US3877492A - Terry motion for looms - Google Patents

Terry motion for looms Download PDF

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Publication number
US3877492A
US3877492A US408702A US40870273A US3877492A US 3877492 A US3877492 A US 3877492A US 408702 A US408702 A US 408702A US 40870273 A US40870273 A US 40870273A US 3877492 A US3877492 A US 3877492A
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US
United States
Prior art keywords
lay
beat
drive assembly
rotation
lever
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
Application number
US408702A
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English (en)
Inventor
Howard I Nelson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crompton and Knowles Corp
Original Assignee
Crompton and Knowles Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Crompton and Knowles Corp filed Critical Crompton and Knowles Corp
Priority to US408702A priority Critical patent/US3877492A/en
Priority to CA209,011A priority patent/CA1006070A/en
Priority to DE2446225A priority patent/DE2446225C2/de
Priority to IT53345/74A priority patent/IT1021686B/it
Priority to BE149288A priority patent/BE820787A/xx
Priority to FR7434536A priority patent/FR2248351B1/fr
Priority to BR8593/74A priority patent/BR7408593D0/pt
Priority to JP11873974A priority patent/JPS5732140B2/ja
Priority to GB45165/74A priority patent/GB1488869A/en
Priority to GB10037/77A priority patent/GB1488870A/en
Priority to CH390977A priority patent/CH613480A5/xx
Priority to CH1417974A priority patent/CH592757A5/xx
Priority to CS747265A priority patent/CS204991B2/cs
Application granted granted Critical
Publication of US3877492A publication Critical patent/US3877492A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/22—Terry looms
    • D03D39/226—Sley control
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D27/00—Woven pile fabrics
    • D03D27/02—Woven pile fabrics wherein the pile is formed by warp or weft
    • D03D27/06—Warp pile fabrics
    • D03D27/08—Terry fabrics

Definitions

  • ABSTRACT Mechanism for reciprocating the lay in cycles of partial beat-ups followed by a full beat-up comprising a movable lay drive assembly which reciprocates the lay and means for altering the position of the assembly so that it will be in a first position for a full beat-up and in a second position for a partial beat-up.
  • the present invention relates generally to a lay drive for terry looms including terry looms in which weft is inserted from an outside filling supply source.
  • Terry fabric is woven in cycles of three or more weft insertions or picks. there being the usual. wherein the lay is driven to a point just short of the fell of the fabric for two picks and then to the fell for one pick.
  • the first two picks are called partial beat-ups and the third is referred to as a full beat-up which forms the terry pile loops from the length of terry warp yarn which extends between the two beat-up positions.
  • the object of the invention is accomplished by providing a movable lay drive assembly which reciprocates the lay the same amount for every pick. Actuating means are provided for moving the entire lay drive assembly to a first or forward position to provide a full beat-up and a second or rearward position to provide a partial beatup.
  • the present terry lay drive may be used in looms of any type which utilizes a pivotally mounted reciprocating lay.
  • additional mechanism is required.
  • weft is transferred by a weft guide or presenter to a weft inserter for each pick.
  • the position of the guide-with respect to the weft inserter is very critical. During partial beat-up, the weft inserter does not come as far forward as it does during full beatups so that weft will not be transferred from the presenter or guide to the inserter.
  • FIG. 1 is a front elevation of the preferred embodiment of the invention as applied to a terry loom of the outside weft supply type with portions broken away:
  • FIG. 2 is a vertical section on line 22 of FIG. I. looking in the direction of the arrows and showing the beat up means. with portions broken away:
  • FIG. 3 is a vertical section on line 3-3 of FIG. 2, looking in the direction of the arrows and showing details of the lay drive assembly;
  • FIG. 4 is a vertical section on line 44 of FIG. I. looking in the direction of the arrows and showing the actuating means when the lay drive assembly is in the full beat-up position;
  • FIG. 5 is a view similar to FIG. 4, showing the actuating means when the lay drive assembly is in the partial beat-up position;
  • FIG. 6 is a vertical section on line 66 of FIG. 1. looking in the direction of the arrows and showing the mechanism for positioning the weft guide;
  • FIG. 7 is a view looking in the direction of arrow 7 of FIG. 6;
  • FIG. 8 is a diagramatic perspective of mechanism for disconnecting the actuating means to produce flat cloth
  • FIG. 9 is a diagrammatic view of a first modification:
  • FIG. 10 is a diagrammatic view of a second modification.
  • FIG. I there is illustrated a terry loom generally indicated by the reference numeral 12.
  • This loom is of the type wherein weft is inserted from outside supply packages, indicated at P. by a weft inserter.
  • the particular loom which is illustrated utilizes a projectile for inserting the weft and which is propelled through the shed alternately from both sides by mechanism disclosed in US. Pat. Nos. 3,315,709, dated Apr. 25. 1967 to Svaty and 3,330,305, dated July 11, 1967 to Svaty. et al.
  • This type of loom is shown only as an example. as the invention may be applied to any type of loom which employs a pivoted reciprocating lay.
  • Loom 12 includes a frame 14, weft inserting mechanism generally indicated at 16, a dobby or pattern control mechanism 18, heddles 20 and connecting means 22 from the dobby 18 to the heddles 20.
  • the loom also includes a lay 24 which is pivotally mounted on elongated tubular supports 26 mounted to the frame 14.
  • a drive shaft 28 extends through the supports 26 and across the loom. This drive shaft is rotated constantly by conventional loom drive mechanism. not shown. and makes one rotation for every two weft insertions or picks.
  • a lay drive assembly Located on shaft 28 is a lay drive assembly generally indicated at 30.
  • This assembly includes a housing 32 pivotally mounted on shaft 28 and a gear 34 rotatably mounted to housing 32.
  • One end of a crank connector 36 is pivotally connected at 38 to gear 34 at a point spaced from its center of rotation.
  • the opposite end of connector 36 is pivotally connected at 42 to an intermediate lever 40 which is fixed to the lay.
  • Gear 34 therefore. functions as a crank and reciprocates lever 40 and lay 24 once for each rotation of the gear.
  • a gear 43 is fixed to drive shaft 28 in driving engagement with gear 34 and makes one rotation for each two rotations of gear 34. Since shaft 28 makes one rotation for every two picks. gear 34 will make one rotation for each weft insertion and the lay will be reciprocated once for each pick. Housing and the lay will be reciprocated once for each pick. Housing 32 therefore functions as a lever pivoted about shaft 28 for supporting gear 34 for rotation about gear 43.
  • the actuating means for the lay drive assembly is generally indicated by the reference numeral 44 and comprises a second drive shaft 46 which makes one rotation for every three picks or three reciprocations of the lay.
  • First and second discs 47 and 49, respectively, which form part of first and second eccentrics 48 and 50, respectively. are fixed to shaft 46.
  • a .bell crank lever 52 is pivotally connected by an intermediate pivot 53 to the inner two prongs 54 of a four-pronged lever 56.
  • the outer two prongs 58, of lever 56 each have a slot 60.
  • Lever 56 is pivoted at 62 to the frame 14.
  • a pair of links 64 are pivotally connected at their lower ends by adjustable pivots 65 within slots 60 for adjustment to any point along the slots.
  • links 64 are pivotally connected at 66 to a pair of intermediate levers 68 which are, in turn, pivotally connected at 70 to the frame 14.
  • the lower ends of a pair of second links 72 are also pivotally connected at 66 to intermediate levers 68.
  • the opposite ends of links 72 are pivotally connected at points 74 to opposite sides of housing 32.
  • First and second arms 76 and 78, respectively. form part of eccentrics 48 and 50, respectively, and are pivotally connected at 80 and 82, respectively, to opposite ends of bell crank lever 52.
  • Eccentrics 48 and 50 are effective to move the intermediate pivot point 53 of bell crank lever 52 and rock lever 56 which. through links 64 and 72 and lever 68, causes housing 32 and the entire assembly 30 to rock around shaft 28. Since gear 43 is also centered on shaft 28, gear 34 will partially revolve around gear 28. Since lay 24 is operatively connected to the housing 32, it will also be rocked around shaft 28. By shifting the position of lay drive assembly 30, the entire reciprocating path of the lay will be likewise shifted, as will the beat-up position of the lay. The eccentrics 48 and 50 are timed so that the lay drive assembly 30 will be in a first position for one reciprocation of the lay to produce a full beatup and in a second position for two reciprocations of the lay to produce partial beat-ups. FIG.
  • FIG. 4 shows the position of actuating means 44 when the lay drive assembly 30 is in its first position at the time of full beatup.
  • FIG. shows the position of actuating means 44 when the lay drive assembly is in its second position at the time of partial beat-up.
  • the timing and positioning of the eccentrics 48 and 50 are such that bell crank lever 52 is rocked around intermediate pivot 53 without appreciably moving the pivot for at least lof rotation of the eccentrics. This dwell occurs when the assembly is in its second position and extends from the first partial beat-up to the second.
  • cranks could be used instead of eccentrics; or any other drive means which will drive a portion of arms 76 and 78 in a circle.
  • FIGS. 6 and 7 there is a weft guide or presenter 34 and means. generally indicated at 86, for positioning the weft guide.
  • This mechanism forms part of the invention when the invention is applied to an outside weft supply loom of the type wherein weft is supplied to a weft inserter by a weft guide or presenter at the beginning of each weft insertion.
  • An example of such a loom is illustrated in US. Pat. 3,335,761 dated Aug. 15, 1967 to Bartosek, et al.
  • guide 84 is mounted to a block 88 which is slidably mounted within a casing 90 for movement toward and away from the fell line 92 of the cloth.
  • Guide positioning means 86 includes an eccentric 94 mounted on drive shaft 46.
  • a pair of rods 96 are fixed at their lower ends to eccentric arm 100, which forms part of eccentric 94, and are reciprocated along a nearly vertical line indicated by double headed arrow 102 once for each rootation of shaft 46. The upper.
  • arms 96 are slidably mounted in a bearing block 104 which is pivotally connected at 105 to a bell crank lever 106 mounted to the frame 14 by a pivot 108.
  • a central threaded rod 110 is fixed to bearing block 104 and extends freely through a bracket 1 I2 which is fixed to rods 96 at a position intermediate block 104 and eccentric 94, the lower end of this rod being slidably guided in eccentric arm 100.
  • An upper spring 114 is loosely mounted on the upper portion of central rod 110 and is held in position against bracket 112 by an upper stop 116 threaded on rod 110.
  • a lower spring 118 is loosely mounted on the lower portion of central rod 110 and is held in position against bracket 112 by a lower stop 120 threaded on rod 110.
  • bell crank lever 106 has a U shaped opening 122 within which a block 124 is slidably mounted.
  • the lower end of a lever 126 is pivotally connected at 128 to block 124.
  • the upper end of lever 126 is pivotally connected at 130 to block 88.
  • Upward movement of rods 96 causes spring 114 to be compressed by bracket 112 against stop 116. This forces central rod 110 upward thereby rocking bell crank lever in a counterclockwise direction as viewed in FIG. 6.
  • the effect of this motion of bell crank lever 106 is to position weft guide 84 to the partial beat-up position as indicated by dotted lines in FIG. 6.
  • Downward movement of the rods 96 causes spring 118 to be compressed by bracket 112 against stop 120 and force central rod 110 downwardly.
  • eccentric 94 Since eccentric 94 is mounted on shaft 46. arm 100 will be reciprocated once for every three beat-ups. Stops 116 and 120 are positioned on rod 110 so that spring 114 will be compressed during a greater portion of the reciprocation of rods 96 than spring 118 to the extent that weft guide 84 will occupy the partial beatup position for two beat-ups and the full beat-up position for one beat-up during each rotation of shaft 46. In addition. this lost motion" arrangement enables the weft guide to arrive at each of its beat-up positions sooner than would be possible if the full throw of the eccentric were utilized.
  • Disc 142 has a slot 143 in its periphery for a purpose to be described.
  • a disengageable connector or bell crank lever 144 is pivoted at 146 to disc 142.
  • One end of lever 144 has a tooth 148 for engagement with the tooth of wheel 138 and is held in driving engagement by a spring 150.
  • shaft 46 will be rotated at the same rate as shaft 140.
  • the other end of lever 144 has an cxtending finger 152 for a purpose to be described.
  • Detent means 154 are also included as part of the one rotation clutch 136 and include a lug 156 and a projecting finger 158 fixed to pivot 160. During the weaving of terry.
  • detent means 154 are disposed in an inactive position which allows clutch 136 to remain in driving condition.
  • this indication will be transmitted to the detent means 154 by connecting means generally indicated by the reference numeral 162.
  • the indication to change from terry weave to flat weave is considered a first indication" and is effective to partially rotate pivot 160 in a clockwise direction as viewed in FIG. 8 and thereby lower lug 156 against the peripheral edge surface 164 of disc 142. Lug 156 will continue riding on surface 164 until slot 143 is reached. At this point. lug 156 drops into slot 143 while.
  • Actuating means 166 includes a drive shaft 168 which makes one rotation for every three beat-ups and a crank 170 fixed to shaft 168.
  • a connector 172 is pivotally connected at 174 to crank 170 at one end and pivotally connected at 176 to lay drive assembly 30 at its other end.
  • crank 170 is in the position shown in FIG. 9
  • lay drive assembly 30 is in its first position at the time of beat-up for a full beat-up.
  • the pivot 174 is rotated in a circle indicated by dotted lines 178 and occupies the positions indicated at points 180 and 181 for the next two beat-ups. respectively.
  • FIG. 10 there is shown a modified beatup means for weaving terry and indicated generally by the reference numeral 182.
  • This modification includes a lay 184 fixed to a shaft 186 which is pivotally mounted on frame 14.
  • a lay drive assembly generally indicated at 188 includes a gear 190 fixed to a shaft 192 which is rotatably mounted on lever 194.
  • a crank 196 is fixed to shaft 192 and pivotally connected at 197 to one end of a connector 198.
  • the other end of connector 198 is pivotally connected at 200 to the lay 184.
  • Lever 194 is pivotally mounted on a drive shaft 202 which is rotatably mounted on frame 14. This shaft is driven by the loom drive mechanism at the rate of one rotation for every two weft insertions.
  • a gear 204 isfixed to drive shaft 202 and also makes one rotation for every two weft insertions.
  • Gear 190 is driven by gear 204 and makes two rotations for each rotation of gear 204 so that crank 196 reciprocates lay 184 once for every weft insertion.
  • the lay drive assembly 188 is positioned by actuating means generally indicated at 206.
  • Actuating means 206 includes a crank 208 fixed to a drive shaft 210 and a connector 212 pivotally connected at one end by a pivot 214 to crank 208 and at its other end by a pivot 216 to lever 194.
  • Shaft 210 makes one rotation for every three beat-ups of the lay.
  • Crank 208 is in the position shown in full lines in FIG.
  • lay 184 When the assembly 188 is in its second or dotted line position. lay 184 will be in its partial beat-up position at the time of beat-up as shown in dotted lines in FIG. 10. It is contemplated that an eccentric could be substituted for the crank 208. It is also contemplated that actuating means 44 of FIGS. 2-5 could be substituted for actuating means 206.
  • beat-up means comprising:
  • a lay pivotally mounted to said frame about a stationary axis
  • actuating means for moving said lay drive assembly to a first position for a full beat-up and to a second position for a partial beat-up.
  • said actuating means comprises:
  • actuating means comprises:
  • a. connecting means one end of which is pivotally connected to said lay drive assembly
  • beat-up control means comprising:
  • detent means attached to said connecting means for disengaging said connector from its motion transmitting function and for locking said driven member at a point where said lay drive assembly is in its first position.
  • said one rotation clutch mechanism comprises:
  • a bell crank lever pivoted to said disc one end of said lever being an extending finger and the opposite end having a tooth for engagement with said toothed wheel, wherein said disc will be rotated by said toothed wheel;
  • detent means attached to said connecting means and controlled by said pattern control mechanism, said detent means having an inactive position which permits said input shaft to drive said output shaft and an active position which allows said detent means to engage the outer periphery of said disc and to drop into said slot for locking said lay drive assembly in its first position and for striking and extending finger to disengage said tooth from said toothed wheel.
  • beat-up means comprising:
  • g. means for moving said lever to a first position for a full beat-up and to a second position for a partial beat-up.
  • said means for operatively connecting said lay to said second gear comprises:
  • a terry loom comprising:
  • e. means operating in timed relation with the movement of said lay for moving said weft guide to a first or second position wherein weft will be presented to said carrier in the first position during a full beatup and in the second position during a partial beatup.
  • a one rotation clutch mechanism for continuously driving the means for moving said weft guide and which. upon receiving a first indication remains in driving engagement until a specific point of its rotation is reached whereupon it becomes disengaged. and whereupon it becomes engaged upon receiving a second indication.
  • saidclutch mechanism being effective when disengaged to maintain said weft guide in its first position;

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US408702A 1973-10-23 1973-10-23 Terry motion for looms Expired - Lifetime US3877492A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US408702A US3877492A (en) 1973-10-23 1973-10-23 Terry motion for looms
CA209,011A CA1006070A (en) 1973-10-23 1974-09-10 Terry motion for looms
DE2446225A DE2446225C2 (de) 1973-10-23 1974-09-25 Frottier-Webmaschine
IT53345/74A IT1021686B (it) 1973-10-23 1974-10-03 Perfezionamento nei telai tessili
BE149288A BE820787A (fr) 1973-10-23 1974-10-07 Perfectionnements aux metiers a tisser pour tissus eponge
FR7434536A FR2248351B1 (de) 1973-10-23 1974-10-09
BR8593/74A BR7408593D0 (pt) 1973-10-23 1974-10-16 Aperfeicoamentos em tear para tecido felpudo
JP11873974A JPS5732140B2 (de) 1973-10-23 1974-10-17
GB45165/74A GB1488869A (en) 1973-10-23 1974-10-18 Terry motion for loom
GB10037/77A GB1488870A (en) 1973-10-23 1974-10-18 Weft presenting means for terry looms
CH390977A CH613480A5 (de) 1973-10-23 1974-10-23
CH1417974A CH592757A5 (de) 1973-10-23 1974-10-23
CS747265A CS204991B2 (en) 1973-10-23 1974-10-23 Reciprocatory slay controlling mechanism in weaving machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US408702A US3877492A (en) 1973-10-23 1973-10-23 Terry motion for looms

Publications (1)

Publication Number Publication Date
US3877492A true US3877492A (en) 1975-04-15

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Application Number Title Priority Date Filing Date
US408702A Expired - Lifetime US3877492A (en) 1973-10-23 1973-10-23 Terry motion for looms

Country Status (11)

Country Link
US (1) US3877492A (de)
JP (1) JPS5732140B2 (de)
BE (1) BE820787A (de)
BR (1) BR7408593D0 (de)
CA (1) CA1006070A (de)
CH (2) CH592757A5 (de)
CS (1) CS204991B2 (de)
DE (1) DE2446225C2 (de)
FR (1) FR2248351B1 (de)
GB (2) GB1488869A (de)
IT (1) IT1021686B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423354A (en) * 1993-03-03 1995-06-13 Lindauer Dornier Gesellschaft Mbh Drive system for a loom slay shaft for producing terry or smooth fabric

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59140069A (ja) * 1982-12-28 1984-08-11 Fujitsu Ltd 印字ヘツド駆動方式
CN102677374B (zh) * 2012-05-18 2014-04-16 浙江理工大学 一种筘动式行星齿轮传动织带机起毛机构

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265095A (en) * 1964-10-06 1966-08-09 Draper Corp Loom reed motion

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1688038U (de) * 1954-06-03 1954-12-02 Jean Guesken G M B H Einrichtung zur herstellung von schubnoppengeweben.
US3009485A (en) * 1959-03-16 1961-11-21 Bigelow Sanford Inc Method and apparatus for making patterned rough textured pile fabric floor covering
AT264403B (de) * 1965-08-26 1968-08-26 Cannon Mills Co Schützenloser Webstuhl zum Weben von Schubnoppengeweben

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265095A (en) * 1964-10-06 1966-08-09 Draper Corp Loom reed motion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423354A (en) * 1993-03-03 1995-06-13 Lindauer Dornier Gesellschaft Mbh Drive system for a loom slay shaft for producing terry or smooth fabric

Also Published As

Publication number Publication date
CH613480A5 (de) 1979-09-28
BE820787A (fr) 1975-02-03
JPS5732140B2 (de) 1982-07-09
FR2248351B1 (de) 1978-05-05
BR7408593D0 (pt) 1975-08-05
GB1488870A (en) 1977-10-12
DE2446225A1 (de) 1975-04-24
DE2446225C2 (de) 1983-01-27
GB1488869A (en) 1977-10-12
IT1021686B (it) 1978-02-20
CH592757A5 (de) 1977-11-15
CS204991B2 (en) 1981-04-30
FR2248351A1 (de) 1975-05-16
CA1006070A (en) 1977-03-01
JPS5070650A (de) 1975-06-12

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