. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . he four project- the foot valve as shown. By casting thedoor-ring in blank, holes can be drilledto suit old studs, making it an easy mat-ter to apply this device to a locomotiveformerly equipped with old-style swing-ing door. The opening of valve A from mainair reservoir blocks the air within cham-ber Z and also within G of foot valve,the pressure against larger area of up-per piston head, thus holding the doorsshut. Foot pressure on pedal P lifts foot-valve stem off its seat, closes port H a
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . he four project- the foot valve as shown. By casting thedoor-ring in blank, holes can be drilledto suit old studs, making it an easy mat-ter to apply this device to a locomotiveformerly equipped with old-style swing-ing door. The opening of valve A from mainair reservoir blocks the air within cham-ber Z and also within G of foot valve,the pressure against larger area of up-per piston head, thus holding the doorsshut. Foot pressure on pedal P lifts foot-valve stem off its seat, closes port H andforms a close passage of air throughfoot-valve and through admission valve\ to the top side of large piston reason of the pressure on the underside as described, equalized pressure onboth sides of large head now results indriving the piston down by the pressureagainst the upper side of small foot pressure on pedal P is with-drawn, valve stem X seats itself, againblocking the receiving air within G; portH is opened, thus allowing a free escapeof air from upper side of large head. DIAGK \M i IF SHOEMAK ing lugs of the door-ring by bolts upright plate is also bolted to thedoor guides to the right of the door, towhich the Shoemaker door operator isattached by four stud bolts. Thus it willbe noted that the entire fire-door appa-ratus, excepting foot valve, is attachedto the boiler by the door-ring studs, ren-dering it unnecessary to make additionalholes aside from the two for attaching ER FIRE-DOOR OPENED,through exhause valve W, and the pistonis driven upward by pressure against thegreater area of upper piston head. When large piston head blinds port Man air cushion is formed between sameand cylinder head until the air graduallyescapes through a very small hole instem of feed check valve V, which pre-vents slamming of doors in closing move-ment. When the lower head blinds port GOLD CarHeating LightingCompany Manufacturers oi ELECTRIC,STEAM ANDHOT WATERAPPAR
Size: 1597px × 1564px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidrailwaylocom, bookyear1901
