Патент USA US2405057код для вставки
July 30, 1946- A, RIOSENS'ITEIN EPAL 2,405,057 MAKING INSULATED WIRE Filed Sept. 10, 1942 2A VON 2/ /4 WA "r52. Pecan/VG IN VEN TORS Patented July 30, 1946 2,405,057 UNITED STATES PATENT OFFICE‘ 2,405,057 -MAKING INSULATED WIRE Aaron Rosenstein, New York, and Harry Dolan, Brooklyn, N. Y., assignors to Rosenstein Bros., New York, N. Y., a ?rm composed of Aaron Rosenstein, Charles Rosenstein, and Irving J. Fuller, partners Application September 10, 1942, Serial No. 457,842 1 Claim. (Cl. 154-226) 1 2 This invention relates to insulated wire and a method of manufacturing the same. Insulated wire consists usually of a copper core which is enclosed in a rubber tube and a textile sheath. Present day methods involving a sep arate manufacture of the textile and rubber cov erings are expensive and consume a great deal of time. percha or a solution of furfural, cellulose acetate and phenolic resin. The elastic thread 6 may be extruded through an opening ‘I of a bottom por tion or spinneret 8 constituting a part of a tank 9. The tank 9 is immovable and receives its so lution I0 through a pipe I l. The bottom portion 8 of the tank is rotated in the direction of an arrow l3 by a pulley l2 driven by an endless belt M. The rotary portion or ele Our copending application pertaining to “Mak ing covered threads,” ?led September 10, 1942, 10 ment 8 is carried by a sleeve I5 and is separated from a ?ange l6 of the immovable tank 9 by a Ser. No. 457,843, Patent No. 2,355,471, dated Au packing IT. The sleeve I5 is carried by the flange gust 8, 1944, describes the manufacture of a cov ered thread by continuously wrapping an arti?cial I6. A tube [8 is integral with the rotary bottom thread, as it is being extruded, around a core 15 8 and extends through the top IQ of the immov Which may consist of an elastic thread. An object of the present invention is to adapt able tank 9. As the wire 5 is drawn through the tube l8, the method described in said patent application the bottom portion 8 is rotated to wind the elastic to the manufacture of insulated wire. thread 6 which is extruded through the Opening Another object is the provision of a simple, inexpensive and effective method of manufactur 20 1, upon the wire 5. The wire 5 carrying the thread 6 is passed ing insulated wire. through a heated tube 26 thereby baking the A further object is the provision of insulated thread 6. Then the Wire is drawn through an wire having a permanent, ?rm and durable cover other tube IBB carried by a rotary spinneret 85 25 which is suspended from a tank 90. The spin ing, sheathing or coating. Other objects of the present invention will be come apparent in the course of the following speci?cation. The objects of the present invention may be realized by utilizing freshly extruded non-elastic neret 80 is rotated in the direction of an arrow 20 by a pulley l2!) driven by an endless belt I40. The spinneret 80 has an extrusion opening 16. A so-called “soup” or arti?cial-thread solution and elastic threads as coverings for the insulated 30 22 is introduced into the tank 90 and spinneret 80 through a pipe I Hi. An arti?cial thread 21 which is freshly extruded through the opening being continuously wound upon or wrapped 70 is wound upon the windings of the insulating around an elastic wrapping of the wire, or vice versa. The elastic and non-elastic coatings may thread 6. Then the wire 5 carrying an insulating winding be applied to the wire in a continuous operation. 35 5 and windings of an arti?cial thread 2| is passed The invention will appear more clearly from through an impregnating or waterproo?ng solu the following detailed description when taken in tion 22 situated in a container 23. The wire connection with the accompanying drawing show passes over a pulley 24 and is drawn in the di— ing, by way of example, a preferred embodiment wire, the freshly extruded non-elastic thread of the inventive idea. In the drawing: ' 40 rection of an arrow 25. _ Figure 1 is a diagram illustrating a method of manufacturing insulated wire. Figure 2 is a diagram illustrating a somewhat different method. Figure 3 shows diagrammatically an insulated wire. Figure 1 of the drawing illustrates a conduct ing wire 5 which may consist of a single core or of a plurality of braided or interwoven wire ele ments made of copper, aluminum or the like. The wire 5 is covered in the course of one step of the process by a covering 6 consisting of a Figure 2 illustrates the coating of a wire 5 by ‘a layer 21 of an insulating material 28. The wire passes through a tapered core tube 29 carrying an electric heater 34 and situated in a container 30 having an extrusion opening 3| and ?lled with the plastic insulated material 28. A piston 33 movable within the cylinder or container 39 is used to compress the plastic material 28 at the time when it is applied to the wire 5. Thus a thin concentric coating 21 is applied under pres sure to the wire 5 as it passes through the open ing 3 I. The coated wire is passed through a heater 25 and then a freshly extruded arti?cial thread 2| able plastic insulating material, such as gutta 55 is wound upon it. The thread 2| emerges out freshly extruded rubber compound or other suit 2,405,057 3 4 of the rotary spinneret 80 while the coated wire passes through the tube I80 extending through the tank 99 and the spinneret 80. The windings a coating 2| of arti?cial non-elastic thread in a ?rst operation, and then the layer 6 of rubber may be wound upon the coating 2|. What is claimed is: The method of manufacturing insulated wire which comprises, in combination, continuously extruding an insulating materia1 and winding it of the arti?cial thread 2| may be impregnated or otherwise treated in the usual manner. It is apparent that the invention shown above has been given by Way of illustration and not by Way of limitation and that the methods and upon a conducting metal core, baking the insu lating winding, continuously extruding a non articles described above are subject to wide vari ation and modi?cation without departing from H) elastic arti?cial thread and winding it upon the the scope or intent of the present invention. All of such variations and modi?cations are to be in eluded within the scope of the present invention. ' For instance, the wire 5 may be provided with _ ' insulating layer, and then water proo?ng the arti?cial thread covering. AARON ROSENSTEIN. HARRY DOLAN.