US2622808A - Serving machine - Google Patents

Description

Dec. 23, 1952 c. J. ROHLAND 2,622,808

SERVING MACHINE Filed Dec. 15, 1948 2 SHEETSSHEET l INVENTOR.

aid JZZZM ec. 23, 1952 c J RQHLAND 2,622,808

SERVING MACHINE Filed D60. 15, 1948 2 SHEETS-SHEET 2 IN VEN TOR.

TEZW aL/J Patented Dec. 23, 1952 1 UNITED STATES PATENT OFFICE SERVING MACHINE Curt J. Rohland, Seekonk, Mass., assignor to Universal Winding Company, Providence; R. I., a corporation of Massachusetts Application December 15, 1948, Serial No. 65,358

however, provide a novel type of machine for.

winding short lengths in which the tool turns around the work, but in which the work is preferably manually moved for'winding purposes relative to the rotating tool. My invention is particularly adapted for use in the type of winding usually employed for covering the end of a cylindrical element which has been formerly performed by hand by girl operators, and an object of my invention is to provide a small winding machine in which the process of winding may be as much in control of the operator as in hand winding and in which the winding is at all times visible to the operator, so that the operator may be able to freely exert his control over the winding.

A further object of my invention is to provide a machine which is at least three times faster in its operation than hand winding and one which can be readily manipulated quickly by even an operator of low mentality, without any hardship on the operator.

A further object of my invention is to provide a device in which the operation is at all times entirely within the control of the operator. as to the length to be covered, the spacing of the winds, the tension applied and otherwise.

A-further object of my invention is to provide a winding on such lengths, which is many times more even, which is uniform, tight and which makes a much better commercial product than one produced by any hand wound process.

As stated, the primary use'of my invention is in covering the single ends of a two wire electric cable. In a two wire cable of this description, each wire is usually covered with a layer of fluffy insulating material such as asbestos or fiber glass for insulation and fire-proof purposes, and when the outer braided covering covering both insulated wires is cut off, the fiber glass or asbestos insulating covering immediately adjacent the rubber covered wire strands, tends to fluff away and become separate from each individual wire,

10 Claims. (Cl. 2427) and up to the present time the operators hav had to hand wind a helical covering of cord around each respective wire and again around the two or more wire braided covering adjacent the separation of said wires and tie a knot in the crotch formed by the separated wires. This has been a slow process and due to the fact that each operator has had to hold the parts in her hands, it has produced a decidedly non uniform and relatively unattractive product at the great expense inherent in hand winding. Employing my machine, however, the operator is enabled to apply a winding around each individual wire, firmly binding the asbestos or fiber glass or other loose insulating material around the rubber covered wire and also around the common braid covering the two or more wires for a distance above the crotch separating the two or more wires.

When the winding is complete, the operator may merely tightly wind the end several times around the crotch and slip it through to wedge it tight,

without the necessity of tying a separate knot,

thereby providing an attractive and workmanlike job.

In winding such material, I have found that the speed of winding is increased at least three times and a much better product is provided.

Further features of my invention relate to the specific construction of my improved winding machine. For this purpose, I rotate a tubular spindle having a transparent front end having a strand delivery hole immediately adjacent said front end, in any suitable manner, such as by an individual variable speed motor, and I feed the continuous run of cord axially along said rotating spindle so that its end may project inwardly of said cord delivery hole, so that when the end of a cylindrical object is inserted within the front end of the transparent tubular part of the spindle, it may be evenly wrapped with cord.

I also provide means to guide the cord so that it may rotate axially over the outer surface of the spindle as the latter rotates while being axially fed along said surface, with'means to properly tension the cord.

I believe I am the first to provide such a device employing a rotating transparent tubular spindle with the end of the cord fed internally of the end of the tubular spindle as it rotates for windin an object inserted within the end of the tutating spindle and guiding the cord axially along A further feature of my invention resides in the construction of means I provide to rotate the spindle, which will provide the desired tension, yet yield in case of an emergency, comprising an elastic band.

These and such other objects of my invention as may hereinafter appear will be best understood from a description of the accompanying drawings which illustrate an embodiment thereof.

In the drawings,

Fig. 1 is a perspective view of one embodiment of my invention suitably mounted on a stand.

Fig. 2 is a side elevation of the embodiment of my invention shown in Fig. 1, with the tubular spindle, its bearings, and pulley shown in section.

Fig. 3 is an exploded disassembled perspective view of the parts of my machine shown in Figs. 1

and 2.

Figs. 4 and 5 diagrammatically illustrate my invention employed for winding the individual wires of a two wire electric cable, Fig. 4 showing the end of one wire inserted within my rotating transparent tubular spindle to Wind a helical covering of cord around it, binding the insulating material firmly to the rubber covering of the individual wire, with the opposite unwound wire having the loose insulating material thereon also being indicated, and Fig. 5 being a perspective view like Fig. 4 showing how the adjacent braided end of the double wire braided cable adjacent its split ends is supplementally covered with cord to add to the strength of the binding.

Fig. 6 is a perspective view of the end of a two Wire insulated cable having a covering wound by my improved machine.

In the drawings, wherein like characters of reference generally indicate like parts throughout, It! generally indicates a machine for helically winding a continuous run of cord around a substantially cylindrical element, constructed in accordance with my invention. Broadly, my invention includes the supporting means I2 which may comprise any suitable type of support, a tubular spindle 14 having a transparent front end I6 r0- tatably mounted on said supporting means I2, with a radial cord delivery hole I8 preferably immediately adjacent the front end 20 thereof, suitable means to rotate said spindle and suitable means to guide a continuous run of cord 22 axially along the outer surface of said rotating spindle H, with the end 24 thereof projecting radially within said hole I8 to wind it helically around a substantially cylindrical element temporarily inserted within the front end of said tubular spindle as shown in Figs. 4 and 5.

The stand 12 may be mounted on any suitable object, such as the fiat element 26 which may comprise a suitable table top or otherwise. In my preferred embodiment, the stand l2 has a substantially vertical wall 28, having the supporting legs 30 projecting inwardly therefrom which may be secured in any suitable manner to the base 26 by screws or otherwise.

In my preferred embodiment, I provide the electric motor, which in the embodiment shown comprises a variable speed rheostat controlled H. P. motor 32 capable of -5000 R. P. M., suitably secured to said vertical wall 28 in any suitable manner such as by screws or otherwise. I have found that a suitable efficient operating speed is around 800 R. P. M. Said lectric motor has the I drive shaft 34, having a portion projecting forwardly therefrom as shown. Suitable bearing means are provided for supporting the transparent tubular spindle l4, in the embodiment shown comprising the front bearing arm 36 and the rear bearing arm 38, projecting inwardly of said motor 32, having bearing holes 40 and 42 in axial alignment with each other and with said motor drive shaft 34. The tubular spindle l4, having the transparent front portion !6, has th radial cord delivery hole [8 therein preferably immediately adjacent its front end 20 forming guiding means to direct a cord or strand radially thereinto, and extends through said respective bearing holes 40 and 42. The spindle I4 is preferably made of a suitable transparent plastic such as methylmethylacrylate, cellulose acetate, etc., although it may be constructed of any suitable transparent material such as glass, Pyrex glass, etc.

In the embodiment shown, I provide a rear bearing 46 comprising a cylindrical plug made of fibre, rubber, metal, plastic or other suitable bearing material contained within the rear end 48 of said spindle [4 extending through said rear bearing hole 42, having a radial cord hol 50 in rear of said spindle and in front of said rear arm 38 and bearing hole 42, and an axial cord hole 52 extending from said radial hole 50 to the rear end of said bearing. Said bearing has an extended sleeve portion 54 fitting within said bearing hole 42 and may have the lock collar 55 mounted on the rear end thereof in rear of said bearing hole 42 to retain the tube on the support.

I also provide a front bearing 58, comprising a sleeve 60, having an enlarged rear portion 62 revolvable in said front bearing hole 40, a central circumferential separating fin 64 and a front hub portion 66. Said sleeve is provided with the axial cord feeding hole 68 in alignment with said rear bearing radial hole 50 and said front cord delivery hole [8. Said bearing may also be made of metal, fibre or any other suitable bearing material.

I mount the drive pulley 10 on said hub and I provide a drive band 12 extending around said rrotor drive shaft 34 and the rim of said pulley While any suitable type of a drive band may be employed, I preferably employ an elastic band for this purpose, which will maintain the requisite friction at all times and yet yield or slip in case of a jam, without breakage of the cord.

If desired, the rear supporting arm 38 and its respective bearing 46, may be omitted provided the continuous run of cord 22 is suitably axially guided to the feeding hole 68 which may be in the pulley itself instead of the bearing, if desired. In the embodiment shown, however, I preferably employ to supplementally axially guide the cord 22, a cord guide rod 14 projecting upwardly from said stand I: directly in rear of said axial guide hole 52 in said rear bearing 46, so that the cord may be passed around said guide rod to be properly aligned within said axial cord feeding hole 52, and if the rear bearing 38 is omitted, said rod is so spaced as to be in alignment with the pulley axial guide hole 68.

I also may provide a guide rod 16 projecting obliquely forwardly from said stand I 2, having a cord guide eye 18 thereon to guide the cord to said rear guide rod 14.

If desired, the pulley 10 and its respective bearing 60 may also be omitted, with the belt or band 12 passing directly around the spindle l4.

The operation of my invention is obvious from the above descritpion. The cord of any desired nature, elastic or otherwise, from any suitable source of supply, is passed through the guide eye :18 around the guide rod 14, through the axial hole 52, out the radialhole 50', along the outer surface of the spindle M, as shown, through the axial guide hole 68 to the delivery hole I8, with its end 24 inserted radially through said'radial delivery hole. The end 89 of the cord then may be grasped by the opposite hand so as to apply the required tension to the cord. The end 92 of the object to be covered, such as the wire 82 of the double wire'cable 84 shown in Figs. 4 and and will wrap or serve the helical coils 92 of cord around the inserted end inthe manner shown in Fig. 4. The speed of insertion of the end 82 within the end of the rotating spindle, as well as the speed of the motor, regulates the space between the coils 92 of the covering cord. The end 182 is preferably reciprocated several times axially within the tubular spindle [4 to provide covered coils simulating a diamond shape in proportion to the thickness of the object being covered. If desired, the end 82 may be so inserted as to permit the coils 92 to be substantially adjacent each other or spaced apart as in the manner shown. When one end of the wire 82 has been covered, the, other end or wire 83 may then be inserted within the tubular spindle M and the operation repeated to cover that end. Then, after both ends 82 and 83 have been covered with coils of cord 92 as shown in Fig. 5, the entire cable is inserted within the end of the spindle so that the cable immediately adjacent its split or crotch 94 may be covered with the supplemental strengthening coils 96 of cord which may be similarly spaced from each other in the manner just explained. Then, if desired, after the cable is withdrawn from the machine, the free end 98 is wrapped around the crotch in the few oblique coils indicated at I and is passed through them and broken off, binding said end 98to said coils 100 without a separate I knot.

As stated hitherto, if desired, other types of generally cylindrical objects capable of fitting within the rotating spindle than the cable split ends shown may be similarly covered with cord coils.

It is apparent that I have provided a novel type of machine for helically winding a continuous run of cord around a substantially cylindrical element, with the advantages explained above.

It is understood that my invention is not limited to the specific embodiment shown and that various deviations may be made therefrom without departing from the spirit and scope of the appended claims.

What I claim is:

1. Apparatus for serving a strand of material around a core comprising a hollow rotating member, bearing means mounting said member for rotation about a predetermined axis, means for rotating said member, means for directing a strand from a supply thereof longitudinally of said rotating member on the outside thereof and through said bearing means, means on said rotating member to cause the portion of said strand extending along said member to pass through said bearing means and be rotated by said rotating means about said axis, and guiding means to direct said strand in a generally radial direction 6 into the hollow interior of said member towards said axis whereby said strand is wound upon @a core inserted in the figure of revolution of said last mentioned means.

2. In an apparatus for serving a strand of material around a core, the combination comprising a hollowspindle, a bearing mounting said spindle for rotation about its axis, means for rotating said spindle, means. including a part of said bearing for directing a strand from a supply thereof through said bearing, guiding means for directing the strand into the interior of the spindle at one end and then radially outward therefrom, and guiding means to direct said strand radially into the hollow interior of said spindle at its opposite end, whereby said strand is wound upon a core inserted in said last-mentioned hollow end of the spindle.

3. In an apparatus for serving a strand of material around an elongate core, a tubular spindle for receiving the core, means for mounting said spindle to rotate about its longitudinal axis, means for rotating said spindle, means for directing a strand leading from a supply into the rearward hollow end of the spindle, an opening in the side of the spindle for directing the strand radially outward from its interior to feed longitudinally of its axis along the periphery of the spindle, and guiding means at the forward end of the spindle for directing the strand radially into its interior to adapt it to be wound around the core projected into the interior of the spindle.

4. In an apparatus for serving a cord or the like around an elongate core, a tubular spindle, a bearing for journaling the forward end of the spindle to rotate about its longitudinal axis, means for rotating the spindle, means for guiding a strand leading from a source of supply to feed it into the interior of the spindle at its rearward end, a radially-disposed opening from the interior of the spindle to its exterior for directing the strand outwardly therefrom to feed along the periphery of the spindle longitudinally of its axis, an opening in the bearing at the forward end of the spindle for passing the strand therethrough as it feeds along the periphery of the spindle, and a guiding eye leading into the interior of the spindle at its forward end to cause the strand when attached to a core inserted into the end of the spindle to wind around the core to serve it helically thereof.

5. In an apparatus for serving a continuous length of cord around an elongate core, a stationary bearing, a tubular spindle journaled at its forward end in said bearing to rotate about its longitudinal axis, an electric motor for rotating said spindle, means to direct a strand leading from its source of supply into the interior of said spindle at its rearward end, an opening in the spindle for guiding the strand radially outward therefrom to extend along the periphery of the spindle, an opening in the bearing at the forward end of the spindle to pass the yarn therethrough, and an eye at the forward end of the spindle for guiding the strand into the interior of the spindle to adapt it to be wound around a core inserted into the spindle to serve the strand thereon in helical coils.

6. In an apparatus for serving a continuous strand such as a cord or the like around a wire or other core, a hollow spindle of transparent material, a bearing for mounting said spindle to rotate about its longitudinal axis, means for guiding the cord to direct it into the rearward end of the spindle and then radially outward therefrom to feed along the periphery of the spindle, a sleeve fast -.on the spindle to rotate therewith within the -the spindle for guiding the strand into its interior to cause it to wrap around the core in helical coils 'during the rotation of the spindle.

7. In an apparatus for serving a continuous strand to apply it helically to an elongate core, a

' standard, a tubular spindle journaled in forward and rearward spaced hearings on said standard,

- means for rotating said spindle, means for guiding the strand to direct it intothe interior of the spindle at its rearward end, means at said rearward end of the spindle for directing the strand radially outward from its interior to adapt it to feed along the periphery of the spindle in. the direction of its axis, means for passing the strand through the forward bearing for the spindle as it is revolved therewith, and means at the forward end of the spindle for guiding the strand radially into its interior to cause it to wind around a core Y inserted into the end of the spindle.

adapt it to feed along the periphery of the spindle,

a sleeve rotatable in the forward bearing for the spindle and provided with an opening through which the strand feeds, and an opening at the forward end of the spindle through which the strand leads to direct it radially into the interior thereof for winding-it about a core inserted into the end of the spindle.

9. In an apparatus of the type specified, a standard, an electric motor mounted on said standard, forward and rearward axially-alined '8 bearings on the standard; a tubular spindle journaled in said bearings, a sleeve fast on the spindle and rotatable in the forward bearing, a pulley on the spindle, a belt connecting the motor to drive the pulley to rotate the spindle, means for directing a strand such as a cord into the rearward end of the spindle and radially outward from its interior through an opening beyond the rearward bearing, an opening in the sleeve in the forward bearing through which the strand feeds along the periphery of the spindle, and an opening at the forward end of the spindle for guiding the strand into the interior of the spindle to cause it to wind around a core inserted into the end of the spindle to serve the strand in helical coils thereon.

10. In an apparatus of the type indicated, a hollow spindle, a bearing for journaling the spindle, a sleeve fast on the spindle to rotate therewith within its bearing, means for guiding a strand in an axial direction along the outer periphery of the spindle, an opening in said sleeve for passing the strand through the bearing for the spindle, and guiding means at the end of the spindle for passing the strand axially into its interior to coil it about an object inserted thereinto.

CURT J ROHLAND.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 771,780 Janssen Oct. 4, 1904 986,690 Clark Mar. 14, 1911 1,233,593 Macfarlane July 17, 1917 1,363,422 Lambert Dec. 28, 1920 1,420,911 Davis et a1 June 27, 1922 1,843,149 Eaton Feb. 2, 1932 2,416,076 Uhler Feb. 18, 1947 FOREIGN PATENTS Number Country Date 503,928 Germany July 31, 1930

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