US905920A - Draw-detecting mechanism for looms. - Google Patents

Description

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WILLIAM P. PHILLIPS AND SAYERS D. EUBANKS, OF WEST DURHAM, NORTH CAROLINA.

DRAW-DETECTING MECHANISM FOR LOOMS.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed. March 23,1908. Serial No. 422,834.

' a draw occur in any of the threads.

When there is a cross or hitch in the warp or tangles should occur, then there is tend ency to tighten the threads in such a manner as to make a bad looking place in the cloth unless the loom be stopped before this can occur and the trouble be remedied.

The present invention comprises a means used in connection with the lease rods of the loom so that a structure will be caused to move into the path of the oscillating bar of awarp stop motion loom and the loom be thereby stopped whenever either lease rod is actuated by a cross or tangle or hitch in the warp threads. The lease rods are normally held by a yielding force in a position to maintain a strap or bar having in it a joint capable of being flexed, in a position to hold an interfering structure out of the path of the oscillating bar. Should, however, either lease rod be engaged by a crossed or tangled warp, then the force holding this bar against movement will be overcome and the connection from this bar will be flexed, thus moving the interfering structure into the path of the oscillating bar and thus cause the loom to knock off.

The invention will be best understood by a consideration of the following detail description taken-in connection with the accompanying drawings, forming a part of this specification, in which drawings Figure 1 is an elevation, partly in section, of so much of a loom as is necessary to be illustrated, showing the invention applied thereto. Fig. 2 is a perspective view of the part of the structure constituting the invention, together with some of the coacting parts.

Referring to the drawings, there is shown a portion of a loom frame 1, together with the whip roll 2, back lease rod 3, and front lease rod/i.

Attached to each end of the lease rod 3,

though but one end of the latter is shown in the drawings, is a strap 6 having one end bent into an eye 7 sprung around the lease rod so as to move radially about the axis of the lease rod. The other end of the strap 6 is bent at right angles to the first end, as shown at 8, and to this end 8 there is pivoted a link 9, the other end of which is pivotally connected to an open eye 10 on a rod 11 fast to a fixed portion 12 of the frame of the loom. The lease rod is under the control of the weight 13 secured by a cord 14 to the corresponding end of said lease rod, it being understood that while these parts are shown as connected to one end only of the lease rod, there will be duplicate structures like that described at each end of the structure. The warp threads are indicated at 15.

The link 9 is passed through or may be otherwise connected to a sliding bar 16, in the path of the lower end of which is a vibrating or oscillating bar 17 which is assumed to be connected to the throw-0E mechanism of the loom in the usual manner. The particular structure of the throw-0E mechanism need not be illustrated since the action of such structures is well known and any of the approved means may be used. The corresponding ends of thelease rods are connected by a coupling 18 so that the two lease rods move together.

Suppose, now, that any of the warp threads become crossed or entangled or otherwise bound together, then the entangled portion ultimately reaches the lease rod 3 and the latter is moved toward the right, as viewed in Fig. 1, against the action of the weight 13. Or if the entanglement takes place between the two lease rods, then when it reaches the lease rod 4 the same action takes place as when the entanglement engages the lease rod 3. Under normal conditions the weight 13'is sufficient to maintain the strap 6 and link 9 in alinement or nearly so with the bar 16 elevated out of the path of the vibrating feeler 17 As soon as the entangled threads reach the lease rod 3 or lease rod 4, the said rods are moved, as stated, toward the right and the strap 6 and link 9 are flexed at the joint between them so that the link 9 moving about the eye 10 as a pivot is inclined downward to such an extent as to permit the bar 16 to drop until its lowerend is in the path of the feeler 17, the latter being stopped by the bar 16, and

this causes the loom to throw off in the usual manner. -It is immaterial where the defect in the warp threads may occur, since the two lease rods 3 and 4 being held by the weights 13 at each end will move bodily forward under the action of the entangled threads and cause the bars 16 at each end to drop into the path of the oscillating feeler.

The device is attachable to any type of loom having a warp stop motion without requiring any change of the structure of the same, and the invention provides a simple and very efficient means for stopping the loom before the cross or entangled warp threads can bring strain upon the cloth in such a manner as to produce a faulty spot therein.

hat is claimed is l. A draw detecting mechanism for looms comprising a flexible connection having one end attachable to a fixed portion of the loom and the other end directly attachable to one of the lease rods of the loom, said connection being flexible in a direction to move toward and from a feeler and provided with means movable by the flexing of said connection into the path of the feeler, and means for holding the flexible connection normally in a substantially taut condition and thereby sustain the first named means normally out of the path of the feeler.

2. In a loom, a draw detecting mechanism therefor comprising a strap in pivotal connection with a lease rod of the loom, a link pivoted to said strap at one end and pivotally connected at the other end to a fixed portion of the loom frame, connections controlled by the link and movable into operative relation with a feeler in said loom, and yielding means coacting with the lease rods to hold the strap and link in substantial alinement.

3. In a loom, lease rods, a weight connected therewith and acting on the lease rods in opposition to the progressive movement of the warp threads, a strap in pivotal relation to the lease rods at one end, a link pivotally connected to the other end of said strap, means controlled by said link in operative relation to a feeler, and a pivotal support for the other end of the link fast on a fixed portion of the loom frame.

4-. In a loom, lease rods, a weight connected thereto and acting on the lease rods in opposition to the progressive movement of the warp threads, a strap having one end formed into an eye embracing a lease rod, a link pivotally connected to the other end of the strap, a pivotal support for that end of the link remote from the strap, and a bar carried by the link.

In testimony thatwe claim the foregoing as our own, we have hereto affixed our signatures in the presence of two witnesses.

WILLIAM P. PHILLIPS. SAYERS D. EUBANKS.

\Vitnesses E. K. Pown, IV. H. MUSE, Jr.

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