US1538639A - Automatically-threading loom shuttle - Google Patents
Automatically-threading loom shuttle Download PDFInfo
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- US1538639A US1538639A US741129A US74112924A US1538639A US 1538639 A US1538639 A US 1538639A US 741129 A US741129 A US 741129A US 74112924 A US74112924 A US 74112924A US 1538639 A US1538639 A US 1538639A
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- thread
- shuttle
- casting
- bobbin
- threading
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J5/00—Shuttles
- D03J5/24—Tension devices
Definitions
- This invention relates to automatically threading loom shuttles employed in looms wherein the weft or filling thread isautomatically replenished from time to time.
- the filling is wound in the reverse direction upon the filling carrier or bobbin, that is, looking at the tip end of the filling carrier, the filling is wound ina clockwise direction, so that when the filling nnwindsas the shuttle @is picked, it will whirl in a contra-clockwise direction.
- One of the objects ofthepresent invention is to provide an automatically threading loom shuttle of the thread casting type, such as shown and described in th 'Stimpson patent, that it may be employed with a reversely or left-wound hobbin.
- Fig. l is a perspective view of an auto matically threading shuttle of the thread casting type having the present invention associated therewith, and shown as employed in connection with a reversely or left-wound bobbin, part of the shuttle be ing broken away;
- Fig. 2 is a perspective detached detail showing a threading block containing the present invention
- Fig. 3 is an enlarged longitudinal section through the threading block and thread direction reverse of the wind in the Stimpson for use in connection with the usual rightwound bobbin.
- the shuttle 1 is provided with the usual bobbin chamber 2 in which is supported the usual filling carrier or bobbin 3.
- the means for detachably holding the filling carrier or bobbin in the shuttle, as by use of the bobbin holding jaws, is not herein shown because it forms no part of the present invention.
- the shuttle 1 is provided with a threading block receiving chamber 4 formed in the front end of the shuttle, and a frontwardly extending recess 5. Communicating with the longitudinally extending thread passage. which is shown as formed in the threading block, the shuttle is provided with a side delivery eye 6.
- the threading block 7 has the side walls 8 and 9 formed to fit the side walls of the threading block receiving chamber 4, and at the side of the threading block adjacent the side delivery eye 6 of the shuttle is the thread director 10, the tip end portion 11 of which is turned laterally with a tapering end constructed and arranged to shed any loop or thread that may be caught thereon, as more fully explained in the Stimpson patent hereinbefore referred to.
- the threading block 7 has the longitudinally extending thread passage 12 which is substantially unobstructed by any overhang, guard or similar device which would interfere with the ready exit or entrance of the thread.
- the filling carrier or bobbin 3 has the filling 13 wound thereon in a clockwise direction looking towards the tip of the filling carrier or bobbin, and consequently as the weft or filling thread a is drawn when the shuttle is picked, the filling thread takes a course in a direction substantially as indicated by the arrow in Fig. 5.
- Mounted in the thread passage is the thread casting and guiding device 14 which, as shown, extends from the side of the thread passage opposite the side delivery eye 6 and thread director 11, with the result that when the filling thread a is withdrawn from the bobbin as the shuttle is picked, the course of the thread will correspond to the genfrom the filling carrier or bobbin eral curve of the thread casting and guid ing device 14.
- the thread casting and guiding device 14 has an upwardly, laterally and frontwardly extending thread casting portion 15 which starts preferably at a point adjacent the bobbin chamber, the construction being such that on the formation of a loop or overthrow when the shuttle is arrested at the end of its flight, the weft or filling thread (L will engage the upwardly, laterally and frontwardly extending edge 15 and be thrown from the thread casting device upwardly and. it may be, entirely longitudinally extending thread passage.
- the thread casting and guiding device 14 has abase portion 16 which extends downwardly into the receiving recess 17 of the threading block, and its lower edge portion is preferably turned laterally, as at 18, to provide a firm and steadying hearing at the under side of the threading block. lVith the construction described, the thread casting and guiding device 14 as well as the threading block 7 may be advantageously and conveniently secured in the shuttle by the usual cross-bolt 19.
- the thread casting and guiding device 14 is conveniently formed as a scroll, as shown, the frontwardly extending edge portion 20 of which extends frontwardly in the thread passage, substantially as shown and described in the Stimpson patent, hereinbefore mentioned, with the exception that the thread casting and guiding device when used with a left-wound or reversely wound bobbin is located in the thread passage, so i that the thread casting portion 15 thereof starts at a point at the left of the thread passage and extends upwardly, laterally and frontwardly therefrom, to thereby cast the thread of the reversely or left-wound bobbin when a loop or overthrow occurs as the shuttle is arrested at the end of its flight.
- the threading block 7 has a bridge portion 21 over which the thread is drawn when the shuttle is picked, and frontwardly of the bridge portion 21 is a horn or deflector 22 below which the thread passes, as indicated in Fig. 1', when the shuttle is fully threaded and the thread is being delivered from the side delivery eye.
- thread 0 as it is drawn from the filling carrier or bobbin during the flight of the shuttle, whirls in apath determined by the wind of the thread upon the filling carrier or bobbin, and an important feature of the present invention, therefore, consists in a guide located in the thread passage for directing the thread thread casting and guiding device as the wholly or partially unthreaded shuttle is picked.
- the thread guide indicated at 23 extends from the side of the thread passage preferably in a downwardly inclined direction, ig. 5, towads that side from which the thread casting and guiding device assumes its initial position.
- the guide 23 is locatedas indicated in 6', that is, it ex tends downwardly in an inclined direction from the side of the thread passage towards the opposite side thereof to which the thread casting and guiding device is secured, so that in the whirling action of the thread from the usual wound bobbin. the guide 23 will direct the thread into control of the thread casting and guiding device.
- the thread casting portion 15 starts from a point preferably adjacent the bobbin chamber in an upwardly, laterally and frontwardly extending direction from the left side of the thread passage, and the guide 28 extends from the opposite side of the thread passage in an inclined downwardly direction to direct the whirling thread into control of the thread casting and guiding device.
- the thread casting and guiding device is employed in connection with a rightwound bobbin, as indicated in Fig. 6, it will be secured in the thread passage with its thread casting portion 15 extending upwardly, laterally and frontwardly from the right side of the thread passage and the guide 23 will extend from the opposite side of the thread passage in a downwardly inclined direction, as indicated in Fig. 6, the effect being that the guide 23 whether used with a right or left wound bobbin will direct the thread more accurately into control of the thread casting and guidlng device as the wholly or partially unthreaded shuttle is picked.
- An automatically threading loom shuttle having a thread passage extending longitudinally thereof, a side deliver eye communicating with the thread passage, a thread casting and guiding device in the it will strike the guide thread passage constructed and. arranged tocast the thread and partially or wholly unthread the shuttle on the occurrence of an overthrow as the shuttle is arrested at the end of its flight, and a guide between the thread casting and guiding device and the side delivery eye for directing the thread i thread passage constructed and arranged 'to cast the thread and partially or wholly unthread the shuttle on the occurrence of an overthrow as the shuttle is arrested at the end of its flight, and a guide in the thread passage between the guidin device and the side deliver 7 e e for 6) I casting and directing the whirling thread into the control of said device as the unthreaded shl-ittle is picked.
- An automatically threading loom shut.- tle having the wood ofthe shuttle cut away to form a threading block receiving chamber and ide' delivery eye, in combination with a threading block secured in said ch anrber thread casting and guiding device secured at one side of the threading block for casting the thread on the occurrence of a loop or overthrow to partially or wholly unthread the shuttle, and a guide in the thread passage at the opposite side thereof for directing the whirling thread into'control of said device as the partially or wholly unthreaded shuttle is again picked.
- An automatically threading loom shuttle having the wood of the shuttle cut away to form a threading block receiving chamber and side delivery eye, in combination with a threading block secured in said chamber and having a thread passage, athread casting and guiding device secured at one side of the threading block and having a thread casting portion which extends upwardly, laterally and frontwardly from a point adjacent the bobbin chamber for easting the thread from said device and partially or wholly unthreading the shuttle on the occurrence of an overthrow, and a guide in the thread passage at the opposite side thereof for directing the whirling thread into the control of said device as the partially or wholly unthreaded shuttle is again picked.
- An automatically threading loom shuttle having a longitudinally extending thread passage, a side delivery eye, a thread casting and guiding device in the thread passage having a thread casting portion extending upwardly, laterally, and frontwardly from the side of the thread passage opposite the and having-a thread passage, a
- An automatically threading loom shuttle having a longitudinally extending thread passage, a side delivery eye, a thread casting and guiding device in the thread passage having a thread casting portion extending upwardly, laterally, and frontwardly the thread passage opposite the side delivery eye for casting the thread of a reversely wound bobbin to partially or wholly unthread the shuttle on the occurrence of a loop or overthrow as the shuttle is arrested at the end of its flight.
- An automatically threading loom shuttle having a longitudinally extending thread passage, a side delivery eye, a thread casting and guiding device in the thread passage having a thread casting portion extend ing upwardly, laterally, and frontwardly from the left side of the thread passage for casting the thread of a left wound bobbin on the occurrence of a loop or overthrow to partially or wholly unthread the shuttle as the shuttle is arrested at the end of its flight, and a guide between the thread casting and guiding device and the side delivery eye to direct the whirling thread of the partially or wholly unthreaded shuttle into the control of said device as the shuttle is again picked.
- An automatically threading loom shuttle having a threading block provided with a longitudinally extending thread passage with an open top for ready entrance and exit of the thread, a side delivery eye, a thread casting and guiding device having a thread casting portion adjacent the bobbin chamber at the side thereof opposite the delivery eye for casting the thread of a re versely wound bobbin and partially or wholly unthreading the shuttle on the occurrence of a loop or overthrow when the shuttle is arrested at the end of its flight.
- An automatically threading loom shuttle having a threading block provided with a longitudinally extending thread'passage and a thread director projecting from one side thereof, and a thread casting and guiding device having a thread casting portion ex tending from the opposite side thereof for casting the thread of a left wound bobbin and partially or wholly .unthreading the shuttle on the occurrence of a loop or overthrow as the shuttle is arrested at the end of its flight.
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- Textile Engineering (AREA)
- Looms (AREA)
Description
May 19, 1925. 1,538,639 P. KAVANAGH AUTOMATICALLY THREADING LOOM SHUTTLE Filed Oct. 2, 924 I ln ml 3 3 15 I: WW a W1 mural W I f/V TORI QM mm ATTOkA EY Patented May 19, 1925.
UNITED stares PATENT-OFFICE.
PATRICK KAVANAGI-I, OF MILFORD, MASSACHUSETTS, ASSIGNOR .TD 'DRAPER COR- PORATION, OF HOPEDALE, jMAS'SAC-HUSETTS, A UORPOR-A'TION OiF MAINE.
AUTOMATICALLY-THREADING LOOM SHUTTLE.
Application filed. October TonZZ whom "it may concern: H
Be it known that I, PATRICK KA ANAGH,
and State of "Massachusetts, have "invented an Improvement in Automatically-Thread-- ingLoom Shuttles, of which the fOllOWlHg, description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.
This invention relates to automatically threading loom shuttles employed in looms wherein the weft or filling thread isautomatically replenished from time to time.
It is now the common practice to provide automatically threading loom shuttles with various forms of horns or overhangs tor guards which prevent the fre exit of the thread from the threading device when once the shuttle has been threaded, and in some cases the obstructing horns or overhangs have been associated with scroll eyes to facilitate shuttle threading and as an additional security against subsequent unthreading. v
During the operation of the 100m when the shuttle is arrested in the replenishing box, the weft or filling thread is liable to overthrow or balloon sult that in th now prevailing forms of loom shuttles, the loop or overthrow liable'to become caught on some part of the threading device and be broken .on-the subsequent pick. p
In the patent to Edward S. Stimpson, No. 1,483,492, dated February 12, 1924, is shown and described an automatically threading loom shuttle wherein on the .oc-' curence of a loop or overthrow, the shuttle will become partially or wholly unthreaded, and will again become threaded on subsequent picks of the shuttle. The present invention is a further development of the automatically threading shuttle shown and described in the Stimpson patent, and is more. particularly directed to means for facilitating the return of the weft or filling thread to the control of the threading device as the shuttle is picked after it has been unthreaded or partially unthreaded. When the shuttle is wholly or partially nnthreaded and is picked, the whirling action of the thread as it unwinds from the filling carrier or bobbin in the shuttle is in a United States, and a resi b condition is fully disclosed or loop, with the re isv '2, 1924. Ser al No. 741,129.
of the threadon the filling carrier or bob-- in. Usua'lly'the filling carriers or'bobbins .have the filling wound thereon in .a direction contra clockwise, viewing the bobbin or filling carrier from the tip end thereof, and when the filling is unwound during the flight of the shuttle, th unwinding thread takes a course clockwise of the filling carrier or bobbin at the tip end. This patent. In some cases, however, the filling is wound in the reverse direction upon the filling carrier or bobbin, that is, looking at the tip end of the filling carrier, the filling is wound ina clockwise direction, so that when the filling nnwindsas the shuttle @is picked, it will whirl in a contra-clockwise direction.
One of the objects ofthepresent invention, therefore, is to provide an automatically threading loom shuttle of the thread casting type, such as shown and described in th 'Stimpson patent, that it may be employed with a reversely or left-wound hobbin. Another object of the invention is to provide in a shuttle of the thread casting type, such as disclosed in the Stimpson patent, additional means cooperating with the whirling thread as it is unwound from the bobbin when the shuttle is picked, to insure that the whirling thread will pass into control of the thread casting and guid= ing device. This latter feature may be advantageously utilized in shuttles using either the right or left-wound filling carriers or bobbins.
The invention and various new combinations of parts will best be made clear from the following description and the accompanying drawings of one good term thereof.
In the drawings: 7
Fig. l is a perspective view of an auto matically threading shuttle of the thread casting type having the present invention associated therewith, and shown as employed in connection with a reversely or left-wound bobbin, part of the shuttle be ing broken away;
Fig. 2 is a perspective detached detail showing a threading block containing the present invention;
Fig. 3 is an enlarged longitudinal section through the threading block and thread direction reverse of the wind in the Stimpson for use in connection with the usual rightwound bobbin.
The shuttle 1 is provided with the usual bobbin chamber 2 in which is supported the usual filling carrier or bobbin 3. The means for detachably holding the filling carrier or bobbin in the shuttle, as by use of the bobbin holding jaws, is not herein shown because it forms no part of the present invention.
The shuttle 1 is provided with a threading block receiving chamber 4 formed in the front end of the shuttle, and a frontwardly extending recess 5. Communicating with the longitudinally extending thread passage. which is shown as formed in the threading block, the shuttle is provided with a side delivery eye 6.
The threading block 7 has the side walls 8 and 9 formed to fit the side walls of the threading block receiving chamber 4, and at the side of the threading block adjacent the side delivery eye 6 of the shuttle is the thread director 10, the tip end portion 11 of which is turned laterally with a tapering end constructed and arranged to shed any loop or thread that may be caught thereon, as more fully explained in the Stimpson patent hereinbefore referred to.
The threading block 7 has the longitudinally extending thread passage 12 which is substantially unobstructed by any overhang, guard or similar device which would interfere with the ready exit or entrance of the thread. i
As shown inv Fig. 1, the filling carrier or bobbin 3 has the filling 13 wound thereon in a clockwise direction looking towards the tip of the filling carrier or bobbin, and consequently as the weft or filling thread a is drawn when the shuttle is picked, the filling thread takes a course in a direction substantially as indicated by the arrow in Fig. 5. Mounted in the thread passage is the thread casting and guiding device 14 which, as shown, extends from the side of the thread passage opposite the side delivery eye 6 and thread director 11, with the result that when the filling thread a is withdrawn from the bobbin as the shuttle is picked, the course of the thread will correspond to the genfrom the filling carrier or bobbin eral curve of the thread casting and guid ing device 14.
The thread casting and guiding device 14 has an upwardly, laterally and frontwardly extending thread casting portion 15 which starts preferably at a point adjacent the bobbin chamber, the construction being such that on the formation of a loop or overthrow when the shuttle is arrested at the end of its flight, the weft or filling thread (L will engage the upwardly, laterally and frontwardly extending edge 15 and be thrown from the thread casting device upwardly and. it may be, entirely longitudinally extending thread passage.
As shown in the present instance of the invention, the thread casting and guiding device 14 has abase portion 16 which extends downwardly into the receiving recess 17 of the threading block, and its lower edge portion is preferably turned laterally, as at 18, to provide a firm and steadying hearing at the under side of the threading block. lVith the construction described, the thread casting and guiding device 14 as well as the threading block 7 may be advantageously and conveniently secured in the shuttle by the usual cross-bolt 19.
The thread casting and guiding device 14 is conveniently formed as a scroll, as shown, the frontwardly extending edge portion 20 of which extends frontwardly in the thread passage, substantially as shown and described in the Stimpson patent, hereinbefore mentioned, with the exception that the thread casting and guiding device when used with a left-wound or reversely wound bobbin is located in the thread passage, so i that the thread casting portion 15 thereof starts at a point at the left of the thread passage and extends upwardly, laterally and frontwardly therefrom, to thereby cast the thread of the reversely or left-wound bobbin when a loop or overthrow occurs as the shuttle is arrested at the end of its flight.
The threading block 7 has a bridge portion 21 over which the thread is drawn when the shuttle is picked, and frontwardly of the bridge portion 21 is a horn or deflector 22 below which the thread passes, as indicated in Fig. 1', when the shuttle is fully threaded and the thread is being delivered from the side delivery eye.
As hereinbefore noted, thread 0, as it is drawn from the filling carrier or bobbin during the flight of the shuttle, whirls in apath determined by the wind of the thread upon the filling carrier or bobbin, and an important feature of the present invention, therefore, consists in a guide located in the thread passage for directing the thread thread casting and guiding device as the wholly or partially unthreaded shuttle is picked.
out of the a the weft or filling lUO into the control of the -Where the filling is wound upon a filling carrier or bobbin witha reverse wind, as indicated in Figs. 1' and 5, the whirling action of the thread carries it in a path indicated by the arrow 7) and the radiating lines 0, Fig. The thread guide indicated at 23 extends from the side of the thread passage preferably in a downwardly inclined direction, ig. 5, towads that side from which the thread casting and guiding device assumes its initial position. In the case of a reversely or left-wound bobbin, as indicated in F ig, 5, as the thread whirls in the direction of thearrow Z; 23 and be by it directed into control of the thread casting and guiding device, finally assuming the position as indicated at a, Fig. 5. l
In case the thread casting and guiding device is employed with a bobbin having the usual or right-hand wind, the guide 23 is locatedas indicated in 6', that is, it ex tends downwardly in an inclined direction from the side of the thread passage towards the opposite side thereof to which the thread casting and guiding device is secured, so that in the whirling action of the thread from the usual wound bobbin. the guide 23 will direct the thread into control of the thread casting and guiding device.
When the thread casting and guiding de vice is employed in connection with a reversely or left-wound bobbin, as indicated in Fig. 1, the thread casting portion 15 starts from a point preferably adjacent the bobbin chamber in an upwardly, laterally and frontwardly extending direction from the left side of the thread passage, and the guide 28 extends from the opposite side of the thread passage in an inclined downwardly direction to direct the whirling thread into control of the thread casting and guiding device.
Where the thread casting and guiding device is employed in connection with a rightwound bobbin, as indicated in Fig. 6, it will be secured in the thread passage with its thread casting portion 15 extending upwardly, laterally and frontwardly from the right side of the thread passage and the guide 23 will extend from the opposite side of the thread passage in a downwardly inclined direction, as indicated in Fig. 6, the effect being that the guide 23 whether used with a right or left wound bobbin will direct the thread more accurately into control of the thread casting and guidlng device as the wholly or partially unthreaded shuttle is picked.
hat is claimed is:
1. An automatically threading loom shuttle having a thread passage extending longitudinally thereof, a side deliver eye communicating with the thread passage, a thread casting and guiding device in the it will strike the guide thread passage constructed and. arranged tocast the thread and partially or wholly unthread the shuttle on the occurrence of an overthrow as the shuttle is arrested at the end of its flight, and a guide between the thread casting and guiding device and the side delivery eye for directing the thread i thread passage constructed and arranged 'to cast the thread and partially or wholly unthread the shuttle on the occurrence of an overthrow as the shuttle is arrested at the end of its flight, and a guide in the thread passage between the guidin device and the side deliver 7 e e for 6) I casting and directing the whirling thread into the control of said device as the unthreaded shl-ittle is picked.
3; An automatically threading loom shut.- tle having the wood ofthe shuttle cut away to form a threading block receiving chamber and ide' delivery eye, in combination with a threading block secured in said ch anrber thread casting and guiding device secured at one side of the threading block for casting the thread on the occurrence of a loop or overthrow to partially or wholly unthread the shuttle, and a guide in the thread passage at the opposite side thereof for directing the whirling thread into'control of said device as the partially or wholly unthreaded shuttle is again picked.
4. An automatically threading loom shuttle having the wood of the shuttle cut away to form a threading block receiving chamber and side delivery eye, in combination with a threading block secured in said chamber and having a thread passage, athread casting and guiding device secured at one side of the threading block and having a thread casting portion which extends upwardly, laterally and frontwardly from a point adjacent the bobbin chamber for easting the thread from said device and partially or wholly unthreading the shuttle on the occurrence of an overthrow, and a guide in the thread passage at the opposite side thereof for directing the whirling thread into the control of said device as the partially or wholly unthreaded shuttle is again picked.
5. An automatically threading loom shuttle having a longitudinally extending thread passage, a side delivery eye, a thread casting and guiding device in the thread passage having a thread casting portion extending upwardly, laterally, and frontwardly from the side of the thread passage opposite the and having-a thread passage, a
side delivery eye for casting the thread of a bobbin on the occurrence of a loop or overthrow to partially or wholly unthread the shuttle as the shuttle is arrested at the end of its flight and a guide in the thread passage at the side opposite the thread casting and guiding device for directing the whirlfrom the side of ing thread into the control of said device.
6. An automatically threading loom shuttle having a longitudinally extending thread passage, a side delivery eye, a thread casting and guiding device in the thread passage having a thread casting portion extending upwardly, laterally, and frontwardly the thread passage opposite the side delivery eye for casting the thread of a reversely wound bobbin to partially or wholly unthread the shuttle on the occurrence of a loop or overthrow as the shuttle is arrested at the end of its flight.
7. An automatically threading loom shuttle having a longitudinally extending thread passage, a side delivery eye, a thread casting and guiding device in the thread passage having a thread casting portion extend ing upwardly, laterally, and frontwardly from the left side of the thread passage for casting the thread of a left wound bobbin on the occurrence of a loop or overthrow to partially or wholly unthread the shuttle as the shuttle is arrested at the end of its flight, and a guide between the thread casting and guiding device and the side delivery eye to direct the whirling thread of the partially or wholly unthreaded shuttle into the control of said device as the shuttle is again picked.
8. An automatically threading loom shuttle having a threading block provided with a longitudinally extending thread passage with an open top for ready entrance and exit of the thread, a side delivery eye, a thread casting and guiding device having a thread casting portion adjacent the bobbin chamber at the side thereof opposite the delivery eye for casting the thread of a re versely wound bobbin and partially or wholly unthreading the shuttle on the occurrence of a loop or overthrow when the shuttle is arrested at the end of its flight.
9. An automatically threading loom shuttle having a threading block provided with a longitudinally extending thread'passage and a thread director projecting from one side thereof, and a thread casting and guiding device having a thread casting portion ex tending from the opposite side thereof for casting the thread of a left wound bobbin and partially or wholly .unthreading the shuttle on the occurrence of a loop or overthrow as the shuttle is arrested at the end of its flight.
In testimony whereof, I have signed my name to this specification.
PATRlCK KAVANAGH.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US741129A US1538639A (en) | 1924-10-02 | 1924-10-02 | Automatically-threading loom shuttle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US741129A US1538639A (en) | 1924-10-02 | 1924-10-02 | Automatically-threading loom shuttle |
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US1538639A true US1538639A (en) | 1925-05-19 |
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US741129A Expired - Lifetime US1538639A (en) | 1924-10-02 | 1924-10-02 | Automatically-threading loom shuttle |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2470064A (en) * | 1948-12-01 | 1949-05-10 | Wood Seth | Yarn guiding block for weaving shuttles |
-
1924
- 1924-10-02 US US741129A patent/US1538639A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2470064A (en) * | 1948-12-01 | 1949-05-10 | Wood Seth | Yarn guiding block for weaving shuttles |
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