US3730412A - Machine for cutting teeth on selector combs for drums and others for knitting machines - Google Patents

Machine for cutting teeth on selector combs for drums and others for knitting machines Download PDF

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Publication number
US3730412A
US3730412A US00142981A US3730412DA US3730412A US 3730412 A US3730412 A US 3730412A US 00142981 A US00142981 A US 00142981A US 3730412D A US3730412D A US 3730412DA US 3730412 A US3730412 A US 3730412A
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United States
Prior art keywords
card
program
grouped
portions
control element
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Expired - Lifetime
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US00142981A
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English (en)
Inventor
Guell J Dalmau
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Individual
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Individual
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B37/00—Auxiliary apparatus or devices for use with knitting machines
    • D04B37/02—Auxiliary apparatus or devices for use with knitting machines with weft knitting machines
    • D04B37/04—Auxiliary apparatus or devices for use with knitting machines with weft knitting machines for inserting or adjusting pattern pins or like elements in pattern drums or wheels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/371—Movable breaking tool

Definitions

  • the present invention relates to a machine for cutting or breaking off the butts or teeth from pattern elements or selector combs used in pattern drums and other mechanisms for knitting machines in order to mechanize this operation.
  • pattern elements or selector combs are fitted to rotating pattern drums and determine the activation of levers operating selector jacks which control the movement of needles in their operative phases. These combs must be previously prepared to remove certain of their teeth according to pattern cards prepared in accordance with the cloth pattern to be manufactured.
  • the apparatus in accordance with this invention allows for complete mechanization of the above operations, according to an improved process which surpasses all arrangements which have been adopted to date.
  • Said machine is characterized in that the breaking-off of the butts or teeth to be removed from a comb is performed by the action of a cutting instrument suitable for operating step by step for each tooth of the comb, there being between the comb and cutting instrument a relative displacement movement so that the cutting action is developed along said comb in accordance with a program card containing at certain points the respective indications for each type of cloth to be obtained, there being likewise a relative translation movement between said card and a indicator which successively indicates each point of said card, so that there is established a correspondence between said card points and the butts or teeth of the comb.
  • the magnitudes of the relative displacements per-' formed with reference to the card, on the one hand, and to the comb on the other hand, are of the proportional type.
  • the cutting instrument consists of a hammer which delivers impacts for breaking off the pertinent comb teeth, said hammer being of the rocker type and articulated to the moving armature of an electromagnet.
  • the combs are held in a clamp having a fixed jaw and a moving jaw, the latter being associated with pressing means consisting, a stop and, on the other hand, of a lever having a pressure cam. Guiding elements formed by transversal pins and separating elements formed by springs are transversely disposed between the two jaws.
  • the card indicating the teeth to be removed is placed on a rotary roller similar to those used on typewriter carriages, in order to advance successively the indications referring to each comb and so that each line of indications refers to one of the combs which are applied to a drum.
  • the machine may also be automated so that the use of punched cards, with respect to their indications,
  • FIG. 1 is a simplified diagrammatic side elevation of a machine for cutting teeth on selector combs according to the invention
  • FIG. 2 corresponds to a front elevation of the machine of the previous figure
  • FIG. 3 is a plan view of a comb holding clamp during the teeth cutting operation
  • FIG. 4 is a cross section taken along line IVIV of the previous figure
  • FIG. 5 is a cross section of one embodiment of the machine according to the invention.
  • a machine consists of a frame 1 having a roller 2, similar to that of a typewriter, with lateral knobs 3 for hand turning, the purpose of which is to hold and slide a card 4 containing squares which constitute the points where the indications 5 relating to the structure of a knitted cloth are arranged.
  • a clamp 6 formed by a fixed jaw 7A and a moving jaw 73, suitable for holding a comb 8, the teeth of which are to be cut as required.
  • the cutting of the teeth 9 is performed by a hammer 10 which delivers impacts at will, according to the indications 5 of the card 4 through the pertinent device.
  • the machine is controlled by a push button 11 controlling the step by step relative movement between the card 4 and the comb 8 and by a further push button 12 controlling the actions of the hammer 10.
  • a push button 11 controlling the step by step relative movement between the card 4 and the comb 8
  • a further push button 12 controlling the actions of the hammer 10.
  • relative movement between the comb 8 and the card 4 may occur automatically.
  • the relative positions of the card 4 and the comb 8 are marked or indicated by a pointer or indicator 13 which indicates the indications 5 one after the other by way of an upper limiting cover 13A and the angular portion 13B.
  • a magnifying glass 14 situated before such indication.
  • a collector chute l5 pouring them into a container 16 arranged for this purpose.
  • the jaws 7A and 78 have recesses 17 on their inner faces, in mutual correspondence, for housing guide pins 18 joined to one of said jaws. In other recesses 19 there are housed springs 20 which tend to separate the jaws to facilitate the introduction of the combs 8.
  • the moving jaw 78 has pressing means consisting of a screw 21 at one end acting as a stop and, at the opposite end, a lever 22 with a cam 23 to push the jaw into the comb 8 holding position.
  • the hammer 10 is mounted on a lever 24 which pivots about point 25 to form two arms, the end opposite said hammer 10 being pivotally mounted in turn at point 26 on the moving core 27 of an electromagnet 28.
  • This electromagnet is energized when the push button 12 is pressed to close the contacts of an electric circuit for this purpose, said contacts being contained in a casing 29.
  • a spring 30 mounted between a fixed anchorage point 31 and the lever 24 of the hammer tends to separate the latter from the comb 8 during the inoperative phases.
  • a further spring 32 dampens the backstrokes of the hammer 10.
  • a mechanical device automatically, or related with the push button 11, causes stepwise successive movement of the carriage 34 similar to the way of typewriters where a universal bar retracts a pawl from a rack bar so as to permit movement of a carriage under the force of a biasing means such as a spring (not shown in detail herein).
  • a biasing means such as a spring (not shown in detail herein).
  • the carriage 34 moves in its lengthwise direction and with it the elements mounted on it such as the clamp 6, the comb 8 the magnifier l4 and the indicator l3.
  • lt is important to point out that, essentially, the movements of the operative parts of the machine have a value determined by the magnitude of the corresponding unit, thus, a card feeds step by step in shifts equal to the magnitude of each square on its face in the case that the card is moveable.
  • a comb moves step by step in shifts corresponding to the magnitude of the width of its teeth, moreover, the relative movement between a card and the corresponding comb takes place in the form of proportional magnitudes.
  • Apparatus for preparing pattern control elements for knitting machines by removing portions thereof which correspond to predetermined indications on a program, such as by removing teeth from a selector comb in a sequence indicated on a program card comprising card mounting means for receiving a program card having at certain points thereon indicia identifying portions to be removed from a pattern control element,
  • element mounting means for receiving a pattern control element to be prepared in accordance with a program card, element removal means supported ad acent said element mounting means for removing portions from a mounted control element,
  • program indicator means supported adjacent said card mounting means for indicating points on a mounted program card corresponding to portions of a mounted control element which are presented for removal
  • control means operatively connected with a first grouped means including said card mounting means and said element removal means and with a second grouped means including said element mounting means and said program indicator means, said control means moving one of said first and second grouped means relative to the other of said first and second grouped means for stepwise successive presentation of portions of a mounted control element and corresponding points of a mounted program card.
  • control means comprises carriage means mounting said second grouped means for stepwise successive transla tion relative to said first grouped means.
  • said element removal means comprises hammer means for impact against portions to be removed and electromagnetic actuator means operatively connected with said hammer means for driving the same.
  • said element mounting means comprises clamp means having a fixed jaw and a moving jaw and further comprises means for urging said moving jaw toward said fixed jaw and into clamping engagement with a pattern control element disposed therebetween.
  • said card mounting means comprises roller means for receiving a program card and for successively advancing received card to display a selected one of a plurality of lines of indicia.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US00142981A 1970-05-16 1971-05-13 Machine for cutting teeth on selector combs for drums and others for knitting machines Expired - Lifetime US3730412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES379719A ES379719A1 (es) 1970-05-16 1970-05-16 Maquina para cortar talones a los peines de seleccion de tambores y otros para telares de genero de punto.

Publications (1)

Publication Number Publication Date
US3730412A true US3730412A (en) 1973-05-01

Family

ID=8455878

Family Applications (1)

Application Number Title Priority Date Filing Date
US00142981A Expired - Lifetime US3730412A (en) 1970-05-16 1971-05-13 Machine for cutting teeth on selector combs for drums and others for knitting machines

Country Status (5)

Country Link
US (1) US3730412A (enExample)
DE (1) DE2122751A1 (enExample)
ES (1) ES379719A1 (enExample)
FR (1) FR2095012A5 (enExample)
IL (1) IL36859A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151941A (en) * 1976-08-25 1979-05-01 Rudolph Beaver, Inc. Machine for detaching a surgical blade from a continuous strip in which it is formed and presenting it to a position for a subsequent operation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047217A (en) * 1961-01-26 1962-07-31 Kalin I Sheppard Apparatus for forming drum jacks
US3542269A (en) * 1968-06-13 1970-11-24 Strickmaschinenbau Veb Apparatus for breaking or forcing out the foot portions of pattern sinkers for jacquard knitting machines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047217A (en) * 1961-01-26 1962-07-31 Kalin I Sheppard Apparatus for forming drum jacks
US3542269A (en) * 1968-06-13 1970-11-24 Strickmaschinenbau Veb Apparatus for breaking or forcing out the foot portions of pattern sinkers for jacquard knitting machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151941A (en) * 1976-08-25 1979-05-01 Rudolph Beaver, Inc. Machine for detaching a surgical blade from a continuous strip in which it is formed and presenting it to a position for a subsequent operation

Also Published As

Publication number Publication date
FR2095012A5 (enExample) 1972-02-04
ES379719A1 (es) 1972-08-16
IL36859A0 (en) 1971-07-28
DE2122751A1 (de) 1971-12-02
IL36859A (en) 1974-03-14

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