Patent GB-778555-A (GB)
Title: Reinforced hose
Inventor: GUARNASCHELLI STEPHEN
IPC: F16L11/00
Filed: 1956-03-14
Abstract: 778,555. Reinforced hose. TITEFLEX, Inc. March 14, 1956, No. 8047/56. Class 99(2) A hose reinforced against longitudinal extension and radial expansion comprises in combination a length of flexible hose end fittings attached to the ends of the hose a relatively inextensible reinforcement coextensive with the hose and secured at its ends against movement longitudinally of the hose to restrain the hose against longitudinal extension the reinforcement comprising two similar elongated ribbon like members each having substantially coplanar longitudinally extending edge portions connected by crossbands uniformly spaced from each other along the edge portions and bowed outwardly in a common direction from the plane of the edge portions substantially to semicylindrical contour, the two elongated members being assembled on the hose to encircle the hose with the crossbands proximate to the hose and means securing adjacent edge. portions of the two elongated members together so that the bands will restrain the hose against radial expansion. The hose may be flexible metal hose comprising a convoluted or a corrugated metal tube either seamless or made from a profiled strip of. metal helically wound into tubular form with the overlapping edges of the strip locked together in a continuous seam or it may be non-metallic hose having a rubber or other suitable jacket either with or without braids or wrappings of wire or non-metallic material incorporated in the wall thereof. The. hose reinforcement may replace an externally applied braided casing entirely or it may replace only the outer braid in a multiple layer braided casing. As shown end fittings. 12, 13 are attached to the flexible metal hose 11 for example by welding, brazing or silver soldering (see Fig. 5). The hose reinforcement comprises two similar members 14, 15 each having longitudinal edge portions 16, 17 connected by crossbands 18. At each end the reinforcement is secured to a collar 22 by means of screws or bolts 20. The longitudinal edge portions of the reinforcement are secured together by riveting as illustrated at 23 or bolting the adjacent edge portions together. Alternatively the edge portions may be spot welded together. Either during manufacture of the hose or during or after installation thereof the collars 22 will be secured against rotation. After connection the reinforcement will be. rotatably adjusted about the hose and then the collars may be secured against further rotation for example by soldering or brazing. The edge portions may have means for gradually increasing the resistance of the hose to flexure as the distance to the end of the hose decreases. Thus the edge portions 16, 17 may, be stiffened adjacent their ends with one or more, additional members 24. The additional members or strips may be of graduated lengths. All of the strips may be on one side of the edge portions or some on one side and some on the other. The hose can be flexed as shown in Fig. 3. The members 14, 15 may be made from bronze or steel. When used on metal hose they may be made from or covered with the same material as the hose. The reinforcing member may be used with non- .metallic hose. It may be applied to a hose having a braided casing. In a modification the spaces 29 (Fig. 5) do not extend perpendicular to the edge portions when used with helically convoluted hose the direction of the helical cross bands desirably will be opposite to that of the convolutions of the hose. The end fittings may be telescoped over or into other tubular fittings or nipples and then welded, brazed or soldered thereto. On the end fittings may be threaded.