Locomotive appliances . Fig. 3. Gibbs Vibrating Cup for Pistons with Enlarged Ends. UNITED STATES VALVE-STEM PACKING. It will be seen by reference to Fig. 4 that this pack-ing is very similar to the piston packing of the samemanufacture. A bushing or support, 9, is placedin the stuffing box to earn the weight of the valvestem. This support wears the valve stem less thanthe neck of the cylinder head formerly did, yet it iscertain to wear some flat place4 on the under side of thevalve stem the length of the valve travel when thereverse lever is hooked up in the position most when the v
Locomotive appliances . Fig. 3. Gibbs Vibrating Cup for Pistons with Enlarged Ends. UNITED STATES VALVE-STEM PACKING. It will be seen by reference to Fig. 4 that this pack-ing is very similar to the piston packing of the samemanufacture. A bushing or support, 9, is placedin the stuffing box to earn the weight of the valvestem. This support wears the valve stem less thanthe neck of the cylinder head formerly did, yet it iscertain to wear some flat place4 on the under side of thevalve stem the length of the valve travel when thereverse lever is hooked up in the position most when the valve is full stroked this Hat placewould travel farther into the packing rings, and cause 15 226 LOCOMOTIVE APPLIANCES. a bad leak. This has been overcome in the design ofthis packing, by the use of the long, extended gland7 and preventer 8, which render the distance betweenthe support 9 and the babbitt rings 2 slightly greaterthan the full valve Fig. States Valve Stem Packing. Parts referred to by numbers, in Fig. 4, are asfollows: 2—three babbitt rings in halves, known asone ring; 3—follower; 4—ball joint; 5--swab cup;6—vibrating cup; 7--gland; 8—preventer; 9--sup-port. LOCOMOTIVE METALLIC PACKING. 227 Fig. 1 represents the Jerome piston rod packing,embracing all the new improvements used parts designated by letter are: A--piston rod;B--the cone; C-the gland; D—the stuffing box;E- -the packing rings; F—the follower; G—the coilspring; H—the bushing ring; J—-stud bolts; K—sliding ground joint; L—cap screws, to hold the swab
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectlocomot, bookyear1901
