US2222847A - Yarn control means - Google Patents

Description

Nov. 26, 1 940. F. .1. KENT 2,222,847

YARN CONTROL MEANS Filed June 6, 1939 2 Sheets-Sheet 1 n 191) 1 A 301, I I,

I] 19 1 19a 1 o 12 '7 11a 0 I 22 11 19a INVENTOR, IH-wuw'ck I ATTORNEY.

Nov. 26, 1940. F.IJ. KENT. 2.222,s47

YARN CONTROL- MEANS Filed June 6, ,1939 2 Sheets-Sheet 2 I INVENTOR. F141. 5 I

ATTORNEY.

Patented Nov. 26, 1940 YARN CONTROL MEANS Frederick J. Kent, Glen Rock, N. J., assignor to Sipp-Eastwood Corporation, Paterson, N. J., a corporation of New York Application June 6, 1939, Serial No. 277,588

8Claims.

able one of the two elements is-set up and this results in the tension constantly varying .and in the case of weak yarnis likely to disrupt it.

In order to eliminate such vibration it has been 15 proposed to damp such element, that to set up resistance thereto which, while yielding in character, will retard its movement either as caused on the one hand by the yarn or on the other by gravity or other expedient tending to go urge said element against the yarn; for instance, it has been proposed to connect to said element means whose movement is resisted in some way by fluid, as a piston movable in a cylinder.

The object of this invention is to provide an 215 improved tension device and especially of the,

class in which the movable element is subject to damping control, that is to say, so that greater uniformity of tension independently of the speed of the yarn and even in the case of very weak 30 yarns will prevail than is possible-with the use of any previous device of this type and so that the fabrication and assembling of the parts will I be simplified and cheapened and a generally more efiicient device result.

35 My invention further contemplates means, as-

sociated in a novelway with a tension device characterized more or less particularlyas hereinafter set forth, but regardless of the presence or absence of any damping means controlling 40 its movable tension element, for in some way signaling the operator when said movable element moves beyond that position past which it is normally held from moving by the thread when intact and taut.

45 Inthe drawings,

" Fig. 1 is a perspective view of the device as seen from the front;

Fig. 2 is a side elevation thereof; Fig. 3 is a front elevation; 5 Fig. 4 a section in the plane 4-4, Fig. 3;

Figs. 5 and 6 are plans of plates and 22; and Fig. 7 shows lever I9 in plan with its arm I9?) removed.

A body or frame proper here is. formed by a.

5 forked portion I having the arms of its fork side by side and projecting forwardly; a for.- wardly and downwardly inclined wall or web 2 joining but extending short of the free ends of said arms; an arm 3 extending rearwardly from the portion I and, by having its free end up- 5 turned and formed with an eye 4, forming a thread guide; and a post 5 upstanding from the junctureof portion I and arm 3. Portion I at its rear side is provided with a socket Ii to receive an upstanding tongue on a bracket A of a m creel frame where, as usual, the device will be associated with a creelsee Klein Patent No. 1,885,114, for instance; and arm 3 has a depending tongue 30. which may enter and fit a socket in the bracket to aid in maintaining the device 15 fixedly in position.

Forming with the frame-proper a part of the fixed structure of the device} thoughremovable from such frame-proper, is a bifurcated element I, herein the form of a wire, both legs thereof my being approximately in the same horizontal plane. For supporting it-the arms of the portion I have holes 8; this element,.with its'bend at one side of the frame-proper, has its legs received by the holes, and at the far side of the g5 frame-proper the end of one leg may'be upset to prevent unintentional removal of said element.

A somewhat elastic sheet-metal plate 9 surmounts the post 5, being held rigidly thereto by I a screw I0, and it projects forwardly and has v along its forward straight edge an underneath groove 91:. Such plate forms another part of th fixed structure. W

That tension member or grid which is fixed. J and also forms a part of the fixed structure may be thus described: A metal plate II along a line parallel with and near one long edge thereof has portions Ila pressed in one direction and inter-' mediate portions IIb pressed in theopposite direction out of the original plane of the plate, 40

thus providing th plate with what amounts to a tubular portion, here-in skeleton form, and the bore of such tubular portion receives the forward leg of element I. Projecting in a direction transversely of the axis of such bore the plate has space'd parallel fingers IIc and in the assembled state of the parts the free ends of these fingers are engaged in the groove 9a of plate 9, whereby element 1 and such plate 9 hold the member II in fixed position. The fingers are all curved more or less to the contour of a cylinder common to them and so that their concave sides are forward. I

That tension memberpr grid I2 which is movable is in all respects substantially a counterpart of the member II, to wit, having a tubular portion I2a formed substantially the same as the tubular portion IIaJ-llb of member II and a row of spaced curved projections l2b like the 5 fingers IIc, but the concave sides of said projections in this case are presented rearwardly. The bore of tubular portion I2a receives the rear leg of member 1, which therefore forms a bearing on which member I2 is pivoted. Member I2 is 10 confined against axial displacement by the arms of the forked portion I of the frame, and said projections are arranged so that when the member tilts forwardly they will pass freely between the fingers of member II. when the movable 16 member is at its forward limit (determined by contact of said projections with the other member between the fingers thereof) the ends of said projections are forward of member II, providing an entrance passage :0. Hereinafter I des- 20 ignate by the term fingers those portions of said projections I 21) which in Fig. 4 are shown forward of the fingers IIc.

Member I2 is normally urgedin the direction (backward) to enter its fingers between those 25 of member II, thus: A sheet metal plunger I4 having a straight upper portion is bent forwardly and then down, as at Ila, and has its free end portion Mb bent rearwardly. A coupling between said member and the plunger is formed thus:

80 An elastic metal strip I5 forming the couplingis rebent, both legs thereof having opposed bends I5a whose concave sides or notches are relatively outward, one leg projecting further than the other to form a tongue I517. With its legs strad- 85 dling the rear leg of element 1 this coupling is sprung into a hole I22: ,of the movable tension member I2 (the opposite edges of the member I 2 at such hole engaging in the mentioned notches so that the coupling is fast to said member) and 40 the tongue ISD is entered freely into a hole or slot Ilc of the plunger. elevated the member I2 is swung forwardly and when it is allowed to fall it swings said member rearwardly. Forming a depending extension of 45 the plunger is the stem Ilia of a piston I6.

The plungers movements are fluid-damped as follows: There is a cup II having a top external flange I'Ia and receivedin. a hole 2a in web 2 and also having a circumferential slot I'Ib below the 50 web whereby, as will appear, the cup becomes a part of the fixed structure. This cup or cylinder receives the piston I6 here with a somewhat loose fit since a. liquid,.as water, partially filling the cup is in this example to be the damping me- 55 dium for the inter-coupled plunger and member I2- To retain the: liquid and exclude foreign matter that 'might interfere with the motion of the piston there is 'a cover I8 of quite flexible material and truncated-conical in form whose lower margin is fitted over the flange IIa of the cup and whose neck-portion Ila embraces the stem of the piston, both joints (at the flangea'nd I stem) being of course hermetic. When the piston descends this cover undergoes pleating, bel-. 65 lows-fashion.

To thread the device, the thread a being already reeved through the eye I, the operator with, say. the right hand,-draws it forward past the left side-of the device and then, having lifted the 70 plunger with theother hand and hence shifted the movable tension member forwardly, passes the-thread to the right and across the upper ends of the fingers of projections I 2b whereupon it assumes a position between the two mem- 76 bers or grids thus: Since the outer faces at said When the plunger is diameter to avoid contact of the plate with the Having thus fully described my invention,

ends of the fingers now converge toward the portions or fingers He the tautened thread is cammed by the fingers toward and past their free ends so as to enter passage r. Then, engaging the concave inner faces of the fingers I I0,

which extend further than the fingers of the movable grid, it is cammed by them downwardly, so that when the intercoupled plunger and movable grid are now freed the thread remains held by and between the concave faces'df the 10 fingers of both grids.

For the signaling the construction is as follows: A lever I9 has its body portion and an arm Illa thereof fulcrumed on the rear leg of element I, to wit, at what I term the draft side of the members II-I2- or the side thereof from which the thread is discharged, the body portion being outward of the right leg of the frame proper 2 and the arm bent off to overlie said leg and then bent forward to obtain its fulcrum on said leg of member 'I. This device has an upstanding thread-engaged arm ISb and gravity tends to urge said lever anti-clockwise as viewed from the right, or so that this arm moves through the line in which the thread is confined by the grids to travel between them. When the device is threaded, as described, the lever is .tilted by the attendant reversely and the thread passed in front of it, thus when taut to maintain the lower bent-off end I90 of the lever out of circuit-closing position. An insulating plate 20 is secured to the bottom of the web 2 of the frame proper by screws 2 I, and incidentally this plate is notch ed at 203: and receives in its notch the cup II, the edge of the plate at the notch being engaged in the slot Nb of the cup, whereby the latter, with its flange IIa resting on the web; is held from upward displacement. Under the insulating plate is a metal terminal plate 22 having a forked terminal to which a wire X of the signaling circuit is to be connected. This plate 22 is held fast by one of the screws 2I and also by having a forward band-portion 22a whose ends are bent upward, being received by notches 20a in plate 20, and then back over the latter. One of such ends forms a contact to coact with the. end I90 of the lever I9 to close the circuit when the lever is freed for that purpose. Screw 2| extends through a hole 22b inplate 22 of ample screw.

Occasionally some thread adjacent to but not under control by the particular tension device may become looped around the latter and thus or otherwise cause the circuit-closing lever I! to close the circuit. To prevent this, 23 is a forwardly projectingcurved guard, here a wire attached to the fixed structure as follows: The upper end of the wire has a hook which engages the forward leg of member I and is-received in a slot IId of the grid II and has its lower 'end engaged in a socket 20b of the insulating plate 2llnot of course contactingwith the terminal plate 22. r

what I claim is:

1. Thread tension means'including fixed structure having a row of spaced thread-engaging gers into but movable reversely to retract them from said spaces and said structure limiting the reverse movement of said member to a position in which the fingers are retracted from said spaces and stand with their free ends in spaced relation to and projecting toward the first row, said fingers providing adjacent their free ends surfaces, remote from the first row when said member is in said position, which with said member in said portions.

2; In combination, fixed structure, a member having a row of spaced thread-engaging portions, said structure providing an axial support for said member extending substantially Pa allel with said row, an element affixed to said structure and overhanging said member in substantially parallel relation to said axial support, said member and element having an interlock confining the former against displacement around said support as an axis, and a back-and-forthmovable member opposite the first member and pivoted in said structure on an axis substantially parallel with said support and having a row of spaced thread-engaging portions and normally urged in one direction around its pivoting axis.

3. In combination, fixed structure having a portion in contact with which the thread to be tensioned travels in a generally horizontal line, a member opposed to said portion and in contact with which the thread, between them, trav- 40 able member of a yarn tension means including fixed structure, a piston, a fluid-containing cylinder arranged in said structure and having, an

open mouth receiving the piston, and a flexible cover of sheet material on the cylinder covering 45 its mouth andpenetrated by the piston and forming a hermetic seal therewith and with the cylinder.

position converge toward said 5. In combination, with opposed tension members providing parallel rows of fingers arranged to intermesh and one of which members is movable and normally urged in the direction through the other and back, whereby when moved in the first direction to exert pressure on the thread to be tensioned and traveling between said members, supporting structure for said members, and a thread-engaged circuit-closing device pivoted in said structure on an axis parallel with said rows and movable from and toward circuitclosing position and normally urged toward said position and having a substantially straight thread-engaging surface extending transversely of its pivoting axis.

6. In combination, a frame, a fixed rebent elongated element having its legs substantially parallel and penetrating a portion of said frame, and a pair of opposed coactive tension members respectively supported by said legs, one member being pivoted and having the corresponding leg forming its pivoting axis and being normally urged in one rotative direction.

7. In combination, a frame, a fixed elongated element having its legs substantially parallel and penetrating a portion of said frame, a pair of opposed coactive tension members respectively supportedby said legs, one member being pivoted and having the corresponding leg forming its pivoting axis and being normally urged in one rotative direction and a thread-. engaged circuit-closing device pivoted on one of said legs and normally urged in one rotative direction.

8. In combination, fixed structure, .means therein to exert tension on the thread, means to damp the movementsof the first means in-' .cluding a closed cylinder supported by said structure, the first means having a piston in the cylinder, a circuit-closing device normally urged against the thread, a contact arranged to be engaged by said device on failure of the thread, and an element fixed to, and insulating the contact from, said structure and confining the cylinder to said structure.

FREDERICK J.

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