US3868977A - Spring mounted removable scissors for looms - Google Patents

Spring mounted removable scissors for looms Download PDF

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Publication number
US3868977A
US3868977A US407009A US40700973A US3868977A US 3868977 A US3868977 A US 3868977A US 407009 A US407009 A US 407009A US 40700973 A US40700973 A US 40700973A US 3868977 A US3868977 A US 3868977A
Authority
US
United States
Prior art keywords
scissor
cam
weft
drive means
scissors
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
US407009A
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English (en)
Inventor
Maurice R Flamand
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
Rockwell International 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 Rockwell International Corp filed Critical Rockwell International Corp
Priority to US407009A priority Critical patent/US3868977A/en
Priority to DE19742445658 priority patent/DE2445658A1/de
Priority to IT53610/74A priority patent/IT1021851B/it
Priority to BE150105A priority patent/BE821737A/xx
Priority to FR7436913A priority patent/FR2250842B3/fr
Priority to JP49128870A priority patent/JPS5243944B2/ja
Priority to CH1509974A priority patent/CH587942A5/xx
Priority to BR9478/74A priority patent/BR7409478A/pt
Application granted granted Critical
Publication of US3868977A publication Critical patent/US3868977A/en
Assigned to DELTA ACQUISTION CORPORATION reassignment DELTA ACQUISTION CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ROCKWELL INTERNATIONAL CORPORATION
Assigned to DRAPER CORPORATION, reassignment DRAPER CORPORATION, CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE APRIL 1,1982 Assignors: DELTA ACQUISITION CORPORATION,
Assigned to CITICORP INDUSTRIAL CREDIT INC. reassignment CITICORP INDUSTRIAL CREDIT INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DRAPER CORPORATION F/K/A DELTA ACQUISITION CORPORATION
Assigned to STANCHART BUSINESS CREDIT, A CORP. OF CA. reassignment STANCHART BUSINESS CREDIT, A CORP. OF CA. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DRAPER CORPORATION
Assigned to DRAPER CORPORATION, A CORP. OF GEORGIA reassignment DRAPER CORPORATION, A CORP. OF GEORGIA RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CITICORP INDUSTRIAL CREDIT, INC.
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
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms

Definitions

  • ABSTRACT A weft yarn cutting assembly including linearly moveable drive means, cam means, scissor means have at least one moveable member for cooperation with the cam means and means connecting the drive means and the scissor means, the connecting means being yieldable in the direction normal to the direction of movement of the drive means.
  • the selvage is often left unfinished and cutters used to remove excess quantities of the free weft end.
  • the weft ends are removed by means of scissors which are operated in timed sequence with the reed beat up.
  • the scissors are commonly operated by suitable mechanical connections with a driving cam that is synchronized with operation of the loom reed and harness motions.
  • An additional object of this invention is to provide a readily changeable weft yarn cutting assembly which includes a resilient connecting means that permits scissors elements to be readily changed on the loom.
  • FIG. I is a side elevation, partly fragmentary, showing the yarn cutting assembly of this invention.
  • FIG. 2 is a side elevation of the camming plate used to operate the scissors mechanism, with part broken away;
  • FIG. 3 is a top elevation of the cutting assembly shown in FIG. 1;
  • FIG. 4 is a front perspective showing the manner in which the scissors means can be moved between an inner operating position and on outer position where it can be removed.
  • the cutting assembly comprises a drive means 11 which is mounted for reciprocating movement in a substantially rectilinear path.
  • Drive means 11 is shown as having a series of teeth 12 on one end which mate with an appropriate gear member 13 that is operably connected to a source of motive power.
  • the particular means by which drive means 11 is connected to its source of power is not relevant to the present invention and therefore need not be described in detail, as any appropriate connection means can be used.
  • cam means 15 mounted on the loom is a cam means 15 (see FIG. 2) that, in the modification shown, contains a pair of cam tracks 16.
  • Cam means 15 can be secured to the loom structure by suitable means such as bolts (not shown) that pass through the openings indicated by numeral 17 in FIG. 2.
  • a pair of scissor blades 18 and 19 which together define scissor means for effecting cutting of the free ends of the weft yarns.
  • Each of the blades 18 and 19 pivots about the pivot axis 20 and each blade also has a cam roller 21 which rides in the cam slots 16.
  • This weft cutting assembly further comprises means for connecting drive means 11 to the scissors means made up of blades 18 and 19.
  • This connecting means comprises a resilient member 25 which is connected at one end to drive means 11 by means of a threaded fastener indicated by numeral 26.
  • a threaded fastener indicated by numeral 26 At the other end of connector 25, there is a small rectangular plate 27 that is secured to the connecting means 25 by means of rivets 28.
  • rivets 28 also types of fasteners other than rivets could be used.
  • a small stub shaft 29 At the upper end of plate 27 is a small stub shaft 29 that defines the axis 20 of scissor rotation. This shaft is received into the opening 30, shown as provided through the cutting blades 18 and 19 in FIG. 4.
  • the connecting element 25 is substantially unyielding in the direction parallel to the direction of movement of drive means 11 but is yieldable in the direction normal to the direction of travel of drive means 11.
  • the connecting means 25 is in this case constructed in the form of a spring which has substantially greater width than thickness.
  • the drive means 11 is reciprocated in a substantially rectilinear path by the means of the gear member 13.
  • This reciprocating movement causes the scissor means to also reciprocate due to the fact that connecting means 25 is substantially unyielding in the direction corresponding to the width of means 25.
  • Reciprocal movement of means25 causes similar reciprocation of blades 18 and 19 (and the rest of the scissors assembly) through their connection with stub shaft 29.
  • the roller cams 2!. must follow the cam tracks 16 and this causes rotation of the blades 18 and 19 to perform their severing operation.
  • a weft cutting assembly for use on a shuttleless loom where weft yarn is drawn for a stationary source, said assembly comprising drive means connected to a source of motive power for reciprocating substantially rectilinear movement, cam means mounted on the 4 loom, scissor means including at least one movable member mounted for operative cooperation with said cam means, and means connecting said drive means to said scissor means, said connecting means including spring-like member of substantially greater width than thickness which is attached at one end to said drive means and at the other end to said scissor means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US407009A 1973-11-14 1973-11-14 Spring mounted removable scissors for looms Expired - Lifetime US3868977A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US407009A US3868977A (en) 1973-11-14 1973-11-14 Spring mounted removable scissors for looms
DE19742445658 DE2445658A1 (de) 1973-11-14 1974-09-25 Schussfaden-schneideinrichtung
IT53610/74A IT1021851B (it) 1973-11-14 1974-10-17 Perfezionamento nei complessi taglianti per telai tessili
BE150105A BE821737A (fr) 1973-11-14 1974-10-31 Ciseaux amovibles montes sur ressort pour metiers a tisser
FR7436913A FR2250842B3 (enrdf_load_stackoverflow) 1973-11-14 1974-11-07
JP49128870A JPS5243944B2 (enrdf_load_stackoverflow) 1973-11-14 1974-11-08
CH1509974A CH587942A5 (enrdf_load_stackoverflow) 1973-11-14 1974-11-12
BR9478/74A BR7409478A (pt) 1973-11-14 1974-11-12 Conjunto cortante aperfeicoado de fios de trama

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US407009A US3868977A (en) 1973-11-14 1973-11-14 Spring mounted removable scissors for looms

Publications (1)

Publication Number Publication Date
US3868977A true US3868977A (en) 1975-03-04

Family

ID=23610232

Family Applications (1)

Application Number Title Priority Date Filing Date
US407009A Expired - Lifetime US3868977A (en) 1973-11-14 1973-11-14 Spring mounted removable scissors for looms

Country Status (8)

Country Link
US (1) US3868977A (enrdf_load_stackoverflow)
JP (1) JPS5243944B2 (enrdf_load_stackoverflow)
BE (1) BE821737A (enrdf_load_stackoverflow)
BR (1) BR7409478A (enrdf_load_stackoverflow)
CH (1) CH587942A5 (enrdf_load_stackoverflow)
DE (1) DE2445658A1 (enrdf_load_stackoverflow)
FR (1) FR2250842B3 (enrdf_load_stackoverflow)
IT (1) IT1021851B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4554952A (en) * 1983-12-30 1985-11-26 Coleman Gerald E Severing apparatus for a loom

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5381761A (en) * 1976-12-24 1978-07-19 Tsudakoma Ind Co Ltd Method of and device for weft cutting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954056A (en) * 1958-10-22 1960-09-27 Warner Swasey Co Weaving machine
US3014504A (en) * 1957-10-30 1961-12-26 Sulzer Ag Demountable device in a loom for weaving
US3083738A (en) * 1958-06-27 1963-04-02 Sulzer Ag Forming a selvage on a fabric by bending projecting weft thread ends into the shed while the fabric is woven

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3014504A (en) * 1957-10-30 1961-12-26 Sulzer Ag Demountable device in a loom for weaving
US3083738A (en) * 1958-06-27 1963-04-02 Sulzer Ag Forming a selvage on a fabric by bending projecting weft thread ends into the shed while the fabric is woven
US2954056A (en) * 1958-10-22 1960-09-27 Warner Swasey Co Weaving machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4554952A (en) * 1983-12-30 1985-11-26 Coleman Gerald E Severing apparatus for a loom

Also Published As

Publication number Publication date
JPS5243944B2 (enrdf_load_stackoverflow) 1977-11-02
CH587942A5 (enrdf_load_stackoverflow) 1977-05-13
JPS5082364A (enrdf_load_stackoverflow) 1975-07-03
IT1021851B (it) 1978-02-20
DE2445658A1 (de) 1975-05-15
BE821737A (fr) 1975-02-17
FR2250842A1 (enrdf_load_stackoverflow) 1975-06-06
BR7409478A (pt) 1976-05-25
FR2250842B3 (enrdf_load_stackoverflow) 1977-08-05

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DRAPER CORPORATION,

Free format text: CHANGE OF NAME;ASSIGNOR:DELTA ACQUISITION CORPORATION,;REEL/FRAME:004097/0735

Effective date: 19820920

Owner name: DELTA ACQUISTION CORPORATION; HORNADAY RD., GREENS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ROCKWELL INTERNATIONAL CORPORATION;REEL/FRAME:004113/0020

Effective date: 19820321

AS Assignment

Owner name: CITICORP INDUSTRIAL CREDIT INC., A CORP. OF DE

Free format text: SECURITY INTEREST;ASSIGNOR:DRAPER CORPORATION A CORP. OF GA F/K/A DELTA ACQUISITION CORPORATION;REEL/FRAME:004070/0533

Effective date: 19821021

AS Assignment

Owner name: STANCHART BUSINESS CREDIT, 200 GALLERIA PARKWAY, N

Free format text: SECURITY INTEREST;ASSIGNOR:DRAPER CORPORATION;REEL/FRAME:004539/0198

Effective date: 19860328

AS Assignment

Owner name: DRAPER CORPORATION, GREENSBORO, NORTH CAROLINA A C

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITICORP INDUSTRIAL CREDIT, INC.;REEL/FRAME:004664/0583

Effective date: 19860331