US1597199A - Braiding carrier - Google Patents

Description

Patented Aug. 24, 1926.

HENRY JANSSEN, orwvoiuissrne, rnnNsYLvAnIn, As'sIGnoR To TEXTILE MACHINE worms, or WYoMrssINe, EENNSYLVANIA, n CORPORATION OFPENNSYLVANIA.

BnAInIive CARRIER.

Application filed October 24,1925. Serial No; 64,553.

My invention relates to bob-bin carriersfor braiding machines, and is particularly adapted for such machines employing stiff threads or strands of wire requiring a heavy tension during braiding; being to provide a simplified practical construction permitting ready replacement of used bobbin spools, better equalized and determinedly adjusted thread-feeding tension-' ing, and improved and positive means effective upon the breaking of a thread to. operate the machine stop motion mechanism. With these objects in view, and others that will appear later, my invention consists of the improved construction more fully hereinafter described in connection withthe accompanying drawings; the novel features being partlcularly pointed out inthe subjoined claims.

Fig. l is a side elevation of a bobbin carrier embodying my invention in a preferred form, a portion of the vertical standard being intermediately broken away to more clearly show parts normally hidden thereby, and a; raised position of the thread-tensioning arm and the tensioned thread being indicated in dotted lines.

"Fig. 2 is a view substantially at right angles to Fig. 1, but showinga portion in vertical sections on the line 22 of Fig. 1.

Fig. 3 is a fragmentary view showing in side elevation the tension spring adjusting wrench in operative position.

Fig. Isis a similar fragmentary view showing an opposite side elevation to that of Fig. 1, and indicating the improved means employed to retain the bobbin on its carrier stud.

It will be understood that the bobbin car rier shown in the drawings is employed in usual manner in connection with a braiding machine having a race-way through which the carriers are traversed in forming a braid, such machine being more fully shown and described in the patent to Rahm, No. 852,722 of May7, 1907, which also describes and shows a stop motion mechanism operated by a carrier upon the breaking of its thread. Such machines being well known, no special showing thereof is required other than dotted lines 1, Wliicl1 indicate the usual top plate, in the raceway of which the hart 5 of the carrier foot 6 engages; and dotted lines 2 indicating a plate-supported lever of my main objects I ported standard 7, having a central overhanging thread guide-eye 8, an adjacent fixedly mounted feed roll 9, and a midway laterally projecting stud oraxle 10, upon the free unobstructed end of which the bob bin or spool 11 may be readily sidewise mountedor removed. The foot portion also preferably carries short alined bearingposts 12, 12, 12, 12 in which are mounted as shown oppositely extending horizontally movable rods 13, 13, normally held in retracted position by springs 14, 14 with their inner rounded ends 15, 15 spaced apart from one another; saidrods lying in the plane of the plate-mounted stop-motion actuating arms 2, and adapted to operatively swing the latter when projected by entry between their spaced ends 15, 15,01": a wedge extension 21 on a swinging feed-tensioning arm 20, as hereinafter more fully described.

The bobbin or spool, which carries wound thereon the supply of thread or Wire, is preferably formed as shown with disc ends, and

a brake 25 is adapted to engage the edge of one of said discs to frictionally control its otherwise free rotation on stud 10. Said brake 25 is intermediately carried by a lever 26,pivoted at 27 to the standard 7, and havng a long free end tensioned by a spring 28 and projecting into the path of swing of feed tensioning arm 20, which lattermay engage said lever end, as hereinafter described, to releasingly move said brake 25.

The projecting end of stud 10 is preferably hollowed out or recessed, as shown, to

form a chamber 80, closed at its free end by a nut 31 forming a short stud extension the latter providing a bearing for one end of a shaft 32 axially mounted in said stud with its opposite end projecting through standard 7 and adapted to carry coaxially swingable therewith aforesaid feed-tension arm 20. Wound upon said shaft, within chamber 30, is a spring 33 one end of which is secured to nut 31 and the other end to a shaft collar 34, regulated tensioning of said spring being effected by a removable wrench 35, engaging a stem end 36 of said shaft 32 to rotate thelatter preliminary to securing thereto arm by tightening bolt 37 of the split collar of the latter. The wrench 35, as shown, has a. one-position engagement on stem'end '36 and is provided with a scaled dial 38, while arm 20 carries a. mark 39 ad jacent said dial so that equalized tensioning of the springs 33 of the series of carriers usually employed in a machine, may be read ily effected by requally turning each shaft until the same dial mark registers with its respective arm mark.

The arm 20 is inwardly bent and preferably carries, as shown, an anti-friction roller 40 adjacent its wedge end 21, said roller swinging in a vertical plane substantially in alinement with said thread guide eye 8, and in an arc co-axial with said bobbin carrying stud, its maximum swing being, as shown, about a half circle, the final lowering movement causing wedge extension 21 lever 26 as the feeding movement requires,. and reversely swinging to spread said rods.

13, 13 should the thread break. The small radial swing of the operating arm, less.

than 90 as shown, causes but slight change in the spring tension of said arm in this rangeand insure a more equal and constant tension on the thread at the braiding point through-out the operation of the machine;

while the equalized tensioning of the several carriers insure better and improved braid formation. Y

To retain. the bobbin 11 on its stud 10 and permit free one-handed renewal or replacement of same I preferably employ, as shown, a disc 41 eccentric'ally pivoted to the 7 end face of stud nut 31 and normally projecting beyond the stud periphery, but mov-.

able within the latter by a partial rotation ofsaid disc in a direction opposite to the bobbin feeding rotation.

It will be seen from the foregoing description that by means of the equalized tensioning of the feed arms of the several bobbins employed, a determined and regu- :lated equal tension may be exerted on each bobbin-carried strand, which will vary but slightly during operation so as to insure more uniformly laid braid.

The bobbins may be more readily and quickly removed and replaced when required and with little exertion, and the improved stop-motion operating rods, lying always in the plane of the plate-carried arms are at once effective even should the break of thread occur at the moment a'c ar'ri er is passing such arm; while the carrier is simple, strong and positive in action and provides for heavy and equalized thread tensioning at all times. The showing of the drawings may of course be varied within the scope of the invention as defined in the claims.

1. A braiding carrier comprising a vertical standard having a recessed bobbin-carrier stud projecting laterally therefrom, a spring-tensioned shaft mounted insaid stud and carryinga co-axially 'swingable feedtensioning 'arm, and a bobbin-tensioning brake shoe. I I I 2. A b aiding carrier comprising a vertical standard having arecessed bobbin-carrier stud projecting laterally therefrom, a spring-tensioned shaft mounted in said stud, a feed tensioning arm secured to a projecting end of said shaft and swingable co-axially therewith, a bobbin engaging brake, and a brake tensioning lever rele asingly, engageable by said feed-tensioningarm. I

3. Abraiding carrier comprisinga vertical standard having a recessed bobbin-carrier stud projecting laterally therefrom, a shaft mounted in said stud, a spri'ngon said shaft within said recess adapted to tension rotary shaft movements, a. feed tensioning arm secured to a projecting end of said shaft and swingable coaxially therewith, a bobbin tensioning brake, and a brake tensioning lever releasingly engageable by said feed tensioning arm.

4. In a braiding machine comprising a stop motion mechanism having acarrieroperated arm, abraiding carrier having a p-ro ectible arm-actuating mem'b eii, and a feed-tensloning arm adapted upon the breaking of its thread to operatively project said member. J

5. In a braiding machine comprising a stop motion mechanism having a carrieroperated arm, a braiding carrier having a pair of oppositely projectible arm-actuating members normally held in retracted nonoperating position, and a feed-tensioning arm adapted upon the breaking of its thread to operatively project said members.

6. In a braiding machine-comprising a stop motion mechanismhaving a carrieroperated' arm, a braiding carrier having a pair of oppositely movable members mounted in the plane of said carrier operating arm, springs normally holding said members in retracted non-operating position with their adjacent ends spaced apart, and a feed tensioning arm having a wedge-shaped extension adapted upon the breaking of its tension thread to enter between said adj acent spaced ends and oppositely project said members into operative position.

7. In a braiding machine comprising a stop motion mechanism having a carrieroperated arm, a braiding carrier having a projectible arm-actuating member, a frictionally-tensioned bobbin, and a feed-tensioning arm swingable co-axially about said bobbin; said arm being adapted during swinging movement in one direction to re lease said bobbin tension, and in a reverse direction to operatively project said armactuating member.

8. In a braiding machine comprising a stop motion mechanism having a carrieroperated arm, a braiding carrier having a pair of oppositely movable horizontal rods mounted in the plane of said carrier-operating arm, springs normally holding said rods in retracted non-operating position with their adjacent ends in spaced relation, 3. frictionally-tensioned bobbin, and a feedtensioning arm swingable coaxially about said bobbin and having a wedge-end extension; said arm being adapted during swinging movement in one direction to release said bobbin tension, and in a reverse direction to enter its Wedge extension between said spaced rod ends to operatively project the same in opposite directions. a

9. A braiding carrier comprising a vertical standard and a laterally projectiblo bobbin carrying stud, a spring-tensioned shaft mounted in said stud and adjustably carrying a feed-tensioning arm swingable co-axially about the same, a one-positioned shaft engageable tensioning wrench having a scaled dial, and an arm carried marker for determinedly adjusting said shaft spring tension.

10. A braiding carrier comprising a vertical standard and a laterally projectible bobbin carrying stud, and a determinedly adjusted spring-tensioned shaft mounted in said stud and carrying a feed-tensioning arm swingable co-axially about the same; said arm normally traversing in a limited arc whereby a nearly constant feeding tension is maintained thereby.

11. In a braiding carrier, a base, a standard rising therefrom, a laterally projecting arm adapted to receive a spool of wire, a sheave and a guide adjacent the spool, a lever arm adapted to swing about an axis substantially coincident with the axis of the spool, a sheave carried thereby, means for braking said spool, and means operable by said lever to release said brakin In testimony whereof I aflix my signature.

HENRY J ANSSEN.

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