Patents Assigned to Sipra Patententwicklungs-und Beteiligungsgesellschaft
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Patent number: 4848104Abstract: In a multisystem knitting machine with longitudinally displaceable needles and also displaceable and pivotable sinkers which are alternately positioned in a carrier, an adjusting shaft and an adjusting head for each cam system are positioned on a movable slide on which a plunger of a central adjusting device acts so as to move that slide.Type: GrantFiled: October 6, 1987Date of Patent: July 18, 1989Assignee: Sipra Patententwicklungs-und Beteiligungsgesellschaft mbHInventor: Ernst-Dieter Plath
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Patent number: 4759426Abstract: A pressure oil lubricating device, particularly for knitting machines, comprises an oil storing container, at least one oil spraying nozzle, an electromagnetically actuatable oil pump having a suction side connected with the oil storing container and a pressure side connected with the at least one oil spraying nozzle, a pressure conduit connecting the pressure side of the oil pump with the at least one oil spraying nozzle and being branched into several branching pressure conduits, a plurality of electromagnetic valves each opening and closing a respective one of the branching pressure conduits, an oil distributing chamber with which each of the branching pressure conduits is connected, a plurality of nozzle supplying conduits also connected with the oil distributing chamber and each provided with a connecting nipple with a return valve, and control unit provided with a microprocessor and operative so as to activate automatically and arbitrarily at will a driving of the oil pump and a successive opening of thType: GrantFiled: June 25, 1987Date of Patent: July 26, 1988Assignee: Sipra Patententwicklungs-und Beteiligungsgesellschaft mbHInventor: Heinz Brunner
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Patent number: 4741181Abstract: A knitting machine for producing mesh products has a needle carrier provided with a plurality of guiding grooves having an upper groove end and a base, a plurality of needles and a plurality of plate members alternatingly arranged in the guiding grooves so that the plate members are longitudinally displaceable and turnable in the guiding grooves and have a rear side abutting against the base of the guiding grooves. The knitting machine further has a device for cleaning at least one location and supplying an air stream which raises in the guiding grooves upwardly toward the groove end into a space formed between the rear side of the plate members and the base of the guiding grooves and limited from below by a turning region by the plate members.Type: GrantFiled: September 8, 1986Date of Patent: May 3, 1988Assignee: Sipra Patententwicklungs-und Beteiligungsgesellschaft mbHInventor: Ernst-Dieter Plath
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Patent number: 4738652Abstract: A belt drive includes a driven shaft and two belt pulleys supported on the shaft for guiding toothed belts. Each belt has a toothed portion and a smooth untoothed portion. Each pulley is a multi-part element and includes a first portion having a toothed crown engageable with the toothed portion and a second portion having a smooth supporting surface for the non-toothed part of the belt. The first and second portions of the pulley are turnable relative to each other. The first portion of the pulley cooperating with the belt is the form-locking manner is rigidly connected to the shaft whereas the second portion for a friction-type connection with the belt is rotationally supported on the shaft and relative to the first portion.Type: GrantFiled: December 5, 1986Date of Patent: April 19, 1988Assignee: Sipra Patententwicklungs-und Beteiligungsgesellschaft mbHInventor: Ernst-Dieter Plath
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Patent number: 4691535Abstract: A yarn-selecting device of a knitting frame comprises a mechanism for joig the yarn being knitted to a selected yarn to be knitted, which mechanism comprises a swivelling finger for forming a closed loop of the yarn to be knitted. Two levers form an open loop of the yarn being knitted and insert it through the closed loop of the yarn to be knitted on the finger. A hooking lever is provided for pulling the yarn to be knitted through the open loop of the yarn being knitted, after which the open loop-forming lever is retracted thus removing the closed loop from the finger, and the yarn being knitted is cut by a knife while the end of the yarn to be knitted is released from a gripper.Type: GrantFiled: November 19, 1985Date of Patent: September 8, 1987Assignees: Mayer & Cie. GmbH & Co., Sipra Patententwicklungs - und Beteiligungsgesellschaft mbHInventors: Remi Cottenceau, Francois Fischer, Simon Arieh
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Patent number: 4681272Abstract: An arrangement for positively supplying elastomer fibers in a textile machine, comprises a device supplying a non-elastic filament fiber, a drive for driving the non-elastic filament fiber supplying device, a yarn spool for an elastomeric filament, a freely rotatable holder for the yarn spool, a drive roller arranged so that the yarn spool abuts against the drive roller over a predetermined abutment length, the drive roller being connected with the drive means and having a length which is greater than the predetermined abutment length, the drive roller having an axis extending in a predetermined plane, and a support which supports the spool holder and is longitudinally displaceable along a line such that the line or its projection extends in the plane of the axis of the drive roller and at an acute angle relative to the axis of the drive roller.Type: GrantFiled: April 16, 1986Date of Patent: July 21, 1987Assignee: SIPRA Patententwicklungs-und Beteiligungsgesellschaft mbHInventors: Heinz Brunner, Stefan Seeger
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Patent number: 4584851Abstract: A knitting machine has plate members and needles movable opposite to one another during sinking of the threads. The plates are of a short length and located between guide webs of a separate plate carrier, whereas the needles are longitudinally displaceable between guide webs of a needle carrier with needle shafts sliding on the free end surfaces of the guide webs of the plate carrier. Control curves for the needles and the plate members are formed so that the withdrawal movement of a needle and at least at a half needle pitch prior to the opposite driving out movement of a plate member preceding in the working direction.Type: GrantFiled: March 26, 1984Date of Patent: April 29, 1986Assignee: Sipra Patententwicklungs-und BeteiligungsgesellschaftInventor: Ernst-Dieter Plath
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Patent number: 4535608Abstract: A circular knitting machine for producing one-face plush webs of main threads and plush threads has a plurality of needles, a plate ring provided with plate members, and a plurality of cam members for controlling the longitudinal movement of the needles and the transverse movement of the plate members, wherein the needles and the plate members are arranged so that each of the needles cooperates with two parallel and separately controlled plate members movable relative to one another, of which one of the plate members has a slot for receiving a main thread and a stepped back for supporting a plush thread, and the other of the plate members has a thread placing edge limiting the effective length of the slot of the one plate member.Type: GrantFiled: January 20, 1984Date of Patent: August 20, 1985Assignee: Sipra Patententwicklungs-und Beteiligungsgesellschaft mbHInventors: Ernst-Dieter Plath, Dieter Klinger
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Patent number: 4408118Abstract: Input pulses generated by rotation of a knitting machine are used to produce output pulses that energize needle selection mechanisms therein. A control system operates in such a fashion as to advance the output pulses with respect to the input pulses, while keeping pulse frequency constant. The control system is clocked, and a forward counter is programmed with a number which is dependent upon knitting machine speed, and which number is derived from the number of clock pulses intervening between subsequent input pulses. After the forward counter has been so programmed, it is clocked by the clock until the appropriate number of clock pulses has been counted. At that time, a pulse is generated by reverse counter and a monostable multivibrator, which is used to produce an output pulse according to a program stored in a PROM. Provision is made to bypass the counter when the knitting machine is operated at low speeds.Type: GrantFiled: July 7, 1980Date of Patent: October 4, 1983Assignee: Sipra Patententwicklungs- und Beteiligungsgesellschaft mbHInventors: Gerhard Grozinger, Hartmut Schindler, Franz Schmid
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Patent number: 4332150Abstract: A knitting machine provided with patterning mechanisms responsive to pattern-control signals is caused to produce a non-repeating pattern by generating the pattern-control signals randomly, using a random signal generator not operating in synchronism with machine operation and generating potential pattern-control signals, from which actual pattern-control signals are derived in synchronism with machine operation. Although the pattern-control pulses are randomly generated, the overall character of the pattern produced can be altered by adjustment of the random signal generator to thereby alter the probabilities in the random generation of potential pattern-control signals. Also, pattern restraints are imposed upon the randomly produced pattern-control signals in both the horizontal and vertical directions, involving the number of consecutive stitches of a certain type that are to be permitted to adjoin in one course and in one wale, this being selectable in a manner not detracting from randomness.Type: GrantFiled: May 30, 1979Date of Patent: June 1, 1982Assignee: SIPRA Patententwicklungs-und Beteiligungsgesellschaft mbHInventor: Gerhard Grozinger
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Patent number: 4241478Abstract: Apparatus for mechanically crimping and shrinking textile webs mainly comprises an elongated chamber through which the textile web is moved in a predetermined direction, at least two endless crimping grates arranged in said chamber and each including an endless link chain and a plurality of crimping plates projecting equally spaced from each other in a direction transverse to the chain from the latter and in which each endless chain is guided over a pair of guide rolls so that each chain has one run moving in the direction of movement of the web through the chamber and another run moving in the opposite direction. The apparatus includes further heating means having a heated smooth guide surface opposite said one run of each endless chain and said textile web is passed between the respective heated guide surface and the outer ends of the crimping plates on the one run. The chains on successive crimping plates are driven in opposite directions and preferably at speeds which can be steplessly adjusted.Type: GrantFiled: January 17, 1979Date of Patent: December 30, 1980Assignee: SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbHInventor: Siegfried Nurk