| 摘要 |
1,099,855. Pipe couplings. E. R. MARGIS. April 9, 1965 [Nov. 30, 1964], No. 15196/65. Heading F2G. A coupling for joining the ends of two pipes 25, 26 comprises a cylindrical sleeve 21 formed of a cold flow pliant mouldable material with a relatively hard granular material 28 dispersed therein, a deformable metal cylinder 22 located about said sleeve, and an outer casing 20 confining the sleeve and cylinder therein and defining an annular chamber into which a flowable compound 24, preferably putty-like and of the type which will subsequently harden, is injected through a valve fitting 23 so that the cylinder 22 contracts on to and flows the sleeve, the granular material therein gripping the pipe ends. The cylinder 22 comprises a plurality of overlapping arcuate plates 30 having either stepped or diverging end flanges 31, 31<SP>1</SP> respectively, Figs. 4 and 7 (not shown). The casing 20 is provided with beaded edges 34 confining the sleeve and cylinder therein. As illustrated in Fig. 8 (not shown), split rings 49 or 51 may be provided between said beads and the sleeve ends, said rings either engaging within a pipe groove 46 or against a flange 50. In a further embodiment, Fig. 9 (not shown), a pipe end 55 is coupled to a bell-shaped socket 57 by an I-section casing 61 confining two sleeves 62, 64 of pliant material granular composition and two corresponding deformable metal cylinders 67 with two chambers into which a settable compound is injected. The hardness of the granular material is such that the grains are embedded into the coupled pipe end surfaces, Fig. 6 (not shown). |
