Abstract: A decision is made as to whether a fabric to be knitted is tubular or flat, and density is corrected such that knitting-start density is smaller and knitting-end density is larger for a tubular fabric. Knitting-start density is larger and knitting-end density is smaller for a flat fabric. A variable density section is provided between the end part and the central part of the fabric thus correcting the density gradually. Stitches at the end part of the fabric are prevented from becoming uneven as compared with the stitches in the central part without requiring additional hardware.

Abstract: A carriage which completes one course of knitting to the knitting end of a fabric is stopped. Knitting in a next course is performed when the carriage reverses its moving direction and re-starts its movement. Since the knitting yarn is not knitted to the fabric until a carrier brought by the carriage reaches a position of a knitting needle holding the stitch of the fabric at the knitting end, the knitting yarn existing in a feeding path between a yarn feeding mechanism and the carrier is excessively increased and a slack is generated. Since a distance between a yarn feeding port formed at a carrier's frontal end and the knitting needle at the fabric-knitting end is also reduced, the knitting yarn is further increased excessively. The further-excessively-increased knitting yarn is taken in by a yarn feeding means by reversing a servomotor, and further pulled in by a rewinding arm.

Abstract: An object of the invention is to control the yarn length as appropriate in a tubular knitted fabric including a drop loop, regardless of the presence of crossover. For front and back needle beds, ones of those indicated by capitals ABC . . . among odd-numbered or even-numbered ones are allocated to a front portion thereof and the other portions indicated by lower cases abc . . . are allocated to a back portion thereof. At knitting needles ABC . . . which actually form stitch loops perform knitting operation, and knitting needles abc . . . between the knitting needles ABC perform hooking operation. A hung stitch is shook off, and the knitting yarn used for the hanging is absorbed in stitch loops at the knitting needles ABC . . . at both ends as shown in dotted lines. As shown in (b) by solid lines, the loop lengths of back stitches are shortened and the lengths of the knitting yarn at crossing portions are absorbed by the stitch loops of the back stitches.

Abstract: A process for urea production in a synthesis loop based on CO2 stripping is distinguished by the fact that at least part of a flow recycle carbamate is sent to a treatment of carbamate decomposition and removal of free ammonia to obtain a vapour flow containing CO2 and NH3 with minimum content of water, and a weak water carbamate solution sent back to a urea recovery unit URS and being at least part of above vapour flow containing CO2 and NH3 with minimum content of water directly fed to the bottom zone of a reaction space.

Abstract: For preventing holes from occurrence at an internally widened area of a rib knitted fabric, at the area, two needles, one on the front needle bed, the other on the back needle bed, are made empty. Then, a stitch held by an adjacent needle to one of the two empty needles is transferred to the other of the two empty needles so that two continuous needles on one needle bed are made empty and that the former empty needle on the other needle bed is provided with the transferred stitch. A yarn feeder is made to move over the area while feeding yarn till one needle before the two empty needles, then back above the area while feeding the two empty needles and an intermediate opposing bed needle, and move over the area while feeding yarn from the subsequent needles after the two former empty needles.

Abstract: Control circuit for providing the greater of a supply voltage V.sub.CC and a battery voltage V.sub.BATT. A comparator compares V.sub.CC and V.sub.BATT, and provides output signals to an inverting gain stage. A switch receives output signals from the inverting gain stage and provides the greater of V.sub.CC and V.sub.BATT as the circuit output and as the comparator supply voltage. The circuit output voltage rapidly switches between V.sub.CC and V.sub.BATT as the comparison status of the two voltages changes.

Abstract: In a flat knitting machine wherein a plurality of knitting locks work on a single needle bed to knit, the consumption of each yarn is measured and compared with the standard yarn length, and the stitch cam adjustment values of the respective knitting locks are corrected. The stitch cam adjustment data is stored for the respective combinations of stitch cams and yarns. Correction is not limited to the stitch cam which knitted the yarn of which consumption was measured. Correction by the same value is also given to the stitch cam adjustment values of other stitch cams relative to the yarn. As a result, for any combination of a stitch cam and a yarn which appears suddenly in the latter half of knitting, the stitch cam adjustment values have been corrected on the basis of the measurement of consumed yarn lengths of other stitch cams, generating no knitting gaps.

Abstract: A stitch increasing needle operating cam for a flat knitting machine having stitch increasing function. The needle operating cam for operating needle bodies and sliders of compound needles separately from each other, in which in relation to a lowering face of a needle body lowering cam of a loop delivering side cam, a slider lowering face for lowering a slider at a timing earlier than that by the lowering face of the needle body lowering cam is provided.

Abstract: A method of knitting an upholstery fabric having at least two adjoined regions of different knitted structures located side-by-side in a wale-wise direction and having courses extending continuously through both regions in which the fabric is knitted with stitches having a first loop length in one region and a second, different loop length in the adjacent region, the loop lengths of the two adjacent regions being relatively adjusted so that, in the relaxed condition of the fabric, the same number of courses in each of the two regions of different knitted structures in the wale-wise direction extend for substantially the same wale-wise distance, so as to give the overall structure a balanced even appearance.

Abstract: A knit run cam for vertically moving a needle when fabrics are knitted. There is provided a knit run cam comprising two cams having a needle butt lowering bevel overlapped in a range of at least a part of the same phase in a moving direction of a carriage, one cam having a needle butt lowermost position higher than the other cam.

Abstract: A cam carriage for flat-bed knitting machines has at least one leading and trailing draw-down element, having a drive top plate and a bottom plate with a draw-down track located at opposite sides of a cam plate in which a draw-down element is placed movably between an alignment position and several casting-off positions in a guide slot, and the driven top plate is rigidly connected with a drive element at least in the direction of the draw-down position.

Abstract: A device for the determination of the position of leading or trailing draw-down elements which can be shifted to operated in opposite directions in flat-bed knitting machines has a single step motor for shifting the draw-down elements, a position sensor and a switching element movable in relation to each other and cooperating with each other, the switching element indicating a basic position of the two draw-down elements. So that in such a device besides the basis position of the two draw-down elements the shifted position, i.e. which of the two draw-down elements is in the draw-down position, can be machine-internally determined, a second switching element is provided, which is operationally connected with the position sensor, the second switching element and the position sensor being movable in relation to each other and the second switching element being synchronously movable with the first switching element.

Abstract: A flat-bed knitting machine has been described which is provided with needle sinkers arranged in a knitting cam system of a cam box carriage featuring several cams adjustable by means of stepping motors and having an electronic control unit, which features a storage device for controlling the stepping motors. In order to make the knitting density variable not only in the longitudinal direction, i.e. uniformly as a whole, row by row, but also in the transverse direction across the knitting with knitting machines of this type, the stepping motors are controlled by the storage device, one motor of which, in each case, is associated with a pair of needle sinkers consisting of preceding and trailing needle sinkers during the stroke of the cam box carriage and in synchronism with the individual needles.

Abstract: A device is designed to operate two slides to which corresponding stitch regulation cams are bound, and it includes: a plate, mounted on the carriage and located below the slides, that is able to be moved by means in relation to the carriage in the direction in which this latter is itself moved, two tracks, symmetrical in relation to a vertical plane, formed in the upper part of the plate, each constituted by flat horizontal surface and by a flat surface that follows on and inwards from the former, turning downwards, elastic means which keep the extremities of the slides in contact with the corresponding tracks.Movement of the plate in one direction causes the slide which is downstream in respect of the direction of movement to be lowered in proportion to the amount by which the former is moved.

Abstract: In a method of determining and correcting the length of a piece of knitting eing produced on an electronically controlled flat knitting machine, the particular length of the piece of knitting which is being produced is continuously monitored by means of a sensor which supplies a value for the determined actual length to a control circuit where the value is compared with an instantaneous, programmed desired length value, and the determined real length value and the result of the comparison are used to control the stitch length in the following courses and/or the shape and/or type of knitting and pattern of the rest of the piece of knitting. by this means it is possible to produce constant-length pieces of knitting of the same shape, independently of changes in the technical knitting parameters, and controlled by the determination of the relevant actual knitted length of the piece of knitting.

Abstract: A carriage 14 is reciprocable along a needle bed of a flat knitting machine and carries a needle cam. A pair of stitch cams 12 and 13 are adjustably supported by the carriage 14 and are disposed so as to trail behind the needle cam in alternate strokes of the carriage, respectively. An adjustment mechanism 11 includes a stepping motor 38 (FIG. 3) which adjusts the trailing stitch cam 12 or 13 not only at the beginning of the respective stroke but also during the course of the stroke itself, thereby enabling the stitch density to be varied within each row of the knitted article as well as from row to row.

Abstract: A method of adjusting the knitting densities of respective courses when a flat knitted fabric is to be produced. The knitted yarn length having been used in the reference section is compared in the subsequent knitting operation with the reference yarn length to actuate the knitting density drive unit on the basis of the compared values so that the knitting cam is so rose or lowered as to increase or decrease the knitting density and the comparisons of the reference yarn length and the knitted yarn length are compared until the two lengths become coincident.

Abstract: A flat knitting machine includes a device for adjusting the retractor elets for the needles in the cam systems on the carriage of the machine for the setting of the stitch tension. In order to simplify the tension adjusting mechanism and simultaneously to produce a sensitive setting mechanism, there is provided on the carriage a single electrical stepping motor, with position sensor, for counterbalanced adjustment of the leading and of the trailing retractor elements of each cam system.

Abstract: A flat knitting machine comprises a needle bed and a carriage traversible along the needle bed. Stitch cams presettable in a plurality of different positions according to a desired knitting pattern are provided, and an adjustably positioned ramp in the needle bed fixed to a slide is adapted to displace a cooperating stitch cam into a selected position. Means are provided on the carriage for clamping the stitch cam in the position to which it has been displaced by the ramp and a slide to which the ramp is attached is raisable by control cam means preceding knitting cams in the carriage.

Abstract: A brassiere fashioned from a circularly knit fabric blank has a central panel between the breast cups that has a greater resistance to stretching than the remainder of the body of the brassiere. The brassiere preferably is formed from a blank that is knit to have two pairs of breast cups that are arranged in mirror image about a fold region at which the blank is folded to place one set of breast cups in overlying relationship with the other set of breast cups such that the resulting brassiere is a two-ply structure. The brassiere can be formed in either non-underwire or underwire form. When included, the underwires are attached either to an exterior side of one of the plies, or alternatively between the plies. The blank can be circularly knit as a two-ply tubular structure similar to a long turned welt.