US1176776A - Machine for unraveling and winding yarn. - Google Patents

Description

M. A. MUELLER.

MACHINE FOR UNRAVELING AND WINDING YARN.

APPLICATION FILED APR. 13, .912.

Patented Mar. 28, 1916.

3 SHEETSSHEET I.

WITNESSES:

NLA. MUELLER.

MACHINE FOR UNRAVELING AND WINDING YARN.

APPLICAHON FILED APR. 13, I912.

1,176,776. A Patent-ed Mar. 2%, 19m.

3 SHEETS-SHEET 2 WITNESSES:

04% z/iza M. A. MUELLER.

MAC HNE FOR UNRAVELING AND WINDING YARN.

AFPLICAIION FILED APR. 13. 19\2.

1. 17@,776, Patented Mar. 2b, 1916.

3 SHEEIS SHEET 3. ,Z zgfi.

W A! A TTOR/VEY5 a citizen of the United States MAX ARTHUR MUELLER, OF BROOIiLYN, NEW YORK.

Specification of Letters Patent.

macnmn non. nnnsvnnme am; WINDING YARN.

Patented Mar. 2 8, 1916.

Application filed April 13, 1912. Serial No. 690,462.-

To all whom it may concern:

Be it known that I, Max ARTHUR MUEILER, of America, and residing in the borough of Brooklyn, in

the 'county of Kings and State of New York, have invented certain new and useful Improvements in Machines for Unraveling and Winding .Yarn, of which the following isa specification.

- My Invention relates to improvements in :machines for unraveling and winding'yarn and particularly to a machine adapted to unravel and spool the yarn from knit fabrics, the object of my invention being to provide apparatus for unraveling either flat or circular knit goods and simultaneously spooling the same so that the yarn is not only recovered but is recovered in spools or bobbins adapted to be placed at once in knitting machines for reuse.

In the accompanying drawings, Figure 1 is a side elevation of a machine embodying my invention in one form; Fig. 2 is a broken end elevation of themachine; Fig. 3 is a section on the line 22, Fig. 1; Fig. 4: is a section on the line 33, Fig. 1; Fig. 5 is an elevation and Fig. 6 a section on the line 6.6,"Fig. 5 of a detail of the drive mechanism; Fig. 7 is a perspective of a detail; Fig. 8 is a perspective of a base plate for the bobbin; and Fi 9 isa perspective of the bobbin with base p ate attached.

The present machine is designed for the recovery of yarn from fabric which b reason of some defect therein, cannot be utilized for the purpose for which it was made and consequently, unless the yarn is recovered, must be discarded as waste. Waste ofthis character is often quite valuable, as for instance, in knit woolen sweaters-and manufacturers commonly resort to. unraveling and spool'ing by hand in this class of goods 1n order that the yarn may be reused. This has been the universal practice so far as I am aware in connection with flat goods and the better classes of woolens, in which recovery of the yarn is consequently thernost important, are now commonly knit flat. Heretofore it has been practicallyimpossible to recover the yarn in double lock knit goods even byuse of hand machines. In the present machine the yarn from such goods,

whether knit in flat or circular form, is recovered directly on bobbins or reels. If more than a single strand of yarn is used in each knitted course, the various strands may be, and preferably are, separately recovered. The winding mechanism comprises a lurality of rotary drawing elements ere shown as bobbin carriers 10, on the lower end of the spindle 11 of each of which is mounted a friction disk 12. A cooperating driving disk 13 radially adjustable on its spindle 14 across the face of the friction 'disk 12 is provided with a band pulley 15 and .a boss 16 in which engages a fork from the shifting. lever 17, of which the radial ing disk 13 to secure the desired speed of the bobbin carrier is regulated. The handle end of the lever 17 rests upon a cross bar 18 notched at 19 to-receive the lever and hold the latter in adjusted position. The driving band 20 passes frompulley 15 to pulley 21 which is loose on the main driving shaft 22,- but normally held in frictional contact with the juxtaposed clutch disk 23 fast on said shaft, by the light controller rod 24, pivoted at 24?. The latter "acts upon this pulley 21 through an overbalanced lever 25 pivoted at 26 and engaging the'boss 27 on the pulley with a fork 28 at one end, while the other and free end 30 overlies and is supported by the rod 24. When this supporting end of the rod 24, which is pivoted at 24 is lowered in a manner about to be described, the overweighted end 30 of the lever 25 tends to follow it, with the result that the pulley 21 is shifted on the shaft 22 out of its frictional engagement with the clutch disk 23' and the drive of the bobbin thus halted. The pulley 21 is preferably provided with an annulus of friction material 31 on the face adjacent the face of the clutch disk 23 in -order to insure a prompt and eflicient drive therefrom.

. The yarn from the defective piece of goods 32, which is hung at 29 in stationary position during the operation of the machine, is passed directly from the goods toa drag device 33, thence over a stationary guide 34 to an eye in the upper end of a light stop rod 35 jointed at its lower end to the end of the controller rod 24, and

pivoted at 18, by means i adjustment of the dri'v bar.

finally to the guide finger 36 of the builder bar 37 which takes its motion from cams 38 on the auxiliary shaft 39 geared at 40 to the main driving shaft 22. The builder motion is imparted to the builder bar 37 through the rods a on which the bar is supported .from the ends of the rods 72 pivoted at b and carrying at their opposite ends rollers 12 upon whlch rest the endsofrods c pivoted at 0' and bearing through rollers a on the peripheries of the cams 38, against which they are held by the weight of the building The drag device in the form shown comprises a series of vertical rods 41 on which slide weighted curls 42 engaged by the yarn. When the piece of goods 32 is knit with several yarns the latter are preferably at once separated as they leave the goods and passed to independent drag curls 42 so that each of the latter acts upon a separate strand of yarn. Each strand is then separately passed over the guide 34, threaded through the eye of its own stop rod 35 and wound on a separate bobbin 43, the speed of which is independently controlled as above explained.

The weight of the drag curl may be varied with the strength of the yarn in the piece. 32,; but in any event it issuch that should the yarn be caught in the piece (as for instance when turning the corner at one side of a piece of flat goods) the drag will rise on the rod 41 before the tension on the yarn becomes suflicient to raise the stog rod 35 and halt the drive. The continue I pull upon the yarn-during this rise of the drag, accompanied by a certain amount of resulting vibration of the thin rod, is sulficient in most instances to free the yarn at the turn, so that the winding proceeds without interruption. Should the tension become suflicient to lift the long end of the stop rod 35, the drive of the bobbin is halted by the drop of the overbalanced lever and resultant declutching of the friction pulley 21 from the clutch disk 23 before the yarn is broken. Brief attention by an attendant frees the yarn and the wind proceeds automatically by the return of the clutch to position upon the release of the tension which has lifted the stop rod 35. Frequently personal attention is not needed, since the other strands which may have been at another portion of the course, overtake the position of the halted strand during the winding of the slack afforded by the drag curl and the'difiiculty is automatically solved by the com bined action of the various strands. When unraveling circular knit goods very little or no interruption in the operation of the apparatus is experienced. Should the tension wupon the strandaccidentally become sufiicient to break the'yarn, the bobbin of the.

particular broken strand spins harmlessly on until the machine as a whole is halted by the shifting of the main driving belt 44 by the lever 45. The broken yarn may be then repaired and winding proceeded with.

The apparatus shown is merely an illustrative embodiment of my invention. While primarily intended for unraveling knit goods, it may be readily used for winding bobbins from skeins in which case a stand 46 carrying the usual skein rollers 4748 may be placed. in feed position. When winding from skeins the yarn will ordinarily be so free that it may be passed directly to the guide 34' instead of through thevdrag device, but the latter may be used if desired. A metal base plate 49 with radial pin engaging slot 50 and centering .hole 51 may be fastened on the Worn out carrier, means for driving the same, and

-means operatively engaged by the yarn between the drag devices and the bobbin for interrupting the drive upon excessive tension on the yarn. s

2. In an unraveling machine, a fabricsupport, a plurality of gravity drag devices for freeing the yarn therefrom, a bobbin carrier, means for driving the same, a clutch device in the driving mechanism, a long armed lever for opening the clutch and an operative connection between said lever and the yarn for moving the lever to open the clutch upon excessive tension on the yarn.

3. In an unraveling machine, a fabric support, a plurality of gravity drag devices for freeing the yarn therefrom, vertical rods on which said drag devices freely slide to take up varying feed from the fabric while main taining the yarn tension substantially constant, a bobbin carrier, means for driving the same, and means operatively engaged by the yarn between the drag devices and the bobbin for interrupting the drive upon excessive tension on the yarn.

4. In a machine of the type described, an

unraveling device comprising an upright= v1bratory rod and a drag sliding thereon V over which the yarn passes from the drag device, builder bar eyes to which the yarn passes from the guide, a plurality of vertical spindles carrying winding bobbins fed from the eyes of the builder bar, friction clutches for driving said spindles, horizontal long arm levers controlling said clutches and means for suspending the long arms of said levers from the yarn at a point between the builder bar and said stationary guide Wherei by said levers may be actuated by the am to automatically halt the drive of the b0 bin on abnormal tension on the yarn.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses.

MAX ARTHUR MUELLER.

Witnesses:

CARL SCHMELZ, ALFRED BOEPPLE.

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