Rieter Machine Works, Ltd.

Siemens Schweiz Ag

Reiter Machine Works, Ltd.

Siemens Mobility Gmbh

Walter Ackeret

Gian-Carlo Mondini

Rudolf Herrmann

Andreas Infanger

Giancarlo Mondini

Heinz Clement

Hansulrich Eichenberger

Hans-Ulrich Eichenberger

Natalie Bieri

Jon Felix

A lock bearing for a points setting arrangement has a lock bearing screw penetrating a foot of a setting tongue and a spring package arranged between the foot and the screw head of the screw. Therefore the lock bearing screw can be tightened with a relatively narrowly definable torque range and still has the rotation reserve to bring the position of the head of the lock bearing screw into line with a hole in a safety plate mapping the screw head which then, upon being inserted as previously known, latches in place over the head of the lock bearing screw. An alternative embodiment has a lock bearing with a lock bearing screw penetrating a foot of a setting tongue and an anti-rotation ring enclosing the head of the lock bearing screw in an annular, force-fitted manner with an outer toothing and a safety plate matching the outer toothing.

Pawl lock with closure clamp screw

A lock bearing for a points setting arrangement has a lock bearing screw penetrating a foot of a setting tongue and an anti-rotation ring enclosing the head of the lock bearing screw in an annular, force-fitted manner with an outer toothing and a safety plate matching the outer toothing. It therefore is possible to tighten the lock bearing screw within a small torque range and only to have to align the lock bearing screw with the pitch of the outer toothing. Therefore if, for example, the outer toothing has 36 teeth, the lock bearing screw only need to be aligned within a range of maximum 10&#xb0;. The anti-rotation ring functions like an adapter for the toothing mass and contributes to the fact that no modifications need to be carried out on the remaining construction of the lock bearing, which is advantageous as regards safety and approval considerations.

The combing machine as provided with a nipper jaw unit in which a nipper lip is provided on the top nipper plate to project in overlapping relation to the lower nipper plate for clamping a wadding therebetween. In a fully closed position of the nipper plates, with the nipper plates in contact, the nipper lip projects into the plane of the needles of the combing segment of the combed cylinder. However, the combed segment is provided with raised bearing segments to lift the nipper lip away from the needles over a safety clearance. In other embodiments, stops can be provided on the lower nipper to limit the movement of the top nipper towards the closed position.

Combing machine with means for limiting movement of top nipper

The batt or sheet to be combed is unwound by rotation of a lap roller (1) from a lap disposed thereon. The batt goes from the lap roller (1) by way of the lap feed plate (13) to a feed cylinder (10) mounted in oscillating nippers (6, 8). The feed plate (13) is connected by way of its bottom edge to the oscillating nippers (6, 8) and by way of its top edge to an element (16) which is rigidly secured to the frame and disposed near the lap roller (1). The plate (13) is made of plastics and has a reduced thickness between the two edges in a linear bend zone (18) which is parallel to the edges. The bend zone (18) extends over the whole width of the plate (13) and acts as an articulation. The plate (13) is therefore simple and economical to produce. It requires no hinge between the two edges; also, it is of reduced weight.

Lap feed plate connected to oscillating nippers in a combing machine

The comber has at least one combing head comprising an oscillating nipper unit with an intermittently rotatable feed roller for advancing the lap feed to be combed in the combing head. An electric motor is provided to rotate the fed roller and is energized with drive pulses by a control unit. The magnitudes and phases of the drive pulses are adjustable in the control unit relative to the movements of the nipper unit. Consequently, the angle through which the feed roller rotates during a single reciprocation of the nipper unit and the instant of time of such rotation can be readily adjusted steplessly even with the comber runner. Also, a closed-loop control is possible if the angle through which the feed roller rotates is so adjusted in the control unit by a controller that the yarn count, as determined continuously by a sensor of the combed sliver deliver by the combing head always remains substantially constant.

Comber with electric motor driven intermittent feed roller

The nipper has a lower jaw which carries a nipper plate and an upper jaw with a nipper plate carried by two arms. At least a part of this nipper, e.g. the lower nipper plate and the upper nipper plate are made from bonded fiber material. In this way, the unit is lighter than a unit which is made completely from metal.

Nipper for a combing machine using bonded fiber material

The combing machine comprises a detaching roll and an oscillating nipper unit comrising bottom and top nippers. The predetermined spacing for the oscillating nipper unit with respect to the detaching roll is adjustable, such predetermined spacing being the spacing between the front edge of a bottom-nipper plate and the nip location at the detaching roll when the oscillating nipper unit is in its front end position. A top comb is held in top-comb holders. Each top-comb holder on a top-comb bed is pivotably adjustable about an axis substantially parallel to the detaching roll, the top-comb bed being secured at the bottom nipper. Subsequent to an adjustment of the predetermined spacing, the top-comb holders are reset such that pins of the top comb are again located at the same predetermined distance from the detaching roll. The position of the axis is selected such that, subsequent to adjusting the predetermined spacing and resetting the top-comb holders, the depth of penetration and the angle of penetration of the top-comb pins are practically the same as they were before. The depth and angle of penetration of the top-comb of the top-comb pins are measured relative to a tangential plane extending to the detaching roll from the lap delivery line at the bottom-nipper plate. Consequently, no separate elevational resetting of the top-comb pins is required subsequent to the adjustment of the predetermined spacing and the resetting of the top-comb holders.

Growing community of inventors

Seuzach, Switzerland

Walter Ackeret