US3378042A - Mechanism for simultaneously varying the speed of movement and dwell time of a reed - Google Patents

Mechanism for simultaneously varying the speed of movement and dwell time of a reed Download PDF

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Publication number
US3378042A
US3378042A US527702A US52770266A US3378042A US 3378042 A US3378042 A US 3378042A US 527702 A US527702 A US 527702A US 52770266 A US52770266 A US 52770266A US 3378042 A US3378042 A US 3378042A
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US
United States
Prior art keywords
crank
reed
movement
slot
slide block
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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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US527702A
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English (en)
Inventor
Fransen Theodorus
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Individual
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Individual
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Publication date
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Publication of US3378042A publication Critical patent/US3378042A/en
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay

Definitions

  • the invention relates to a loom, having a reed, which can be driven by means of a rotatable shaft provided with a crank means and a connecting rod cooperating with said crank means.
  • the object of the invention is to obtain a loom in which the fraction of the cycle of the movement of the lay during which the reed is in its retracted position, thus that position in which a weft can be inserted into the shed, can be adjusted precisely to provide just the necessary stagnation period in that position, in order to allow a maximum fraction of the cycle for the movement of the lay.
  • the driving means for the reed comprises a crank of adjustable radius and a connecting rod of adjustable length which is coupled to a slide block adapted to make a reciprocable movement upon rotation of the crank means and which slide block is provided with a slot in which a crank pin of a rotatably supported shaft fits, which shaft is coupled to the lay carrying the reed, whereas said slot is positioned parallel to the path of movement of said slide block, which slot at one end possesses a part, which is deviated from the path of said movement.
  • the driving of the crank by means of this slot is very supple, owing to which this driving is particularly noiseless, particularly because the slot in the slide block is adapted in such a manner, that the crank pin is always locked up with diametrically positioned sides within the slot.
  • FIG. 1 is a diagrammatic vertical section through a loom showing the essential parts
  • FIG. 2 is a side view of the driving mechanism for the reed, partly shown in cross section.
  • the shaft 1 carries a crank 2 having a crank pin 3.
  • the crank pin 3 is indicated in cross section in FIG. 2.
  • the shaft 1 is supported in bearings connected to the frame of the loom which bearings are not shown in the drawing.
  • the head 4 of a connecting rod 5 fits around the crank pin 3.
  • the length of the connecting rod 5 is adjustable by means of a central part 5a, which is threaded into the end portions of the connecting rod by means of left and right screw threads.
  • the part So can be locked with respect to the end portions of the connecting rod 5 by means of lock nuts 6.
  • the connecting rod 5 possesses a fork at 7 in which a pivot pin 3 fits.
  • a part of the slide block 9 fits around the pivot pin 8.
  • the slide block 9 can slide in a guide of which the upper part 19a and the lower part 1% are visible in the drawing.
  • the guide is fastened to the frame of the loom.
  • the slide block 9 possesses a slot 15 to accommodate a crank pin 11 mounted on a crank 12 positioned next to the slide block a, which crank is a part of a rotatably supported shaft 13.
  • the shaft 13 is mounted in bearings fastened to the frame of the loom not shown in the drawing.
  • crank pin 3 On rotation of the shaft 1 the crank pin 3 moves according to the crank circle 14 indicated with a dash dotted line.
  • the slide block 9 is reciprocated by the connecting rod 5.
  • the part 15a of the slot is positioned parallel to the path of movement of the slide block 9.
  • the crank pin 11 remains in its indicated position during a considerable part of the movement of the crank pin 3 around the crank circle 14, because the part 15a of the slot can move past the crank pin 11.
  • the slot in the slide block 9 possesses a part 151) deviating from the path of movement of the slide block. In a position of the crank 2 and the crank pin 3, which position is indicated by a dash dotted line 16 the deviated part 15b of the slot link in the block 9 contacts the crank pin 11.
  • crank pin 11 is urged into a position which is indicated by a dash dotted line 17.
  • the shaft 13 makes an angular displacement.
  • the crank pin 11 comes into the position which is indicated by the dash dotted line 17 the crank 2 is in such a position that the slide block comes to the end of its stroke.
  • the crank pin is in its dead point with respect to the slide block 9 and with further movement the crank pin 11 is retracted until it leaves the part 15b of the slot and arrives in the part 15a of same.
  • the crank pin 11 will not be displaced until after the movement of the slide block 9 has been reversed.
  • the shaft 13 possesses a crank 18 in which a pin 19 is mounted.
  • a connecting rod 20 is connected to this pin 19 and the upper end of the connecting rod 20 is connected to a pin 21 of a crank 22, which crank 22 is connected to a rotatably supported hollow shaft 23.
  • the hollow shaft 23 is a part of the frame of the reed. At both sides of the shed the hollow shaft 23 possesses projecting arms 24 in which the bars 25 of the reed are fastened.
  • the period during which the reed stagnates can be changed when use is made of the crank 2, which crank is provided with a slot 2a in which the crank pin 3-is adjustably mounted.
  • the eccentricity of the crank is thus adjustable.
  • the angle of displacement on the crank circle can be set to vary the stroke of the slot in such a manner, that during a determined angle the crank pin 11 remains for a longer or shorter residual part of the stroke in the part 15a of the slot.
  • the part 15a creates during the stroke of the slide block, the period of stagnation of the reed.
  • a loom comprising a reed, a driving member which is mounted to oscillate and has a slot having a portion extending in the direction of oscillation and an adjacent portion deviating from the direction of oscillation, and a driven member having a pin engaged in such slot and having a driving connection with the reed
  • the improvement comprises a rotary crank having a crank pin mounted for adjustment radially of the crank to vary the stroke of the crank, and a connecting rod which is pivoted to the crank pin and to the driving member to oscillate the driving member, and which is adjustable in length to permit the path of movement of the reed to be held constant when the stroke of the crank is adjusted to vary the speed of movement and dwell time of the reed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Transmission Devices (AREA)
US527702A 1965-02-19 1966-02-16 Mechanism for simultaneously varying the speed of movement and dwell time of a reed Expired - Lifetime US3378042A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6502155A NL6502155A (xx) 1965-02-19 1965-02-19

Publications (1)

Publication Number Publication Date
US3378042A true US3378042A (en) 1968-04-16

Family

ID=19792426

Family Applications (1)

Application Number Title Priority Date Filing Date
US527702A Expired - Lifetime US3378042A (en) 1965-02-19 1966-02-16 Mechanism for simultaneously varying the speed of movement and dwell time of a reed

Country Status (5)

Country Link
US (1) US3378042A (xx)
BE (1) BE675865A (xx)
CH (1) CH439164A (xx)
GB (1) GB1134786A (xx)
NL (1) NL6502155A (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858621A (en) * 1971-07-12 1975-01-07 Vyzk Vyvojovy Ustav Vseobe Mechanism for actuating the slay of a weaving loom
US3964524A (en) * 1975-01-08 1976-06-22 Wayne H. Coloney Co., Inc. Loom lay drive linkage
CN102534962A (zh) * 2010-12-09 2012-07-04 江苏万工科技集团有限公司 一种双曲柄五杆打纬机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190728567A (en) * 1907-01-05 1908-10-08 Louis Delahousse Improvements in and connected with Devices for Beating Up the Weft in Looms for Weaving.
FR399381A (fr) * 1909-02-08 1909-06-28 Louis Durochat Serrage perpendiculaire de la duite dans les métiers à tisser
US1747722A (en) * 1928-06-14 1930-02-18 Lucas Lamborn Loom Corp Beater mechanism for looms
FR1310490A (fr) * 1961-03-13 1962-11-30 Perfectionnements aux métiers à tisser à réserve de trame fixe
US3097669A (en) * 1961-09-28 1963-07-16 Draper Corp Lay motion for looms
US3139118A (en) * 1958-05-09 1964-06-30 Svaty Vladimir Pneumatic weft guides for looms

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190728567A (en) * 1907-01-05 1908-10-08 Louis Delahousse Improvements in and connected with Devices for Beating Up the Weft in Looms for Weaving.
FR399381A (fr) * 1909-02-08 1909-06-28 Louis Durochat Serrage perpendiculaire de la duite dans les métiers à tisser
US1747722A (en) * 1928-06-14 1930-02-18 Lucas Lamborn Loom Corp Beater mechanism for looms
US3139118A (en) * 1958-05-09 1964-06-30 Svaty Vladimir Pneumatic weft guides for looms
FR1310490A (fr) * 1961-03-13 1962-11-30 Perfectionnements aux métiers à tisser à réserve de trame fixe
US3097669A (en) * 1961-09-28 1963-07-16 Draper Corp Lay motion for looms

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858621A (en) * 1971-07-12 1975-01-07 Vyzk Vyvojovy Ustav Vseobe Mechanism for actuating the slay of a weaving loom
US3964524A (en) * 1975-01-08 1976-06-22 Wayne H. Coloney Co., Inc. Loom lay drive linkage
CN102534962A (zh) * 2010-12-09 2012-07-04 江苏万工科技集团有限公司 一种双曲柄五杆打纬机构

Also Published As

Publication number Publication date
BE675865A (xx) 1966-06-16
NL6502155A (xx) 1966-08-22
GB1134786A (en) 1968-11-27
CH439164A (de) 1967-06-30

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