US1925044A - Loom - Google Patents

Loom Download PDF

Info

Publication number
US1925044A
US1925044A US482205A US48220530A US1925044A US 1925044 A US1925044 A US 1925044A US 482205 A US482205 A US 482205A US 48220530 A US48220530 A US 48220530A US 1925044 A US1925044 A US 1925044A
Authority
US
United States
Prior art keywords
shuttle
cam
carrier
loom
carriers
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
US482205A
Other languages
English (en)
Inventor
Arthur J Briggs
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.)
BRIGGS LOOM Corp
Original Assignee
BRIGGS LOOM 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 BRIGGS LOOM CORP filed Critical BRIGGS LOOM CORP
Priority to US482205A priority Critical patent/US1925044A/en
Priority to FR724349D priority patent/FR724349A/fr
Priority to GB25107/31A priority patent/GB387742A/en
Priority to DEB151983D priority patent/DE591723C/de
Priority to CH159924D priority patent/CH159924A/de
Priority to AT129618D priority patent/AT129618B/de
Application granted granted Critical
Publication of US1925044A publication Critical patent/US1925044A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D03D49/24—Mechanisms for inserting shuttle in shed
    • D03D49/46—Mechanisms for inserting shuttle in shed wherein the shuttle is pushed or pulled positively

Definitions

  • This invention relates to looms, and has for an object the provision ofan improved shuttle mechanism for looms used for weaving fabrics, from silk, cotton, wool, wire, etc.
  • a particular object of the invention is to provide a simple and positive mechanically operated shuttle mechanism, which will operate smoothly at high speed, having the shuttle under positive control at all times during its passage through the shed, and also to provide a mechanism; which passes the shuttle through the shed at an ap proximately uniform speed, avoiding the stop at the point of transfer of the-shuttle from one arm to the other necessary with other devices for positive shuttle operation.
  • a further object of my invention is toprovide simple and reliable mechanism to produce the sequence of motion of the shuttle carrying members necessary to accomplish the desired re sult.
  • a cam movement characterized by a single large cam having a cam path adaptedtoactuate each carrier throughout the complete cycle of its movements, whereby each revolution of the cam efiects a complete cycle of movements of both carriers; also the provision of a novel cam movement characterized by a cam having a cam path embodying a .plurality of cam tracks arranged in different parallel planes, in combination with a cam-roller device having a plurality of cam rollers mounted upon a common axis in position for engagement of one of the.
  • rollers with each cam track, the rollers being freely rotatable in opposite senses of rotation relatively to each other, whereby there is no need for reversal in the direction of movement of any of the rollers and much friction and jarring avoided, and greater smoothness of operation and durability of parts is secured.
  • Still another objectof the invention is to provide an improved tension and is -off mechanism for the warps.
  • Fig. 1 is a view in front elevation of a loom in the construction of which the invention has been embodied.
  • Fig. 2 is a view in side elevation thereof.
  • Fig. 3 is a fragmentary detail view in vertical section on the line 3--3 of Fig.1, upon a larger scale.
  • FIG. 4 is a view of a diagrammatic character of the shuttle actuating mechanism in elevation.
  • Fig. 5 is a fragmentary detail view in" rear elevation of the shuttle-transferring partswith the shuttle at the transfer point, Y
  • Fig. 6 is a fragmentary, detailview in section on the line 6-6 of Fig. 4, showing the preferred cam-roller devices, on a larger scale.
  • the part designated bythe reference character 1 is a frame upon which the'operating parts are mounted.
  • a plurality of reciprocating shuttle carriers 2 and 3 are provided, of any construction suitable to effect positive reciprocating movement of the shuttle 4 in both directions through the shed, designated generally by the reference character 8, in a manner characterized by the fact'that the shuttle is caused to move in each direction with a uniform rate of acceleration during the first part of its travel, and at substantially uniform speedat the region" of transfer from carrier to carrier, and at a umform rate of deceleration toward the end of its travel.
  • the carriers 2 and 3 are fitted slidingly upon suitable ways 5 mounted rigidly upon the top of r form, being shown as comprising a rod fixed in brackets 6 and '7, at the ends and middle of the frame respectively.
  • the shuttle carriers Z and Bare operated respectively by connecting links 8, levers 9, connecting links 10, and sub-levers 11, the latter having cam-rollers 12 and 13 which respectively work at diametrically opposite sides of a continuous cam-path 14 formed in the face of a large gear wheel 15 fixed on a shaft 16 j'ournalledin bearings 17 supported by the frame, the peripheral teeth 18 of the wheel 15 being driven by a pinion 19 on a shaft 20 provided with a pulley 21 adapted to be actuated by a belt running to any suitable source of power (not shown).
  • the shuttle carriers 2 and 3 are herein shown as U-shaped members, each of which has a tubular lower leg 90 fitted to slide freely on the rod 5, and provided with a stud 91 arranged to run'in slotted bars 92 which keep the carriers in alignment.
  • On the inner free ends of the arms 2 and 3 are blades 22 and 23 which are'adapted to engage slotted portions 24 at the top and bottom of the rear side of the shuttle 4 (see Fig. 5)..
  • the blades are provided with latches 25, 26,
  • Wires 93 run from the latches to bell-crank levers 94 having rollers 95 arranged to be engaged with cams 96 suitably mounted on the frame to cause the lever 94 to pull the wires 93 and raise the latches just as the shuttle reaches its central position.
  • latches do not perform any part in the operation of transferring the shuttle from one carrier to the other. They simply function to hold the shuttle in position on the blades during the period of acceleration at the beginning of its fiight and during the period of deceleration toward the end of its flight, preventing accidental displacement, and are not indispensable to the operation of the loom.
  • the back sides of the notched portions 28 on the shuttle may be provided with inclined portions 97, the object of which is to compensate for over travel or inaccuracies of the operating mechanism, the latch sliding up the incline without disturbing the flight of the shuttle, and the springs 29 insuring the return of the latches to the proper position.
  • the sections of the cam B to C and D to E are dwells during which the arms remain at rest. During this interval, the beating and the shedchanging mechanism of the loom operate. From C to F the shuttle is accelerated and brought up to speed, the shuttle advancing to the point F. From F to G the speed is uniform. At G on the cam the shuttle reaches the center of travel at A at which point it is transferred to the other carrying arm. From G to H the empty carrier is brought to a stop and returned to the outer position by the section of the cam H--E-.
  • the empty carrier on the other side is advanced at a faster speed than the shuttle is traveling, going past the center to K and K, reversing its motion and arriving at L and A at the same time as the carrier carrying the shuttle.
  • the result is that the shuttle is accelerated at a uniform rate of acceleration from C travels at uniform speed to M, from M to B it is decelerated at a uniform rate of deceleration, and brought to rest.
  • the shed-forming mechanism S may be of any suitable character, and is herein illustrated as of a well-known type, comprising heddles 36 and 31, mounted to reciprocate vertically in the frame part 32, and actuated respectively by a lever 33, and a lever 34 with connecting link 35, the levers 33 and 34 respectively having arms 36 and 37 connected pivotally with a cam-roller 38 running in a cam-slot 39 upon the periphery of a barrel cam 40 fixed upon the main shaft 16 which also carries the shuttle actuating cam wheel 15 already described.
  • the barrel cam 40' also has a cam slot 41 in which runs a cam-roller 42 operating a lever 43 which actuates the beater frame 44, provided with a link 45 to insure parallel horizontal motion of the beater 46, these parts being of conventional construction, as are also the take-up mechanism designated generally by the reference character T, comprising a roll 4'7 on which the fabric F is accumulated, after passing around guide rolls 48 and a drum'49, the roll 47 being actuated by suitable gearing 50 including also a worm-shaft 51 operated by a pawl and ratchet mechanism 52, actuated through a link 53 by a lever on a rockshaft 55, and an arm 56 which receives its motion from a cam 5'7 on the cam wheel 15.
  • suitable gearing 50 including also a worm-shaft 51 operated by a pawl and ratchet mechanism 52, actuated through a link 53 by a lever on a rockshaft 55, and an arm 56 which receives its motion from a cam 5'7 on the cam
  • the warps W are derived from a suitable warpbeam 66 provided preferably with tension and let-off mechanism which may be of any suitable construction.
  • I 1 7 As a now-preferred form of let-off and tension mechanism the drawings show the warpbeam as having a worm-gear 61 meshing with a worm 62 provided with a crown-ratchet wheel 63 adapted to be given a step-by-step rotation by a pawl 64 on a lever 65 carried by a collar 66 mounted slidingly on the worm-shaft 67, the lever 65 being oscillated by a link 68 actuated by a crankarm 69 on the shaft 16.
  • the collar 66 can be shifted axially on the shaft 67 by means of a yoke 69 at the free end of a lever 70 which is pivoted at '71 on the frame 1 and has short arms '72 which carry a bellcrank'lever 73 on which is mounted a whip-roll '74 over which the warps" W pass in conventional manner.
  • the long arm '75 of lever 73 is connected adjustably by a link 76 with an arm 77 on the lever 43 of the beater motion mechanism and is oscillated thereby in a conventional manner to take up the slack incidental to the shed formation, the lever 73 being pivotally mounted at '78 on the arm '72 of lever 70.
  • a spring '79 acts to bias the arm '70 toward the left into the normal position shown in Fig. 2, in which the pawl 64 on collar 66 is out of engagement with the crown wheel 63, and the whip-roll 74 tends to resist the tension normally exerted by the warps W.
  • a latch 80 acting to hold the collar and pawl at their extreme right-hand position, until a projection 81 on the crown wheel is brought into contact with the latch 80 and throws it off, the projection 81 making one such contact for every rotation of the crown wheel.
  • pair of rollers 12a, 12b which, in accordance with the invention, constitute one of the cam-roller devices
  • the other cam-roller device being similarly constituted by a pair of rollers 13a, 13b, each of the pairs of rollers being mounted co -axially upon a bearing pin, 12c, 130, so that the rollers are free to turn, independently of each other, in opposite senses of rotation, one roller of each pair, as 12a, 1311 having its outermost portion engaged with the track 14c while the other roller, 12?), 13b, has its innermost portion engaged with the track 142).
  • Its embodiment is not limited to face cam structures, but may be utilized in connection with cam tracks formed in the peripheries of barrel cams, and in general wherever it may be applied advantageously by virtue of the nature of my improvements.
  • the shuttle is under positive mechanical control at all times, and the speed of travel of the shuttle through the warp shed is uniform, thus laying the filler yarn evenly and with uniform tension at high speeds.
  • the shuttle and shuttle carrying mechanism are not subjected to destructive shock at high speed, resulting in long life, continuous operation and freedom from noise, and the shuttle does not come in contact with the warp and cause fraying of delicate yarns.
  • a loom of the type characterized by having shed-forming means and a plurality of carriers adapted respectively to be moved throughthe shed, carrying the shuttle and acting to transfer said shuttle to each other alternately at an intermediate portion of its path, said loom being further characterized by means to actuate said carriers in such manner that the transit of the shuttle is efiected continuously and each transfer of the shuttle is effected positively from carrier to carrier without change of the velocity of-the shuttle.
  • a loom of the type characterizedby having shed-forming means and a plurality of carriers adapted respectively to be moved through the shed, carrying the shuttle and acting to transfer said shuttle to each other alternately at an intermediate portion of its path, said loom being further characterized by means to actuate said carriers in such manner that the transit of the shuttle is effected continuously and each transfer of the shuttle is effected positively from carrier to carrier without change of the velocity of theshuttle, and when said shuttle is approximately at the middle of its travel.
  • a loom as in claim 1 and further characterized by the fact that the shuttle is caused to move with a uniform rate of acceleration during the first part of its travel, and at a uniform rate of deceleration toward the end of its travel, and at substantially uniform speed at the region of transfer.
  • a loom as in claim 1 further characterized by latching devices to retain the shuttle on the carriers and means to operate said latches respectively for simultaneous release of the shuttle from one carrier and retention of the shuttle by the other carrier at the transfer point, at which point said carriers are both moving in the same direction and at the same speed, said latches being spring urged into shuttle retaining position, and means to hold said latches positively out of engagement with the shuttle until the empty carrier has receded from the shuttle.
  • means for operating the shuttle carriers comprising a rotating cam member having a cam path adapted to actuate each carrier throughout the complete cycle of its movements, and carrier-operating devices engaging said cam path at diametrically opposite 0 regions of its extent, one-half of this cam path being adapted to operate the carrier containing the shuttle while the other half of the cam path is operating the empty carrier.
  • means for operating the shuttle carriers comprising a rotating cam member having a cam path adapted to actuate each carrier throughout the complete cycle of its movements, and carrier-operating devices engaging said cam path at diametrically opposite regions of its extent, one-half of this cam path being adapted to operate thevcarrier containing the shuttle while the other half of the cam path is operating the empty carrier, whereby each revolution of the said cam effects a complete cycle of movements of both carriers.
  • a loom of the type characterized by having shed-forming means and a plurality of carriers adapted respectively to be moved through the shed, carrying the shuttle and acting to transfer said shuttle to each other alternately at an intermediate portion of its path, said loom being further characterized by means for operating the shuttle carriers comprising a rotating cam meniber having a cam path adapted to actuate each carrier throughout the complete cycle of its move ments, and carrier-operating devices engaging said cam path at diametrically opposite regions of its extent, one-half of this cam path being adapted to operate the carrier containing the shuttle while the other half of the cam path is operating the empty carrier, whereby each revolution of said cam effects a complete cycle of movements of both carriers.
  • a loom of the type characterized by having shed-forming means and a plurality of carriers adapted respectively to be moved through the shed, carrying the shuttle and acting to transfer said shuttle to each other alternately at an intermediate portion of its path, said loom being further characterized by means to actuate said carriers in such manner that each transfer of the shuttle is effected from a carrier moving continuously at uniform speed with the shuttle on its inward path through the shed to a carrier moving at the same speed on its outward path through the shed, whereby the complete transit of the shuttle through the shed is efiected continuously and without change of the velocity of the shuttle throughout the region of its transfer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
US482205A 1930-09-16 1930-09-16 Loom Expired - Lifetime US1925044A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US482205A US1925044A (en) 1930-09-16 1930-09-16 Loom
FR724349D FR724349A (fr) 1930-09-16 1931-09-07 Perfectionnements aux mécanismes de mouvement de navette pour métiers à tisser
GB25107/31A GB387742A (en) 1930-09-16 1931-09-07 Improvements in or relating to shuttle mechanism for looms
DEB151983D DE591723C (de) 1930-09-16 1931-09-11 Steckschuetzenantrieb
CH159924D CH159924A (de) 1930-09-16 1931-09-14 Mechanischer Webstuhl mit positivem Schützenantrieb.
AT129618D AT129618B (de) 1930-09-16 1931-09-15 Mechanischer Webstuhl mit positivem Schützenantrieb.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US482205A US1925044A (en) 1930-09-16 1930-09-16 Loom

Publications (1)

Publication Number Publication Date
US1925044A true US1925044A (en) 1933-08-29

Family

ID=23915144

Family Applications (1)

Application Number Title Priority Date Filing Date
US482205A Expired - Lifetime US1925044A (en) 1930-09-16 1930-09-16 Loom

Country Status (6)

Country Link
US (1) US1925044A (de)
AT (1) AT129618B (de)
CH (1) CH159924A (de)
DE (1) DE591723C (de)
FR (1) FR724349A (de)
GB (1) GB387742A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552717A (en) * 1950-03-15 1951-05-15 New York Wire Cloth Company Shuttle drive for looms
US3144885A (en) * 1960-11-09 1964-08-18 Wisconsin Wire Works Loom

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3704332B2 (ja) * 2002-10-16 2005-10-12 株式会社ナーゲット 織物製造方法及び製造装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552717A (en) * 1950-03-15 1951-05-15 New York Wire Cloth Company Shuttle drive for looms
US3144885A (en) * 1960-11-09 1964-08-18 Wisconsin Wire Works Loom

Also Published As

Publication number Publication date
AT129618B (de) 1932-09-10
FR724349A (fr) 1932-04-25
CH159924A (de) 1933-02-15
GB387742A (en) 1933-02-16
DE591723C (de) 1934-01-26

Similar Documents

Publication Publication Date Title
US2399880A (en) Device for forming selvages on woven fabrics
US1925044A (en) Loom
US1161979A (en) Automatic multiple-shuttle textile-loom.
US245259A (en) crompton
US3493013A (en) Manufacture of a leno interlacing
US1337259A (en) Needle-loom
US2416098A (en) Narrow fabric multiple web loom
US1980666A (en) Loom and fabric
US688638A (en) Loom for weaving bordered fabrics.
US3066703A (en) Narrow fabric loom
US2771098A (en) Picking motion for a loom
US2722950A (en) Looms
US3877492A (en) Terry motion for looms
US1391958A (en) Needle-loom
US502024A (en) woodward
US2235760A (en) Loom
US3080894A (en) Means for controlling loom harnesses
US547130A (en) poyser
US308489A (en) Halgh
US234758A (en) dorg-eyal
US119276A (en) Improvement in looms for weaving hair-cloth and fabrics produced thereon
US1526990A (en) Loom
US338891A (en) wadsworth
US1797473A (en) Bullion-fringe loom apparatus
US435565A (en) kennedy