US 2263221 A
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Description (OCR text may contain errors)
\ Nov. 18, 1941. MERRlLL 2,263,221
NOZZLE FOR FUEL HOSE AND METHOD OF MAKING SAME Filed March 25 1939 Patented Nov. 18, 1941 NOZZLE FOR FUEL HOSE AND METHOD OF MAKING SAME Allan B. Merrill, Akron, Ohio, assignor to The B. F. Goodrich Company, New York, N. Y., a corporation of New York Application March 25, 1939, Serial No. 264,142
This invention relates to nozzles for fuel hose and to the methods of making the same and is especially useful in connection with hose for handling gasoline or other liquid fuel.
The principal objects of the invention are to provide an improved nozzle having flexibility, resistance to solvents, and electrical conductivity, to reduce noise in filling a tank, to eliminate abrasion of finish of the vehicle being filled, to reduce danger of fire and explosion, and to provide economy and convenience of procedure in manufacture.
These and other objects will appear from the following description and the accompanying position of the body and to promote pliability of the article these strips are preferably in the form of helically coiled wires arranged to extend lengthwise of the body and with portions of their coils at the surface of the body Where they are exposed for electrical contact whereas other parts of the coils are looped through the composition of the body, the wire helix being of relatively small diameter so as to be enclosed within the wall of the tubular body.
At the coupling end of the body, the exposed portions of the coils are in contact with the coupling sleeve, being held in contact by the clamping of the body between the sleeve memdrawing. bers.
Of the drawing: In the preferred form of nozzle, the helically Fig. 1 is a side elevation of the nozzle in its coiled conductors extend along the longitudinal preferred form, parts being broken away and ribs of the body so as to expose a greater area parts shown in section. of the coils, the surface of the coils being of sub- Fig. 2 is a cross sectional view of the same stantially the same contour as that of the rib. taken on line 2-2 of Fig. 1. This relation assists in holding the conductors in Fig. 3 is a cross sectional view of the same proper position during the molding of the body taken on line 3-3 of Fig. 1. as the coiled conductors may be laid in grooves Fig. 4 is a perspective view showing the nozzle provided in the mold cavity for forming the body in use in filling the tank of an automobile from 5 and an extruded blank of composition of tubular a gasoline pump. form may be assembled therewith in the mold. Referring to the drawing, the numeral Ill the material of the blank being forced around designates a tubular flexible nozzle body of and through the coiled conductors during the rubber-like moldable plastic dielectric material molding process by heat and pressure applied to having a high resistance to gasoline and other the mold so as to embed the conductor in the oils and solvents, such as suitably compounded composition. After the molding operation, the rubber compositions, polymerized vinyl chloride body may be buffed, if necessary, to expose the and mixtures thereof, neoprene compositions, coils of the conductors. While the method of polymerized olefine polysulphide compositions, embedding the coiled conductors in the material and oil resistant butadiene polymers such as 00- of the tubular body is especially useful in the polymers of butadiene and acrylic nitrile. The manufacture of such nozzles, it may also be eminner surface of the nozzle is preferably smooth ployed for embedding such a conductor in other so as to afford little resistance to flow of the articles. liquid whereas the outer surface is preferably Variations may be made without departing formed with upstanding longitudinal ribs II to from the scope of the invention as it is defined provide a more cushioned surface where the by the following claims. nozzle contacts with the filler opening of the tank I claim: and to define grooves therebetween through 1. A flexible tubular body of rubber-like matewhich air may escape as the tank is being filled. rial, and a helix of continuous electrically con- A coupling l2 of metal is secured to the base of ductive wire embedded therein along a surface the nozzle body and preferably comprises a polythereof with portions only of its coils exposed at gonal outer sleeve l3 which may be engaged by said surface, said body being formed with a longia wrench for manipulating the puzzle, a threaded tudinal rib, and said coils being exposed along portion [4 for engaging the coupling of the filling the surface of said rib. hose, and. an inner sleeve I5 expanded within the 2. A flexible hose nozzle comprising a tubular body to clamp the body to the outer sleeve. body of rubber-like material having a longitudi- To provide for conducting electrical charges nal rib on its outer surface, a helical coil of away from the coupling, one or more conductive electrically conductive wire embedded in said strips l6 of metal or other electrically conductive body Within said rib, and an electrically conducmaterial extend along the outer surface of the tive coupling member at the end of said body body from the coupling to contact with the filler and in electrical contact with said wire, poropening of the tank being filled and thereby to tions of the coils of said wire being exposed only connect the tank to the coupling electrically. at the surface of said rib for electrical contact. These strips are embedded in the wall of the nozzle and for further anchorage in the com- 0 ALLAN B. MERRILL.