Abstract: Rolling assembly for packaging web material in a roll having a base member with concave arcuate feed surface defining an upwardly-extending ramp, first intermediate member movably coupled to base member, and top member moveably coupled to at least one of base member or first intermediate member, top member having a concave arcuate pressure surface facing feed surface of base member. The base member, first intermediate member and top member collectively forming an iris with a feed space, the iris moveable between a first condition and a second condition, and configured to receive web material along the feed surface and direct the web material upwardly toward the top member to form a roll within the feed space, the iris moving toward a second condition as the roll of web material increases in cross dimension against the pressure surface of the top member.

Abstract: Refill for a dispenser, with a material web wound to form a roll and at least one substantially axially adjustable bearing journal. The at least one substantially axially adjustable bearing journal is adjustable substantially axially outwards away from the roll starting from a defined inner end position in which it protrudes axially beyond the roll. A bearing unit for such a refill, and a dispenser for housing the refill and dispensing the material web are also provided.

Abstract: A dispenser for sheet materials is disclosed. The dispenser includes a housing and a front cover. The dispenser includes a first internal door configured to secure a first roll of sheet material in a dispensing position and a second internal door configured to secure a second roll of sheet material in a dispensing position. The first and second doors include first and second nozzles for dispensing sheet material. The dispenser is a centrally unwinding dispenser.

Abstract: Methods, systems, and apparatuses are disclosed for providing physical validation of for precluding improper installation and confirming appropriate installation of a consumable articles into a consumable article dispenser, and further monitoring the appropriate installation and consumption of a consumable article in real-time.

Abstract: An assembly for supporting a roll of sheet product with respect to a sheet product dispenser is provided including a mandrel configured to be positioned within a housing of the dispenser and a spindle. The spindle includes a spindle body positioned over the mandrel and configured to be received within a central opening of the roll. The spindle includes first and second sets of friction elements extending away from respective ends of the spindle body. Each friction element is configured to extend radially inward from the spindle body so as to provide a contact force against the mandrel when the spindle is installed on the mandrel. The contact forces applied against the mandrel may be designed to be constant irrespective of whether the roll of sheet product is installed on the spindle and/or if the inner surface of the central opening of the roll of sheet product has any inconsistencies.

Abstract: A core plug for supporting a roll of sheet product with respect to a sheet product dispenser is provided. The core plug may include a shell and a support. The shell may be positioned about a longitudinal axis of the core plug and configured to be at least partially inserted into a central opening of the roll of sheet product. The support may be movably attached to the shell and configured to engage a support feature of the sheet product dispenser such that the roll of sheet product is rotatably supported with respect to the sheet product dispenser. The support may be positioned at least partially within the shell, and at least a portion of the support may be configured to translate relative to the shell in the direction of the longitudinal axis of the core plug.

Abstract: An unwinder for a sheet material has a housing and has crosspieces arranged laterally in the housing. To ensure the functionality of the unwinder even in the case of relatively large winding cores or of relatively large rollers, the crosspiece is connected, in a releasable and non-releasable manner, to an accommodating element of which the surface-area portions, which correspond to the crosspiece, enclose the crosspiece and have accommodating surfaces for the product which is to be unwound.

Abstract: Methods are provided for operating a web medium supply for a printer and or operating a printer having a web medium supply to which any of a plurality of different cores can be mounted, each core having a web. In one aspect, a core data condition is detected indicating that an automatic core data acquisition process is to be executed and conditions are sensed from which a difference in the rotational positions of a first engaged surface at a first end of the core and a second engaged surface at a second end of the core can be determined. Data regarding the web on the core is determined based upon the sensed conditions.

Abstract: A reel dispenser includes a housing, a coupling associated with a reel and a mounting for removably mounting the coupling to the housing so that the coupling is movable between a mounted and a dismounted condition. The coupling includes a key. The mounting includes a lock arrangement which is movable between a locked condition and a free condition. The reel dispenser is arranged so that when the coupling is moved from the dismounted condition to the mounted condition, the key moves the lock arrangement to the free condition, permitting rotation of the coupling relative to the housing.

Abstract: A printer having improved operational features. The printer includes an articulating print frame assembly coupled to a top cover that is adapted to rotate out of the top cover to an open position and to rotate into the top cover to a closed position. When the print frame is in an open position, the top cover is prevented from rotating toward the bottom housing to a closed position. The printer may include at least one media support member with a media adjustment channel disposed therein, a media adjustment member slidingly disposed through each of the media adjustment channels, and a resilient member configured to apply friction between each of the media adjustment members and the corresponding media support member.

Abstract: An end plug to be inserted axially into the centre of an end of a roll of paper, includes a holding element adapted to hold and/or guide the end of the roll of paper in correct position in a dispenser. The end plug includes an outer sleeve having an outer end and an inner end and the holding element is connected to the sleeve by elements allowing the holding element to be axially moved from a first position to a second position, in which the holding element protrude outwardly from the outer end of the sleeve, the holding element being releasably held in the first position when moved thereto. A roll of tissue paper including such an end plug and a dispenser provided with such a roll are also disclosed.

Abstract: Tools, devices and methods of modifying existing toilet paper and paper towels that do not have inner cardboard tubes with insert adapters to modify the nondefined openings in the rolls. The adapter tools can slide onto the ends of the spindles and have narrow tip exteriors, and/or have threaded exterior surfaces, and the like. Inserts can have spiral cut grooves or spiral raised ribs, with a chamfered tip end and an enlarged base end.

Abstract: An end plug to be inserted axially into the center of an end of a roll of paper, includes a holding element adapted to hold and/or guide the end of the roll of paper in correct position in a dispenser. The end plug includes an outer sleeve having an outer end and an inner end and the holding element is connected to the sleeve by elements allowing the holding element to be axially moved from a first position to a second position, in which the holding element protrude outwardly from the outer end of the sleeve, the holding element being releasably held in the first position when moved thereto. A roll of tissue paper including such an end plug and a dispenser provided with such a roll are also disclosed.

Abstract: Web medium supplies for a printer that uses a web medium on a core and printers are provided. In one aspect, the web medium supply has a frame with a first mounting support and second mounting support that are positioned along an axis of rotation. A first core mounting supports the core for rotation around the axis of rotation and a second core mounting supports the core for rotation around the axis of rotation. Rotation of the core is controlled by a first force applied to the first core mounting and a second force applied to the second core mounting that are both less than a third force that is sufficient to drive an alternative core against an inertial load of the core and web from one driven end.

Abstract: A retention mechanism in a dispenser for retaining an exchangeable roll of material, the retention mechanism includes a housing including a front wall. An insertion slot for a bearing pin of an end plug of the exchangeable roll extends along the front wall. A cam lock is arranged in the housing so as to be rotatable in a plane which is parallel to the front wall and to the direction of extension of the insertion slot. The cam lock includes a retaining member which is movable between an open position and a locked position by rotating the cam lock. When the retaining member is in the open position, the bearing pin can be inserted into the insertion slot, and when the retaining member is in the closed position, the bearing pin is retained in a locking section of the insertion slot.

Abstract: A paper roll holder formed of a base plate for mounting to a vertical or horizontal surface; two-spaced apart side plates mounted perpendicularly to the base plate; each comprising a slot for mounting a pivoting peg therein and two mounting holes penetrating by a dowel pin; the pivoting peg further comprising a sloped, elongated groove formed in a top surface of the peg to allow the mounting of a torsion spring therein, and a mounting hole in the end with the deep groove, and a dowel pin penetration the two mounting holes in the side plate, the mounting in the pivoting peg and an aperture through a center of the torsion spring.

Abstract: Web supply systems and printers are provided. In one aspect a web supply system has frame with a first mounting support and second mounting support that are positioned along an axis of rotation and separated by a separation distance during the supply of web, a first core mounting having a first surface that is rotatably supportable by the first mounting support for rotation about the axis of rotation and a first engagement end to provide support for a first end of a core, and; a second core mounting having a second surface that is rotatably supportable by the second mounting for rotation about the axis of rotation and a second engagement end to provide support for a second end of the core. The mountings support a core that has one or more surface at an angle that corresponds to one or more angle of a surface on the mountings.

Abstract: An automatic product dispenser determines if the roll loaded into the dispenser is approved for use with the dispenser. The core of a roll contains a feature that alters an electromagnetic field created proximate the core. The alteration of the electromagnetic field may then be used to determine if the core, and thus the roll, is usable with the dispenser. The feature is designed such that it is damaged once product is completely dispensed from the roll thereby preventing replenishment and reuse of a spent roll.

Abstract: Embodiments of the invention provide pool cover components that are more resistant to corrosion than current cover assemblies. Certain embodiments provide polymer hubs that separate potentially corrosive-prone components from one another. The polymer hubs isolate dissimilar metals, preventing them from conducting electricity and speeding the corrosion process. Other embodiments provide a coating on one or more of the components to prevent electrical conductivity.

Abstract: A retention mechanism (40) for a dispenser for retaining an end plug (10) of an exchangeable roll of material includes an insertion slot extending between a receiving end (54) and a seating region (50) for inserting a bearing pin (22) of the end plug. The bearing pin has at least a first portion (26) with a first diameter, and a second portion (28) with a second diameter smaller than the first diameter. A pin discriminator (46) is at least at the receiving end and narrows the receiving end so only bearing pins can enter the receiving slot which have a maximum outer diameter in the second portion which equals the second diameter. A rejecting slot (48) extends from the seating region and is dimensioned so only bearing pins with a predetermined maximum diameter in the first portion which is smaller than the first diameter will enter the rejecting slot.

Abstract: A solid roll (1) of flexible web-shaped material, such as paper or nonwoven material, being provided with at least one adapter (6). The adapter (6) includes first attachment element (7) for attachment to the solid roll (1) and second attachment element (8) for attachment to a dispenser. The first attachment element (7) comprises at least one elongated attachment member (9), which is adapted to be arranged extending in or near the center line (5) of the solid roll (1). Furthermore, the at least one elongated attachment member (9) is arranged to fixate the adapter (6) to the flexible web-shaped material of the solid roll (1) through frictional engagement.

Abstract: A roller for moving, rolling and unrolling rolls of sod. The roller is generally comprised of a top portion including a side shift actuator and at least one attachment member for attachment to a vehicle, preferably a skid steer. The roller also includes a rotary actuator with a shaft, slidably attached to the top portion. A main frame consisting of a top member, side member, base member and an end gate, extends down from the shaft of the rotary actuator. The end gate of the main frame is configured to pivot open and closed. The main frame is configured to rotate with the shaft.

Abstract: The disclosure herein provides a roll support system for a rolled web material dispenser which ensures that the proper rolled web material is installed in the dispenser and that the rolled web material is properly aligned in the dispenser. The system limits the size of the core or core plug that can be supported by the support in a towel dispenser. Also disclosed is a system to provide different sized roll caps and supports to ensure that the dispenser is dispensing web material which the dispenser as designed to dispense.

Abstract: The end piece for a roll of wiping material comprises a cylindrical bearing surface tightly fitted into a core that supports the roll, a transverse flange that protrudes from the cylindrical bearing surface and rests against an opposite-facing surface of the core and the roll, and an axially extending neck that has a head with an internal hole and a hollowed-out section forming a guide groove. The hollowed-out section is located between the head and the cylindrical bearing surface. The head and part of the hollowed-out section are deformable and internally provided with a hole that creates deliberate fragility facilitating, by crushing, their deformation as the core and the end piece are extracted from an accommodating side plate. After the core and end piece have been extracted, the head of the end piece is, in its final state, permanently deformed and cannot be reused.

Abstract: An end plug for a roll of material to be inserted into a retention mechanism, includes a receiving portion to fit into a hollow core of the roll of material; and a bearing member to fit into the retention mechanism. The bearing member includes a bearing pin having a counter surface facing the receiving portion; and a locking surface for locking the end plug in an end position in the retention mechanism, the locking surface being arranged between the receiving portion and the bearing pin, the locking surface having at least one portion inclined with respect to the longitudinal axis of the bearing pin by an angle to the longitudinal axis of the bearing pin in the range of 117° to 141°. A retention mechanism in a dispenser for retaining the end plug of an exchangeable roll of material is also disclosed.

Abstract: A reel changer is usable for supporting a reel of material that is wound on a winding sleeve. The reel holder includes a carrier journal and a plurality of driver elements. These driver elements are arranged such that they engage in a front of the winding sleeve. The number of these driver elements which can engage in the front of the winding sleeve can be varied.

Abstract: A system for dispensing a strip of absorbent product in the form of a roll, of the type comprising a roll, formed of a wound strip of absorbent product, axially delimited by a first lateral side and a second lateral side, a dispenser for dispensing the absorbent product in the form of a roll, of the type comprising a frame and a cover which is mounted such that it can move, means for holding and guiding the rotation of the roll with respect to the frame, which means comprise a first holding element for holding the roll and which is borne by the frame, and a second guiding and positioning element which is borne by the cover such that it is fixed in terms of rotation and which can be housed axially in a lateral housing of the roll, characterized in that the second guiding and positioning element comprises at least one projecting portion on which an internal wall of the second housing is able to slide for guiding the rotation of the roll if the roll is a complementary roll, and which is able to dig into the stri

Abstract: The insert for roll paper products is pliable, preferably scent-impregnated, foam material that can be wrapped around a dispensing bar of a rolled paper dispenser, and resiliently grips the bar while adding friction to the total dispensing system. The dispensing bar and insert combination is then slid through the hollow core of a rolled paper product. The sleeve has dentate ends that extend beyond the ends of the paper roll. When the product core is rotated while paper is being dispensed, the passage of air through the dentate ends helps to dispense and distribute the scent through the environment proximate the paper dispenser. Moreover, the resilient foam insert provides friction between the paper roll and the foam structure, while also adding friction between the foam structure and the dispensing bar. This feature acts as a brake to prevent excess rollout of the rolled product when being dispensed.

Abstract: An end plug for a roll of material to be inserted into a retention mechanism, includes: a receiving portion for insertion in the roll, an end face for contacting the mechanism and a bearing member for insertion into the mechanism. The bearing member includes a bearing pin having a counter surface facing the end face and at least one portion for locking the end plug in an end position in the mechanism, the locking portion being positioned within a zone defined by a first surface extending towards the end face from an intersection position with the bearing pin, the first surface being inclined with respect to the longitudinal axis of the bearing pin by an angle of 117 and a second surface extending towards the end face from the intersection position, the second surface being inclined with respect to the axis of the bearing pin by an angle of 141.

Abstract: A recording-paper-roll supporting device includes first and second members. The first member includes an insertion portion, a supporting portion at an end of the insertion portion, and a support shaft at an end of the supporting portion. The supporting portion includes an outer peripheral surface, insertion-portion-side cam surfaces at different phases and heights, a collar portion, support-shaft-side cam surfaces at different phases and heights, and a cut section. The second member includes a cylindrical portion, a flange portion, a cam follower, and an engaging claw. When the outer peripheral surface is inserted along the inner peripheral surface and the cam follower and the engaging claw are selectively engaged with the insertion-portion-side cam surfaces and the support-shaft-side cam surfaces, the engaging claw is elastically deformed and generates a reactive force which presses the cam follower so that the second member is positioned on the supporting portion.

Abstract: An endpiece which forms an integral part of a mandrel used to support a roll of material engages a guide. The endpiece comprises a cylindrical part which can be inserted into the mandrel, a collar which rests against a facing surface of the endpiece, and a projecting attachment. A guiding and retaining groove is provided along the length of the projecting attachment to form a guide path. A cooperating guide is provided on a bracket that supports the roll of material. The guide is disposed on an inner side of the bracket and comprises slightly-projecting flats which form and define a channel to receive the projecting attachment of the endpiece as so enable the endpiece to be inserted and retained therein. The channel extends into a part for receiving the endpiece following the insertion thereof.

Abstract: A rolled sheet support mechanism has two spaced-apart guide plates for accommodating therebetween a rolled sheet. A displacement member carries a pair of opposed, axially slidable bobbins and pivots between an attachment position wherein the rolled sheet can be inserted between and held by the bobbins and an accommodation position wherein the rolled sheet is ready for use. A pair of biasing members compressed between the guide plates and bobbins elastically press the bobbins to the rolled sheet. The spacing between the guide plates is larger in the region of the attachment position than in the region of the accommodation position so that when the displacement member pivots from the attachment position to the accommodation position, the biasing members slide along the guide plates and further compress to increase the force at which the bobbins press against the rolled sheet.

Abstract: A lock mechanism for a dispenser in combination with an exchangeable roll of material is provided, wherein the roll includes at least one end plug with a bearing pin for mounting the roll to the lock mechanism. The lock mechanism comprises a lock housing with a guide slot for insertion of the bearing pin. The guide slot has a first section with a first width and a second section with a second width which is smaller than the first width. First and second sections are arranged in a direction perpendicular to the longitudinal extension of the guide slot and in a longitudinal direction of the bearing pin. A sliding element is mounted to the lock housing and movable between a first position closing or narrowing the width of the guide slot and a second position opening the guide slot. A lock element is mounted to the sliding element and is rotationally movable about an axis of rotation between a locked position and an unlocked position.

Abstract: The end piece for a roll of wiping material comprises a cylindrical bearing surface tightly fitted into a core that supports the roll, a transverse flange that protrudes from the cylindrical bearing surface and rests against an opposite-facing surface of the core and the roll, and an axially extending neck that has a head with an internal hole and a hollowed-out section forming a guide groove. The hollowed-out section is located between the head and the cylindrical bearing surface. The head and part of the hollowed-out section are deformable and internally provided with a hole that creates deliberate fragility facilitating, by crushing, their deformation as the core and the end piece are extracted from an accommodating side plate. After the core and end piece have been extracted, the head of the end piece is, in its final state, permanently deformed and cannot be reused.

Abstract: A recording-paper-roll supporting device includes first and second members. The first member includes an insertion portion, a supporting portion at an end of the insertion portion, and a support shaft at an end of the supporting portion. The supporting portion includes an outer peripheral surface, insertion-portion-side cam surfaces at different phases and heights, a collar portion, support-shaft-side cam surfaces at different phases and heights, and a cut section. The second member includes a cylindrical portion, a flange portion, a cam follower, and an engaging claw. When the outer peripheral surface is inserted along the inner peripheral surface and the cam follower and the engaging claw are selectively engaged with the insertion-portion-side cam surfaces and the support-shaft-side cam surfaces, the engaging claw is elastically deformed and generates a reactive force which presses the cam follower so that the second member is positioned on the supporting portion.

Abstract: A spindle sleeve for a sheet product dispenser is disclosed having a body with a first end, a second end, an inner diameter, an outer diameter, and a central longitudinal axis. The body includes a first portion disposed proximate the first end, a second portion disposed proximate the second end, and a third portion disposed between the first and second portions. The third portion has a U-shaped cutout defining a cantilevered flexible finger oriented to align with the central longitudinal axis, and the first and second portions have unbroken surfaces of the body around the perimeter of the body at the first and second ends, respectively. The finger has a dorsal-type fin extending perpendicular to the outer surface of the finger.

Abstract: An adapter (1) for a coreless or solid roll (R) of hygiene paper includes a first end (2) adapted to be attached in a dispenser and a second end (3) adapted to be attached to a side of a coreless or solid paper roll (R). The second end (3) of the adapter (1) includes a planar surface provided with an adhesive (4). A coreless or solid roll (R) of hygiene paper provided with such adapters, and a method for attaching adapters to a solid or coreless roll, are also disclosed.

Abstract: A holder appliance suitable for axially supporting a rolled product is disclosed having a holder and a rigid or semi-rigid root section. The holder includes a body having first and second ends and an engagement surface disposed therebetween contactable with a planar end surface of the rolled product, and a protrusion extending from the engagement surface toward the rolled product, the protrusion being engageable within an opening in the planar end surface. The root section is disposed at the first end and a tab disposed at the second end of the body. The tab extends radially away from the axis of the rolled product and axially away from the engagement surface. The tab has a greatest radial portion displaced from a plane defined by the engagement surface in a direction opposite to a direction in which the protrusion is extended. The tab has a contour that mirrors a user's thumb.

Abstract: The invention provides a paper roll, a bushing for a paper roll and a combination of a paper roll with a dispenser. The paper roll comprises a hollow paper roll core with two opposite extremities. The bushing has a cylindrical body press-fitted into at least one of the extremities of the paper roll core and the bushing further comprises a circular end wall frangibly fixed to a first end of the body and closing the extremity of the paper roll core. The end wall is provided with a central pin-receiving hole. The end wall is designed to breaks off when removing the paper roll from the dispenser. Thus, the bushing cannot be reused. Therefore, this invention participates in the enhancement of a quality control system.

Abstract: A system for dispensing a strip of absorbent product in a coreless roll, of the type including a roll and a dispenser for dispensing the absorbent product, of the type including a first guiding and positioning element which can be received in a first housing of the roll and including a second holding element which can be received in a second housing of the roll, wherein the first guiding and positioning element includes a portion of revolution with a cross section decreasing towards the inside of the dispenser, which can be received in the first associated housing of the roll.

Abstract: A wind-off assistance device for coreless film rolls comprises two receiving element being insertable into a coreless film roll. The receiving element are connected to each other via a cylindrical connection element. The two receiving element are surrounded by a ring-shaped bearing so that the film roll is rotatably connected to the receiving element. A second bearing ring is located between the cylindrical connection element and the receiving element so that the connection element can be rotated on the receiving element.

Abstract: Disclosed are a printer and a stacker and methods. The printer prints selectively on one or both sides of a printable web and sheets or labels are cut from the web and stacked in the stacker. The printer has an unwind mechanism that accepts and holds web rolls of different widths in center-justified relationship with respect to a print head. The printer has a spindle for mounting an ink ribbon core with a detent or latch for center-justifying the ink-ribbon with respect to the print head. A spindle assembly has two latches for counter-justifying a wide range of cores of different widths.

Abstract: Disclosed are a printer and a stacker and methods. The printer prints selectively on one or both sides of a printable web and sheets or labels are cut from the web and stacked in the stacker. The printer has an unwind mechanism that accepts and holds web rolls of different widths in center-justified relationship with respect to a print head. The printer has a spindle for mounting an ink ribbon core with a detent for center-justifying the ink-ribbon with respect to the print head.

Abstract: A printer using a paper supply roll is provided with a capability for conversion between snap-in loading of the paper roll, in which the roll is snapped into place with the tubular core of the paper roll being held to rotate between a pair of bearing members, and drop-in loading, in which the roll is dropped onto a support surface, against which the periphery of the roll then turns. In a first version, each of the bearing members has a flat side and a spherical side, which is turned inward for snap-in loading and outward for drop-in loading. In another version, the bearing members are moved inward for snap-in loading and outward for drop-in loading.

Abstract: An adapter for dispensing coreless or solid rolled product from an existing recessed roll product dispenser is disclosed. The adapter also allows for rolled product to be dispensed from the existing recessed dispenser where the rolls being dispensed may have a larger diameter than allowed by the recessed dispenser without the adapter. A system for dispensing coreless or solid rolled product from an existing recessed dispenser is also disclosed.

Abstract: A paper holder is attachable to a recording paper storage chamber of a printer. The paper holder has a loading lid to cover a part of the recording paper storage chamber. And a press mechanism to press the rolled recording paper to a paper-supply roller is incorporated. The press mechanism consists of a first press plate and a second press plate. In receipt of a slight urge by a torsion coil spring, the first press plate presses the rolled recording paper to the paper-supply roller. On closing the loading lid of the recording paper storage chamber, the hold-down section of the loading lid presses the second press plate, which compresses a compression spring with the first press plate, to apply its counterforce to the first press plate.

Abstract: A mandrel is utilized to support a roll of material. The mandrel includes a retaining element, which can be placed on an inner circumference of a roll of material, and at least one carrier element which transmits a torque between the mandrel and the material roll. The carrier element can be engaged with the roll of material in a non-positive manner.

Abstract: A printer using a paper supply roll is provided with a capability for conversion between snap-in loading of the paper roll, in which the roll is snapped into place with the tubular core of the paper roll being held to rotate between a pair of bearing members, and drop-in loading, in which the roll is dropped onto a support surface, against which the periphery of the roll then turns. In a first version, each of the bearing members has a flat side and a spherical side, which is turned inward for snap-in loading and outward for drop-in loading. In another version, the bearing members are moved inward for snap-in loading and outward for drop-in loading.

Abstract: A dispenser for solid rolls of web material, includes a frame, a cover connectable to the frame, to together with the frame define a volume for storing a roll of web material from which web material can be dispensed, a frame roll support projection, and a cover roll support projection, the two roll support projections being arranged to enable rotatably engaging the roll of web material in or near its rotational axis, an outlet opening in the dispenser, to enable web material to be withdrawn from the dispenser, where at least one of the frame or cover roll support projections is rotatably mounted in a bearing.

Abstract: Tailstock device to be applied to the cone-holding arm (26) of collection units (3) of spinning stations (1) of open-end spinning machines wherein the quill is engaged by a toothed tailstock provided with a skew pyramidal toothing on the face presented to the base of the quill.