US3766754A - Switchable lock for knitting machines - Google Patents

Switchable lock for knitting machines Download PDF

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Publication number
US3766754A
US3766754A US00191638A US3766754DA US3766754A US 3766754 A US3766754 A US 3766754A US 00191638 A US00191638 A US 00191638A US 3766754D A US3766754D A US 3766754DA US 3766754 A US3766754 A US 3766754A
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US
United States
Prior art keywords
cam
switchable
parts
cam parts
arrangements according
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
US00191638A
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English (en)
Inventor
H Schieber
E Krause
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.)
Henkel Dorus GmbH and Co KG
Original Assignee
Dr Rudolf Schieber GmbH and Co KG
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
Priority claimed from DE19712111789 external-priority patent/DE2111789C3/de
Application filed by Dr Rudolf Schieber GmbH and Co KG filed Critical Dr Rudolf Schieber GmbH and Co KG
Application granted granted Critical
Publication of US3766754A publication Critical patent/US3766754A/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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/327—Cam systems or assemblies for operating knitting instruments for stitch-length regulation

Definitions

  • ABSTRACT Cams in knitting machines are movable between operative and inoperative positions and are biased as by springs toward one position and are held in the other position against the spring bias by a detent engaging latching bolt controlled by an electromagnet and movable along a path perpendicular to the direction of cam movement.
  • This invention relates to switchable cam locks for knitting machines.
  • the invention is particularly suited to flat knitting machines wherein the selection and fixing of the positions of various cam parts is obtained by mechanical adjustment of individual cam parts and the holding of these parts by electromagnets in their adjusted position.
  • the cam arrangement of the present invention utilizes a'detent engaging bolt which is movable into and out of a detent groove in a direction perpendicular to the direction of movement of the cam parts.
  • the movement of thecam parts is obtained in one embodiment by means of pivotal switch levers, one end of which is acted on by a cam.
  • the movement of the cam parts is obtained by other cams which are guided directly into engagement with the cam parts.
  • all of the cam parts including in particular the needle sinkers together with their displacement devices, are supported under spring action in a direction vertical to the needle butts.
  • all of the cam parts including those which are normally mounted fixed in position, can be raised by associated mechanical switching devices, whereupon they may or may not be individually held selectively by the locking devices corresponding to the performance intended.
  • each electromagnet of the locking device may suitably be provided with a spring-actuated detent bolt.
  • the switchable cam arrangement of the invention is preferably constructed in the manner that the cam parts comprise plates arranged on guide bolts. In this case, the detent bolts then engage into detent grooves in the guide bolts of the cam parts.
  • This construction has the advantage that only the guide bolts and not the more complicatedly-shaped cam or lock part itself need be directly guided.
  • cam parts can be raised into their operating position by springs and be removed from the operating position by cams.
  • FIG. 2 is a-view similar to FIG. 1 and'showing the cam lift lever in its lowered position;
  • FIG. 3 is an edge view of a portion of a knitting machine needle bed having the switchable cam arrangements of the present invention (partially broken away) mounted thereabove;
  • FIG. 4 is a top view on an enlarged scale of the arrangements shown in FIG. 3;
  • FIG. 5 is an enlarged fragmentary viewof one portion of the cam arrangement of FIG. 3; and 1 FIG. 6 is a top view of the arrangement shown in F IG'.
  • FIGS. 1 and 2 a knitting machine cam is actuated via a switch lever from associated lever cams.
  • a lower needle raiser l and an upper needle raiser 2 are fasthe-spirit.
  • Each of the guide bolts 3 and 4 has one or more detent grooves 15 and 16 into which spring-loaded detent bolts 17 and 18, actuated by corresponding electromagnets 19 and 20, respectively, can engage.
  • the direction of movement of the spring-loaded detent bolts 17 and 18 is perpendicular to the direction of movement of the guide bolts 3 and 4.
  • FIG. 1 there is shown an operating position of the device in which the electromagnet 20 has attracted and has brought the detent bolt 18 into engagement with the detent groove 16 of the guide bolt 4.
  • the electromagnet 19, on the other hand, is not connected and the detent bolt 17 is, therefore, not in engagement with the detent groove 15 of the guide bolt 3.
  • a lock part 21 is firmly connected with the guide plate 14.
  • FIG. 2 the device is shown in an operating position with the lever arm 11 of the switch lever 9, having been moved downwardly by the cam 12 on the sides of the knitting machine. In this position, the lever arm has freed the pins 7 and 8 for downward movement.
  • the guide bolt 3 is pulled, in FIG. 2, by its corresponding spring 5 until a limiting collar 22 abuts against the guide plate 13. The downward movement of the guide bolt 3 is thus limited by the limiting collar 22.
  • the lower needle raiser 1 is thus moved to its operative position.
  • the guide bolt 4 which has a limiting collar 23 corresponding to the limiting collar 22, is held fast by the detent bolt 18 of the actuated electromagnet 20 which engages into the detent groove 16 to hold the guide bolt upwardly with its needle raiser 2 in a rest position.
  • the electromagnets 19 and 20 can be very small since they merely have to move the small detent bolts 17 and 18, respectively, in a direction perpendicular to the direction of movement of the guide bolts 3. and 4.
  • FIGS. 3 to 6 there is shown an embodiment-of the lock of the invention in which earns 24 and 25 are fastened directly on the needle bed 26 of the knitting machine.
  • transmission members such as the switch levers 9 of FIGS. 1 and 2 and the like, which are very difficult to arrange in the carriage of the knitting machine, are avoided.
  • FIG. 3 shows a portion of the knitting machine, seen from the bottom of the needle bed.
  • FIG. 4 is a top view of the apparatus of FIG. 3, the guide plate 14 being indicated merely in dash-dot line for the purposes of easier readability of the figure, while the cam parts are shown in solid lines.
  • the mounts for various electromagnets 19, 19a, 20, 20a, 32 are shown in solid lines.
  • a cam part 27 is supported by A spring action on two guide bolts 28 and 29 so that it can move away upon passing over the cams 24 and 25, respectively.
  • cam parts 21 and 210 are mounted in fixed position, because they are not acted on by either of the two cams 24 and 25, respectively.
  • Needle lowerers 30, 31, 30a and 31a are supported under spring action together with their adjustment devices 33, 38, 33a and 38a, respectively, on corresponding guide bolts 34, 35, 36, 37, 34a, 35a, 36a and 37a, respectively.
  • FIG. 5 shows an enlarged portion of the cam device of FIG. 3 in an operating position in which the cam device has moved onto the cam 24.
  • the needle lowerers 30 and the needle raisers 1 and 2 have been forced upward by an inclined surface 39 of the cam 24.
  • FIG. 6 shows the various elements of the cam arrangement of FIG. 5 in top view.
  • various ones of the cam holding electromagnets 19, 20 and 32 are energized or deenergized by the control device of the machine so that, as the cams move across the needle bed, the successive positions of the needle cams will be determined.
  • Switchable cam lock arrangements for knitting machines in which the selection and establishing of the positions of cam parts takes place by mechanical displacement of individual cam parts and wherein the cam parts are held in these positions by electromagnets, said arrangements comprising means for moving said cam parts against a bias force to given positions, and locking devices for holding said cam parts in said given positions, said locking devices being actuated by separate electromagnets said locking devices including a detent bolt movable along a path in a direction perpendicular to the direction of movement of the cam parts into and out from a detent groove on said cam parts.
  • Switchable cam lock arrangements according to claim 1 wherein the means for moving the cam parts comprises further cam means fixed on the knitting machine to be engaged directly by the cam parts.
  • each electromagnet is provided with a spring-actuated detent bolt.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00191638A 1971-03-11 1971-10-22 Switchable lock for knitting machines Expired - Lifetime US3766754A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712111789 DE2111789C3 (de) 1971-03-11 Flachstrickmaschine

Publications (1)

Publication Number Publication Date
US3766754A true US3766754A (en) 1973-10-23

Family

ID=5801256

Family Applications (1)

Application Number Title Priority Date Filing Date
US00191638A Expired - Lifetime US3766754A (en) 1971-03-11 1971-10-22 Switchable lock for knitting machines

Country Status (6)

Country Link
US (1) US3766754A (cs)
JP (1) JPS5329802Y2 (cs)
CS (1) CS152254B2 (cs)
FR (1) FR2129543A5 (cs)
GB (1) GB1388891A (cs)
IT (1) IT953383B (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004437A (en) * 1975-04-09 1977-01-25 Universal Maschinenfabrik Dr. Rudolf Schieber Kg Flat knitting machine
US5212968A (en) * 1990-07-04 1993-05-25 Shima Seiki Mfg., Ltd. Presser controller of a carriage in a flat knitting machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH671977A5 (cs) * 1986-12-01 1989-10-13 Dubied & Cie Sa E
CN103215740A (zh) * 2013-05-23 2013-07-24 施纯清 翻针三角

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1571765A (en) * 1920-07-08 1926-02-02 Max Nydegger Pattern-change mechanism for knitting machines
US3229482A (en) * 1963-04-10 1966-01-18 Wildt Mellor Bromley Ltd Patterning mechanism for knitting machines
US3232079A (en) * 1962-12-24 1966-02-01 Southern Mill Equipment Corp Circular knitting machine
US3340708A (en) * 1963-02-15 1967-09-12 Schieber Universal Maschf Knitting machine with electromagnetic needle selection mechanism
DE1435132A1 (de) * 1959-10-20 1968-10-24 Walter Boeniger Handstrickmaschine
DE1435161A1 (de) * 1960-12-30 1968-10-24 Manta Sa Aushebevorrichtung fuer elektrisch-magnetische Schaltvorgaenge an Flachstrickmaschinen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1571765A (en) * 1920-07-08 1926-02-02 Max Nydegger Pattern-change mechanism for knitting machines
DE1435132A1 (de) * 1959-10-20 1968-10-24 Walter Boeniger Handstrickmaschine
DE1435161A1 (de) * 1960-12-30 1968-10-24 Manta Sa Aushebevorrichtung fuer elektrisch-magnetische Schaltvorgaenge an Flachstrickmaschinen
US3232079A (en) * 1962-12-24 1966-02-01 Southern Mill Equipment Corp Circular knitting machine
US3340708A (en) * 1963-02-15 1967-09-12 Schieber Universal Maschf Knitting machine with electromagnetic needle selection mechanism
US3229482A (en) * 1963-04-10 1966-01-18 Wildt Mellor Bromley Ltd Patterning mechanism for knitting machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004437A (en) * 1975-04-09 1977-01-25 Universal Maschinenfabrik Dr. Rudolf Schieber Kg Flat knitting machine
US5212968A (en) * 1990-07-04 1993-05-25 Shima Seiki Mfg., Ltd. Presser controller of a carriage in a flat knitting machine

Also Published As

Publication number Publication date
DE2111789B2 (de) 1976-05-13
JPS5329802Y2 (cs) 1978-07-25
FR2129543A5 (cs) 1972-10-27
JPS52128757U (cs) 1977-09-30
DE2111789A1 (de) 1972-09-21
CS152254B2 (cs) 1973-12-19
GB1388891A (en) 1975-03-26
IT953383B (it) 1973-08-10

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