Assertion: said piston valve | /r/HasProperty | expanded into engaging contact therewith
Facets:
Source sentences:
text: Ill rally rotatable piston valve with suitable air passages and ports cooperating with the said cylinder, a bottom head therefor with air passage therethrough with annular spring seat, and a central pad seat with cushion pad therein, an inverted conical spiral spring con nected to react longitudinally and spirally on said piston valve disposed in said piston with its top coil expanded into engaging contact therewith, anadjustable base for the bottom of said spring having a projecting hub frictionally embraced by the bottom coil of said spring, and a screw threaded support for the said base, a cup spring seat at the top of said support, a short coiled buffer spring therein, and a lock nut for said screw threaded support.