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    • 31. 发明专利
    • Improvements in Metallic Packing for Piston Rods, Valve Rods, and the like.
    • GB189825341A
    • 1899-10-21
    • GB189825341D
    • 1898-12-01
    • SHAW ANDREWBLAND ASA
    • SHAW ANDREWBLAND ASA
    • 25,341. Shaw, A., and Bland, A. Dec. 1. Stuffing - boxes.- Relates to metallic packing for pistonrods, valve rods, and the like ; two kinds of such packing are described. (1) In one kind of packing, of which Fig. 3 shows one form, a series of split rings 2, 3, 4 are contained in a conical cup 1, which has a flat bearing-face at the bottom at right-angles to the rod. The adjacent faces of the rings 2 and 3 are coned so that they are approximately at rightangles to the conical face of the cup. The inner end of the cup has a flat bearing against a spherically-seated ring 9, and the rings and cup are pressed home by a spring acting against a follower 7. In one form, two sets of rings and cups pressed in opposite directions are employed ; and, in another form, additional rings are used in the one cup and the endwise pressure is exerted by a number of small springs lodged in recesses in a spring block-ring. (2) The second kind of packing improved is like that described in Specification No. 15,922, A.D. 1898. In this, shown in Figs. 6 and 7, the packing blocks 17 are contained in L-rings 16 made with pockets 16 for the reception of springs 19 for pressing the blocks 17 against the rod.