US3320980A - Weft laying mechanism for needle looms - Google Patents
Weft laying mechanism for needle looms Download PDFInfo
- Publication number
- US3320980A US3320980A US461685A US46168565A US3320980A US 3320980 A US3320980 A US 3320980A US 461685 A US461685 A US 461685A US 46168565 A US46168565 A US 46168565A US 3320980 A US3320980 A US 3320980A
- Authority
- US
- United States
- Prior art keywords
- weft
- actuator
- needle
- primary
- needle member
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D35/00—Smallware looms, i.e. looms for weaving ribbons or other narrow fabrics
Definitions
- FIGURE 2 is a vertical section of line 2-2, FIGURE 1 and looking in the direction of the arrows,
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Description
WEFT LAYING MECHANISM FOR NEEDLE LOOMS Filed June 7, 1965 INVENTOR ROGER W. GUSTAVSON ATTORNEY United States Patent '0 3,320,980 WEFT LAYING MECHANISM FOR NEEDLE LOOMS Roger W. Gustavson, Auburn, Mass, assignor to Crompton & Knowles Corporation, Worcester, Mass., at corporation of Massachusetts Filed June 7, 1965, Ser. No. 461,685 Claims. (Cl. 139--124) This invention relates to improvements in mechanism for operating weft inserting needles more particularly of narrow ware looms.
In high speed weft needle looms of the type shown in the Turner Patent No. 2,625,959 and more particularly Patent No. 2,902,057, very high speeds have been attained because of the smooth continuous motion of the weft inserting member which moves the weft needle through the shed in a tear drop path. Looms of this type are generally limited to weaving cloth in the range of /2" to 1 /2", any increase in size of weaving components results in a reduction of weaving speed. The object of the present invention is to provide a needle loom of the type described with weft needle operating mechanisms including a primary and secondary actuator, the combination of which will enable the loom to weave cloth having approximately twice the width as previously without increasing the size of the weft needle members and without an appreciable reduction in speed due to the weft inserting mechanism.
Other objects and 'the details of that which is novel will be clear from the following descriptions and claims taken with the accompanying drawings in which is illustrated an example of a device embodying the present invention.
-In the drawings:
FIGURE 1 is a plan view illustrating the invention,
FIGURE 2 is a vertical section of line 2-2, FIGURE 1 and looking in the direction of the arrows,
FIGURE 3 is a vertical section on line 3-3, FIGURE 1 and FIGURE 4 is a diagrammatic View illustrating the motions of the needle member actuator and the path of the weft inserting needle.
Referring particularly to FIGURE 1, there are shown harness frames 4 reciprocable vertically in guides 6 and 7 by mechanism not shown but similar to that employed in Patent No. 2,625,959. The harness frames actuate the warp 8 to form two separate sheds through which the wefts 10 are inserted to form fabrics 12. The loom operates with the usual beat up means 14 and selvage form ing mechanism 16.
Supported on a table 18 are right and left hand inserting means indicated generally at 20 and 22 which operate to lay weft 10 into the warp shed much in the same manner as the weft inserting means shown in the above mentioned Patent No. 2,902,057. Since right and left hand weft inserting means 20 and 22 are exactly alike and operate in the same manner, it is deemed necessary to describe only the right hand weft inserting means 20.
Weft inserting means 20 has a weft needle member 24 having a weft eye 26 at the rear end and through which the weft 10 is threaded. Weft eye of member 24 is moved through the shed in a tear shaped path 27, see FIGURE 2, by a primary actuator 28 and a secondary actuator 30. Primary actuator 28 has a driving link 32 which has one end pivotally connected at 34 to a part 36 of member 24 spaced from said weft eye. Link 32 has its other end fixed to a first continuously rotating shaft 38 whose axis is parallel to and spaced from pivot 34 so that link 32 and a part of member 24 are driven in a circle designated by reference numeral 40 in FIG- URE 4.
From the foregoing it is evident that the invention provides a substantial increase in the width of cloth which can be woven on a needle loom of the type described without any substantial increase in size of weaving components or reduction in speed by using two actuators instead of one which gives the needle member a compound motion to move the weft eye in the manner described. As will be evident from the foreging description the invention is not limited to the particular details of construction of the example illustrated, and it is contemplated that various other modifications of the invention will occur to those skilled in the art. It is therefore the intention that the appended claims shall cover such modifications as do not depart from the true spirit and scope of the in vention.
Having now particularly described and ascertained the nature of the invention and in what manner the same is to be performed, what is claimed is:
1. In a needle loom having means for forming a warp shed, weft inserting means comprising:
(a) weft needle member having a weft eye at the rear end thereof;
(b) a primary continuously rotating actuator pivotally connected to said needle member at a point spaced from the center of rotation of said primary actuator and said weft eye, and being effective to drive said point in a circle;
(c) a secondary continuously rotating actuator turning once for every rotation of said primary actuator; and
(d) a crank arm pivotally connected at one of its ends to said secondary actuator at a point spaced from the center of rotation of said secondary actuator and being pivotally connected at its other end to said needle member at .a greater distance from said weft eye than said primary actuator, whereby said primary and secondary actuators cooperate to move said weft through one complete weft inserting cycle for each rotation of said actuators.
2. In a needle :loom having means for forming a warp shed, weft inserting means comprising:
(a) a needle member having an end portion for carrying a weft yarn;
(b) a primary rotating eccentric actuator supporting a part of said needle member;
(c) a secondary rotating eccentric actuator which makes one revolution for each revolution of the primary actuator;
(d) linkage means connecting said secondary actuator to an opposite end portion of said needle member at a point spaced from said primary actuator whereby rotation of said actuators cooperate to give said needle member a compound motion to insert a loop of weft in the warp shed for each revolution of said actuators.
3. In a needle loom having means for forming a warp shed, weft inserting means comprising:
(a) a needle member for carrying a weft yarn;
(b) a primary rotating eccentric actuator supporting a part of said needle member, rotating in one direction;
() a secondary rotating eccentric actuator which makes one revolution in the opposite direction for each revolution of the primary actuator; and
(d), linkage means connecting said secondary actuator to a portion of said needle member at a point spaced from said primary actuator whereby rotation of said actuators cooperate to give said needle member a compound motion to insert a loop of weft in the warp shed for each revolution of said actuators. 4. In a needle loom having means for forming a warp 5 shed, weft inserting means comprising:
(a) a needle member for carrying a Weft yarn;
(b) a primary rotating eccentric actuator connected to a part of said needle member;
(c) a secondary rotating eccentric actuator which makes one revolution for each revolution of the primary actuator; and
(d) linkage means connecting said secondary actuator to a portion of said needle member at a point spaced from said primary actuator, the connection between said linkage means and said secondary actuator being about 180 out of phase with the connection between said needle member and said primary actuator when said needle member is in its outermost position, whereby rotation of said actuators cooperate to give said needle member a compound motion to insert a loop of weft in the Warp shed for each revolution of said actuators,
5. Ina needle loom as set forth in claim 4 wherein said secondary actuator rotates in a direction opposite to the 25 direction of rotation of the primary actuator.
Claims (1)
1. IN A NEEDLE LOOM HAVING MEANS FOR FORMING A WARP SHED, WEFT INSERTING MEANS COMPRISING: (A) WEFT NEEDLE MEMBER HAVING A WEFT EYE AT THE REAR END THEREOF; (B) A PRIMARY CONTINUOUSLY ROTATING ACTUATOR PIVOTALLY CONNECTED TO SAID NEEDLE MEMBER AT A POINT SPACED FROM THE CENTER OF ROTATION OF SAID PRIMARY ACTUATOR AND SAID WEFT EYE, AND BEING EFFECTIVE TO DRIVE SAID POINT IN A CIRCLE; (C) A SECONDARY CONTINUOUSLY ROTATING ACTUATOR TURNING ONCE FOR EVERY ROTATION OF SAID PRIMARY ACTUATOR; AND
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US461685A US3320980A (en) | 1965-06-07 | 1965-06-07 | Weft laying mechanism for needle looms |
GB24121/66A GB1089108A (en) | 1965-06-07 | 1966-05-31 | Weft laying mechanism for needle looms |
NL6607768A NL6607768A (en) | 1965-06-07 | 1966-06-03 | |
DE19661535338 DE1535338A1 (en) | 1965-06-07 | 1966-06-03 | Contactorless loom |
BE682020D BE682020A (en) | 1965-06-07 | 1966-06-03 | |
CH823466A CH450314A (en) | 1965-06-07 | 1966-06-06 | Weft Pass Needle Loom |
ES0328153A ES328153A1 (en) | 1965-06-07 | 1966-06-07 | Improvements in the sliding laterals. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US461685A US3320980A (en) | 1965-06-07 | 1965-06-07 | Weft laying mechanism for needle looms |
Publications (1)
Publication Number | Publication Date |
---|---|
US3320980A true US3320980A (en) | 1967-05-23 |
Family
ID=23833539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US461685A Expired - Lifetime US3320980A (en) | 1965-06-07 | 1965-06-07 | Weft laying mechanism for needle looms |
Country Status (7)
Country | Link |
---|---|
US (1) | US3320980A (en) |
BE (1) | BE682020A (en) |
CH (1) | CH450314A (en) |
DE (1) | DE1535338A1 (en) |
ES (1) | ES328153A1 (en) |
GB (1) | GB1089108A (en) |
NL (1) | NL6607768A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3495632A (en) * | 1967-11-15 | 1970-02-17 | Bonas Bros Weavematic Looms | Needle looms |
US3519029A (en) * | 1967-09-25 | 1970-07-07 | Brevitex Ets | Needle loom |
US3557844A (en) * | 1968-09-30 | 1971-01-26 | John D Riordan | Apparatus for producing a fabric with a longitudinal seam |
US3601160A (en) * | 1969-09-11 | 1971-08-24 | Crompton & Knowles Corp | Magnetic latch holding means for a selvage knitting needle in a narrow ware loom |
US3752195A (en) * | 1970-03-23 | 1973-08-14 | Riordan J | Loom |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2013230A (en) * | 1933-01-16 | 1935-09-03 | Backstay Welt Company | Method and apparatus for making textile product |
US2625959A (en) * | 1950-05-05 | 1953-01-20 | Crompton & Knowles Loom Works | Needle loom |
-
1965
- 1965-06-07 US US461685A patent/US3320980A/en not_active Expired - Lifetime
-
1966
- 1966-05-31 GB GB24121/66A patent/GB1089108A/en not_active Expired
- 1966-06-03 BE BE682020D patent/BE682020A/xx unknown
- 1966-06-03 NL NL6607768A patent/NL6607768A/xx unknown
- 1966-06-03 DE DE19661535338 patent/DE1535338A1/en active Pending
- 1966-06-06 CH CH823466A patent/CH450314A/en unknown
- 1966-06-07 ES ES0328153A patent/ES328153A1/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2013230A (en) * | 1933-01-16 | 1935-09-03 | Backstay Welt Company | Method and apparatus for making textile product |
US2625959A (en) * | 1950-05-05 | 1953-01-20 | Crompton & Knowles Loom Works | Needle loom |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3519029A (en) * | 1967-09-25 | 1970-07-07 | Brevitex Ets | Needle loom |
US3495632A (en) * | 1967-11-15 | 1970-02-17 | Bonas Bros Weavematic Looms | Needle looms |
US3557844A (en) * | 1968-09-30 | 1971-01-26 | John D Riordan | Apparatus for producing a fabric with a longitudinal seam |
US3601160A (en) * | 1969-09-11 | 1971-08-24 | Crompton & Knowles Corp | Magnetic latch holding means for a selvage knitting needle in a narrow ware loom |
US3752195A (en) * | 1970-03-23 | 1973-08-14 | Riordan J | Loom |
Also Published As
Publication number | Publication date |
---|---|
CH450314A (en) | 1968-01-15 |
NL6607768A (en) | 1966-12-08 |
GB1089108A (en) | 1967-11-01 |
BE682020A (en) | 1966-11-14 |
ES328153A1 (en) | 1967-04-01 |
DE1535338A1 (en) | 1970-07-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LEESONA CORPORATION; 333 STRAWBERRY FIELD RD., WAR Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE DATE;ASSIGNOR:CROMPTON & KNOWLES CORPORATION;REEL/FRAME:004026/0061 Effective date: 19820324 |