US1939092A - Knock over bit for knitting machines - Google Patents

Knock over bit for knitting machines Download PDF

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Publication number
US1939092A
US1939092A US506859A US50685931A US1939092A US 1939092 A US1939092 A US 1939092A US 506859 A US506859 A US 506859A US 50685931 A US50685931 A US 50685931A US 1939092 A US1939092 A US 1939092A
Authority
US
United States
Prior art keywords
bit
knock
over bit
knitting machines
lamina
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
US506859A
Other languages
English (en)
Inventor
Welffens Emile John
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.)
HARCOWO SA
Original Assignee
HARCOWO SA
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 HARCOWO SA filed Critical HARCOWO SA
Application granted granted Critical
Publication of US1939092A publication Critical patent/US1939092A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/10—Needle beds

Definitions

  • I provide a knock-over bit. for knitting machines having a relatively thick base or tail portion adapted to engage on each side with adjacent jacks when in the machine and a working head portion reduced in thickness so as to give the necessary clearance for the needles.
  • the working head of the knock-over bit is preferably of a depth somewhat greater than is usual and is preferably specially shaped so that it can perform the several functions enumerated above.
  • a slot is provided for guiding and retaining the warp thread.
  • the knock-over bit may be constructed from a single piece of metal or it may be built up of several pieces which may be secured together in any desired manner.
  • Figures 1, 2 and 3 are side elevations of portions of a built up knock-over bit embodying the present invention.
  • the bit is a built up structure consisting of five laminae.
  • A'central lamina or distance piece 2 extends throughout the whole length of the bit and two laminae 1 of steel which are shaped at their upper portions to form the working head 4 of the bit are disposed one on each side of the central distance piece 2.
  • two outer laminae or distance pieces 3 On either side of the composite structure made up of these three pieces are two outer laminae or distance pieces 3, which do not extend all the way to the top of the bit but terminate short of the working head 4 so as to allow clearance for the needles between the working heads of consecutive bits.
  • the three distance pieces 2 and 3, 3 may be made of any suitable material such for example as steel or hard brass.
  • the five ,pieces which together constitute the knock-over bit aresecured togetherin any suitable manner such for example as by: riveting, welding, soldering or sweating.
  • holesor slots 5 and 6 are provided in the distance pieces 2 and 3 respectively. These holes or slots are filled with solder and then the five pieces are put together and heated whilst being pressed together, so that the solder flows and effectively binds the pieces together.
  • the tail portion '7 .of the extension slopes in a gradual convex curve backwards and downwards towards the front vertical edge 12 of the part 8. Where the lower edge ll joins the front vertical edge 12 is a recess or slot 13.
  • the bits may be secured to the needle bed in any desired manner such as by means of clamping plates which grip the tails of the bits either directly or through suitably interposed packing.
  • the clamping plates are preferably shaped and arranged so that as they are tightened they tend to force the tails of the bits into engagement with two locating surfaces at right angles to one another.
  • a step 14 is formed in the rear edge of the bit to assist positioning.
  • Each clamping plate is adapted to retain a number of bits in position the'number r varying according to the gauge of the machine and therefore the width of the bits.
  • a knock-over bit for knitting machines comprising two laminae spaced apart by a central lamina and shaped at the top to form a working head having a forward extension and a recess at the base of said extension for retaining the threads below the needles after a stitch, and two outer lamina which terminate belowthe working head, a step being provided in the rear edge of the jack to assist in positioning in the machine, all of said lamina being united into a unitary structure.
  • a composite knock-over bit for knitting machines comprising two lamina spaced apart by a. central lamina and shaped at the top to form a working head having a forward extension and a recess at the base ofsaid'extension for retaining the threads below the needles after a stitch and two outer' lamina which terminate below the working head a step being provided in the rear of the jack to assist in positioning in the machine and the working head being shaped for retaining a warp thread midway between two adjacent needles when the bit is in the machine,
  • a composite knock-over bit for knitting machines comprising two lamina spaced apart by a centrallamina and shaped at the top to form a working head having a forward extension and a recess at'the base of said extension for'retaining the threads below the needles after a stitch and two outer lamina which terminate below the working head and serve as active supports for the sliding needles when the bit is in the machine,

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US506859A 1930-01-28 1931-01-06 Knock over bit for knitting machines Expired - Lifetime US1939092A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1939092X 1930-01-28

Publications (1)

Publication Number Publication Date
US1939092A true US1939092A (en) 1933-12-12

Family

ID=10894118

Family Applications (1)

Application Number Title Priority Date Filing Date
US506859A Expired - Lifetime US1939092A (en) 1930-01-28 1931-01-06 Knock over bit for knitting machines

Country Status (3)

Country Link
US (1) US1939092A (de)
DE (1) DE576212C (de)
FR (1) FR709995A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508209A (en) * 1945-10-15 1950-05-16 Vanity Fair Mills Inc Knitting machine and method
US2682163A (en) * 1949-11-17 1954-06-29 Aaron S Staff Trick plate
US5209083A (en) * 1990-02-07 1993-05-11 Shima Seiki Mfg., Ltd. Flat knitting machine having function for adjusting knock-over timing
US11313058B2 (en) * 2019-02-27 2022-04-26 Pai Lung Machinery Mill Co., Ltd. Flat knitting machine structure with adjustable gap between two knock-over bits

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508209A (en) * 1945-10-15 1950-05-16 Vanity Fair Mills Inc Knitting machine and method
US2682163A (en) * 1949-11-17 1954-06-29 Aaron S Staff Trick plate
US5209083A (en) * 1990-02-07 1993-05-11 Shima Seiki Mfg., Ltd. Flat knitting machine having function for adjusting knock-over timing
US11313058B2 (en) * 2019-02-27 2022-04-26 Pai Lung Machinery Mill Co., Ltd. Flat knitting machine structure with adjustable gap between two knock-over bits

Also Published As

Publication number Publication date
DE576212C (de) 1933-05-08
FR709995A (fr) 1931-08-17

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