USRE12371E - Loom-shuttle - Google Patents

Description

No. 12,371. RBISSUED JULY 11, 1905. c. B. WEBSTER.

LOOM SHUTTLE.

APPLIUATION FILED JUNE 22, 1904.

witnesses Inventor 072061186 B. websier'.

UNITED STATES Reissued July 11, 1905 PATENT- OFFICE.

CHARLES B. WEBSTER, 'OF FALL RIVER, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO JAMES K. LANNING, OF BOSTON, MASSACHUSETTS.

LOOM-SHUTTLE.

SPECIFICATION forming part of Beissued Letters Patent No. 12,371, dated July 1 1, 1905.

Original No. 753,337, dated March 1, 1904:. Application for reissue filed June 22, 1904. Serial No. 213,743.

To all whom it may concern:

Be it known that I, CHARLES B. VVEBsTER, a citizen of the United States, residing at Fall River, in the county of Bristol and State of Massachusetts, have invented new and useful Improvements in Loom-Shuttles, of which the following is a specification.

This invention relates to shuttles for looms; and its object is to provide a self-threading to shuttle of simple and cheap construction and which will not become accidentally unthreaded.

In the accompanying drawings, Figure lis a side elevation of one end of a shuttle containing my improvements. Fig. 2 is a top plan View of the same. Fig. 3 is a cross-section on the line 3 3, Fig. 2. Fig. 4 is a longitudinal section on the line 4: 4, Fig. 2. Fig. 5 is a side elevation of the thread-guid e. Fig. 206 is a front elevation of the same, and Fig. 7

is a bottom plan view thereof.

In the solid end portion of the shuttle 1 is cut a longitudinal slot or recess 2, extending down from the top of the shuttle to about its center. This slot opens at its rear end into the hollow body of the shuttle. At its front end is a lateral recess 3, somewhat deeper than .the slot 2 and'extending nearly to the outside .of the shuttle. Near its lower end is a circular hole L in the side of the shuttle, and a narrow thread-entering slit 5 runs from the top of the shuttle down to the top of the hole L. The thread-guide is shown separately in Figs. 5, 6, and 7. It is preferably cast inone piece and comprises a flat semicircular head 6, a shank 7 at right angles therewith, and a tubular eye portion .8 at the lower end-of the shank, projecting toward the end-of the outside of the shuttle and adapted to fit in the hole 4. The outer end of the eye portion is beveled downwardly, and a thread-inlet slit 9 runs along the bottom of the eye its entire length. At its inner endsaid eye portion is cut away in front of the slit, as indicated at wall portion curving toward the slit, but the cut-away portion forms a curved heel over which the thread readily slips into the slit.

A screw 11 passes up. through the solid part 10, so that the guide not only presents a flat of the shuttle and into a tapped hole 12 in the head of the thread-guide, holding the head 6 firmly down on a shoulder 13, formed by a shallow recess 14L in the top of the shuttle. The front of the head 6 is chamfered off on: derneath at 15, so as to have a space between it and the top of the shuttle. Furthermore, the shank does not touch the front wall of the lateral recess 3 nor does the eye portion 8 touch the front and bottom of the hole 4:.

To thread the shuttle, the thread is laid in the slot 2 and carried forward and under the front end of the head 6, then down through the thread-entering slit 5 into the hole4, then up through the thread-inlet slit 9 into the tubular eye portion 8, this movement of the thread being facilitated bythe cut-awayportion 10. In this position the thread will not drop down through the slit 9 of its own accord, since it is held up in the inner end of the eye portion by the bottom of the slot 2, which stands above the bottom of the eye portion. as shown in Figs. 3 and 4..

The location of the thread-inlet passage or slit 9 below the bottom of the longitudinal slot 2 provides means which effectually prevents any tendency to unthread from the interior. When the thread is under slack tension, however, during operation of the shuttle, it tends to enter or work into any available exterior openings or passages adjacent the eye of guide and to start unthreading exteriorly or to jam and break through entanglement.

In theshuttle described the; thread after entering the thread-guide is prevented from reentering the thread-inlet passage 9 and from any tendency initially to unthread by the bev: eling or recessing of the outer face of the thread-guide at the point where the said inletpassage enters the same, thereby causing the shuttle-walls to project relatively beyond the mouth of the said passage. The normal draft of the thread leading through the thread-guide is thereby maintained at all times out of the mouth of the inlet-passage, for in periods of slack tension, where otherwise there would be mouth and with the throw of the shuttle to unthread or jam and break, the relatively proa tendency for the thread to enter the passage- 7 jecting shuttle-wall causes the thread-draft always to be above and out of the said passage-mouth.

It will be seen that the threading-passage consists of the thread entering slit 5, the thread-inlet'slit 9, and the connecting-passage which joins the said entering and inlet passages, said connecting-passage being formed on one side by the bore of the hole at and on the other by the outer wall of the tubular eye. The beveling or recessing of the outer face of the thread-guide permits the upper outer wall thereof, which is substantially flush with the outer shuttle face, to act as a threadguard for the mouth of the passage or slit 5 where the latter joins the connecting-passage formed'in the hole 4. This prevents possible jamming or unthreading, which might result from the entrance of the slack thread into the otherwise exposed mouth of the passage 5.

I claim 1. The combination with a shuttle having a longitudinal slot and lateral recess, of a threadguidein said recess having a tubular eye portion provided with a slit below the bottom of said slot.-

' 2. The combination with a shuttle having a longitudinal slot, a lateral recess, a hole through the side of the shuttle near the bottom of said lateral recess and a slit extending from the top of the shuttle down to said hole, of a thread-guide in said lateral recess having a tubular slitted eye portion at its lower end enteringsaid hole.

3. A thread-guide for a shuttle having a head, a shank perpendicular thereto, and a tubular eye portion transverse to said shank and provided with a slit in its bottom.

4. A thread-guide for a shuttle having a head 6 chamfered off underneath at 15, a shank '7 perpendicular to said head, and a tubular eye portion 8 transverse to said shank and 10 atthe inner end of said slit.

5. A hand threading shuttle having a thread-guide in the delivery-opening thereof, said thread guide being provided with a thread-inlet passage and an outer beveled face receding from the shuttle-face.

6. A hand threading shuttle, having a thread-guide in the delivery-opening of the shuttle and provided with threading means,

comprising an enteringpassage leading through the body of the shuttle to a non-circular face of the thread-guide, an inlet-pas sage leading into said thread-guide and guarded from the entrance of the threaded filleryarn, and a passage connecting the two passages, said latter passage being formed on one side by the body of the shuttle and on the thread-inlet passage leading thereto, means near the mouth of said guide for preventing the thread from entering the mouth of said inlet-passage, and means for maintaining the thread near the inner end of said guide at or near the side of said thread-guide opposite to said inlet-passage.

9. A hand-threading shuttle having a lateral thread-guiding passage, a thread-guide in said passage, a thread-entering passage near the bottom of said guide, and a shuttle-Wall portion for maintaining the thread out of the mouth of said thread-entering passage.

10. A thread-guide for a hand-threading shuttle having a thread-inlet passage and an outer face beveled toward said inlet-passage.

11. A thread-guide for a hand-threading shuttle having a thread-guiding passage and an entering-passage, said guide having a flat outer wall portion curved to and toward said entering-passage.

12. A thread-guide for a hand-threading shuttle having a thread-guiding passage, an entering-passage for said guide and a curved heel at the inner end of said guide for guiding the thread into the thread-entering passage.

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

CHARLES B. WVEBSTER. Witnesses:

MILTON DRUOE, S. W. ASHTON.

Images