US2868002A - Control device for circular knitting machines - Google Patents

Control device for circular knitting machines Download PDF

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Publication number
US2868002A
US2868002A US592417A US59241756A US2868002A US 2868002 A US2868002 A US 2868002A US 592417 A US592417 A US 592417A US 59241756 A US59241756 A US 59241756A US 2868002 A US2868002 A US 2868002A
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United States
Prior art keywords
drum
lever
patterning
levers
tappet
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
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US592417A
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English (en)
Inventor
Ferraguti Luigi
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Individual
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Individual
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Publication date
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Publication of US2868002A publication Critical patent/US2868002A/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/26—Circular knitting machines with independently-movable needles for producing patterned fabrics

Definitions

  • the present invention has for its object a device which allowsthese three operations tobe performed, by a single control.
  • the device according to the invention is essentially characterizedby a control member set in action by the maindrive of the machine and capable .of performing two activelstrokes of different length.
  • thecontrol member By the shorter stroke thecontrol member, through a lever system, causes the liftingof. the patterning levers andthe locking of the ratchet gear which operates the pattern drum, so that the drum stops.
  • the con- 'trol member By the second andlonger. stroke the con- 'trol member, through the same lever system, causes a further lifting of the levers and the temporary release of the ratchet gear, whereupon the drum will rotateidle, stoppingat a predetermined point, that is when the drum returns to its initial position.
  • Figure 1 is a perspective view of the device
  • Figure- 2 is a plan-view'ofthedevice
  • Figure 3 is an elevation of the-bottom-portion of the device viewed in the direction of the arrow A of Figure 2;
  • Figure 4 is a view of the operator for the control member. 1
  • the rotation of the patterning drum 1 is controlled by a lever 2, which carries at one end a pawl 3 adapted to engage with a ratchet wheel 4 coaxial to and rotatable with the drum 1.
  • the other end of the lever 2 carries a roller 5, designed to roll on a cam 6 set in rotation by the main drive of the machine.
  • tappet 15 is actuated by the cam 20, which is a part of the main drum for controlling the pattern.
  • This cam has two portions in relief. The first and lower portion determines the stopping of the patterning drum and happens to correspond to the portion at which the machine works the heel of the stockmg.
  • the control device operates as follows:
  • the lever 2 with the pawl 3 causes, through the action of the earn 6, the stepwise rotation of the ratchet wheel 4 and hence of the drum 1.
  • the oscillatory arm 11 mounted on the lever 12 is held thereon, by a spring 19, in such a position as to prevent it interfering with the movements of the pawl 3, and in which the tooth 10 of the said arm lies some millimeters apart from the disc 8.
  • the tappet 15 makes a longer control stroke.
  • the levers 16 are further moved apart from the drum 1, while because of the further oscillation of the lever 12 (fixed to the lever 14), the tooth 10 travels to the position indicated at 10b, where it rests fiatwise on the periphery of the disc 8, thus swinging the arm 11, against the tension of the spring 19, outwardly to the position 11b, inwhich this arm does not prevent the operation of the ratchet gear 34.
  • the lever 2 can oscillate by action of the cam 6 causing the drum 1 to rotate idly till the notch 9 arrives opposite to the tooth 10, which snaps into it taking the arm 11 behind the pawl 3 and thus stopping the rotation of the drum 1 in a position corresponding to its initial position.
  • the second and higher portion determines the stopping of the patterning drum only when this has returned to zero, that is to say when it has returned to the initial position, for the patterning. This happens at the end portion of the foot, while the machine works the point of the stocking.
  • the device of the invention it is thus possible, by the selective operation of a single member, i. e. the tappet 15, to perform the three desired operations, namely: the lifting of the patterning levers 16, the stopping of the patterning drum 1 and the returning of the drum to its initial position.
  • a patterning drum In a circular knitting machine, a patterning drum, patterning levers operated by said drum, a ratchet gear driving said drum and operatedby the main drive of the knitting machine, a control member operated by the main drive of the knitting machine and adapted to execute two active strokes of different lengths, a lever system operated by said control member and adapted, when operated by the shorter stroke of said control member, to lift said patterning levers and to stop said ratchet gear and, consequently, said drum, and adapted, when operated by the longer stroke of said control member, to further lift said patterning levers and to temporarily release said ratchet gear, causing said patterning drum to rotate idly to its initial position.
  • a patterning drum a patterning drum, patterning levers operated by said drum, a ratchet gear driving said drum and operated by the main drive of the knitting machine, a control tappet operated by the main drive of the knitting machine and adapted to execute two active strokes of different lengths
  • a lever system operated by said tappet and adapted, when operated by the shorter stroke of said tappet, to lift said patterning levers and to stop said ratchet gear and, consequently, said drum, and adapted, when operated by the longer stroke of said tappet, to further lift said patterning levers and to temporarily release said ratchet gear, causing said drum to rotate idly to its initial position
  • said lever system comprising a first lever acting on said patterning levers and a second lever secured to and pivotable with said first lever, said second lever carrying a stop member adapted, in consequence of the shorter stroke of said tappet, to enter the oscillation path of the pawl of said ratchet gear, thereby stopping said drum, and adapted, in consequence of the
  • a patterning drum In a circular knitting machine, a patterning drum, patterning levers operated by said drum, a ratchet gear driving said drum and operated by the main drive of the knitting machine, a disc coaxial to and integral in rotation with said drum, a notch formed in said disc, 21 control tappet operated by the main drive of the knitting machine and adapted to execute two active strokes of difierent lengths, a lever system operated by said tappet and adapted, when operated by the shorter stroke of said tappet, to lift said patterning levers and to stop said ratchet gear and, consequently, said drum, and adapted, when operated by the longer stroke of said tappet, to further lift said patterning levers and to temporarily release said ratchet gear, causing said drum to rotate idly to its initial position, said lever system comprising a first lever acting on said patterning levers and a second lever secured to and pivotable with said first lever, said second lever carrying a pivotable arm provided with a tooth.
  • said arm being adapted, in consequence of the shorter stroke of said tappet, to enter the oscillation path of the pawl of said ratchet gear, thereby stopping said drum, and adapted, in consequence of the longer stroke of said tappet, to leave temporarily said path and to return to the stopping position upon arrival of said drum at the initial position, said tooth on said arm snapping in said notch of said disc, by action of said spring.
  • a patterning drum a patterning drum, patterning levers operated by said drum, a ratchet gear driving said drum and operated by the main drive of the knitting machine, a disc coaxial to and integral in rotation with said drum, a notch formed in said disc, a control tappet operated by the main drive of the knitting machine and adapted to execute two active strokes of different lengths
  • a lever system operated by said tappet and adapted, when operated by the shorter stroke of said tappet, to lift said patterning levers and to stop said ratchet gear and, consequently, said drum, and adapted, when operated by the longer stroke of said tappet, to further lift said patterning levers and to temporarily release said ratchet gear, causing said drum to rotate idly to its initial position
  • said lever system comprising a first lever acting on said patterning levers and a second lever secured to and pivotable with said first lever, said second lever carrying a stop member adapted, in consequence of the shorter stroke of said tappet, to enter the oscillation path of the paw

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US592417A 1955-06-20 1956-06-19 Control device for circular knitting machines Expired - Lifetime US2868002A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT838071X 1955-06-20

Publications (1)

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US2868002A true US2868002A (en) 1959-01-13

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ID=11323866

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US592417A Expired - Lifetime US2868002A (en) 1955-06-20 1956-06-19 Control device for circular knitting machines

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US (1) US2868002A (enrdf_load_stackoverflow)
BE (1) BE548744A (enrdf_load_stackoverflow)
FR (1) FR1151715A (enrdf_load_stackoverflow)
GB (1) GB838071A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086378A (en) * 1959-04-24 1963-04-23 Armes De Guerre Fab Nat Control and braking device for pincarrying drums of circular knitting machines and the like

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1969853A (en) * 1929-05-02 1934-08-14 Scott & Williams Inc Pattern mechanism for knitting machines
US2316823A (en) * 1942-02-19 1943-04-20 Interwoven Stocking Co Circular knitting machine
US2754668A (en) * 1950-10-09 1956-07-17 Bentley Eng Co Ltd Patterning mechanism for knitting machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1969853A (en) * 1929-05-02 1934-08-14 Scott & Williams Inc Pattern mechanism for knitting machines
US2316823A (en) * 1942-02-19 1943-04-20 Interwoven Stocking Co Circular knitting machine
US2754668A (en) * 1950-10-09 1956-07-17 Bentley Eng Co Ltd Patterning mechanism for knitting machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086378A (en) * 1959-04-24 1963-04-23 Armes De Guerre Fab Nat Control and braking device for pincarrying drums of circular knitting machines and the like

Also Published As

Publication number Publication date
GB838071A (en) 1960-06-22
FR1151715A (fr) 1958-02-05
BE548744A (enrdf_load_stackoverflow)

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