Patent US3695060A successfully refreshed from Google Patents.
US3695060A
Expired / Lapsed
US
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Apparatus for controlling the jacks of knitting machines
Assignee: Individual
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Filing: 1969-06-30
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Granted: 1972-10-03
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Expires: 1989-06-30
Abstract
Abstract In a knitting machine, such as a Jacquard controlled knitting machine, in which the needles are selected by means of pivotal plates which are mounted on a reciprocatory plate bed and which are actuated by electromagnetic means energized in accordance with information stored in an information carrier, at least some of the parts cooperating with the electromagnetic means to effect selection of the needles are arranged to be temporarily demagnetized before the plates are released for return to their rest position.
Inventors
- 👤 Karl Flad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:37
CPC Classifications
D; D04; D04B; D04B15/00; D04B15/66; D04B15/68; D04B15/78
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
185 words
A knitting machine comprising needles mounted in a needle support, jack means engageable with said needles, a rail member arranged to be moved periodically towards and away from said jack means, plates pivotally mounted on said rail member and provided with striker means for selective engagement with said jack means upon movement of said rail member towards said jack means for displacing selected needles, electromagnetic means mounted on said rail member, one electromagnetic means being provided for and associated with each of said plates, an armature member attached to each plate; said armature member of said plate being associated with said electromagnetic means and said rail member to form parts of an electromagnetic circuit, an information storage means, said electromagnetic means being arranged to be energized in accordance with signals derived from information stored in said information storage means thereby to effect selective pivoting of said plates into a position in which said striker means engage selected jack means, and means for demagnetizing at least temporarily at least some of said parts forming said electromagnetic circuit, while said plates are detained in said selected position.
Claim 2
Dependent Claim
185 words
A knitting machine comprising needles mounted in a needle support, jack means engageable with said needles, a rail member arranged to be moved periodically towards and away from said jack means, plates pivotally mounted on said rail member and provided with striker means for selective engagement with said jack means upon movement of said rail member towards said jack means for displacing selected needles, electromagnetic means mounted on said rail member, one electromagnetic means being provided for and associated with each of said plates, an armature member attached to each plate; said armature member of said plate being associated with said electromagnetic means and said rail member to form parts of an electromagnetic circuit, an information storage means, said electromagnetic means being arranged to be energized in accordance with signals derived from information stored in said information storage means thereby to effect selective pivoting of said plates into a position in which said striker means engage selected jack means, and means for demagnetizing at least temporarily at least some of said parts forming said electromagnetic circuit, while said plates are detained in said selected position.
Claim 3
Dependent Claim
165 words
Apparatus for controlling the jacks of the needles in the needle support of a knitting machine, in particular a Jacquard machine, by means of an information carrier in which information relating to the position of the individual jacks in each course is stored, wherein the knitting machine has a rail which extends over the length of the needle support and is periodically moved against the rear end of the jacks for the purpose of adjusting the needles, and wherein displaceable strikers are provided which cooperate with the jack ends and which are disposed at one end of plates pivotally mounted on the rail, the strikers being adapted to be moved selectively into and out of engagement with the jack ends by means of electromagnets in accordance with the information sTored in the information carrier, characterized in that the rail and the plates and magnetizable parts of the magnetic circuit of each of the electromagnets are arranged to be at least temporarily de-magnetized during the operation.
Claim 4
Dependent Claim
165 words
Apparatus for controlling the jacks of the needles in the needle support of a knitting machine, in particular a Jacquard machine, by means of an information carrier in which information relating to the position of the individual jacks in each course is stored, wherein the knitting machine has a rail which extends over the length of the needle support and is periodically moved against the rear end of the jacks for the purpose of adjusting the needles, and wherein displaceable strikers are provided which cooperate with the jack ends and which are disposed at one end of plates pivotally mounted on the rail, the strikers being adapted to be moved selectively into and out of engagement with the jack ends by means of electromagnets in accordance with the information sTored in the information carrier, characterized in that the rail and the plates and magnetizable parts of the magnetic circuit of each of the electromagnets are arranged to be at least temporarily de-magnetized during the operation.
Claim 5
Dependent Claim
182 words
Apparatus for controlling the jacks of the needles in the needle support of a knitting machine, especially a Jacquard machine, by means of an information carrier in which information relating to the position of the individual jacks in each course is stored, wherein the knitting machine has a rail which extends over the length of the needle support and is periodically moved against the rear ends of the jacks for the purpose of adjusting the needles, displaceable strikers being provided for cooperation with the jack ends and disposed at one end of plates pivotally mounted on the rail, the strikers being selectively moveable into or out of engagement with the jack ends in accordance with a pattern stored in the information carrier by means of electromagnets, wherein an armature rod of non-magnetizable work material is disposed at each plate and extends approximately at a right angle to the longitudinal axis of the plate and at a right angle to its pivot axis, which armature carries an armature disc of magnetizable material in the region of the pole faces of the associated electromagnet.
Claim 6
Dependent Claim
182 words
Apparatus for controlling the jacks of the needles in the needle support of a knitting machine, especially a Jacquard machine, by means of an information carrier in which information relating to the position of the individual jacks in each course is stored, wherein the knitting machine has a rail which extends over the length of the needle support and is periodically moved against the rear ends of the jacks for the purpose of adjusting the needles, displaceable strikers being provided for cooperation with the jack ends and disposed at one end of plates pivotally mounted on the rail, the strikers being selectively moveable into or out of engagement with the jack ends in accordance with a pattern stored in the information carrier by means of electromagnets, wherein an armature rod of non-magnetizable work material is disposed at each plate and extends approximately at a right angle to the longitudinal axis of the plate and at a right angle to its pivot axis, which armature carries an armature disc of magnetizable material in the region of the pole faces of the associated electromagnet.
Claim 7
Dependent Claim
34 words
Apparatus according to claim 3, wherein each armature rod is displaceably guided in its axial direction and is pivotally connected to the plate at a location spaced from the pivot axis of the plate.
Claim 8
Dependent Claim
20 words
Apparatus according to claim 1, wherein the electromagnets associated with mutually adjacent plates are staggered and disposed in two rows.
Claim 9
Dependent Claim
33 words
Apparatus according to claim 1, wherein the plates are constructed as two armed levers and wherein the electromagnets of adjacent plates are disposed on different sides of the pivot axis of the plates.
Claim 10
Dependent Claim
30 words
Apparatus according to claim 3, wherein flange-like upstanding edge rails of non-magnetizable material are disposed along the edges of the rail, and guides for the armature rods are provided therein.
Claim 11
Dependent Claim
17 words
Apparatus according to claim 1, wherein a plurality of magnets are grouped together to form insert units.
Claim 12
Dependent Claim
32 words
Apparatus according to claim 7, wherein the magnets are staggered and disposed in two rows and wherein only magnets disposed in the same row are grouped together to form an insert unit.
Claim 13
Dependent Claim
47 words
Apparatus according to claim 8, wherein an insert unit is provided with a cassette which has a U-shaped cross-section and which is open towards the armature rods, the cassettes having inserted therein the magnets and being provided with connecting terminals for the winding ends of the electromagnets.
Claim 14
Dependent Claim
43 words
Apparatus according to claim 10, wherein at least the terminals of one end of the magnet windings are connected in an electrically conductive manner to terminal parts which are accessible from the outside when the respective insert unit is inserted in the rail.
Claim 15
Dependent Claim
14 words
Apparatus according to claim 11, wherein the external terminal parts are constructed as sockets.
Claim 16
Dependent Claim
90 words
Apparatus according to claim 1, wherein a magnetic flux is produced which is directed oppositely to the remanence of the magnetic circuit of the electromagnet, wherein a cancelling impulse transmitter is provided which is controlled in synchronism with the operating cycle of the apparatus and the output of which is connected to the electromagnets, and wherein the canceling impulse produced by the cancelling impulse transmitter has sufficient power and duration for canceling the remanent magnetism in the stationary and in the displaceable parts of the magnetic circuit of the electromagnets.
Claim 17
Dependent Claim
33 words
Apparatus according to claim 13, wherein the setting impulse terminates directly after detention of the strikers has been effected, and the canceling impulse follows directly the setting impulse while the strikers are detained.
Claim 18
Dependent Claim
25 words
Apparatus according to claim 14, wherein the detention means for the strikers is constructed so that the strikers aRe movable slightly in the return direction.
Claim 19
Dependent Claim
23 words
Apparatus according to claim 13 wherein the cancelling impulse with adjustable amplitude consists of at least one half-wave of the alternating mains current.
Claim 20
Dependent Claim
17 words
Apparatus according to claim 13 wherein the canceling impulse is in the form of a damped oscillation.
Claim 21
Dependent Claim
26 words
Apparatus according to claim 17, wherein for producing the cancelling impulse a capacitor is provided which is connected in parallel with the winding of the electromagnet.
Claim 22
Dependent Claim
20 words
Apparatus according to claim 13 wherein the canceling impulse transmitter is contained in a read-out device and is controlled thereby.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |