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Publication numberUS2346917 A
Publication typeGrant
Publication dateApr 18, 1944
Filing dateDec 8, 1942
Priority dateDec 8, 1942
Publication numberUS 2346917 A, US 2346917A, US-A-2346917, US2346917 A, US2346917A
InventorsHeger Wilhelm A
Original AssigneeWestern Electric Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Take-off and tensioning device for strand supplies
US 2346917 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

April 18, 1944.

w. A. HEGER I 2,346,917

TAKE-OFF AND TENSIONING DEVICE FOR STRAND SUPPLIES Filed Dec. 8,.1942 2 Sheets-Sheet 1 W" MW Mm! J in WAH GER BY ATTbRA/Z April 18, 1944. HEGER 2,346,917

TAKE-OFF AND TENSIONING DEVICE FQR STRAND SUPPLIES Filed Dec. '8, 1942 2 Sheets-Sheet 2 mam/Ton W A. H 65/? Patented Apr. 18, 1944 TAKE-OFF AND TENSIONIN G DEVICE FOR STRAND SUPPLIES Wilhelm A. Heger, Lansdowne, Md., assignor to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application December 8, 1942, Serial No. 468,240

8Claims.

This invention relates to strand tensioning apparatus, and its object is to provid a new and improved device for tensioning strands withdrawn from a strand supply.

In machines for rolling fine wire into tinsel, the wire fed to the wire flattening rolls from a supply spool must be drawn under tension as nearly uniform as possible and without sudden changes in tension. Occasionally the supply spools used on these machines have the wire unevenly distributed along the length of the spools. Under such conditions, if the wire withdrawn slackens, it creates a tendency for the windings adjacent the one being withdrawn to slide from their normal position to positions in which they overlap the wire being Withdrawn. When the wire being withdrawn tightens, the loosened windings will tighten in their new positions over the wire being withdrawn and cause irregularity in the rate of feed of the wire. Fluctuation in the rate of feed of the wire may also be caused from differences of tension on the wire between the adjacent windings when it is originally wound on the supply spools. Either or both of the above mentioned conditions of the supply spools often cause the wire to break. As a result, time of the machine operators is wasted and the wire on the unevenly wound spools cannot be used with the machine and must be scrapped.

In accordance with one embodiment of the invention, a strand which is to be rolled into tinsel is fed from a strand supply to a tinsel rolling machine over an automatic strand tensioning device. comprising a slidable sheave over which the strand passes, an elongated roller around which the strand passes, a strand actuated tension control arm, and strand engaging friction members.

A complete understanding of the invention may be had from the following description of a specific embodiment'thereonin conjunction with the accompanying drawings, in'which: V

Fig. 1 is a front elevation of an apparatus embodying the invention in association with a tinsel rolling machine with which it may be used;

Fig. 2 is a side view of the apparatus shown in Fig. 1;

Fig. 3 is an enlarged plan view of the apparatus embodying th invention, and

Fig. 4 is a side elevation of the apparatus shown in Fig. 3.

As shown in Figs. l and 2 of the drawings, a housing 12 contains a drive and a brake for an arbor l5 supporting a supply spool l I. A

ill

talreup device l5 with a bobbin IT on which the wire i8 is wound draws the wire under a uniform tension from wire flattening rolls I 4-46;

A sheave 25 is slidably and rotatably mounted on a rod 26 attached to a tension arm 28 which is biased in an upward direction by a spring. Movement of the tension arm 28 controls the operation of the brake on the arbor 16, thus controlling the tension of the wire l8 by the drag of the supply spool H. All of the apparatus described above are of well known designs.

Referring to Figs. 3 and 4 of the drawings, a sheave I9 is rotatably and slidably mounted on a rod 20 attached to a bracket 2| secured to the housing It. Adjacent to the sheave I9 is mounted an elongated roller 22 on a rod 2!! attached to the bracket 2i. Discs 29-29 are loosely mounted on the end of a rod 32 also attached to the bracket 2!. The outermost of the discs 29-49 is pressed against the inner disc by a spring 3i, the compression of which may be adjusted by a nut 30 threaded on the rod v32.

In the operation of the improved tension device, the wire I8 is drawn from the supply spool it, passes around the sheave l9, under the roller 22 and then upwardly and around the sheave 25. From the sheave 25 the wire l8 passes between the discs 29-29 to the wire flattening rolls i l-I l and then is wound by the takeup device l5 upon the bobbin I'l.

Since the wire I8 is wound on the supply spool H in layers, the point at which it leaves the spool moves along the length of the spool and in so doing causes the sheave l9 to slide along the rod 20, thus allowing the wire to be withdrawn in a direction approximately perpendicular to the axis of rotation of the spool. This tends to prevent lateral sliding of the turns of wire on the supply spool ll and any tangling which might break the wire. As the sheave l9 moves back and .forth, the wire slides along the roller 22 and causes the sheave 25 to slide along the rod 2%.

Friction resulting from the large surfac contact between the roller 22 and the rod 24 tends,

to retard the rotation of roller 22 as the wire !8 passes thereover, thus exerting a drag on the wire being withdrawn from the supply spool. Because of the adjacent positions of the sheave l8 and the roller 22, the wire follows a tortuous course from the supply reel II to the sheave 25, thereby increasing the tension on the wire. This increase over the normal tension on the wire l8 tends to dampen the movement of the tension arm 28, and thereby prevents sudden applications and releases of the brake on the arbor Hi. This eliminates sudden changes in tension caused by long and rapid movements or the tension arm 28, which might cause breakage of the wire.

The discs 29-29 retard passage of the wire therebetween and thus tend to create a uniform tension on the wire l8 and to prevent any sudden fluctuations which may occur in the tension of the wire between the supply spool H and the discs 2929 from being transmitted beyond the discs.

From the foregoing description, it will be apparent that the apparatus embodying this invention will prevent sudden tension variations in strands being withdrawn from a strand supply, which might result in breakage and a non-uniform product. When applied to a tinsel rolling machine, this invention permits a saving in time and material and an improvement in the quality of the rolled tinsel.

It will be understood that the embodiment of the invention disclosed herein is merely illustrative and that changes and modifications may be made therein without departing from the spirit and scope of the invention.

What is claimed is:

l. A strand tensioning device for a strand supplying apparatus having a strand supply and an automatic strand tension controlling means actuated by a tension arm to regulate the rate of withdrawal of a strand from the strand supply, which device comprises a slidable sheave around which the strand is drawn directly from the strand supply, and an elongated roller contacting the strand and coacting with the slidable sheave to cause the strand to advance under a uniform tension.

2. A strand tensioning device for a strand supplying apparatus having a strand supply and an automatic strand tension controlling means actuated by a tension arm to regulate the rate of withdrawal of a strand from the strand supply, which device comprises a sheave to guide the strand from the supply," a roller positioned adjacent to and in an offset relation to the sheave and which the strand contacts as it passes from the sheave, thereby causing the strand to follow a tortuous course and to be withdrawn under a uniform tension from the strand supply, and a pair of spring-pressed elements exerting a braking pressure on a strand passing therebetween.

3. A strand tensioning device for a strand supplying apparatus having a strand supply and an automatic strand tension controlling means actuated by a tension arm to regulate the rate of withdrawal of a strand from the strand supply, which device comprises a slidable sheave to guide a strand withdrawn from the supply substantially perpendicularly to the, axis of rotation of the strand supply, an elongated roller around which the strand passes for causing the strand to advance under a uniform tension to the tension arm, and a plurality of spring-pressed discs between which the strand advances for imparting tension to the strand.

4. A strand tensioningdevice for a strand supplying apparatus having a strand supply and an automatic strand tension controlling means actuated by a tension arm to regulate the rate of withdrawal of a strand from the strand supply, which device comprises a slidable sheavearound automatic strand tension controlling means actuated by a tension arm to regulate the rate of withdrawal of a strand from the strand supply,

which device comprises a slidable sheave to guide the strand substantially perpendicularly to the axis of rotation of the strand supply as the strand is withdrawn from the supply, an elongated roller adjacent to the sheave in contact with the strand which causes the strand to be under a uniform tension as it is advanced from the roller to the tension arm, and a pair of spring-pressed discs for imparting a tension to a strand between.

6. A strand tensioning device for a strand supplying apparatus having a strand supply and an automatic strand tension-controlling means actuated by a tension arm to regulate the rate of withdrawal of a strand from the strand supply, which device comprises a slidable sheave adjacent to the strand supply to guide the strand withdrawn from the supply in a direction substantially perpendicular to the axis of rotation of the strand supply, and an elongated roller positioned near the sheave around which the strand passes from the sheave and along which the strand may slide as the sliding sheave guides the strand laterally to the direction itis fed, the sheave and the roller coacting to cause the strand to be advanced under a uniform tension to the tension arm.

7. A strand tensioning device for a strand supplying apparatus having a strand supply and an automatic strand tension controlling means actuated by a tension arm to regulate the'rate of withdrawal of a strand from the strand supply, which device comprises a slidable sheave adjacent to the strand supply to guide the strand passing therewithdrawn from the supply in a direction substantially perpendicular to the axis of rotation' of the strand supply, an elongated roller positioned near the sheave around which the strand passes from the sheave to the tension arm and along which the strand may slide as the slidingv sheave guidesthe strand laterally to the direction it is fed, and spring-pressed discs between which the strand is advanced to further add o the uniformity of the tension on the wire ads automatic strand tension controlling means actuated by a tension arm to regulate the rate of withdrawal of a strand from. the strand supply,

which comprises a slidable sheavepositioned near the strand supply and over which the strand passes, and an elongated roller member positioned adjacent to and in an offset relation to the sheave and around which the strand passes,.

thus forming a tortuous course for the strand advancing to the tension parting tension to the strand.

arm and thereby im-.

WILHELM A. HEGERLV

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3145947 *Aug 13, 1962Aug 25, 1964Techniservice CorpUnwinding strand from a traversewound package or the like
US3889928 *Dec 10, 1973Jun 17, 1975France EtatWinch with constant tension cable
US4899945 *May 2, 1988Feb 13, 1990Jones Johnnie LAutomatic wire dispenser
US5007597 *Jan 31, 1989Apr 16, 1991Jones Johnnie LAutomatic dispenser for elongated flexible coiled elements
US20120318901 *Nov 19, 2010Dec 20, 2012Metso Paper, Inc.Device and a method for un-reeling of wire from a coil
EP0077944A2 *Oct 7, 1982May 4, 1983Trimak Equipment Ltd.Apparatus for paying off wire from a bobbin
Classifications
U.S. Classification242/419.5, 242/419.6
International ClassificationB65H57/00, B65H59/14, B65H59/10, B65H57/18
Cooperative ClassificationB65H57/18, B65H59/14
European ClassificationB65H59/14, B65H57/18