GB129065A - Improvements in or relating to Obturator Rings. - Google Patents

Abstract

129,065. Hecht, J. S., and Dowdell. A. T. May 29, 1918. Piston packing.-In metal-packing-rings of cup-leather type divided at one or more points the joints are covered by plates made to conform to the section of the ring and having flanges overlapping the edges of the ring. In the form shown in Fig. 3, a plate B is formed with flanges B<1>, B<2> entering recesses in the edges of the packing-ring at the joint. The plate may be riveted to one end of the ring, as shown. Alternatively, the plate B may be dispensed with, one end of the ring being made of the section of the plate and overlapping the other end of the ring. In this construction, the ends may be halved or of unequal thicknesses, or bevelled, and the faces in contact may be corrugated &c. In a modification, one ring of the section of the plate B is nested in an ordinary ring. In the case of a ring consisting of two overlapping turns, the inner turn is made of the section of the coverplate B. Specifications 8571/15, 16120/15, 123,328 [Class 83 (ii), Metal articles &c.], 123,333, and 123,335 are referred to.