US3664382A - Loom picker - Google Patents

Loom picker Download PDF

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Publication number
US3664382A
US3664382A US89331A US3664382DA US3664382A US 3664382 A US3664382 A US 3664382A US 89331 A US89331 A US 89331A US 3664382D A US3664382D A US 3664382DA US 3664382 A US3664382 A US 3664382A
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US
United States
Prior art keywords
insert
picker
cavity
shuttle
face
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
US89331A
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English (en)
Inventor
Mayo B Tell
Donald D Kidd
William T Wickham
Frank Brown
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.)
Day International Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3664382A publication Critical patent/US3664382A/en
Assigned to DAYCO CORPORATION reassignment DAYCO CORPORATION CERTIFICATE BY THE SECRETARY OF STATE OF MICHIGAN SHOWING MERGER OF COMPANIES, AND CHANGE OF NAME OF THE SURVIVING CORPORATION. Assignors: DAYCO CORPORATION (MERGED INTO), DAYCO CORPORATION OF MICHIGAN (CHANGED TO)
Assigned to DAY INTERNATIONAL CORPORATION reassignment DAY INTERNATIONAL CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: DAYCO CORPORATION
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
    • D03D49/24—Mechanisms for inserting shuttle in shed
    • D03D49/26—Picking mechanisms, e.g. for propelling gripper shuttles or dummy shuttles
    • D03D49/36—Pickers; Arresting means therefor

Definitions

  • This invention refers to loom pickers which are used for driving shuttles across the loom during the weaving operation.
  • weft threads are laid transversely of the warp threads by the use of a shuttle which is struck by the picker to drive it back and forth.
  • the high speed of modern looms creates a high impact on the picker which causes rapid wear, thus necessitating frequency replacement of the picker.
  • a novel picker which combines a resilient body, such as urethane, and a removable wear-resistant shuttle-contacting insert, harder than the body, preferably made of high molecular weight polyethylene. Simplified installation and removal of the insert is accomplished by providing a threaded configuration on the insert and a threaded configuration in the cavity in the face of the body, so that the insert may be easily installed in and removed from the body. When the insert, therefore, has become worn because of the repeated impacts, it is a simple matter to remove this insert and install a new one.
  • the novel concept resides in the relationship of the threaded insert and the threaded cavity of the body since this permits a high degree of energy absorption. By transmitting the shock of the shuttle through the insert and through the surface of the threads of the insert into the threads of the body, a much larger area of energy absorption exists than is found by the arrangements of the prior art.
  • the threads may be designed with slightly dissimilar configurations. The slight mismatching will not prevent insertion of the insert in the cavity, but will help to lock the insert in place.
  • FIG. 1 is a perspective view of the novel picker mounted on the picker stick.
  • FIG. 2 is a cross-sectional view of the picker taken along line 2--2 of FIG. 1.
  • FIG. 3 is a cross-sectional view of a modified form of picker with the inert shown as disassembled.
  • FIGS. 1 and 2 illustrate a typical arrangement of a picker 1 I mounted on a picker stick 12 which passes through an opening 14 extending through the upper and lower surfaces of the picker.
  • the body of the picker is designated by reference nu meral 13 and has a shuttle-contacting insert 15 which is located within a cavity.
  • a conical recess 16 in the face of the insert contacts the shuttle during motion and helps to seat the shuttle within the insert.
  • a slit 17 extends partially across the shuttle-contacting face of the insert for purposes to be described below.
  • the body of the picker is made of an elastomeric material which is resilient in order to provide long life and shock absorption.
  • a preferred material is urethane which may be cast or injection molded.
  • a cavity 19, which has a threaded configuration, extends from the outer face of the body to a wall 21 which is short of the picker stick opening 14, this wall defining the inner end of the cavity.
  • the insert 15 is a cylindrical member also having a threaded configuration 18 approximately matching the configuration of the cavity.
  • This insert is made of a highly wear-resistant material, preferably high molecular weight polyethylene, which is harder than the material of the body and which thus withstands the impact of the picker for long periods of time.
  • the shuttle-contacting face of the insert is flush with the shuttle-contacting face of the body, while the inner face 20 of the insert contacts the cavity wall 21.
  • the full contact of the insert in the cavity through the threaded portions and through the walls provides for maximum energy absorption so that the shuttle impact is passed through the insert and into the body.
  • the insert is easily installed into the cavity, and to simplify the installation the slit 17 may be utilized in the same manner, as the slit in the head of a screw.
  • the insert may be removed by the same expedient and a new one installed. The eliminates the need for replacing the entire picker.
  • the configuration of the threads on the insert and I in the cavity may be slightly dissimilar, so that the mismatch helps lock the insert in place.
  • the dissimilarity may be in the pitch or in the angle of the threads, and may be created by several methods. For example, if both the body and insert are completely molded the same theoretical mold dimensions may be utilized; but because shrinkage is different for each of the materials used, the desired mismatch is created. It is also possible to form the threads on the insert by a screw machine or similar mechanism, and thereby select the desired pitchor angle to create the desired variation from the pitch or angle of the cavity threads.
  • FIG. 3 illustrates another form of the invention utilizing the identical body 13 having a picker stick opening 14, an internally threaded cavity 19, and a wall 21 which terminates the cavity short of the picker stick opening.
  • the insert 25 consists of a cylindrical threaded member 28 similar to the threaded member 18 of the principal form of the invention, and has an inner face 29 which is adapted to be placed against the wall 21.
  • the insert has an additional boss 26 extending beyond the outer face of the body and has the same conical opening as the insert 15.
  • slit 27 in the shuttle-contacting face of the insert is utilized to assist in the installation and removal of the insert.
  • the additional mass of this boss 26 provides extra energy absorption during the operation.
  • the boss may also have a conical recess similar to the recess 16, in order to improve contact with the shuttle.
  • a loom picker comprising a body of resilient elastomeric material and having a picker stick opening passing through the upper and lower surfaces thereof, a cavity having a threaded configuration and extending from an outer face to a wall short of said opening, and a wear-resistant insert made of harder material than said body and having a shuttle-contacting faceand an inner face, said insert also having a threaded configuration which is slightly dissimilar from the threaded configuration of said cavity and being mounted in said cavity.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
US89331A 1970-11-13 1970-11-13 Loom picker Expired - Lifetime US3664382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8933170A 1970-11-13 1970-11-13

Publications (1)

Publication Number Publication Date
US3664382A true US3664382A (en) 1972-05-23

Family

ID=22217078

Family Applications (1)

Application Number Title Priority Date Filing Date
US89331A Expired - Lifetime US3664382A (en) 1970-11-13 1970-11-13 Loom picker

Country Status (8)

Country Link
US (1) US3664382A (enrdf_load_stackoverflow)
BE (1) BE775233A (enrdf_load_stackoverflow)
CA (1) CA932619A (enrdf_load_stackoverflow)
DE (1) DE2155022A1 (enrdf_load_stackoverflow)
FR (1) FR2113926B1 (enrdf_load_stackoverflow)
GB (1) GB1309878A (enrdf_load_stackoverflow)
IT (1) IT939186B (enrdf_load_stackoverflow)
NL (1) NL7115578A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117179A (en) * 1976-11-04 1978-09-26 General Electric Company Oxidation corrosion resistant superalloys and coatings
WO2018213986A1 (zh) * 2017-05-22 2018-11-29 姚红军 一种长寿命投梭节

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB253264A (en) * 1925-03-31 1926-06-17 George Spencer Moulton & Co Improvements in pickers for looms
US3020932A (en) * 1960-02-19 1962-02-13 Rivera Jose Luis Herrerra Loom picker
US3229726A (en) * 1963-06-25 1966-01-18 Coyt E Murray Loom picker
US3302667A (en) * 1965-09-21 1967-02-07 Livermore Corp H F Picker-stick block for looms
CH474593A (de) * 1967-06-06 1969-06-30 Kenk Theo Picker für Webstühle
US3507304A (en) * 1967-05-17 1970-04-21 Haag Kg Albert Picker

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB253264A (en) * 1925-03-31 1926-06-17 George Spencer Moulton & Co Improvements in pickers for looms
US3020932A (en) * 1960-02-19 1962-02-13 Rivera Jose Luis Herrerra Loom picker
US3229726A (en) * 1963-06-25 1966-01-18 Coyt E Murray Loom picker
US3302667A (en) * 1965-09-21 1967-02-07 Livermore Corp H F Picker-stick block for looms
US3507304A (en) * 1967-05-17 1970-04-21 Haag Kg Albert Picker
CH474593A (de) * 1967-06-06 1969-06-30 Kenk Theo Picker für Webstühle

Also Published As

Publication number Publication date
BE775233A (fr) 1972-03-01
NL7115578A (enrdf_load_stackoverflow) 1972-05-16
DE2155022A1 (de) 1972-05-31
GB1309878A (en) 1973-03-14
CA932619A (en) 1973-08-28
FR2113926B1 (enrdf_load_stackoverflow) 1976-02-13
FR2113926A1 (enrdf_load_stackoverflow) 1972-06-30
IT939186B (it) 1973-02-10

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DAYCO CORPORATION, OHIO

Free format text: CERTIFICATE BY THE SECRETARY OF STATE OF MICHIGAN SHOWING MERGER OF COMPANIES, AND CHANGE OF NAME OF THE SURVIVING CORPORATION;ASSIGNORS:DAYCO CORPORATION (MERGED INTO);DAYCO CORPORATION OF MICHIGAN (CHANGED TO);REEL/FRAME:004122/0274

Effective date: 19820909

Owner name: DAYCO CORPORATION

Free format text: CERTIFICATE BY THE SECRETARY OF STATE OF MICHIGAN SHOWING MERGER OF COMPANIES, AND CHANGE OF NAME OF THE SURVIVING CORPORATION.;ASSIGNORS:DAYCO CORPORATION A DE CORP. (MERGED INTO);DAYCO CORPORATION OF MICHIGAN, A MI CORP. (CHANGED TO);REEL/FRAME:004122/0274

Effective date: 19820909

AS Assignment

Owner name: DAY INTERNATIONAL CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:DAYCO CORPORATION;REEL/FRAME:004697/0849

Effective date: 19870316

STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)