US577441A

US577441A - James e

Info

Publication number: US577441A
Authority: US
Publication date: 1897-02-23
Anticipated expiration: 1914-02-23

Description

(No Model.)

J. B. MARTIN. WEFT CONTROLLING MECHANISM FOR LOOMS.

Patented Feb. 23; 1897.

I I nvento r. J. E Mart: n.

Witnesses.

,tightly up against the edge of the shed or Uwrrnn Sterne JAMES E. MARTIN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE CARPET LOOM COMPANY, OF SAME PLACE.

WEFT-CONTROLLING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent NO. 577,441, dated February 23, 1897.

Application filed September 19,1896. Serial No. 606,366. (No model.)

T0 on whom it may concern:

Be it known that I, JAMES E. MARTIN, a citizen of the United States, residing at Worcester, in the county of WVorcester and State of Massachusetts, have invented a new and useful Improvement in Weft-Controlling Mechanism for Looms, of which the following is a specification.

My invention relates to a means for controlling the weft-thread in a loom in which the weft is inserted in the form of a loop, such, for example, as is done in the ordinary needle-loom used for weaving moquette carpets, and is especially adapted to the needleloom shown and described in an application for patent filed by me February 26, 1896, Serial No. 580,872.

My invention consists in providing aloom of this character with a stationary weft-horn, and with mechanism for lifting the weft oif of the horn and for replacing the weft around the horn at the proper times. In looms of this character it is desirable and necessary to prevent the loop of the weft from pulling on the edge or selvage of the shed or warpthreads while the weft is being inserted in the shed, and to allow the Weft to be pulled warp after the weft has been carried through the shed.

In the accompanying sheet of drawings I have shown only the detached mechanism of the loom that is necessary to carry out my invention.

Referring to the drawings, Figure 1 is a side elevation of the parts of the loom to which my invention is applied. Fig. 2 is'a plan View of part of the same, and Fig. 3 is an isometric view of the weft-controlling mechanism.

Referring to the drawings and in detail, 100 designates the usual breast-beam, 101 the usual oscillating lay, and 102 one of the power-shafts of a loom of the character referred to.

103 designates a bracket which is rigidly secured to the loom-frame in any desired manner. This brackethas an extending arm 105, which carries a stud, on which stud is journaled a bell-crank lever 106, which part I term the detacher. Secured in the sta tionary bracket 105 is a pin or horn 104, which I call the weft-horn. The detacher 106 is normally kept in one position by-means of a spring 107. Connected to the lower end of the detacher 106 is a rod or link 108, which extends to the rear of the loom and has a slotted end, as shown. Engaging the slotted end of this link 108 is a pin carried by a rocking lever 109, which is carried by a stud or shaft 110. This lever 109 carries a roller 119, whichbears on the face of a cam 111, secured on the shaft 102. The cam 111 has a number of projections, as 112, as shown, which are so arranged that at the proper time the lever 109 will be moved to the right and the upper end of the detacher 106, by the connections previously described, thereby lifted.

A piece of wire 113 is rigidly secured to the bracket 103, and is bent, as shown.

The upper end of the detacher 106 is provided with a recess 114, and the end of the same is pointed, as shown, so that a guideway will be formed between the end of the detacher 106 and the end of the wire 113. I call this piece of wire a retainer.

Any of the usual forms of weft carriers or inserters may be used.

I have shown in Fig. 3 the usual needle 117, commonly used for this purpose.

Mounted on the end of the lay 101 is a suitable bracket, to which is secured a part 115, which I term the guide, and also secured to said bracket is a cam 116. Theguide 115 and the cam 116 may be adjusted on the bracket so as to properly operate. The weftthread is designated by the numeral 118.

The operation of this mechanism is as follows: In Fig. 3 the weft 118 is shown as looped around the stationary weft-horn 104 and the weft-carrier 117 as moving forward to insert the weft into the shed. As this operation takes place the loop of the weft, passing around the stationary horn 104, will be held from hearing on the edge of the warp or shed. At the proper time the cam 111 will operate the lever 100, which, by the connections described, will raise the upper end of the detacher 106 so that the loop of the weft will be raised off of the weft-horn 104, whereby as the tension device acts this part of the weft can be drawn tightly against the edge of the shed. As the filler or needle 117 is withdrawn from within front of the lay 101 the lay will beat up the loop of filling just inserted. As the lay moves forward toward the breast-beam 100 the guide 115 will strike against the weft, of which there is only a single thread between the lay and the breast-beam, as the needle 117 is out of the way and will push the sameinto the guideway formed between the point of the detacher 106 and the end of the retainer 113. As the lay continues its forward movement the cam 111 will bear on the lower side of the end of the detacher 106 to raise the same so that the guide 115 can push the weft along the top of the detacher 106 into the notch 114. Then as the lay retreats and the filler or needle 117 again advances the weft will be looped around the horn 101, as the detacher will drop to its normal position, as shown in Fig. 1. By this means a very simple and accurate weftcontrolling mechanism is provided, and one which will greatly facilitate the action of the loom, as with a stationary weft-horn the weft that has been woven will. be held accurately and nicely in place as the next loop is illserted.

I may in some instances omit the retainer 113, but the same is useful in holding the weft after the same has been looped or lifted onto the stationary horn in position until the needle 117 has entered between the lay and the breastbeam.

Of course when the detacher is lifted the weft is not under the retainer 113, as the loop then is entirely inside of the retainer 113, as indicated in Fig. 2.

I am aware that looms have been provided with movable weft-horns, as shown, for example, in United States Letters Patent to E. B. Bigelow, No. 18,820, granted October 6, 1857, or in Letters Patent to H. Skinner, No. 285,767, granted September 25, 1883, but my invention greatly simplifies the operation, as by using a stationary weft-horn all that is necessary is to detach the weft therefrom and replace the same on the weft-horn at the proper times, which can be done much more readily than to move the weft-horn to various positions.

Of course my invention can be applied to a loom in which the weft is inserted by other means than a needle, and the details herein described may be greatly varied by a skilled mechanic without departing from the scope of my invention as expressed in the claims.

Having thus fully described myinvention, what I claim, and desire to secure by Letters Patent, is

1. The combination in a loom of a stationary weft-horn and mechanism for detaching the loop of weft from the horn, substantially as described.

2. The combination in a loom of a stationary weft-horn, means for lifting the loop of weft off of the horn, and mechanism for replacing the weft in position to engage the horn, substantially as described.

3. The combination in a loom of a stationary weft-horn, mechanism for detaching the weft from the horn, and means carried by the lay for replacing the weft in. position to e11- gage the horn, substantially as described.

4. The combination in a loom of a stationary weft-horn, a movable detacher, and means for replacing the weft in position to engage the horn, substantially as described.

5. The combination in a loom of a stationary weft-horn, a movable detacher, a retainer, and means for replacing the weft in position to engage the horn, substantially as described.

6. The combination in a loom of a stationary weft-horn, a movable detacher, a guide and cam carried by the lay for replacing the weft in position to engage the horn, substantially as described.

7. The combination in a loom of a stationary weft-horn, a movable detacher, cam mechanism for lifting the detacher, a guide and cam carried by the lay for lifting the detacher and carrying the weft in position to engage the horn, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JAMES E. MARTIN.

Witnesses:

LOUIS W. SOUTHGATE, PHILIP W. SoU'rHGA'rE.