US3137323A - Loom lay beam - Google Patents

Loom lay beam Download PDF

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Publication number
US3137323A
US3137323A US175512A US17551262A US3137323A US 3137323 A US3137323 A US 3137323A US 175512 A US175512 A US 175512A US 17551262 A US17551262 A US 17551262A US 3137323 A US3137323 A US 3137323A
Authority
US
United States
Prior art keywords
lay
loom
reed
lay beam
rear wall
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
US175512A
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English (en)
Inventor
Rodney C Southworth
Randell F Sample
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.)
Draper Corp
Original Assignee
Draper 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 Draper Corp filed Critical Draper Corp
Priority to US175512A priority Critical patent/US3137323A/en
Priority to DE19631535351 priority patent/DE1535351B1/de
Priority to FR925765A priority patent/FR1357128A/fr
Priority to CH239263A priority patent/CH401856A/de
Application granted granted Critical
Publication of US3137323A publication Critical patent/US3137323A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • D03D49/62—Reeds mounted on slay

Definitions

  • shuttleless looms of the type to which the instant invention is applicable are provided intermediate the loomsides with swords for supporting the loom lay-beam and for guiding the same in a known manner through the arc of travel it is caused to follow during loom operation.
  • a novel, light weight metallic loom lay beam can now be provided which because of its cross-sectional configuration and being of light weight construction is more resistant to the excessive deflections that were experienced with the lay beams of the prior art.
  • FIG. 1 is a plan view of a lay beam according to the 3,137,323 Patented June 16', 1964 cording to the invention, unassociated with other loom parts and having a section removed for convenience of illustration; and
  • FIG. 5 is a sectional view of the lay beam according to the invention showing the relative positions of the raceway, reed and reed clamping member when assembled thereto.
  • lay beam 10 is formed in part as an inverted U-section having a top planar surface 11. Extending downwardly from surface 11 and integral therewith, there is provided a vertical front wall 12 which forms the. front of the lay beam. A rear wall 13 interconnected with surface 11 extends downwardly therefrom and being in opposed relationship to front wall 12 it extends parallel therewith for the entire length of the lay. Extending rearwardly in a horizontal plane, with respect to the top planar surface 11, rear wall 13 includes a Web member 14 disposed intermediate the upper and lower extremities of said wall 13. Web member 14 includes an angularly formed seat in the form of a step 15 on which the lower portion of the reed is caused to seat when assembled to the lay.
  • FIG. 5 shows a portion of one of the loom swords 16 which supports the lay beam at one end along with other associated components which assemble to the lay beam including a woodraceway 17, a reed 18, a bottom shed support 19 and a reed clamping member 20.
  • the lower end of reed 18 seats in step 15 and the lower portion of the reed is firmly held between the rear wall 13 of the lay and the clamping member 20 by means of a plurality of bolts 21 passing through aligned apertures positioned at spaced intervals along the length ofthese members.
  • the bottom shed support 19 is positioned on the rearward edge of the top planar surface 11 between raceway 17 and reed 18 and being constructed of a wear resistant material, is adapted to contact the lower warp sheet during loom operation to prevent said warp from wearing into said raceway.
  • the cross-sectional configuration of the lay beam 10 is such as to provide a relatively light weight construction and yet possess sufficient stiffness to resist excessive defiec tions during loom operation plus the forces to which it would be subjected on sudden loom stoppages.
  • the lay beam can, as shown in FIGS. 1 and 3, be machined by tapering the web member 14 from central points thereof such as at 22 and 23 outwardly to the ends of the lay.
  • Structural fatigue tests were conducted on a standard test machine, having a capacity of two thousand pounds, to obtain the endurance capacity and stiffness of the lay beam structure. The nominal stresses imposed thereon were measured with standard strain gauges.
  • This lay has a cross-sectional configuration which is generally H-shaped and includes a clamping member on its rear wall for holding and positioning the reed, whereas applicants lay includes in addition to the reed clamping member a horizontally disposed and rearwardly directed integral Web member for added rigidity during loom operation.
  • lay beam will be referred to hereinafter as lay A and the lay beam of the prior art which underwent these comparison tests will be referred to as lay B.
  • the test machine was set up with a preload of 800 lbs. and a dynamic load of $650 lbs.
  • the forces imposed upon these lay beams were greater than would be had under actual loom running conditions and these forces were concentrated at those points of compression at beat-up and where tension is setup at overthrow of the lay.
  • overthrow is meant the instant the lay reverses its direction of travel after beat-up or that period of time it is returning to the initial state it had prior to beat-up.
  • lay B broke after 1,755,000 cycles of compression at beat-up and withstood only 204,000 cycles of the tension to which it was subjected at overthrow before failing.
  • Lay A was subjected to 50,000,000 cycles of compression at beat-up and 122,000,000 cycles of overthrow tension and no indication of failure was evident at the completion of this test.
  • lay B A static test which consisted of a two hundred fortypound concentrated load at the center of each lay beam showed a deflection on lay B of .061" in the beat-up direction and .055" in the overthrow direction.
  • Lay A showed considerably less deflection when subjected to this load with only .036" in the beat-up direction and .037 in the overthrow direction.
  • a light weight metallic lay beam of unitary construction formed in part as an inverted U-section including top, front and rear walls and a web extending rearwardly from said rear Wall and providing in conjunction with the rear wall an angularly formed seat for the reed.
  • light weight metallic lay beam of unitary construction formed in part as an inverted U-section including top, front and rear walls and a web extending rearwardly from said rear wall and providing in conjunction with the rear wall an angularly formed seat for the reed, said Web being positioned intermediate the vertical extremities of the rear wall.
  • a light weight metallic lay beam of unitary construction formed in part as an inverted U-section including top, front and rear walls and a Web extending rearwardly from said rear Wall and providing in conjunction with the rear wall an angularly formed seat for the reed, said web being positioned intermediate the vertical extremities of the rear Wall, and is tapered from a central section of the beamtoward the ends.
  • a light weight metallic lay beam of unitary construction formed in part as an inverted U-section including top, front and rear walls and a Web extending rearwardly from said rear wall and providing in conjunction with the rear wall an angularly formed seat for the reed, a clamping member bolted to said rear wall to support said reed in position.
  • a light weight metallic lay beam of unitary construction including a top planar surface extending the length of said lay beam, a vertical front wall extending downwardly from i said planar surface and an opposed, parallel rear wall integrmly formed with said top planar surface, said rear wall including a longitudinally extending and rearwardly directed web portion, said web being integral with and disposed intermediate the upper and lower ends of said rear wall, said lay beam including a means for attachment to said swords anda further means for fixedly positioning said reed thereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US175512A 1962-02-26 1962-02-26 Loom lay beam Expired - Lifetime US3137323A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US175512A US3137323A (en) 1962-02-26 1962-02-26 Loom lay beam
DE19631535351 DE1535351B1 (de) 1962-02-26 1963-02-22 Ladenbalken fuer Webmaschinen
FR925765A FR1357128A (fr) 1962-02-26 1963-02-22 Sommier de battant pour métier à tisser sans navette
CH239263A CH401856A (de) 1962-02-26 1963-02-25 Ladebalken für einen Webstuhl

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US175512A US3137323A (en) 1962-02-26 1962-02-26 Loom lay beam

Publications (1)

Publication Number Publication Date
US3137323A true US3137323A (en) 1964-06-16

Family

ID=22640504

Family Applications (1)

Application Number Title Priority Date Filing Date
US175512A Expired - Lifetime US3137323A (en) 1962-02-26 1962-02-26 Loom lay beam

Country Status (3)

Country Link
US (1) US3137323A (de)
CH (1) CH401856A (de)
DE (1) DE1535351B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373773A (en) * 1965-07-12 1968-03-19 George H. Balentine Jr. Loom

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161787A (en) * 1938-04-18 1939-06-13 Crompton & Knowles Loom Works Backstay for loom reeds
GB589105A (en) * 1944-03-08 1947-06-11 Saurer Ag Adolph Improvements in or relating to reed-supporting means for looms
US2489978A (en) * 1947-02-18 1949-11-29 Draper Corp Loom reed support
US2524670A (en) * 1949-04-01 1950-10-03 Crompton & Knowles Loom Works Reed beatup mounting for loom lays
US2529456A (en) * 1946-10-24 1950-11-07 Draper Corp Loom lay and beam
US2817369A (en) * 1955-08-25 1957-12-24 Crompton & Knowles Loom Works Convertible lay for loom

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2897843A (en) * 1956-10-17 1959-08-04 Farmingdale Mfg Corp Lay for weaving looms
AT207337B (de) * 1957-07-04 1960-01-25 Schoenherr G M B H Weblade für mechanische Webstühle
DE1780195A1 (de) * 1968-08-14 1971-07-29 Bendix Corp Scheibenbremse

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161787A (en) * 1938-04-18 1939-06-13 Crompton & Knowles Loom Works Backstay for loom reeds
GB589105A (en) * 1944-03-08 1947-06-11 Saurer Ag Adolph Improvements in or relating to reed-supporting means for looms
US2529456A (en) * 1946-10-24 1950-11-07 Draper Corp Loom lay and beam
US2489978A (en) * 1947-02-18 1949-11-29 Draper Corp Loom reed support
US2524670A (en) * 1949-04-01 1950-10-03 Crompton & Knowles Loom Works Reed beatup mounting for loom lays
US2817369A (en) * 1955-08-25 1957-12-24 Crompton & Knowles Loom Works Convertible lay for loom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373773A (en) * 1965-07-12 1968-03-19 George H. Balentine Jr. Loom

Also Published As

Publication number Publication date
DE1535351B1 (de) 1972-02-03
CH401856A (de) 1965-10-31

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