Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2659932 A
Publication typeGrant
Publication dateNov 24, 1953
Filing dateApr 24, 1951
Priority dateApr 24, 1951
Publication numberUS 2659932 A, US 2659932A, US-A-2659932, US2659932 A, US2659932A
InventorsOwen A Mcnamee
Original AssigneeUnited States Steel Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Extruding apparatus
US 2659932 A
Images(2)
Previous page
Next page
Description  (OCR text may contain errors)

M NAMEE DZNG APPARATUS I Nov. 24, 1953 -2 Sheets-Sheet 1 Filed p il 24, 1951 Nov. 24, 1953 o. A. MGNAMEE 2,659,932

EXTRUDING APPARATUS Filed April 24, 1951 2 sp ts-sheet 2 lawentor: flmw A. M/VQML E,

place by means of a die holder 36 threaded into an opening 38 in the die head 2. The exit end of the male die 24 is rounded at 39 and tapers inwardly toward the exit end. The female die is provided with a similarly tapered portion 40 adjacent its entry end. The female and male dies are spaced apart to provide a side opening or orifice 42 between the portions 39 and 40. The female die 34 is provided with an axial opening M having a size and shape substantially the same as that of the finished cable. The die head 2 is provided with an opening 42 of such a size that insulating material R can completely surround the die holder IS.

The operation of my device is as follows:

The cables and strand S are pulled through the dies 24 and 34 in the usual manner and the screw 8 is rotated to feed insulating material R through the openings 30 and the orifice 42. Insulating material R is extruded around the ground strand S through the opening 28, the exit end of which determines the thickness of insulating material around the strand S. As the conductors C and strand S pass from the exit end of male die 24 insulating material R. is extruded around the entire assembly through the orifice t2 and the die opening 44.

In making a twin conductor cable without the ground strand S, the insulating material R will be extruded between the conductors C in the same manner as described above to form the bridge wall. In the same manner the insulating material may be extruded into valleys between conductors in any type of cable.

While one embodiment of my invention has been shown and described, it will be apparent that other adaptations and modifications may be made without departing from the scope of the following claims.

I claim:

1. Apparatus for extruding an insulating material around a pair of conductors having a substantially rectangular ground strand therebetween to form a cable, which comprises a male die, said male die having two spaced apart substantially circular axial openings therethrough one for each of said conductors and a substantially rectangular axial central opening between the circular openings for receiving the ground strand, said male die having a side opening therein extending outwardly and rearwardly from each side edge of said central opening for receiving insulating material, each of said side openings being disposed at an acute angle to the axial openings in the male die, a female die surrounding the exit end of said male die and spaced therefrom to provide an orifice for the insulating material, said female die having an axial opening therein for receiving the conductors, ground strand and insulating material, said female die extending beyond the exit end of said male die, the exit end of the opening in the female die having a size and shape substantially the same as that of the finished cable, and means for feeding insulating material around said male die from the entry end thereof through said side openings and orifice.

2. Apparatus for extruding an insulating material around a pair of conductors having a substantially rectangular ground strand therebetween to form a cable, which comprises an extruding head having an opening therein for receiving said insulating material and axially aligned threaded openings communicating with said first named opening, an elongated male die holder threaded into one of said threaded openings and extending through said first named opening toward the second of said threaded openings, said die holder having an axial opening therein for receiving said conductors and ground strand, a male die supported by the end of said die holder adjacent the second threaded opening, said male die having two spaced apart substantially circular axial openings therethrough one for each of said conductors and a substantially rectangular axial central opening between the circular openings for the ground strand, said male die having a side opening therein extend ing outwardly and rearwardly from each side edge of said central opening for receiving insulating material, each of said side openings being disposed at an acute angle to the axial openings in the male die, a female die threaded into the second threaded opening, said female die surrounding the exit end of said male die and spaced therefrom to provide an orifice for the insulating material, said female die having an axial opening therein for receiving the conductors, ground strand and insulating material, said female die extending beyond the exit end of said male die, the exit end of the opening in female die having a size and shape substantially the same as that of the finished cable, and means for feeding insulating material from said first named opening through said side openings and orifice.

3. Apparatus for extruding an insulating material around a multiple conductor cable comprising a male die having an axial opening therein L for each of the conductors to guide their passage therethrough, a smaller axial opening be tween adjacent axial openings, said male die having a side opening therein extending outwardly and rearwardly from each of said smaller openings for receiving insulating material, each or" said side openings being disposed at an acute angle to the axial openings in the male die, a female die surrounding the exit end of said male die and spaced therefrom to provide an outwardly and rearwardly extending opening for the insulating material, said female die having an axial opening therein for receiving the multiple conductor cable and insulating material, said female die extending beyond the exit end of said male die, the exit end of the opening in the female die having a size and shape substantially the same as that of the finished cable, and means for feeding insulating material around said male die from the entry end thereof through said outwardly and rearwardly extending openings.

4. Apparatus for extruding an insulating material around a multiple conductor cable comprising an extruding head having an opening therein for receiving said insulating material and axially aligned threaded openings communicating with said first named opening, an elongated male die holder threaded into one of said threaded openings and extending through said first named opening toward the second of said threaded open ings, said die holder having an axial opening.

therein for receiving said conductors, a male die supported by the end of said die holder adjacent the second threaded opening, said male die having an axial opening therein for each of the conductors to guide their passage therethrough and a smaller axial opening between adjacent axial openings, said male die having a side opening therein extending outwardly and rearwardly from each of said smaller openings for receiving 7 insulating material, each of said side openings being disposed at an acute angle to the axial openings in the male die, a female die threaded -into the second threaded opening, said female ing therein for receiving the multiple conductor cable and insulating material, said female die extending beyond the exit end of said male die, the exit end of the opening in the female die having a size and shape substantially the same as that of the finished cable, and means for feeding insulating material from said first named opening through said side openings and orifice.

OWEN A. McNAMEE.

References Cited in the file of this patent UNITED STATES PATENTS Number Number Name Date Van Gestel Apr. 8, 1888 Flint July 15, 1924 Alderfer June 28, 1927 Trebes May 24, 1932 Shaw et a1. Dec. 11, 1934 Wermine Feb. 28, 1939 Grana Sept. 12, 1950 FOREIGN PATENTS Country Date Great Britain Apr. 4, 1941 Switzerland Mar. 16, 1942 Canada Mar. 8, 1949

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US380610 *Apr 3, 1888 Jean t
US1501764 *Apr 8, 1922Jul 15, 1924Warren E FlintCoating device for metallic strips
US1633620 *Oct 20, 1926Jun 28, 1927Alderfer Sterling WProcess for the manufacture of tire beads
US1859901 *Apr 5, 1930May 24, 1932Bell Telephone Labor IncExtruding apparatus
US1984038 *May 20, 1933Dec 11, 1934Us Rubber CoElectrical cable and cord
US2149002 *Jan 18, 1936Feb 28, 1939Belden Mfg CoMethod and apparatus for making divisible electrical conductors
US2522364 *Feb 27, 1948Sep 12, 1950Asea AbArrangement in manufacturing of coated welding electrodes
CA455025A *Mar 8, 1949Int Standard Electric CorpManufacture of insulated electric wire and cable
CH218424A * Title not available
GB535311A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2926729 *Sep 25, 1956Mar 1, 1960Zanini LuigiProcess to embody wooden laths with coating of plastic material
US2945278 *Apr 10, 1956Jul 19, 1960Pipe Line Service CorpCoating apparatus
US2974713 *Jun 10, 1957Mar 14, 1961Porter Co Inc H KMethod of continuously producing reinforced hose
US3166329 *Sep 11, 1961Jan 19, 1965James GarveyApparatus and method for inserting indicia in soap
US3252183 *Jan 8, 1964May 24, 1966Western Electric CoChannelled extrusion die
US4050867 *Dec 18, 1975Sep 27, 1977Industrie Pirelli Societa Per AzioniExtrusion head for extruding plastomeric or elastomeric material on filaments
US4212612 *Jul 5, 1979Jul 15, 1980Western Electric Company, Inc.Apparatus for enclosing a plurality of conductors in a partitioned jacket
US4221756 *Sep 15, 1978Sep 9, 1980Western Electric Company, IncorporatedPlastic extrusion
US4277642 *Jan 9, 1980Jul 7, 1981Western Electric Company, Inc.Cordage having a plurality of conductors in a partitioned jacket
US5573852 *May 26, 1995Nov 12, 1996Vorspann-Technik Gesellschaft M.B.H.Tensioning bundles comprising a plurality of tensioning members such as stranded wires, rods or single wires
Classifications
U.S. Classification425/114
International ClassificationB29C47/28
Cooperative ClassificationB29C47/28
European ClassificationB29C47/28