US3441061A - Weft pull and release device for weaving looms having no shuttles - Google Patents
Weft pull and release device for weaving looms having no shuttles Download PDFInfo
- Publication number
- US3441061A US3441061A US644564A US3441061DA US3441061A US 3441061 A US3441061 A US 3441061A US 644564 A US644564 A US 644564A US 3441061D A US3441061D A US 3441061DA US 3441061 A US3441061 A US 3441061A
- Authority
- US
- United States
- Prior art keywords
- weft
- shuttles
- blade
- release device
- pull
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009941 weaving Methods 0.000 title description 3
- 238000004329 water eliminated fourier transform Methods 0.000 description 2
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J5/00—Shuttles
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J2700/00—Auxiliary apparatus associated with looms; Weavening combined with other operations; Shuttles
- D03J2700/10—Shuttles
- D03J2700/14—Gripper shuttles
Definitions
- a weft pull and release device for shuttleless looms comprising ad-justably spaced upper and lower stationary guide elements at one side of the loom and a pair of weft gripping and releasing blades, one rigid and the other resilient, reciprocable through the restricted space between the guide elements to grip, pull and release the weft.
- the invention relates to a novel weft pulling and releasing device for shuttleless looms in which a reciprocating weft gripper and releaser is actuated from one side of the loom to move into and out of the shed of warp threads to pull the weft thread into the shed and release it during each reciprocation of the gripper.
- FIGURE 1 is a side view of the reciprocating gripper with the guide elements shown in cross section;
- FIGURE 2 is a plan view of the gripper
- FIGURE 3 is a transverse section through the gripper during its passage through the guide elements
- FIGURE 4 is a fragmentary side view of the gripper during its passage through the guide elements to release the weft.
- the gripper comprises a body 1 to one side of which an elongated plate 1' is secured to serve as a needle for entering the shed of warp threads and clearing the passageway for the gripper blades comprising a lower rigid blade 2 and an upper resilient blade 3 whose rear ends are superimposed and secured by screws 13 to the body 1.
- the front end of the rigid blade 2 is provided with a terminal hook 5 which is normally engaged on its lower side at 4 by the free end of the resilient blade to grip the weft thread and pull it into the shed of warp threads.
- the lower blade 2 is preferably L-shaped throughout the greater portion of its length to provide it with a vertical flange 2 along one edge for rigidity.
- the upper blade 3 can be tapered to a reduced thickness near its rear end in the region 8, and immediately in front of this tapered portion it is bent upwardly to provide a hump to be engaged by a stationary member during reciprocation of the device to disengage the free end of blade 3 from the lower side of the hook to release the weft thread at the outer end of the reciprocatory movement.
- a restricted guideway is provided between stationary members 9 and 10 at the side of the loom opposite the side where the spool of weft thread is located.
- the distance between the members 9 and 10 is accurately adjustable by means of an adjusting screw 12 and clamping screws 12 so that at the outer end of the reciprocatory movement the upper guide member 9 will be encountered by the hump 7 with sufficient force to disengage the free end of the resilient member 3 from the hook 5 sufficiently to release the weft thread which has been clamped between the ends of the two blades, the operation being similar to the operation of the device shown in US. Patent 3,312,252.
- a weft inserting device for a shuttleless loom comprising an elongated body (1) adapted to be reciprocated longitudinally into and out of a shed of warp threads, a rigid lower blade (2) having its rear end secured to the body (1) in alignment therewith and equipped with a rearwardly and upwardly projecting hook (5) at its front end adapted to catch a weft thread, a resilient upper blade (3) having its rear end secured on top of the rearend of the lower blade and with its front end normally bearing against the lower side (4) of the hook but adapted to retain a weft thread in position between itself and the hook, and a pair of stationary guide elements (9, 10) positioned respectively above and below the path of movement of the two blades, the lower guide element (10) remaining normally in engagement with the lower surface of the rigid blade (2) while the upper guide element is in position to engage the upper surface of the resilient blade (3) to disengage the latter from the hook so as to release the weft thread near the end of the reciprocatory movement.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Description
Apnl 29, 1969 M. PERACCA E AL 3,441,061
WEFT PULL AND RELEASE DEVICE FOR WEAVING LOOMS HAVING NO SHUTTLES Filed June 8, 1967 m i\. N .4
m R, i \J N r U 4 2 W 0 LL 2 I a LL 9 :w
T 'vm 4 l INVENTQRS Manh'o PERACCA Guerrino CICUTTA W v 20% ATTORNEYS United States Patent Office 3,441,061 Patented Apr. 29, 1969 3,441,061 WEFT PULL AND RELEASE DEVICE FOR WEAV- ING LOOMS HAVING N SHUTTLES Manlio Peracca, Muggia-Trieste, and Guerrino Cicutta, Gorizia, Italy, assignors to Nuova San Giorgio S.p.A. Filed June 8, 1967, Ser. No. 644,564 Claims priority, application Italy, June 10, 1966, 18,876/ 66 Int. Cl. D03d 47/16 US. Cl. 139-122 2 Claims ABSTRACT OF THE DISCLOSURE A weft pull and release device for shuttleless looms comprising ad-justably spaced upper and lower stationary guide elements at one side of the loom and a pair of weft gripping and releasing blades, one rigid and the other resilient, reciprocable through the restricted space between the guide elements to grip, pull and release the weft.
The invention relates to a novel weft pulling and releasing device for shuttleless looms in which a reciprocating weft gripper and releaser is actuated from one side of the loom to move into and out of the shed of warp threads to pull the weft thread into the shed and release it during each reciprocation of the gripper. The invention will now be described more in detail with reference to the drawing wherein:
FIGURE 1 is a side view of the reciprocating gripper with the guide elements shown in cross section;
FIGURE 2 is a plan view of the gripper;
FIGURE 3 is a transverse section through the gripper during its passage through the guide elements; and
FIGURE 4 is a fragmentary side view of the gripper during its passage through the guide elements to release the weft.
The gripper comprises a body 1 to one side of which an elongated plate 1' is secured to serve as a needle for entering the shed of warp threads and clearing the passageway for the gripper blades comprising a lower rigid blade 2 and an upper resilient blade 3 whose rear ends are superimposed and secured by screws 13 to the body 1. The front end of the rigid blade 2 is provided with a terminal hook 5 which is normally engaged on its lower side at 4 by the free end of the resilient blade to grip the weft thread and pull it into the shed of warp threads. The lower blade 2 is preferably L-shaped throughout the greater portion of its length to provide it with a vertical flange 2 along one edge for rigidity.
To render the upper blade 3 slightly resilient it can be tapered to a reduced thickness near its rear end in the region 8, and immediately in front of this tapered portion it is bent upwardly to provide a hump to be engaged by a stationary member during reciprocation of the device to disengage the free end of blade 3 from the lower side of the hook to release the weft thread at the outer end of the reciprocatory movement.
To exert the necessary pressure on the upper blade for this purpose, a restricted guideway is provided between stationary members 9 and 10 at the side of the loom opposite the side where the spool of weft thread is located. The distance between the members 9 and 10 is accurately adjustable by means of an adjusting screw 12 and clamping screws 12 so that at the outer end of the reciprocatory movement the upper guide member 9 will be encountered by the hump 7 with sufficient force to disengage the free end of the resilient member 3 from the hook 5 sufficiently to release the weft thread which has been clamped between the ends of the two blades, the operation being similar to the operation of the device shown in US. Patent 3,312,252.
What is claimed is:
1. A weft inserting device for a shuttleless loom, said device comprising an elongated body (1) adapted to be reciprocated longitudinally into and out of a shed of warp threads, a rigid lower blade (2) having its rear end secured to the body (1) in alignment therewith and equipped with a rearwardly and upwardly projecting hook (5) at its front end adapted to catch a weft thread, a resilient upper blade (3) having its rear end secured on top of the rearend of the lower blade and with its front end normally bearing against the lower side (4) of the hook but adapted to retain a weft thread in position between itself and the hook, and a pair of stationary guide elements (9, 10) positioned respectively above and below the path of movement of the two blades, the lower guide element (10) remaining normally in engagement with the lower surface of the rigid blade (2) while the upper guide element is in position to engage the upper surface of the resilient blade (3) to disengage the latter from the hook so as to release the weft thread near the end of the reciprocatory movement.
2. The device of claim 1 in which the resilient blade (3) is rigid throughout the greater portion of its length but tapers at (7) into an upwardly humped flexible portion (8) in position to engage the guide element (9) near the end of the reciprocation.
References Cited UNITED STATES PATENTS 2,960,118 11/1960 Ancet et a1.
3,312,252 4/1967 Dewas.
FOREIGN PATENTS 1,391,346 1/1965 France.
HENRY S. JAUDON, Primary Examiner.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1887666 | 1966-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3441061A true US3441061A (en) | 1969-04-29 |
Family
ID=11153617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US644564A Expired - Lifetime US3441061A (en) | 1966-06-10 | 1967-06-08 | Weft pull and release device for weaving looms having no shuttles |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3441061A (en) |
| BE (1) | BE699736A (en) |
| DE (1) | DE1967192U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4062382A (en) * | 1975-09-24 | 1977-12-13 | Ruti Machinery Works Ltd. | Extending carrier for looms with removal of the filling yarn from stationary bobbins |
| US4076052A (en) * | 1975-07-04 | 1978-02-28 | Sulzer Brothers Limited | System for transferring a yarn from one part of a textile machine to another part |
| DE3812966A1 (en) * | 1987-10-02 | 1989-04-20 | Textilma Ag | GRIPPER WEAVING MACHINE |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2960118A (en) * | 1955-08-29 | 1960-11-15 | Ancet Victor Marie Joseph | Shuttleless weaving looms |
| FR1391346A (en) * | 1964-04-20 | 1965-03-05 | Fonderie Officine Di Gorizia S | Weft pulling needle in shuttle-less looms |
| US3312252A (en) * | 1964-03-12 | 1967-04-04 | Dewas Raymond | Weft-inserting devices for continuousfeed looms |
-
1967
- 1967-06-08 US US644564A patent/US3441061A/en not_active Expired - Lifetime
- 1967-06-08 DE DEN20187U patent/DE1967192U/en not_active Expired
- 1967-06-09 BE BE699736D patent/BE699736A/xx unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2960118A (en) * | 1955-08-29 | 1960-11-15 | Ancet Victor Marie Joseph | Shuttleless weaving looms |
| US3312252A (en) * | 1964-03-12 | 1967-04-04 | Dewas Raymond | Weft-inserting devices for continuousfeed looms |
| FR1391346A (en) * | 1964-04-20 | 1965-03-05 | Fonderie Officine Di Gorizia S | Weft pulling needle in shuttle-less looms |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4076052A (en) * | 1975-07-04 | 1978-02-28 | Sulzer Brothers Limited | System for transferring a yarn from one part of a textile machine to another part |
| US4062382A (en) * | 1975-09-24 | 1977-12-13 | Ruti Machinery Works Ltd. | Extending carrier for looms with removal of the filling yarn from stationary bobbins |
| DE3812966A1 (en) * | 1987-10-02 | 1989-04-20 | Textilma Ag | GRIPPER WEAVING MACHINE |
| US4949762A (en) * | 1987-10-02 | 1990-08-21 | Textilma Ag | Weft gripper for shuttleless loom |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1967192U (en) | 1967-08-24 |
| BE699736A (en) | 1967-11-16 |
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