedouble t
Locomotive appliances . Fig. 8. Fio. 0. Crosby Locomotive Pressure Gauge. mechanism, which transmits the free movementsof these4 Bourdon tube springs to the index, has beendesigned with great care, and sd that it may beeasily renewed in case of repairs. These gauges for locomotive use are graduated toany pressure not exceeding five hundred pounds persquare inch. 96 LOCOMOTIVE Fig. Single Tube Gauge. Fig. 10 shows the internalarrangement of a single Bour-don tube spring Crosby gauge is designed tomeet the demand for a cheapergauge than the more accuratedouble tube form before illus-trated. The thermostatic waterback gauge shown withsingle and double Bourdon tube springs in Figs. 11and 12, is particularly adapted for use on high-pres-sure locomotives, especially compound locomotives,which frequently carry a boiler pressure of two hun-dred pounds, or over. It is well known that when a steam gauge in use, onaccount of its location, is heated to a temperature of100° Fahr., and upwards, that there is an expansion ofits parts, due to the heat, to such an extent that it willbe erroneous in measuring the pressure which itshould record. In such cases the parts which mate-rially affect the correct operation of the gauge are thetube springs. It occurs thus: The tube springshaving been tested and adjusted to a certain move-ment under pressure in t
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectlocomot, bookyear1901
