US1956576A

US1956576A - Device for applying coatings to electric conductors

Info

Publication number: US1956576A
Application number: US646416A
Authority: US
Inventors: Anthony P Hinsky
Original assignee: PYRO PRODUCTS CORP
Current assignee: PYRO PRODUCTS Corp
Priority date: 1932-12-09
Filing date: 1932-12-09
Publication date: 1934-05-01
Anticipated expiration: 1951-05-01

Description

May 1, 1934. I A. P. HINSKY DEVICE FOR APPLYING COATINGS To ELECTRIC CONDUCTORS Filed Dec. '9, 1932 4 l I "I L I ll? 21 25 INVENTOR.

Patented May 1, 1934 UNITED STATES PATENT QFFEE DEVICE FOR APPLYING COATINGS TO ELECTRIC CONDUCTORS Application December 9,1932, Serial No. 646,416

16 Claims.

This invention relates to mold and centering devices used in applying even thickness coatings on elongated strands such as insulated conductors; and the object of the invention is to provide a device of the class described employing radially adjustable jaw members, the inner ends of which intermesh or have tongue and groove connections with each other to form between the inner ends of said jaws mold chambers or passages of predetermined cross sectional contour; a further object being to provide the inner ends of said jaw members with radially arranged fins or blades, the inner ends of which normally project beyond the inner ends of the jaw memers or into the passage formed between the jaw members so as to form centering fingers or fins for centering a strand or conductor in said mold chamber to care for the symmetric arrangement of a compound on such strand or conductor in passing through the device; a further object being to provide means for independently or 001- lectively adjusting the jaw members with respect to each other to control and regulate the size of the mold chamber formed between the inner ends of said jaw members; and with these and other objects in view, the invention consists in a device of the class and for the purpose specified, which is simple in construction, eflicient in use, and which is constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which:

Fig. 1 is a diagrammatic view illustrating the method of applying a coating to an electric conductor with one of my improved devices.

Fig. 2 is a transverse, sectional view of the device shown in Fig. 1 with the conductor detached.

Fig. 3 is a face view of the device shown in Fig. 2 with part of the construction broken away and in section.

Fig. 4 is a perspective view of one of a number of jaw members which I employ.

Fig. 5 is a view similar to Fig. 2 showing only a part of the construction and showing a modification.

Fig. 6 is a face view of the modified structure shown in Fig. 5 with part of the structure broken away; and,

Fig. 7 is a sectional view on the line 77 of Fig.1.

In the construction shown in Figs. 1, 2 and 3 oi the drawing, I provide a centering and mold device 10 consisting of a body portion 11 having a large central opening 11a and a peripheral wall 12, in which is rotatably mounted a beveled pinion 13, the outer end of which has a socket 1311 by means of which a key may be inserted for rotating the pinion to rotate a disk 14 arranged on one side of the body 11, the disk having beveled teeth 14a engaged by the pinion 13.

On one face of the disk 14 is a continuous spiral thread 15 with which the teeth 16 on the inner ends of a plurality of jaw members 17 operate to provide for radial adjustment of the jaws in the body 10 or in a plate 18 arranged outwardly of the disk 14. The plate 18 has radial slots 18a in which the jaws operate and the inner faces of said slots are provided with key ways 1819 operating in grooves 17a on opposite sides of the jaws 17 to key said jaws against displacement from the body 11.

In the construction shown, three of the jaw members 17 are employed, and each of these jaws is of identical construction so that the brief description of one jaw will apply to the others. Adjacent the outer faces of the jaws are inwardly projecting

tongue portions

19 and 20, one tongue 19 being employed, and two tongues 20, the tongues 20 being spaced apart to form a recess 21 receiving the tongue 19 of an adjacent jaw. The inner ends of these tongues have curved or arc-shaped surfaces 23 which form between all of the jaws a mold chamber or passage 23a which is circular in cross sectional form as is indicated in Fig. 3 of the drawing. Between the

tongues

19 and 20 is a radial split 24 in which is supported a fin or blade 25 which extends at opposite sides of the tongues, and the inner ends of which project into the mold chamber or aperture formed between said jaws to provide centering fingers or fins for centering a strand or electric conductor in the mold chamber 23a.

With the construction shown in Figs. 1, 2 and 3 of the drawing, it will be understood that by rotating the pinion 13, which in turn rotates the disk 14, the jaws 17 may be adjusted inwardly and outwardly to decrease or increase the size of the mold chamber or passage 23a to adapt the device to strands or conductors of different sizes. In the different adjustments of the jaw members, the fins or blades 25 will at all times project into the resultant mold chamber.

In Fig. l of the drawing, I have diagrammatically illustrated one use of the device, and in said figure 26 represents an electric wire having a rubber coating 27, and fibrous jacket 28 which is preferably treated with a water and fireproof saturant or compound 29, and prior to passing into and through the centering and mold device 10, a coating 30 of a suitable compound is applied to the wire. In passing through the device 10, circumferentially arranged deposits 30a of the compound are arranged on the conductor, and these deposits will be of even thickness circumferentially of the conductor and between the deposits will be formed longitudinal recesses or channels 30b formed by the fins or blades 25. These recesses may be left upon the conductor and the conductor further treated with another compound which would enter the recesses 30%) to aid in keying or retaining the outer compound in connection with the compound 30 in accordance with the teachings in my prior application filed May 3, 1932, and bearing Serial Number 608,933.

However, in some instances where the coating 30 constitutes a final coating, it may be passed through an ironing or slushing die or device 31 which will mold or slush the deposits 3011 into the recesses 30!) and form a continuous coating of even thickness circumferentially of the conductor as at 300.

In using the coating 30, it will be understood that this coating may be of any desired material depending upon the results which are required in the finished product, and in some uses, this compound may be a colored compound applied to an insulated electric conductor previously treated with saturants or other compounds, and with my improved device excellent results are obtained in applying light colored compounds 30 over black saturants in accordance with the teachings of my prior Patent Number 1,887,851, granted November 15, 1932.

In Figs. 5 and 6 of the drawing, I have shown a slight modification in the method of operating the jaw members 17, and in this device, I have substituted for the pinion 13 and disk 14 independent worms 32 which are supported in the body 33 of the device and arranged radially thereof beneath the jaws 17, the worms being keyed against longitudinal movement by pins 34: operating in annular grooves 35 formed in the worms, and the worms are rotated by keys inserted in angular sockets 36 in the outer ends thereof.

With this construction, the worms 32 engage the teeth 16 of the jaws l7 and provide the radial adjustment of the jaws in the member 33. In the construction shown, four of the jaws 17 are employed, as will be apparent on a consideration of Fig. 6 of the drawing, and it will be understood that each jaw has an independent worm 32 for its adjustment, and the four jaws 1'7 will form a mold passage or aperture 23a at the inner ends thereof, and four of the fins or blades 25 will extend into this aperture to center the strand or conductor therein.

The construction shown and described herein constitutes an improvement on the structure shown and described in a companion application filed by me December 5, 1932, and bearing Serial Number 645,736. The outstanding feature of the present invention over the structural features disclosed in said earlier application resides in providing jaw members which are relatively adjustable with respect to each other to provide means for adjusting the size of the mold passage or chamber, thus adapting one device for use in connection with strands or conductors of various sizes, the limits of which are controlled solely by the size of the jaws and the number of jaws employed. At this time, it will be understood that any number of jaw members may be employed, and these jaw members may be increased and decreased in width and at the same time, the contour of the inner surfaces of the jaw members which mold the mold chamber may vary to suit strands or conductors of various cross sectional contour.

It will be noted that the jaw members 25 project a material distance beyond the

tongues

19 and 20 of the jaw members to provide long bearing surfaces which in addition to centering the strand or conductor in its passage through the mold chamber 23 also serves to straighten the strand or conductor and to remove any kinks that may be formed therein. This insures accurate formation of the coatings on the strands or conductors, as will be apparent.

It will be understood that while I have shown certain details of construction for adjustably mounting the jaw members, I am not necessarily limited to these details, and various other changes in and modifications of the construction herein shown and described may be made within the scope of the appended claims without departing from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. A mold device of the class described for applying coatings to elongated strands, said device comprising a jaw supporting member, three or more jaw members movable toward and from each other in said member, the inner surfaces of the jaw members being of predetermined contour, said jaw members having intermeshing portions to form in the adjustment of said jaw members with respect to each other a continuous annular mold chamber of predetermined size and contour.

2. A mold device of the class described for applying coatings to elongated strands, said device comprising a jaw supporting member, three or more jaw members movable toward and from each other in said member, the inner surfaces of the jaw members being of predetermined contour, said jaw members having intermeshing portions to form in the adjustment of said jaw members with respect to each other, a continuous annular mold chamber of predetermined size and contour, said jaw members slidably engaging said member, and means for adjusting said jaw members in said member.

3. A mold device of the class described for applying coatings to elongated strands, said device comprisinga jaw supporting member, three or more jaw members movable toward and from each other in said member, the inner surfaces of the jaw members being of predetermined contour, said jaw members having intermeshing portions to form in the adjustment of said jaw members with respect to each other a continuous annular mold chamber of predetermined size and contour,

said jaw members slidably engaging said member,

means for adjusting said jaw members in said member, and said means involving an element engaging all of said jaw members to provide collective and uniform adjustment of said jaw members toward each other.

4. A mold device of the class described for applying coatings to elongated strands, said device comprising a jaw supporting member, jaw members movable toward and from each other in said member, the inner surfaces of the jaw members being of predetermined contour, said jaw members having intermeshing portions to form in the adjustment of said jaw members with respect to each other a continuous annular mold chamber of predetermined size and contour, and blades supported on the inner ends of said jaw members and protruding into the mold chamber formed thereby to form centering devices for centering a strand in its passage through said mold chamberv 5. A mold device of the class described for applying coatings to elongated strands, said device comprising a jaw supporting member jaw members movable toward and from each other in said member, the inner surfaces of the jaw members being of predetermined contour, said jaw members having intermeshing portions to form in the adjustment of said jaw members with respect to each other a continuous annular mold chamber of predetermined size and contour, blades supported on the inner ends of said jaw members and protruding into the mold chamber formed thereby to form centering devices for centering a strand in its passage through said mold chamber, said blades extending at opposite sides of the jaw members to form long guiding surfaces for straightening the strand in its passage through said mold chamber.

6. A mold device of the class described for applying coatings to elon ated strands, said device comprising a jaw supporting member jaw members movable toward and from each other in said member, the inner surfaces of the jaw members being of predetermined contour, said jaw members having intermeshing portions to form in the adjustment of said jaw members with respect to each other a continuous annular mold chamber of *redetermined size and contour, blades supported on the inner ends of said jaw members and protruding into the mold chamber formed thereby to form centering devices for centering a strand in its passage through said mold chamber, said blades extending at opposite sides of the jaw members to form long guiding surfaces for straightening the strand in its passage through said mold chamber, said jaw members slidably engaging said member, and means for adjusting said jaw members in said member.

7. A mold device of the class described for applying coatings to elongated strands, said device comprising a jaw supporting member jaw members movable toward and from each other in said member, the inner surfaces of the jaw members being of predetermined contour, said jaw members having intermeshing portions to form in the adjustment or" said jaw members with respect to each other a continuous annular mold chamber of predetermined size and contour, blades supported on the inner ends of said jaw members and protruding into the mold chamber formed thereby to form centering devices for centering a strand in its passage through said mold chamber, said blades extending at opposite sides of the jaw members to form long guiding surfaces for straightening the strand in its passage through said mold chamber, said jaw members slidably engaging said member, means for adjusting said jaw members in said member, and said means involving an element engaging all of said jaw members to provide collective and uniform adjustment of said jaw members toward each other.

8. A device for applying coatings to elongated .strands to form an even and symmetric coating on the strand, said device comprising a body portion having a large central opening, jaw members mounted to move radially of said body portion and the inner ends of which extend into said opening, the inner ends of said jaw members having tongue and groove connections to form between said jaw members, an annular mold chamber of predetermined size and contour, means in said body for adjusting said jaw members toward and from each other, means for keying said jaw members in their adjustable movement, said jaw adjusting means involving a single member, the operation of which collectively moves all of said jaw members, and means on the inner ends of said jaw members projecting into the mold chamber formed therebetween to provide centering means for a strand passed through said mold chamber.

9. A device for applying coatings to elongated strands to form an even and symmetric coating on the strand, said device comprising a body portion having a large central opening, jaw members mounted to move radially of said body portion and the inner ends of which extend into said opening, the inner ends of said jaw members having tongue and groove connections to form between said jaw members, an annular mold chamber of predetermined size and con-- tour, and centering elements on the inner ends of said jaw members and extending into the mold chamber formed thereby for centering a strand passed through said mold chamber.

10. A device for applying coatings to elongated strands to form an even and symmetric coating on the strand, said device comprising a body portion having a large central opening, jaw members mounted to move radially of said body portion and the inner ends of which extend into said opening, the inner ends of said jaw members having tongue and groove connections to form between said jaw members, an annular mold chamber of predetermined size and contour, centering elements on the inner ends of said jaw members and extending into the mold chamber formed thereby for centering a strand passed through said mold chamber, and said elements being in the form of elongated plates extending at opposite sides of said jaw members forming long bearing portions for straightening the strand in its passage through the mold chamber.

.11. In the art of coating electric conductors, a mold device into and through which a conductor coated with a compound is adapted to pass to gage the thickness of the compound applied to the conductor, means involving a plurality of forming elements adjustable toward and from the conductor to adjustably control the thickness of the compound coating with respect to conductors of different sizes, and means for centering the conductor in its passage through said device.

12. A device for applying coatings to elongated strands to form an even and symmetric coating on the strand, said device comprising a body portion having a large central opening through which the strand to be coated is adapted to pass, jaw members mounted to move radially of said body portion and the inner ends or" which have concave, rounded surfaces, which extend into said opening, the inner end of each jaw member intermeshing with adjacent jaw members within said opening to form in the radial movement of said jaw members continuous circular openings of difierent sizes between the concaved inner surfaces thereof to adapt said jaw members to strands of different sizes.

13. A device for applying coatings to elongated strands to form an even and symmetric coating on the strand, said device comprising a body portion having a large central opening through which the strand to be coated is adapted to pass, jaw members mounted to move radially of said body portion and the inner ends of which have concave, rounded surfaces, which extend into said opening, the inner end of each jaw member intermeshing with adjacent jaw members within said opening to form in the radial movement of said jaw members continuous circular openings of different sizes between the concaved inner surfaces thereof to adapt said jaw members to strands of different sizes, and means in said body portion for adjusting said jaw members toward and from each other.

14. A device for applying coatings to elongated strands to form an even and symmethric coating on the strand, said device comprising a body portion having a large central opening through which the strand to be coated is adapted to pass, jaw members mounted to move radially of said body portion and the inner ends of which have concave, rounded suriaces, which extend into said opening, the inner end of each jaw member intermeshing with adjacent jaw members within said opening to form in the radial movement of said jaw members continuous circular openings of different sizes between the concaved inner surfaces thereof to adapt said jaw members to strands of different sizes, means in said body portion for adjusting said jaw members toward and from each other, means for keying the jaw members in 15. A device for applying coatings to elongated strands to form an even and symmetric coating on the strand, said device comprising a body portion having a large central opening through which the strand to be coated is adapted to pass, jaw

members mounted to move radially of said body portion and the inner ends of which have concave, rounded surfaces which extend into said opening, the inner end of each jaw member intermeshing with adjacent jaw members within said opening to form in the radial movement of said jaw members continuous circular openings of different sizes between the concaved inner surfaces thereof to adapt said jaw members to strands of different sizes, and means centrally of each jaw member and projecting into the circular opening formed by said jaw members for engaging and centering the strand in its passage therethrough.

16. In the art of coating electric conductors, a mold device into and through which a conductor coated with a compound is adapted to pass to ANTHONY P. HINSKY.