Two metallic packing Rings and springs for pistons
- Made:
- c.1878
- maker:
- William Buckley and Company
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Two metallic packing Rings and springs for pistons
This packing was patented in 1878 by Mr. W. Buckley. It consists of two equal steel rings, bored conically inside, and cut through at one spot, gunmetal cover pieces being fitted to prevent leakage between the ends of the rings. Between these rings is placed an internal ring, formed by coiling wire of rectangular section into a helix, flattening it, and joining the ends, after it has been bent to a circle by a flat core. This ring, pressing on the inclined interior surfaces of the split rings, expands them radially, and also forces them apart longitudinally, so as to maintain a tight joint on the sides of the recess in the piston, as well as on the cylinder.
