US3774413A - Mechanical switching and ratchet arrangement for mutually-exclusive functions - Google Patents

Mechanical switching and ratchet arrangement for mutually-exclusive functions Download PDF

Info

Publication number
US3774413A
US3774413A US00277119A US3774413DA US3774413A US 3774413 A US3774413 A US 3774413A US 00277119 A US00277119 A US 00277119A US 3774413D A US3774413D A US 3774413DA US 3774413 A US3774413 A US 3774413A
Authority
US
United States
Prior art keywords
jack
selector
switch
jacks
rest position
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
US00277119A
Other languages
English (en)
Inventor
W Kemmler
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.)
H Stoll GmbH and Co KG
Original Assignee
H Stoll 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
Application filed by H Stoll GmbH and Co KG filed Critical H Stoll GmbH and Co KG
Application granted granted Critical
Publication of US3774413A publication Critical patent/US3774413A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D04B15/12—Shogging devices therefor

Definitions

  • ABSTRACT A mechanical switching and ratchet device of the type for carrying out mutually exclusive functions, for example for selective needle bed shogging on flat knitting machines.
  • a plurality of selector jacks are longitudinally slidable on a jack guide and each has associated with it a switch jack.
  • a ball blocking device permits any one, but only one of the selector jacks to be moved longitudinally at any given time.
  • When a selector jack is moved it carries with it its switch jack which switch jack remains in the moved position even though its selector jack then moves back to its original position.
  • a locking pawl is provided for holding the switch jacks in the original or the moved positions thereof.
  • the needle bed shogs determining stitch formation and% patterning intmany cases take place through the medium of switching jacks, which are individually selectedfrom a set of selector jacks by a patterning device, i.e. are brought fromtherest position into the operativeactivepositiom
  • the switching jacks-draw. on: switch levers or abutments which determine the longitudi'nali than twice the thickness of one selector jack.
  • the switch jack associated with each selector jack is so arranged relative thereto that when the selector jack moves from its rest position to its active position, it carries its respective switch jack with it. The switch jack is then held in this active position while the selector jack is permitted to move back to its rest position.
  • the switch jacks include front and rear abutments which cooperate with front and rear ratchet tips on a locking pawl which-is urged against all of said switchljacks; The ratchet tips and the abutrnents are so extent of needlebed shog.
  • switching malfunctions could. not:v be: avoided; due
  • a plurality of selector jacks 'arer provided for longitudinal movement on a jack-guide,' there being tza. switch jack; associated with eachhselectorzjackt Each" said switch jack is arranged 'adjacentztoand slidablevlongitudinally with its respective selector jack. lnflthe.
  • aball block? ing arrangement may be provided which includes a plu-- rality of balls,- one located in, a -hole vofeach selector jack; the balls being aligned "transversely ofsaid longia 6 tudinal direction and the aggregate: space between the balls taken insaid transverse. direction being greater: than. the thicknesstof one selector 'jack but not greater r ment is'such' that the switchjjackrisrthen held in its activ 9 rently' holidzany one of the switch jacks in'an active position-.and concurrently hold the remainder of the switch jacks in: the rest position;
  • A'jack guide 1 would normally be mounted upon and fiXedito the frame-of a'flat knittingmachine.
  • the selector jacks 2 are longitudinallyslidable on thejack guide '1 and each has associated therewith a switch -jacki6 als'o longitudinally-slidable on 'the jack' guide" I.
  • the illustrated draw cables of the selector jacks areconnectedto theselector device and the illustrated clrawcables of theswitching jacks are connected to the switching device of th'e knitting machine;
  • jacks are held in place on (the jack guide-by suitable plates'3,4and 5, the jackguide 1 havingfonned therein a plurality of slots for receivingthe jacks-2 and fiifor longitudinal movementtherein. Theseslots are visible in' FIG. 5.
  • the plates 3, 4'and 5 also serve as stops for thejacks 2 and 6: Specifically, the plates 3 and Sf aet :as -rearward "(rightward inthe figures) stops for taken along;
  • a ball is provided in an opening of each selector jack, the balls being transversely aligned.
  • the aggregate transverse space between the balls is such that when one selector is moved to the right to its active position, the balls will prevent any other selector jacks from moving to the active position.
  • Each switch jack 6 has formed on its upper surface a pair of abutments 11 and 12. In a manner to be described below, these abutments cooperate with tips 9 and on a pawl 7 which is urged resiliently downwardly against the upper surface of all switch jacks 6 by means of spring 14. I i
  • the switching ratchet and device of the present invention operates as follows. Upon a given command, for example from a programme control, a selector jack such as the selecto jack 2 will be drawn to theselector by its draw cable. After it has moved to the left, the ball block 8 will prevent any other selector jack from moving to the left.
  • the selector jack 2' carries along with it in the longitudinal direction its associated switch jack 6' until one of two active positions have been reached. In the first position the switch jack is pulled only until abutment 12 moves to the left of tip 10, at which time the tip 10 prevents rightward movement of switch jack 1. In the second position which is illustrated in FIG.
  • the tip 9 on the spring loaded pawl 7 will lie adjacent abutment l 1 so as to prevent movement to the right of the switch jack 6.
  • the switching jack adjusts an appropriate lever or abutment (not shown) via its draw cable.
  • the tip 10 was positioned just forward of the rear abutment 12 on the jack 6' holding this switch jack in its original rest position. Now, as the selected switch jack 6' is located to the left, the tip 10 still engages the abutments 12 of the remaining switch jacks so as to hold them in their original, rest position.
  • the elements will remain-'in'sthe active position until it is desired to select another function; For example, if the first position of the switch jack 6' hasbeen selected; the switch jack 6 will remain with its abutment 12 immediately forward of and restrained by pawl tip 10 and the selector jack 2' will be in the position, illustrated in FIG. 4. If however the second position of the switching jack 6' has been selected, the element 6',as; well as 2! will remain in the position as shown in FIG. 4 until it is desired to select another function. Since the selector jack 2 is back in its original, rest position, it is available to be selected during the nex tlfunction along with any of the other selector jacks.
  • the switch jack 6. had been in the first or partial position, then in this case the selector jack 2' will simply pick up the switch jack 6' partway along its travel and then carry it the rest of the way to the FIG. 3 position, after which the selector jack 2 will return to its original position, as described above.
  • a selector jack other than 2 If, however, during this subsequent selection, a selector jack other than 2 is chosen, then it will pull out wardly to the left its respective switch jack 6. This new switch jack moving to the left will raise the pawl 7 during which time the original switch jack 6 will be released therefrom and be urged back to its rest position under the action of a spring (not shown). The pawl 7 will then return to its downward position under the force of spring 14 holding the newly selected switch jack 6 in its active operative position by engagement of the appropriate tip and abutment.
  • a mechanical switching and ratchet device of the type for carrying out mutually exclusive functions such as for selective needle bed shogging on knitting machines, in particular on flat knitting machines comprising: a jack guide,.a plurality of generally parallel selector jacks mounted on said jack guide for longitudinal movement thereon individually at least between a rest position and anv active position, a separate switch jack associated with each selector jack and generally parallel to its respective selector jack, each said switch jack also having a rest position and at least'one active position, eachselector jack including means for carrying its respective switch jack from the rest position to an active position thereof as that selector jack moves from its :rest position to its active position, means for holding a switch jack in saidactive position while permitting its respective selector jack to move back from its active position toitsrest position, and blocking means for permitting only one of said plurality of selector jacks at a time to move away from said rest position thereof.
  • said blocking means comprises a series of balls, each said selector jack having a hole therethrough greater than the diameter of the balls, one ball being located in the hole of each selector jack, the balls being arranged in a line transverse to said longitudinal direction, the aggregate space between the balls taken in the said transverse direction being greater than the thickness of one selector jack but less than the thickness of two selector jacks, such that the balls permit any one of the selector jacks tion.
  • said holding means comprising a pawl having a front tip and a rear tip, said to move from its rest position to its active position tips extending transversely across said longitudinal direction and spring biased against all of the switch jacks, each switch jack including a front and a rear abutment engageable with said tips, the rear tip positioned to engage the rear abutment of any switch jacks in the rest position to hold said switch jacks in said rest position, and each tip positioned to engage an abutment of any switch jack in an active position to hold that switch jack in an active position.
  • a flat knitting machine including means for selecting needles, said means including a mechanical switching and ratchet device to claim 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00277119A 1971-08-05 1972-08-01 Mechanical switching and ratchet arrangement for mutually-exclusive functions Expired - Lifetime US3774413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2139132A DE2139132A1 (de) 1971-08-05 1971-08-05 Mechanische schalt- und sperrvorrichtung fuer sich gegenseitig ausschliessende funktionen

Publications (1)

Publication Number Publication Date
US3774413A true US3774413A (en) 1973-11-27

Family

ID=5815813

Family Applications (1)

Application Number Title Priority Date Filing Date
US00277119A Expired - Lifetime US3774413A (en) 1971-08-05 1972-08-01 Mechanical switching and ratchet arrangement for mutually-exclusive functions

Country Status (7)

Country Link
US (1) US3774413A (es)
CH (1) CH535997A (es)
DE (1) DE2139132A1 (es)
ES (1) ES405837A1 (es)
FR (1) FR2148225A1 (es)
GB (1) GB1355602A (es)
IT (1) IT956900B (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4909048A (en) * 1988-04-22 1990-03-20 H. Stoll Gmbh & Co. Method for producing intarsia knitted goods and flat-bed knitting machine for implementing the method
CN102733061A (zh) * 2012-07-11 2012-10-17 江苏法诗菲服饰有限公司 一种横机用挑花板

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2012504A (en) * 1933-04-20 1935-08-27 Queens Machine Corp Racking mechanism for knitting machines
US2093858A (en) * 1935-02-19 1937-09-21 Queens Machine Corp Racking mechanism for knitting machines
US2110915A (en) * 1936-07-27 1938-03-15 Raymond S Nogler Knitting machine
US2284167A (en) * 1938-11-04 1942-05-26 Borg George W Corp Knitting machine
US2653460A (en) * 1945-09-13 1953-09-29 Zimic Knitting machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2012504A (en) * 1933-04-20 1935-08-27 Queens Machine Corp Racking mechanism for knitting machines
US2093858A (en) * 1935-02-19 1937-09-21 Queens Machine Corp Racking mechanism for knitting machines
US2110915A (en) * 1936-07-27 1938-03-15 Raymond S Nogler Knitting machine
US2284167A (en) * 1938-11-04 1942-05-26 Borg George W Corp Knitting machine
US2653460A (en) * 1945-09-13 1953-09-29 Zimic Knitting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4909048A (en) * 1988-04-22 1990-03-20 H. Stoll Gmbh & Co. Method for producing intarsia knitted goods and flat-bed knitting machine for implementing the method
CN102733061A (zh) * 2012-07-11 2012-10-17 江苏法诗菲服饰有限公司 一种横机用挑花板

Also Published As

Publication number Publication date
GB1355602A (en) 1974-06-05
FR2148225A1 (es) 1973-03-11
IT956900B (it) 1973-10-10
DE2139132A1 (de) 1973-02-15
CH535997A (de) 1973-04-15
ES405837A1 (es) 1976-05-16

Similar Documents

Publication Publication Date Title
US3232079A (en) Circular knitting machine
US3774413A (en) Mechanical switching and ratchet arrangement for mutually-exclusive functions
US3911700A (en) Flat knitting machine with yarn change mechanism
US1927016A (en) Knitting machine
US4414806A (en) Needle selection device for a knitting machine
GB891513A (en) Method and machine for knitting patterned fabrics
US4197722A (en) Knitting machine
GB1589373A (en) Pattern mechanisms for knitting machines
US2727373A (en) Knitting machine
US2444894A (en) Multiple selection pattern mechanism
US3108459A (en) Means for and method of operating circular knitting machines
US2310070A (en) Knitting machine and method
US4559791A (en) Flat knitting machine with selective needle selection
US3868650A (en) Readout device for fabric patterns for the formation of corresponding electric pulses, on hosiery machines
US3748873A (en) Carriage mechanism of a hand knitting apparatus
US2995910A (en) Needle selecting device
ES8101666A1 (es) Mecanismo selector de agujas para maquinas de genero de pun-to
US3568473A (en) Patterning mechanism for circular knitting machines
US3766754A (en) Switchable lock for knitting machines
GB2029867A (en) Single needle selection device for flat knitting machines
US3509735A (en) Selective transfer device for a circular knitting machine
KR840000018B1 (ko) 횡편기에 있어서의 선침방법
US3375681A (en) Flat bed knitting machines and method of knitting
US3141314A (en) Pattern control means for knitting machines
US2204629A (en) Flat knitting machine