US716373A - Weft-replenishing mechanism for looms. - Google Patents

Description

no. 7|6,373. Patented Dec. 23, 1902.

J. T. BOLTON.

WEFT REPLENISHING MECHANISM FOR LOUIS.

(Application filed Mar. 11. 1902.)

(No Model.)

Inventor;

Attorney;-

rrnn STATES PATENT OFFICE.

JOHN T. BOLTON, OF FALL RIVER, MASSACHUSETTS.

WlEFT-REPLENISHING MECHANISM FOR LOOMS.

SPECIFICATION formingpart Of Letters Patent N0. 716,373, dated December 23, 1902.

Application filed March 11, 1902. Serial No. 97,723. (No model.)

To all 1072/0772, it ntay concern:

Be it known that 1, JOHN T. BOLTON, a resident of the city of Fall River, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in VVeft-Replenishing Mechanism for Looms; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to the mechanism used on some looms to efiect the displacement of an empty bobbin of weft-thread and at the same time replace it by a full one without interfering with the continuous running of the loom.

The object of my invention is to obviate a difficulty met with in providing a sufficient slack or loose thread between the full bobbin and the end of the thread that is made fast to insure the threads drawing off of the bobbin when the shuttle is thrown. The time when this looseness of the weft-thread is required is when the bobbin which contains the thread is transferred from its place in the filling-carrier to the shuttle, the direction of the motion of the bobbinwhile being transferred being directly away from the center of the carrier, around which the ends of the weft-threads on the bobbins in the carrier are usually fastened. It is fully described in the following specification and illustrated in the annexed drawings, in which- Figure 1 is a top View of the weft-carrier and the devices for producing the necessary slackness of the weft with a part of the breast-beam to which the filling mechanism is attached. Fig. 2 shows an end view of the weft-carrier with the outer thread-guide plate removed and part of theshaft to show the contour of the slack-plate and its support.

The following is a description of the constructionand the way in which the device operates to obviate the difficulty.

In the drawings, H denotes the breast-beam of the loom. F is a supporting-plate for the filling-carrier, which consists of the two circular plates A A, between which the full bobbins B are held in recesses in the plates, and a plate J, fast on the outer end of the shaft that carries the plates A A, and with which the plate J turns, serving as a guide for the thread S. (See Fig. l.)

A plate D is held loosely on the shaft T of the filling-carrier, between the plates A and J, and is kept from turning by an arm V, held loosely on a shaft P, that is held in a stud Kon the breast-beam H, or it may be a flat rim instead of a full plate. This plate D is made some larger in diameter than'the plates A A of the filling-carrier to increase the length of the thread S between the plates A and J by carrying the threads out farther. (See Fig. 1.) In Fig. 2, in which the outer plate J is removed to show the plate D more fully, the lower edge of the plate D is shown as being cut away, the gap starting from the point E and running out to full size on the front.

The object of the decrease of the diameter of the plate D at the point E by means of the notch is to allow the thread of a bobbin to become slack just before the bobbin reaches the transferring-point to give it the necessary length of thread, as it is not possible to draw any from the bobbin at that time, to allow the bobbin to be struck down by the hammer M into the position shown by the dotted lines W when the lay L gets quite forward without being liable to break the thread, which it often does, especially on fine goods. The full line shows the position of the lay on its way forward with the shuttle R to receive the full bobbin at the moment the hammer M starts to force said bobbin down into the-shuttle. It is plain that this breaking is caused by there not being sufficient length of thread to admit of the change of position of the bobbin, and the notch in the plate D gives back in slack at the proper time the extra length of thread obtained by carrying it out around the plate D on the line S instead of on the straight dotted line S.

Having thus described my invention, What I claim, and desire to secure by Letters Patcut, is p 1. In a weft-filling mechanism, the combination of a filling-holder, a stationary plate placed between the filling-holder and the point of attachment of the end of the bobbinthreads at the end of the shaft, said plate having its outer circle reduced at its lower side to causeslack in the thread which slides on its l with means for holding the larger plate from 10 periphery, substantially as described. turning, substantially as described.

2. In a weft-filling mechanism the combi- In testimony whereof I have hereunto set nation of afilling-holder, athread-guide plate i my hand this 10th day of March, A. D. 1902. with a point of attachment for the thread; a plate larger in diameter than the filling- JOHN BOLTON holder or the thread-guide plate located be- In presence of tween the filling-holder and said guide-plate, BENJ. ARNOLD,

and provided with a notch on its lower side, i HOWARD E. BARLOW.

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