Section 58.—PACKINGS, JOINTS, STUFFING-BOXES AND PISTONS.
(See also [p. 132].)
[2342]. Piston ring joint lapped and scarfed.
[2343]. Intermediate stuffing-box and sleeve for high and low pressure cylinders.
[2344]. Dished steel piston.
[2345]. Bucket piston, with valve and bridle and leather packing.
[2346]. Stuffing-box, with screwed cap gland.
[2347]. Piston leather for cold water.
[2348] to [2352]. Piston ring joints.
[2353]. Double cone joint for a swivelling fitting for steam or water. The joints are ground in like a mushroom valve.
[2354]. Pipe connection, with rubber disc joint, for moderate pressures.
Swivel pipe joint. See [No. 2303].
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[2355]. Collar packing for a valve spindle, where the pressure tends to compress the packing.
[2356]. Piston with two L section rings, expanded both vertically and radially by a spiral spring. This makes a tight joint with the cylinder and also with the junk ring.
[2357]. Adjustable piston or piston valve. F. H. Richards’ patent, U.S.A.
[2358]. Rubber expanding plug.
[2359]. Gas engine piston, with three rings and junk rings between them.
[2360] & [2361]. Valve spindle joints without packing or stuffing-boxes, kept tight by cone seatings and set screws.
[2362]. Piston (spring) ring joint, with glut.