[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].

[Larger plate.]

[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.