US797477A - Loom-shuttle. - Google Patents

Description

No. 797,477. TATBTTTTTD AUG. 15 1905. 0. B. WEBSTER. LOOM SHUTTLE.

APPLICATION FILED DBO.1, 1904,

unirsi) sTAfrns Barrena? ernten.,

CHARLES B. WEBSTER OF FALL RIVER, it/IASSACHUSFTT, ASSlGNOR, OF @NE-HALF T() JAMES K. LANNING, OF BUSTON, MASSACHUFBETTQ.

To all nih/071i, it 'may concer/t:

Be it known that I, CHARLES B. WEBSTER, a citizen of the United States, residing at Fall l'vtiven in the county of Bristol and State of Massachusetts, have invented an Improvement in Loom-Shuttles, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention consists in new and useful improvements in loom-shuttles, and particularly in hand-threading shuttles wherein the filling-thread is guided by the hand of the weaver into the delivery-eye of the shuttle.

M y invention consists not only in improvements by which the construction of such shuttles is materially simplified and improved, but also .in the provision of means whereby the threaded filling-thread is prevented from detl'ireading or entangling entrance into the open threading-slot at either end thereof.

ln the drawings, Figure 1 shows in plan the head or forward end of a shuttle embodying one form of my invention, the threaded position of the yarn being shown in full lines and a position reached during threading being shown in dotted lines. Fig. 2 shows a similar view in side elevation. Fig. 3 is a sectional plan taken on the line 3 3 in Fig. 2. Fig. t is a vertical transverse section taken on the line il; l in Fig. l and looking' toward the forward end of the shuttle. Fig. 5 is a similar section taken on the line 5 5 in Fig. l and looking' toward the rear of the shuttle. Figs. t3, 7, and 8 are details showing the threadguide in front, sido, and rear elevation, respectively.

My invention is concerned with the construction and relation of the thread-guiding passages and may be applied to any ordinary or usual form of shuttle, such as the one here shown, which has the usual shuttle-body e, the spindle-recess and the spindle s.

Leading forward from the spindle-recess b is a longitudinal thread-guiding passage c of any suitable shape, but preferably round, and, as here shown, having a flaring mouth and being' substantially coaxial with the spindle. This longitudinal passage leads to and connects with a transverse passage (Z, the latter being cut into the shuttle-head through the shuttle side, from which the thread is delivered. The passage Z is of a suitable shape,

`preferably, as herein, of a generally circular pecification of Letters Patent.

Application filed December l. 1904.

:Patented lling. lb, 90a

Serial No. 23d-,998,

cross-section, to receive the preferably metallic thread-guide e. '.lhis thread-guide e may have any suitable shape; but in the illustrated embodiment of my invention shown it com prises the cylindrical shank e', herein solid, and the guiding portion e2, herein bored to provide a thread-guiding passage fr". The passage ti terminates in a iiared mouth at the outer beveled face e' of the guiding portion e, and the thread is permitted entrance to the passage through the slit e5 near the bottom of the guide. At the rear of the guiding' portion e the guide e" is cut away to form a lateral notch or recess, which communicates with the bore e* and the slit e, and the shell-like face which overhangs between the. slit and the recess is beveled upward and backward and the corner thereof rounded to form the guiding-heel @7, so that a thread, if drawn downward and over the said heel, will be naturally and easily drawn into the threac'l-guiding passage. '.lhe thread-guide is forced into the passage l! until the shank e' seats itself at the end of said passage, the proportions of the parts being such that the upper part of the beveled face is then about flush with the side walls of the shuttle. A projecting lip e is preferably formed upon some part of the thread-guide, and the passage (Z is cut away to correspond thereto, such lip serving' to locate and position the guide when inserted. l/Vhen in position, the lateral recess e" upon the threadguide alines with the longitudinal passage c, which latter is preferably slightly above the axis of the thread-guide, and the thread when threaded passes through the said passage down and against the recess e and then through and outof the lateral thread-guiding passage e, as shown in full lines in Fig. l.

For the purpose of quickly and manually guiding the thread to the passage e3 l have provided open thread-entering slotsI or passages as follows: A vertical arc-shaped slit]L is eut in the top of the shuttle-head and sweeps from a point at f', Fig. 1, over and above the location of the thread-guide recess e" and over the longitudinal passage e, terminating above the Haring mouth of the latter and so related to its mouth, Fig. il, as to approach it in a tangent to form an overhanging` guarding-lip f, the object of which will be referred to. rlhis vertical slit can be formed by a single cut of a cylindrical saw and is the only elit or passage necessary for the top of the shuttle,

although I have herein shown a rectangular hole gf which may be cut, if desired, for inspection ofthe thread-guide. Connection between the vertical slit f and the transverse passage Z is formed by a single horizontal slit t, (see Fig. 2,) which is preferably in or about the plane of the axis of the passage c. The overhanging wall e" at one side of the slit e5 is preferably of a lesser radius than the wall on the opposite side of said slit, so that when the thread-guide is seated in the passage Z a connecting-passage 'z is formed between the wall e" and the body of the shuttle,such passage connecting the horizontal slot /L and the threadentering slit c. This overhanging wall is flattened opposite the slit 7L, but curves downwardly and toward the slit Vhen the shuttle is to be threaded, the thread is drawn into the inner end of the vertical open threadingslot f downward until it reaches the horizontal slot L, backward to the thread-guide e9, and then downward and into the slit e5. The disposition of the passages is such that this is accomplished by what is practically a single movement of the hand. For the moment the thread is drawn across theface e of the threadguide the continued tension upon it slips it down over the heel e7 and forces it into the thread-guiding passage @Band into the position shown in full lines in Fig. l. W'hen threaded, the yarn is prevented from rentering the open threading-slot at any point. At the delivery-eye of the shuttle the b eveling of the outer face of the thread-g'uide causes the shuttle-wall to project relatively beyond the exposed mouth of the thread-entering slot c, and the normal draft of the thread therefore maintains the latter out of the mouth of such slot. rlhis result is further assisted by the fact that the thread is caused to pass over the elevated guiding-walle10 of the guide and is thereby maintained above and away from the mouth of such slot throughout its length. At the entering end of the thread-guiding passage the thread is also maintainedout of the open threading-slot f, (see Figza for the convolutions of the thread as theyl leave the bobbin do so in left-handed rotation, and the outgoing strand thereof when it deviates from an axial line does so by gyrating about the axis of the spindle in a left-handed direction, passing' over but ne-ver under the lip f2.

The ballooning of the thread-that is to say, the too rapid unwinding and release from the bobbin of the successive spiral convolutions of the yarn-is responsible for much of the dethreading and trouble with hand-threading shuttles. lith my shuttle the dethreadingentrance of the thread into the open threading-passage at its entrance end from ballooning or any other cause is prevented.

The shuttle herein described is extremely simple in its manufacture, the wooden body of the shuttle having been utilized to the greatest possible degree, but in a very simple manner. to form the thread-entering and threadguiding passages. The thread-guide may be cast of metal, if desired, and the shuttle prepared for its reception in substantially four operations only-namely, the boring of the longitudinal passage c of the transverse passage (Z, cutting the saw-slit f, and then the slit L. Although thelip es may be wholly relied upon to positionk the guide, the pin p may also be inserted, if desired. The finished shuttle presents no irregularities in contour, and although having' an open thread-entering slot substantially all the exposed portion thereofl is comprised in the narrow continuous slit f and the similar shorter slit It.

I have herein shown for illustrative purposes one form of my invention. It is to be understood, however, that my invention is in no wise limited to the details thereof, but that the same may be .embodied in many di'erent forms without departing from the spirit thereof.

I claiml. A hand-threading shuttle having a threadguiding' passage leading' from the spindle-recess, said passage being substantially circular in cross-section and cut in the body ofthe shuttle, and an open threading-slot leading' to said passage, the inner exposed mouth thereof being substantially tangential to the exposed mouth ofsaid threadguiding passage and forming thereby an overhanging lip in the body of the shuttle.

2. A hand-threading shuttle having' an unbushed thread-guiding' passage leading from the spindle-recess, an open threading-slot leading to said passage, and means for preventing the entrance of the threaded yarn into said open threading-slot.

3. A hand-threading shuttle having a passage of cylindrical bore leading from the spindle-recess and a slot leading from the top of the shuttle-head to said passage, and cut crosswise the latter.

4. A hand-threading shuttle having longitudinal and transverse threadguiding passages, a vertical slot leading from the spindle-recess to the outer shuttle-face and a horizontal slot leading from said slot to said transverse thread-guiding passage.

5. A hand-threading shuttle provided with an unbushed longitudinal thread-passage, and a transverse thread-passage, the latter provided with a thread guide and a vertical thread-entering slot leading from the spindlerecess to the right face of the shuttle.

6. A hand-threading shuttle provided 'with longitudinal and transverse threadguiding' passages and an arc-shaped slot leading thereto from the upper face of the shuttle.

7. A thread-guide for a loom-shuttle having a thread-guiding passage, a beveled face, a thread-entering slit and a thread-guiding wall of said slit.

'remt/r il. A thread-guide fora loom-shuttle having a tln'ead-guiding passage and a slit leading thereto, a lateral recess, said guide having a lat outer Wall portion curving to and toward said slit and said lateral recess.

9. A thread -guide for a loom-shuttle having a bore, aslit leading to the bore, a lateral recess also leading to the bore, and a guiding'- heel between the slit and the reeess.

l0. A hand -threading shuttle having a tln'ead-guiding passage leading from the spindle-recess to the side of the shuttle, and a threading-slot leading from the outer surface of the shuttle to said thread-guiding passage; thread-guiding means at the exterior end ol said thread-guiding passage for preventing' the threads from beginning to reenter said tlu'ead-guiding passage; and a guiding-hole being formed at the interior end et' said threadguiding' passage from the wooden body of the shuttle and substantially coincident with the linear extension ot' the spindle, the said threading-slot intersecting said guiding-hole in a substantially tangential manner and in a direction opposed tothe unwinding movement el the yarn 0n the spindle.

11. thread-guiding pieee for hand-threading shuttles, said piece being substantially cylindrical in general formand having a heveled outer end, with a central, tln'ead-guiding passage leading' to one end thereof; a threading-slot eut from the outer surface and communicating with the said thread-guiding passage; and a holding or positioning shank extending in a direction opposite to said threadguiding passage.

12. A thread-guiding piece for a handthreading shuttle substantially cylindrical in general form with a central tln'ead-guiding passage leading' to one end thereof', a threading-slot eut from the outer surface and connecting with the said thread-guiding passage, and a holding or positioning shank extending in a direction opposite to said tln'ead-gliiding passage and a `projeetiitg lip to position said guide.

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

CHARLES B. l/VEBE'B. TER.

l/Vitnesses:

.NICHOLAS Harn away, J r. THOMAS F. Hide-Ins.

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