Abstract: An electric drive for a domestic appliance includes a rotor and a shaft. An axial bearing retains the rotor on the shaft. The axial bearing has an axle hole, a multi-sided outer contour and an end face having a recess running centrally through the axle hole. The rotor includes a bearing seat that has a multi-sided inner contour corresponding to the multi-sided outer contour. The bearing seat has lateral notches. The recess ends at opposite ones of the lateral notches on opposite sides of the end face.
Abstract: A filter tow of cellulose acetate filaments and/or cellulose acetate staple fibers, has at least the surface of the filaments and staple fibers consisting of a cellulose acetate having an acetyl number of less than 53%, preferably less than 49%. The method for the manufacture of the filter tow comprises the spinning of cellulose acetate filaments from a solution of cellulose acetate having an acetyl number of at least 53% in acetone, if necessary, cutting the filaments into staple fibers, and combining the filaments and/or staple fibers to a filter tow, the filaments or staple fibers being hydrolyzed so that at least the cellulose acetate at the surface of the filaments and staple fibers has an acetyl number of less than 53%, preferably less than 49%. The invention involves also a tobacco smoke filter element made from the filter tow, as well as a method for the manufacture of the tobacco smoke filter element.
Abstract: In a reading device for a dobby machine, the reading levers and retaining hooks are pivotally mounted on separate axes. Each reading lever rotates a retaining hook so that the angular velocity of the retaining hook decreases as the retaining hook pivots from its disengaged to engaged position and increases when the retaining hook is disengaged. This acceleration and deceleration cushions the impact that the retaining hook experiences with changes in rotational direction.
Abstract: A command device for a dobby machine, which device includes a pattern card having a plurality of perforations bored in a pattern corresponding to a desired fabric and driven in one direction and a feeler needle suspended from a horizontal needle and displaceable longitudinally while being guided by a guide member so as to permit the insertion of a lower end portion thereof into the perforations and the detection of presence or absence of the perforations in the pattern card, whereby to give an operational command to a drive mechanism of the dobby via the horizontal needle so as to cause a heald frame to undergo prescribed up-and-down movement for production of the desired fabric. The feeler needle is elastically flexible in the direction of motion of the pattern card at a portion below the guide member so as to avoid damages to edge portions of the perforations of the pattern card, which damages would otherwise take place due to repeated reciprocation of the feeler needle into and out of the perforations.
Abstract: Dobby for a weaving loom in which control of the operative and non-operative positions of retaining hooks or hook arms which are engaged with and disengaged from hooks of heald frame-driving levers to actuate desired heald frame is electrically performed through solenoids corresponding to the respective levers, which are actuated by an electronic control system having a micro-computer.
Abstract: This invention relates to a leveling device in which a shaft (7) of a card cylinder (6) is supported by a bearing of a card cylinder bracket, base portion of the card cylinder bracket is pivotally attached to a machine frame, and the card cylinder bracket can be rocked between working attitude and leveling attitude. The card cylinder bracket is urged into the leveling attitude by a spring or the like, and it is held in the working attitude and the leveling attitude by a cam or a crank arm which is disposed near the card cylinder (6) and installed to a parallel shaft being in parallel to the cylinder.
Abstract: The invention provides improvements in the members of a loom dobby reading unit, which enable the reading unit and control unit to be structurally separated. For this purpose, the reading unit rockers act on the control unit by simple bearing and thrust contact between a tappet provided on the rockers and the horizontal needles for the lifting rods of the control unit hooks. In addition, there are provided a very rigorous guide for the reading unit rocker movements, an improved mechanism for controlling the lowering movements of the rocker thrust rods, and an improved mechanism for controlling the pressure bars, said mechanisms both using precise cam controls.
August 5, 1982
Date of Patent:
September 18, 1984
Fimtessile Fabbrica Italiana Macchinario Tessile S.p.A.
Abstract: Improvements are made to members of a loom dobby control unit so as to allow structural separation between the reading unit and control unit. For this purpose, the reading unit rockers operate on the control unit by simple bearing and thrust contact with the horizontal needles which control the hook lifting rods. Moreover, the lifting blades for said rods are controlled together with the hook lowering plates by the motion of shafts which control the dobby knife oscillations.
August 5, 1982
Date of Patent:
August 14, 1984
Fimtessile Fabrica Italiana Macchinario Tessile S.p.A.
Abstract: The present invention relates to electromagnetic devices for controlling dobbies and other weaving systems, wherein the control unit which contains the electro-magnets is borne by an oscillating frame on which is mounted an equal number of selectors associated with a spring which tends to move them away from the associated poles of magnetic attraction. Each selector acts selectively on the actuating hooks of the dobby, and a fixed stop ensuring its return into applied position against the magnet upon return into a non-actuating position. The device is applicable to the control of a dobby with double swinging levers or to the control of a rotating dobby.
Abstract: An apparatus for controlling a dobby in which reading needles read a punch card and each needle influences the movement of a respective heddle frame. Two outer disks having annular toothed portions arranged on the axial facing sides thereof which face one another are secured on the shaft of a punch card drive cylinder. The teeth of the toothed portions are angularly offset by one-half the tooth pitch. Between the two outer disks, and freely rotatably supported on the shaft is a central disk with annular toothed portions on the axially facing sides thereof which are also offset by one-half the tooth pitch. A movable guide member for the reading needles is secured on and driven reciprocally by the central disk. Upon indexing the pattern card for one pick, the toothed portion of one outer disk moves the central disk toward the second outer disk and effects engagement of the facing toothed portions on the central disk and the second outer disk.
Abstract: A reading and lifting device has a force amplifying bar which can be reciprocated vertically and is driven positively, and a reading needle is slidably supported therein. A pattern card with nonperforated and perforated points is provided below the force amplifying bar. When the needle hits a nonperforated point, the needle is moved back into the force amplifying bar. In one embodiment, the needle slides with its head on a surface which effects a swivelling of a lock member. Through this, an end of the lock member comes to lie in front of an offset portion of a control arm. The force amplifying bar during its downward movement then carries the control arm along against the force of a spring. The device facilitates the sensitive reading of a pattern card and the forceful passing on of the control information read.
Abstract: A reading needle is slidingly supported in a force amplifying bar which is automatically moved up and down and the reading needle reads nonperforated and perforated points of a pattern card. In the case of a perforated point, a pivotal lock member biassed by a spring remains in a first position and pushes a draw arm of a correcting element downwardly unless this draw arm is already in a downward position. When the reading needle reads a nonperforated point, it is moved within the force amplifying bar by the pattern card during forward movement of the force amplifying bar. A sloped surface of a slot in the lock member slides over the head of the reading needle and swings the two-arm lock member to a second position in which one lock member arm reaches within the active range of an offset portion of a second draw arm and tilts the correcting element, whereby a cam surface of a draw hook is supported on an arm of the correcting element.
Abstract: A dobby with a mechanical reading device for a control card having perforated and nonperforated portions therein according to a pattern. The reading needle of the reading device of the pattern card has yielding elements for the purpose of reducing the impact force of the reading needle onto the pattern card.
Abstract: A method for controlling the heddle movement in a shed-forming machine and apparatus for performing the method. Reading needles are moved into and out of engagement with a pattern card having perforated and nonperforated portions therein actively cooperating with the needles which are adapted to move toward and away therefrom. Power amplifying structure is provided for converting the control operations noted by the reading needles into mechanical movements effecting selected control of the heddles dependent upon the position of the reading needle relative to the pattern card. A lock member is movably supported on a bar and its movement is controlled by whether the reading needle is received into a perforated portion of the pattern card or whether it engages a nonperforated portion of the pattern card. A shifting of the locking member will result in a selected and simultaneous control of a correcting element to either lift a draw hook or lower same into and out of engagement with a draw knife.
Abstract: A device for the selective actuation of the needle selection members in needles looms using a perforated paper pattern, of the kind comprising memory means for recording information which corresponds to the perforations of the paper, them for controlling, as a function of this information, the members it is desired to displace is characterized in that it comprises a memory having displaceable members lockable in position, means for applying this memory to the perforated paper in order to displace selectively the said elements as a function of the perforations and means for applying it then to the selection members in such manner that the elements displace the latter in accordance with the information they have registered.
Abstract: The Jacquard machine employs a selector system for blocking and un-blocking the pressers (e.g. Jacquard needles) wherein use is made of a control means comprised of two electrically magnetizable relatively movable rods. Upon energization of a magnetic field generator, the rods move away from each other so that one of the rods is moved into a blocking position relative to a presser needle. Upon de-energization of the magnetic field generator, the rods come together so that the presser needle is unblocked.
Abstract: The present invention relates to apparatus for controlling the actuating mechanism of a loom dobby and may be most effectively used in looms wherein the heald shafts are raised and lowered by means of continuously-rotating dobbies. This apparatus includes a unit for unit comparing the actual position of the heald shaft with a preset one, whose one input is connected to a program carrier and fed with information on the preset position of the heald shaft, whereas the other input is connected to the output of the actuating mechanism, thereby establishing a feedback coupling, and is fed with information on the actual position of the heald shaft, the output of the comparison unit being connected via a time-delay element to the second input of a logical element whose output is directly connected to the actuating mechanism. This provides for automatic control and matching of the actual and preset positions of the heald shaft.
March 22, 1977
Date of Patent:
February 6, 1979
Alexandr A. Kazurov, Leonid M. Pevzner, Alexandra E. Mikhalina, Nikolai P. Kachkov, Georgy S. Lapshinov, Nikolai S. Sedov, Nikolai P. Kainkov, Stanislav M. Anisimov
Abstract: The Jacquard machine employs a selector system for blocking and un-blocking the pressers (e.g. Jacquard needles) wherein use is made of pivotally mounted locking levers between a control element and each presser. The control elements which may be in the form of multimorphous bending strips or a switching means comprised of two electrically magnetizable relatively movable rod-like members, engage with the levers to cause pivoting of the levers into a blocking or non-blocking position relative to the pressers.
Abstract: A negative double-lift dobby, Hattersley system, comprising controlled holding hooks and draw hooks. In order for the holding hook to be able to be controlled at any time, namely independent from the position of the draw hook, by the pegs of the pattern card, at least one of the cooperating hooks is arranged shiftably against the force of a spring. The invention facilitates the control of fast running weaving machines and permits through the direct control of the heddles an increase in durability by reducing faulty controls and through the possibility of the precontrol an increase of the speed of the weaving machine.
Abstract: The jacquard needles are moved lengthwise via a reciprocable drive element and a selector in order to selectively press the lifting wires in a pressing direction. Each needle carries a force accumulator, such as a coiled spring, which abuts against the drive element and allows the drive element to move in the pressing direction when a given needle is not to be moved. Each needle is also locked to the drive element to move with the drive element in a direction opposite the pressing direction.
Abstract: In a chain disc-type compound dobby machine, flexible instruction receiving members are integrally fixed to supporting hooks for decreasing the weight and the moment of inertia of the moving parts so that the connecting and detaching action of the hooks may be securely and easily performed. Moreover the number of parts is reduced and the structure becomes simple while at the same time effecting a stable high speed operation of the dobby machine.