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Class 139/66R - Dobby


Subclass of Class 139 - Textiles: weaving
Definition: A pattern-controlled shedding motion for actuating heddle
No. of patents: 64
Last issue date: 07/19/2011


1    
NumberTitleIssue Date
7980274Rotary dobby, a loom including such a dobby, and a method of controlling such a dobby
A dobby includes two controlled latches for coupling a drive element mounted to a main drive shaft of the dobby and an actuator element in rotation. A first resilient element resiliently biases each of the latches towards a configuration in which their respective be...
07/19/2011
7140399Shaft drive system for power loom shafts
A novel shaft gear for harmonious engagement and disengagement of individual heddle shafts and for deriving their motion from the rotary motion of a single input shaft has a coupling system with two input elements. While one of the input elements serves to drive the...
11/28/2006
7059356Shed-forming device for a power loom
A shed forming device (1) for a power loom has a plurality of heddle shafts, to which a drive mechanism with a plurality of servo motor groups (13, 14) is assigned. The servo motor groups are located below each of the heddle shafts (3 through
06/13/2006
6938647Rotating dobby for weaving loom and weaving loom equipped with such a dobby
The dobby according to the invention comprises, at the level of each of its blades, an oscillating piece associated with an actuation element, at least one mobile coupling member borne by the actuation element and two pivoting levers subjected, on the one hand, to t...
09/06/2005
6478055Pulleyless shed-forming device for a weaving machine
A pulley-less shed-forming device for a weaving machine, such as a jacquard machine, has a number of shed-forming elements (1), such as hooks, to determine the positions of one or more warp yarns on a weaving machine. A lifting device (50), (51) moves the...
11/12/2002
6105630Electrical rotating actuator for forming a weaving loom shed
An electrical rotating apparatus for controlling a harness cord associated with the shed of a weaving loom which includes an actuator including a rotor and a stator. The rotor is formed of at least two permanent magnets which are mounted within a tube so ...
08/22/2000
6073662Hook selection device for a weaving loom dobby head
A hook selection device for a weaving loom dobby head where the dobby includes a bottom board carrying hooks and an upper part for supporting the selection device. The upper part moves relative to the bottom board and includes rigid heald shafts provided ...
06/13/2000
5944061Dobby with cam drum lever drive
A dobby for controlling movements of a heald frame in a weaving machine is provided. A treadle is mounted on a treadle spindle and a link arrangement connects the treadle to the heald frame. Levers are mounted on the treadle and catching members are arran...
08/31/1999
5918645Catch configurations for the pivot arms of a rotary dobby
A rotary dobby which includes pivoting arms which are moveable with respect to a plate connected to an element for actuating a heddle frame in controlled response to a reading-in device and wherein the pivot arms include catches which are uniquely configu...
07/06/1999
5908051Actuating electromagnetic selection device for dobby mechanisms
An actuating selection device for a dobby mechanism for controlling movement of components used to affect movement of a heddle frame and a weaving loom wherein the selection device includes selector members which are pivotally mounted adjacent pole faces ...
06/01/1999
5908050Actuator spacing for pivoting arms of a rotary dobby
A rotary dobby which includes pivoting arms which are moveable with respect to a plate connected to an element for actuating a heddle frame in controlled response to a reading-in device and wherein the pivoting arms include catches which are engageable wi...
06/01/1999
5488977Electromagnet-striker bar system for a rotary dobby drive device
An electromagnet-striker bar system for the control device of a rotary dobby includes an amagnetic container having an extremely rigid box structure into which the iron cores of the electromagnets are equidistantly inserted and irreversibly locked. Amagne...
02/06/1996
5365979Dobby for electromagnetically controlling a heald frame
A dobby comprises first and second hooks relatively moved in the direction of approaching and leaving each other, a lever for selectively forcing the second hook to be engaged with the first hook, and a pusher for selectively providing the force to the le...
11/22/1994
5345973Adjustable connection link between the dobby and the crank levers of the heddle frame control rods in a loom
An adjustable connection link is provided between the dobby and the first crank lever of the control rods of each loom heddle frame. The connection link consists of two tubular bars of hollow aluminum alloy section pieces, preferably of rectangular cross-...
09/13/1994
5335564Cam for revolving dobby
A cam for a revolving dobby includes a plate with an upwardly extending protective external edge, the external edge has two peripherally located, mutually opposite notches, key levers are associated with the plate and are protected by the external edge, t...
08/09/1994
5316049Locking mechanisms for selective retention of oscillating levers engaged by knives in a dobby
In a heavy closed-shed dobby of a weaving machine having oscillating levers which are selectively connected to one of two oppositely movable actuation knives by rocking double hooks mounted thereto so as to control the movement of heddle frames to which t...
05/31/1994
5309949Knife control mechanism for a weaving loom
A mechanism for controlling the reciprocating movement of knives associated with rocking hooks connected to the heddle frames of a weaving machine which mechanism includes a pair of rotatable drums oriented parallel to the path of movement of the knives. ...
05/10/1994
5265650Position sensor for an electronic rotary dobby
An automatic control system for an electronic rotary dobby, has a pair of permanent magnets mounted on each of the corresponding rocker members. These members are driven by the dobby operating crank arms, such as the ends of the main levers. The magnets o...
11/30/1993
5259419Keying lever arrangement in a high-speed rotary dobby
A high-speed rotary dobby key mover mechanism having a main crank arm in which two keying levers that have the same arm ratio are mounted for pivotal movement on a cam in opposing positions. The adjacent ends of the keying levers cooperate with a key, whi...
11/09/1993
5214834Process for assembling the actuation elements of a rotating dobby
A process for assembling the actuation elements of a rotating dobby, in which the connection between the driver plates of the different actuation elements and the driven shaft thereof is effected by axial tightening of the driver plates between an end cap...
06/01/1993
5209269Positive eccentric dobby
A positive eccentric dobby having a rigidly mounted roller lever shaft with minimal clearance, on which pivoted roller levers are disposed, which transmit the movement to the heald frames via coupled connecting rods, reversing levers and rods. A camshaft ...
05/11/1993
5165454Detection of warp in reed dent before loom start up
A warp insertion monitoring method and apparatus for positively protecting woven cloth from defects due to warp insertion error or failure. A warp detector is disposed on a loom so as to have a warp presence/absence detection region located at a front or ...
11/24/1992
5125435Electro-magnetic cassette unit for controlling dobbies
An electro-magnetic unit for controlling the needles associated with the dobbies and other weaving mechanisms of a loom which includes a series of cassettes each containing electro-magnets for attracting blades associated with springs and stops to thereby...
06/30/1992
5125434Actuation elements for a rotating dobby
An assembly of actuating elements of a rotating dobby for a weaving loom wherein the elements for controlling the movement of each heddle frame include a lever pivotably connected to a connecting rod selectively engageable with an eccentric which is mount...
06/30/1992
5069256Loom harness system with spaced parallel rotating shafts
A loom harness having nested pairs of cylinders. The pairs of cylinders are arranged in parallel fashion and offset in relation to one another on a rigid, stationary frame. Pillow blocks spaced along the frame support the cylinders. Flexible cables, conne...
12/03/1991
5031668Jacquard weaving machine utilizing selectively reciprocatable control members
An apparatus for controlling warp threads on weaving machines, particularly suited for control of warp threads on Jacquard type machines, for example selvedge machines. Control members are arranged to control movement of a warp thread and are adapted to b...
07/16/1991
4986315Weaving machine with a synchronously or independently operable mechanical dobby
A weaving installation includes a weaving machine and a dobby which can be driven by the weaving machine. In order for the weaving machine to drive the dobby, the weaving machine may be provided with a pulse generator for the transmission of pulses to a c...
01/22/1991
4984607Device for driving harnesses of weaving machines
A device for driving harnesses of weaving machines includes at least two driven cam shafts and at least one pair of conjugated cams connected to each other for each shaft. Swivel mounted levers which swivel about a common shaft are mounted alternately and...
01/15/1991
4949760Offset hook, balanced center shed dobby apparatus
A dobby apparatus is provided for use with hand looms for automatically controlling the lifting sequence of a plurality of shaft assemblies in accordance with a predetermined weaving program. The dobby apparatus has a dobby operating drive mechanism conne...
08/21/1990
4924915Modulator for controlling high-speed rotary dobbies
A modulator for controlling high-speed rotary dobbies of the type which control the dobby main shaft's motion by transmitting power from a drive shaft through pivotable rocker supports rotatably driven by the drive shaft and engaging conjugate cams so tha...
05/15/1990
4646788Rotary dobby
A rotary dobby for moving a shaft includes a connecting rod connected to the shaft to be moved, the connecting rod having two mutually-opposite wedge detents disposed thereon, an eccentric disk carried on the connecting rod having a wedge guide extended r...
03/03/1987
4643231Rotary dobby
A rotary dobby for moving a shaft includes a connecting rod connected to the shaft to be moved, the connecting rod having two mutually-opposite wedge detents disposed thereon along a given wedge-detent diametral line, an eccentric disk carried on the conn...
02/17/1987
4614211Dobby
A rotary switch is provided in a dobby with a rotation drive and has for controlling the coupling part an annular collar. During rotation of the drive shaft, the coupling part is guided actively by the rotary switch, the position of which during this time...
09/30/1986
4597417Lifting unit for a rotational dobby
A normal position of a shifting wedge of a lifting unit for a rotational dobby is achieved by a movable arrangement of the recess in a locking block which receives the wedge and has rigid side flanks. The entire locking block is, against the urging of a s...
07/01/1986
4552184Method and apparatus for controlling a rotation dobby
A dobby includes a needle mechanism having a reading needle, the head of which, during reading of a nonperforated location on a pattern card, engages a pawl and, during reading of a hole in the card, releases the pawl to permit the pawl, under the force o...
11/12/1985
4544000Synchronized rotating dobby for weaving looms
For the purpose of producing a synchronized rotating dobby capable of operating equally well in both directions of rotation, a plate fixed to a heddle-frame displacing eccentric is provided with a second notch diametrically opposite the immobilizing first...
10/01/1985
4542769Coupling arrangement for controlling the harnesses in a weaving machine
A locking lever is articulated to a latch. The locking lever is pivoted or swung out against the action of a spring and the pivoting or swinging movement is limited by a stop mounted at an eccentric. The opposite pivoting or swinging movement of the locki...
09/24/1985
4534385Leveling device for weaving mechanisms incorporating cams of the negative type
The invention relates to a levelling device for weaving mechanisms incorporating cams of the negative type. With each oscillating lever there is associated a tipping pawl adapted, under the effect of a control member common to all the pawls, to bear yield...
08/13/1985
4497346Clutch arrangement for controlling a heddle of a weaving machine
The clutch arrangement contains a stroke member which carries two levers and a spring connecting the levers. The stroke member is driven by a drive lever which engages between the two levers. The stroke member drives the bar for the control levers while a...
02/05/1985
4478254Device for actuating shedding motion searching and slow speed operation on a loom
The invention relates to the textile industry and more particularly to looms. The device comprises a motor-reducing gear unit which can drive the dobby mechanism selectively, through a clutch, this mechanism being normally driven, from the main shaft of t...
10/23/1984
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