From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Technical leaflet describing the construction, properties, and applications of Tite Flex all-metal hoses.
| Identifier | ExFiles\Box 85\4\ scan0072 | |
| Date | 24th September 1934 guessed | |
| TITE FLEX ALL METAL HOSE Tite flex Installed as Fuel and Air Line on Domestic Oil Burner In all types of flexible tubing either a twisting action or torsion strain has a tendency to produce a movement in the joint which will in time cause it to leak. It is, therefore, important that any metal hose installation should be free from twisting or torsion strains. A flexible connection should not be considered indestructible because it is made of metal. The extreme strength of Tite flex construction admits of the use of very thin metal, which gives a weight per foot that is much less than any other metal or combination hose that will do equal work. The curvature of Tite flex readily conforms to the accepted standards for flexible metal hose, in fact the minimum permissible diameter of bend is decidedly less than with the interlocked type of tubing of equal diameter. No bending of a Tite flex tube within reasonable limits stresses the metal beyond its limit of elasticity, as the degree of flexure at any one segment is very small. Tite flex line, showing double braid and inner tube for Aeroplane Service. 11 TITE FLEX ALL METAL HOSE Tite flex Installed as Petrol, Oil and Air Fuel Lines on Trucks Tite flex tubing can be made of various metals, the standard product being brass. The metal used in the manufacture of Tite flex is a special composition, made from selected materials rolled with exactness and heat treated, which insures a uniform finished product. Tite flex is made of very thin metal, the thickness varying with the diameter of the tubing. The wall thickness can be increased in special applications requiring unusual pressures where the standard tubing cannot be used. Information pertaining to other metals furnished will be given on request. Cross Section of Tite flex All-Metal Tubing without braid, showing fixed seam and the convolutions which act as diaphragms to produce flexibility within the metal tube. - While developing this improved type of flexible all-metal tubing, consideration was jointly given to an armour or covering to protect the inner tube in commercial use. Our braid material, proportions and designs, were skillfully worked out to give the maximum amount of strength and durability and still maintain the proper degree of flexibility for the specific service requirements. These coverings consist of a tubular braid of flat narrow bronze strips, or a basket woven casing of fine bronze wire. The braided covering on Tite flex prevents elongation when subjected to pressure, protects the tubing against abuse in handling, restricts the bending to definite limits, and offers a predetermined resistance against twisting. 4 | ||