US767379A - Loom-shuttle. - Google Patents

Description

PATENTED AUG. 16, 1904.

J. O. BROOKS. LOOM SHUTTLE. APPLICATION FILED MAY 19, 1904.

NO MODEL.

U ITED STATES Patented August 16, 1904.

PATENT Orrrcn.

JOHN C. BROOKS, OF MIDDLETOVVN, CONNECTICUT, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPO- RATION OF MAINE.

LOOlVl-SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 7 67,37 9, dated August 16, 1904.

Application filed May 19, 1904. Serial-No. 208,691. (No model.)

To a whom, it may concern:

Be it known that I, JOHN C. BROOKS, a citi- Zen of the United States, residing at Middletown, in the county of MiddleseX and State of Connecticut, have invented an Improvement in Loom-Shuttles, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

The present invention relates to loom-shuttles, and especially to the so-called selfthreading loom-shuttles, and has for one of its objects the production of a shuttle of this type provided with novel means for retaining the weft-thread in the thread-passage leading to the delivery-eye, and for another object the production of a loom-shuttle of this type provided with novel means for breaking or severing the filling upon the occurrence of a float in the warp, thereby causing the prompt stoppage of the loom and avoiding any pickouts.

My novel means for retaining the filling in the thread-passage comprises a gate normally closing said passage, but constructed to be opened by the thread as the latter enters therein.

The thread-parting mechanism comprises a cutter coacting with the gate to sever the thread and rendered operative by the occurrence of a float in the warp.

W'hile the invention has been illustrated in connection with a self-threading shuttle, it is also applicable to other types of shuttles, and it can be used with equal facility in a common shuttle operated in a non-replenishing loom.

In the drawings, Figure l is a plan view of a portion of a shuttle having my improvements applied thereto. Fig. 2 is a side View of the shuttle, a part thereof being broken out to better illustrate the construction of the device. Fig. 3 is a section on the line .70 m, Fig. 1. Fig. 4 is a detail of the parts hereinafter described.

B represents a shuttle-body having the usual side delivery-eye (not shown) and the longitudinal opening B to receive the filling-carrier or bobbin B These parts are of any suitable or usual construction. As herein paratively narrow and provide one end of it with a stationary guard, which prevents the thread from being thrown out of the threadpassage after it has once been inserted. In my improved construction I do away with this stationary guard and make the end of the throat 3 nearest the bobbin comparatively wide, as shown at I, Fig. 1, and provide a suitable automatically-operating gate which normally closes the throat of the thread-passage, but permits a thread to enter therein when the shuttle is threaded. In the present form of my invention this gate is designated by 5, and it comprises a member pivotally mounted on one wall 6 of the threading-block and having one arm 7 thereof projecting across the throat of the thread-passage, as best seen in Fig. 3. I prefer to make this gate in the form of a gravity-actuated gate, and for this purpose extend the end 8 thereof through the wall of the threading-block, said wall being recessed for this purpose. The end 8 acts as a counterweight to hold the gate normally in the position shown in Fig. 3. Said end 8, however, is only slightly heavier than the end 7 the difference in weight between the two ends of the gate being so small that as the thread enters the throat 3 and bears against the gate the tension on said thread will swing the end 7 of the gate downwardly and away from the wall 14 of the threading-block, thus opening the throat of the thread-passage. The thread then passes ofi from the end 7 of the gate and the latter closes by its own weight and holds the thread in the thread-passage 25.

When the automatically-operating gate is employed for holding the thread in the threadpassage, the throat 3, leading to said threadpassage, may be made wider than is possible where a stationary guard is employed and the operation of threading the shuttle thus made more sure.

Coacting with the gate 5 is a suitable device which operates to part or sever the weftthread when a float occurs in the warp. In the form of my invention herein illustrated such means comprises a lever 10, pivotally mounted on the side wall of the shuttle, as at 11, and having one end 12 shaped to extend normally slightly above the side wall of the shuttle-body. The other end of said lever is bent inwardly, as at 13, and extends through a suitable aperture in the wall 6 of the threading-block, said. bent end of the lever being formed with a cutting-blade 14, which lies in a recess in the shuttle immediately below the thread-passage t.

I prefer to make the end 7 of the gate with the two branches or arms 15 and to so locate said gate with reference to the cutting-blade 1 L that said blade lies directly below the space between said arms.

The counterweight 8 is directly above the portion 13 of the lever 10, as best seen in Fig. 1.

The float-detecting lever 10 is normally held in the position shown in Figs. 2 and 3 either by making the end 13 thereof sufliciently heavy to overbalance'the projecting end 12 or by using a suitable spring or its equivalent.

The parts, as shown in Figs. 2 and 3, are in their normal position, from which it will be seen that after the shuttle is threaded the thread 16 can pass freely through the threadpassage to the delivery-eye as the shuttle is shot back and forth through the shed. When, however, the shuttle in passing through the shed encounters a float, and is thereby lifted to make an overshot, the warps above engage the end 12 of the float-detecting lever, and thereby raise the end 13 thereof, said lever swinging about its pivot 10. The upward movement of the end 13 of said lever brings said end against the arm 8 of the gate, raises said. arm and swings the arm 7 downwardly, said arm 7 cooperating with the knife or blade 14, which passes up between the two branches of the arm to sever or cut the weft-thread. Upon the cutting of the weft-thread the loom is promptly stopped by any suitable mechanism employed for that purpose.

Manifestly the float-detecting and threadsevering mechanism may be applied to any common shuttle as well as to one provided with an automatic self-threading device.

My invention is not limited to the details of construction herein illustrated, as these may be varied in many ways without departing from the spirit of the invention expressed in the appended claims.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a loom-shuttle havinga delivery-eye, a threading-block having a thread-passage lead.-

ing to said eye, and a pivoted gate normally closing said passage and constructed to be opened by the thread entering the same.

2. In a loom-shuttle having a delivery-eye, a threading-block having a thread-passage leading to said eye and a gate normally closing said thread-passage and held in its normal position by gravity, said gate constructed to be opened by the thread entering said passage.

3. In a loom-shuttle having a delivery-eye, a threading-block having a thread-passage leading to said eye, a gate pivoted to one wall of said threading-block and normally closing said thread-passage, said gate being held in its closed position by gravity and constructed to be opened by the thread entering said passage.

1. Inaloom-shuttlehavinga delivery-eye, a threadingblock having a thread-passage leading to said eye, a gate normally closing said passage but constructed to be opened by the thread entering the same, and means cooperating with the gate to part the thread upon the occurrence of a float in the warp.

5. In a loom-shuttle havinga delivery-eye, a threading-block having a thread-passage leading to said eye, a pivoted gate normally closing said passage and constructed to be opened by the thread entering the same, and means cooperating with said gate to part the thread upon the occurrence of a float in the warp.

6. In a loom-shuttle having a delivery-eye, a threading-block havinga thread-passage leading to said eye, a gate pivoted to one wall of said threading-block and normally closing said thread-passage, said gate being held in its closed position by gravity and constructed to be opened by the thread entering said passage, and means cooperating with said gate to part the thread upon the occurrence of a float in the warp.

7. In a loom-shuttle having a delivery-eye, a threading-block having a thread passage leading to said eye, a gate normally closing the entrance to said passage but constructed to be opened by the thread as it enters the latter, and automatic means to sever the thread upon the occurrence of a float in the warp.

8. In a loom-shuttle having a delivery-eye, a threading-block having a thread-passage leading to said eye, a member normally extending across the entrance to said passage, a cutting-blade, and means to move said blade relative to said member upon the occurrence of a float in the warp whereby the thread is severed.

9. In a loom-shuttle having a delivery-eye, a threading-block having a thread-passage leading to said eye, a forked member normally extending across the entrance to said passage, a cutting-blade, and means to move said blade relative to said member upon the occurrence of a float in the warp whereby the thread is severed.

10. In a loom-shuttle having a delivery-eye and a thread-passage leading to said eye, a

pivoted member occupying a position above the thread in said passage, acutting-blade be-- low the same, and means to move said member and blade toward each other upon the occurrence of a float 1n the warp whereby the weft-thread is severed.

11. In a loom-shuttle having a delivery-eye, a thread-passage leading to said eye, a pivoted forked member situated above the thread, a pivoted float-deteetor having a cutting-blade occupying a position below the thread, said. pivoted forked member having a portion to a be engaged by the float-detector when the latter is operated by a float in the warp, whereby said forked member moves toward the cutting-blade.

12. In a loom-shuttle having adelivery-eye, a threadingblock having a thread-passage leading to said eye, a forked gate normally closing the entrance to said passage, a floata position beneath the thread-passage, whereby the occurrence of a float in the warp moves the bent portion of the float-detector toward the gate and thus severs the weft.

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

JOHN o. BROOKS.

Witnesses:

WALTER (J. JONES, ROBERT E. HARTMAN.

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