Abstract: A fastening sealing member configured to fasten siding boards to a building framework, including a base plate portion having a flat rear surface, spacing portions at left and right ends of the base plate portion, each of which has a front face forward from the base plate portion, a central horizontally rising plate portion projecting forwardly in the horizontal direction from the base plate portion, a central front plate portion in the vertical direction at a front end of the central horizontally rising plate portion, supporting portions projecting forwardly in the horizontal direction from the base plate portion at left and right sides of the central horizontally rising plate portion, an upper-board engagement portion bent upwardly from the supporting portion, a lower-board engagement portion bent downwardly from the supporting portion, and a connecting portion in the vertical direction between the upper-board and lower-board engagement portions.

Abstract: A fastener assembly for securely fastening a decorative panel in spaced relation to a support backing includes a base member adapted to be operatively mounted to the decorative panel, a carrier member, and a linking member operatively extending between the base member and the carrier member such that the base member is disposed spaced from the carrier member. A fastening medium is supported by the carrier member and adapted to operatively interconnect the carrier member to the support backing. The linking member operatively interconnects the base member and the carrier member in articulating fashion such that the base member is transversely moveable relative to the carrier member.

Abstract: A coupling member, for coupling profile bars having longitudinal grooves covered by profile walls so that a first profile bar is butt-jointed to a side wall of a second profile bar. The coupling member is inserted into the grooves aligned in one plane. The coupling includes an elongated counter holder insertable into the longitudinal groove of the first profile bar, and a tension tie incorporating a shaped head that is insertable into the longitudinal groove of the second profile bar and engages the profile walls from behind, and a shaft connected to the counter holder. The counter holder is rotatable on the tension tie by a pivot that engages the profile walls and is provided on one side with a tooth system that penetrates the groove bottom when the coupling member is tightened by rotating the counter holder.

Abstract: A modular dovetail joint bracket includes a planar first flange, a planar second flange at a right angle to the first, and a dovetail-shaped tenon projecting from the second flange, adjacent the outer apex of the first and second flanges. The tenon has slots along one of its tapered faces. An alternative embodiment of the bracket has a truncated second flange.

Abstract: An aircraft and method of manufacture therefor are provided. A fuselage is formed of composite materials and in at least two sections, each section having an integral, internal longeron spanning a length of the sections. The sections are connected by slidingly engaging a male dovetail connector on a longeron of one section with a female dovetail connector on a longeron of another section. Outer edges of the sections of the fuselage have tongue-and-groove connectors that engage to fasten the edges of one section to the edges of another section as the sections are slidingly connected. Fasteners are inserted through the longerons, and other fasteners are inserted through the connectors of the outer edges.

Abstract: A connector, freely insertable and removable to and from T-slots of aluminum profile extrusions after assembly of a frame constructed from a two profile extrusions is provided. The connector is orientable for retention in the slot, but no other retaining fasteners are required between a connector and a profile extrusion. The connectors provide points of support for objects to be mounted on a framework constructed from a plurality of extrusions. The supported objects in turn brace the accessories in the T-slots by locking the rotational orientation of the connector with respect to the profile extrusion.

Abstract: The invention is a glazing panel wall system having unique and advantageous glazing clips. The clips, several different embodiments of which are described, serve to hold the glazing panels and frame member face covers in place. The system comprises the various glazing clips; interconnected frame members, each frame member having recesses adapted for containing glazing panels and a channel adapted for engaging the clips; and face covers which are placed over the front face of the frame members. The invention thus provides a convenient, time-saving, and very effective way of constructing a glazing panel wall.

Abstract: A passage communication member is fitted in a first passage in a structural member, and has a head which is mounted in a slot in another structural member. The first passage in the structural member and a passage in the other structural member are held in communication with each other through a through hole that is defined in the passage communication member. Alternatively, a first engaging member is inserted in a recess defined in a structural member, and a second engaging member is retained in a slot in another structural member. When the first and second engaging members are coupled to each other by a fastening member, the structural members are firmly joined and fixed to each other.

Abstract: The invention of this patent is a furniture joint. The invention provides a single sided dovetail board that has a flat surface and an angled surface. The invention also includes a flat board, and a receiving furniture member having a slot therein. The slot in said receiving furniture member has a flat portion and angled portion. The flat board and single sided dovetail board are placed within said slot of the receiving furniture member creating a strong connection. The furniture joint can then be easily put together and taken apart. The invention can further include a dowel placed in a hole in the flat board and single sided dovetail board to create an even stronger connection.

Abstract: An apparatus for securing an object to a surface comprises a mounting cover having a first surface and a pair of sidewalls depending away from the first surface. The sidewalls are in a facing spaced relationship and secured to a second surface. At least two securement members are secured to the first surface between the pair of sidewalls. The securement members are configured to define a receiving area. Each securement member has a pair of engagement members secured within at least a pair of openings in the first surface. Each pair of engagement members include an upper surface. The upper surfaces of the pairs of engagement members are flush with respect to the first surface. An actuating member having a first portion, and a second portion depending away from said first portion, is configured to be slidably engaged in the receiving area. The second portion has a pair of engagement openings for slidably receiving a pair of guide members mounted to the object.

Abstract: A building panel, such as a flooring panel or wall panel and a method of assembling the same into a floor, wall cladding, etc. The panel is provided with a locking means in the form of groove (6) and tongue (7) forming a tongue/groove joint for assembling of the panels. In a preferred embodiment, the groove (6) and the tongue (7) are made of water resistant material and formed with a snap-together joint.

Abstract: An modular storage rack, display or cube system formed by snap together panels with alignment guides, which may also support wheels, shelves, drawers and doors. The system is assemble-in-place and may shipped and displayed for sale in a flat pack.

Abstract: A building panel, such as a flooring panel or wall panel and a method of assembling the same into a floor, wall cladding, etc. The panel is provided with a locking means in the form of groove (6) and tongue (7) forming a tongue/groove joint for assembling of the panels. In a preferred embodiment, the groove (6) and the tongue (7) are made of water resistant material and formed with a snap-together joint.

Abstract: A joint assembly for furniture members including a first member having a tongue including a first side extending outwardly from a first edge at a first predetermined angle with respect to the first edge and a second side extending outwardly from the first edge at a second predetermined angle with respect to the first edge. The tongue includes a projection positioned adjacent to the second side. The second member includes a groove having first and second walls and at least one cavity for receiving the tongue of the first member.

Abstract: A structural member, e.g. a truss for erection of temporary structures, comprises a number of elongate elements disposed in spaced generally parallel relationship to one another with transversely extending elements therebetween, and an element extending longitudinally of the structural member has a formation extending lengthwise of it for engagement by an attachment member which is to be retained to the longitudinally extending element at any of a range of positions therealong. The attachment member may provide for connection of a safety element to the structural member, and be freely movable therealong in use.

Abstract: The present invention is directed toward a connector for knockdown furniture. The connector includes a hollow connecting block having an aperture at both ends of the connecting block. The aperture at the front end is for riveting a rod. The connecting block further includes a hole on both lateral sides. A pressing bracket is inside the connecting block, and has a diminishing opening at its front end. The front edge is pivoted outward to form a suppressing surface having a plurality of serrations and having a hole at the rear end. A locking member has an eccentric axle that passes through the aperture on the connecting block and the hole on the pressing bracket and rivets the front end of the pressing bracket to the connecting block. A rod is pivoted in the front end of the connecting block and is deposed at the back end of the diminishing opening of the pressing bracket.

Abstract: A fixture which is formed through a bending work of a single metallic plate, is used as a fastening member for siding boards. The fixture comprises a vertical substrate; a horizontal portion extended from the substrate; and an engaging portion formed at the tip portion of the horizontal portion. The horizontal portion includes a first horizontal member and a second horizontal member put together. The engaging portion includes a vertical flat plate member which is formed contiguous to the first and second horizontal members.

Abstract: A design is disclosed for promoting the formation of weld between a first member and a second member whereby a fin is introduced at the outer corner portion of the first member to minimize the creation of defects such as runout or rollover. While such a design is applicable to any industrial welding operation, this design is of particular interest for welding bases or bit blocks holding cutting bits onto rotatable drums, wheels or chains used in construction or mining operations.

Abstract: A floor tile, in particular a laminate panel, parquet element or such like, with an edge profile on at least two opposite edges in the form of a modified groove and tongue joint, is designed in such a way that there is a tongue 20, 30 and a groove 22, 26 on each of the said two edges. The edge profiles are contrived so that the adjacent tiles can be locked in place in relation to each other in both the vertical and horizontal directions. Tongue 20 on the first tile 10 and groove 22 in the second tile 12 rise upwards from the bottom of the tiles at an angle. Accordingly, the bottom wall of groove 26 in the first tile and the bottom outer surface of tongue 30 on the second tile 12 are also inclined at an angle, while the top surfaces of the groove and tongue are oriented horizontally or parallel to the plane of the tile.

Abstract: A method of repairing a crack in a boiling water reactor shroud includes forming a pair of slots in the shroud on opposite sides of the crack in angled relation to one another so that the lateral spacing between the slots increases in a direction parallel to the crack, lowering a wedge clamp with laterally spaced slides into the annular space between the core shroud and the reactor vessel, positioning the slides in the slots, and moving the clamp in the direction of increasing lateral spacing between the slots to an operational position where the clamp prevents unacceptable opening of the crack during reactor operation by providing a structural load path which transmits structural loads across the crack. The slots are preferably configured to mate cooperatively in a manner which prevents the clamp from moving in a radially outward direction relative to the shroud once the clamp has been installed.

Abstract: A stand for supporting a computer comprises a first supporting member and a second supporting member coupled together. The first supporting member includes a first base and a first ledge extending from the first base. The first base forms a first coupling wall and a first protrusion extending from the first coupling wall. A first recess is defined in the first base and exposed to the first coupling wall. The second supporting member includes a second base and a second ledge extending from the second base. The second base forms a second coupling wall for coupling to the first coupling wall and a second protrusion extending from the second coupling wall to be engagingly received in the first recess of the first supporting member. A second recess is defined in the base and exposed to the second coupling wall for engagingly receiving the first protrusion of the first supporting member. The second ledge is spaced from the first ledge to cooperatingly receive a computer therebetween.

Abstract: The tapered dovetail joint is a method of joining two boards, or other rigid materials such as particleboard, wafer board, etc., by a unique type of modified dovetail joint. The modification to the classic dovetail joint includes tapering the dovetail pins as well as the dovetail tails with the same angle of taper in the same direction. The mating of this tapered dovetail joint will be greatly facilitated due to these corresponding tapers. The tapered nature of this joint minimizes difficulties in assembly due to the wedging action that takes place as the two boards are brought into union to create the joint. This wedging action allows the joint to be assembled even when there is moderate damage to the tails or pins including swelling—due to moisture, from the time of manufacture to time of assembly, impact damage, as well as minor manufacturing tolerance deficiencies in cutting of the pins and tails.

Abstract: A Non-Protrusive Expandable Clamping Device fastens together two bodies when conventional fastening devices cannot be used because of the unique space constraints and/or the shape of the joining surfaces of the bodies. The expandable clamping device, which has two tenons on opposite sides of its housing, can be slid into the bodies that have corresponding mortises on their joining surfaces to accommodate the tenons. The clamping device connects the bodies in one linear plane using motion in an orthogonal plane. When the clamping process is completed, facilitated by the rotational motion of a threaded bolt within the cavity inside the housing, what results is a joint that is strong in all directions as well as flush and airtight between the surfaces when an appropriate gasket or O-ring is utilized. Such a joint ensures proper alignment of the bodies while providing fixity in six degrees of freedom.

Abstract: A modular approach to the design of motion modules, e.g., positioning elements, is disclosed which allows a single positioning element to be integrated into a number of multi-axis configurations through combination with other basic positioning elements all of which share a modular interlocking feature. The motion module includes a base and a mobile stage. The base includes an exterior surface on which a first interconnector is located. The mobile stage includes an exterior surface and a second interconnector. The mobile stage is rotary or linearly positionable with respect to the base The second interconnector is located on the exterior surface of the mobile stage, The first and the second interconnector are mutually engagable With second and first interconnectors of other motion modules for stackable interconnection therebetween.

Abstract: A connector device 40 for use with a personnel barrier system includes a first connecting structure 50 suitable for engaging a T-shaped fixing point and a second connecting structure 52 suitable for engaging a V-shaped slot. The first connecting structure 50 includes a pair of opposed, inwardly-extending wall elements 54 defining between them a T-shaped slot 56. The second connecting structure 52 includes a pair of outwardly-extending wall elements 58 for engaging the V-shaped slot.

Abstract: In a method for mounting an inner cover section to a support structure of a motor vehicle, an engagement member is introduced onto the cover section or onto the support structure and engages into a receptacle formed in the corresponding other component. The engagement member thereby seats loosely with play in the receptacle to engage behind it and a resilient device is provided between the cover section and the support structure to tension these components. The resilient device can be formed by an elastic foam material which at least partially fills-up the intermediate space between the cover section and the support structure.

Abstract: A fastening member which comprises a substrate; a horizontal portion perpendicularly projected from the substrate; an upwardly inclined hook portion obliquely extended upward from a distal edge of the horizontal portion; a downwardly inclined hook portion obliquely extended downward from the distal edge of the horizontal portion; and a flat plate portion extended parallel with the substrate from a distal edge of the upwardly inclined hook portion and/or of the downwardly inclined hook portion. The substrate may be provided with an urging means for pressing the back surface of a siding board to prevent slipping.

Abstract: A method of joining, siding to studs, flooring to floor joists and, roof planking to rafters without the use of visible fasteners, such as nails and screws. The framing members, studs, etc., have rounded corners at their joining edge and rounded grooves close to this edge forming a rounded oval shaped knob for the length of the framing member. The cladding members (siding, etc), have oval shaped cross grooves, being the same shape and size of the knobs of the framing members, cut across them at the same spacing as the framing members. These grooves are undercut on each side so that when they are attached to the framing the undercut parts of the cross groove fit into the grooves along each edge of the framing member. Attachment is made by bending back the cladding at the cross grooves to open up the opening of the cross groove enough that it can be snapped over the knob of the framing member or the cladding can be forced over the knob edges by tapping it with a hard rubber mallet.

Abstract: Structural members 1, 21 are connected by way of a connecting rod 3 which is attached to one structural member 1 and projects outward from connecting surface 2 of structural member 1 in the direction of other structural member 21, and a connector 23 which is attached to other structural member 21 and has a plurality of wedges 25 which engage with connecting rod 3 stopping it so that it cannot slip out. Connecting rod 3 is attached so as to be moveable in a direction parallel to connecting surface 2.

Abstract: A positioning device is adapted to position a rear frame of a foldable bicycle relative to a front frame when the foldable bicycle is folded, and includes a rear anchoring member and a front anchored member adapted to be secured to rear and front wheel axles of the foldable bicycle and outboard to rear and front wheels, respectively. The rear anchoring member includes an outer lateral wall with upper and lower guiding surfaces, and a circumferential wall which extends from the outer lateral wall and which defines an insert slot extending rearwardly to form a first abutment wall. The front anchored member includes an inserted outer annular portion insertable into the insert slot, and a guided annular portion extending from an inner periphery of the inserted outer annular portion and having upper and lower contact parts so as to slidably engage the upper and lower guiding surfaces when the inserted outer annular portion is inserted into the insert slot.

Abstract: Connecting element (1) for connecting two components of a partition wall, comprising two clamping flanges (2, 3) interconnected by a connecting rod (4). Said element has an asymmetric configuration due to the fact that the clamping flanges (2, 3) have different cross sections. At least parts of the contour of the first clamping flange (2) are unrounded while at least certain parts of the contour of the second clamping flange (3) are rounded.

Abstract: A mounting fixture for a reconfigurable assembly machine having a plurality of modules with slots formed in their upper surfaces includes a hollow brick or cube having a plurality of intersecting keyways on the faces or surfaces of the cube. One of the keyways receives a first, locating key which is also received in the throat of the slots formed in the upper surface of the assembly machine module. The locating key includes a through opening which receives a threaded fastener having a head held captive in the T-slot. The key accurately positions the cube relative to the slot on the assembly machine module and the threaded fastener secures the cube thereto. The parallelism and perpendicularity of the various faces of the cube are highly accurate. Various assembly and testing components of the assembly machine are attached to the various remaining perpendicular and parallel (vertical and horizontal) faces or surfaces of the cube.

Abstract: A mechanical locking connector having a wedge, a wedge receiver, and an actuator. A wedge aligns closely to the interior of a wedge receiver and is forced by an actuator to expand opposing sides of the wedge receiver outwardly to frictionally engage any suitably shaped receptor having two corresponding opposing engageable sides.

Abstract: A trim assembly for use with at least one flanged support post including a first trim member engagable with the flanged support post, and a second trim member engagable with the first trim member.

Abstract: There is disclosed a flooring panel which comprises a supporting plate made of wood material and provided on at least one face with a covering. The supporting plate is provided at its edges with tongues and grooves which fit into and onto corresponding grooves and tongues on further similar panels. Each edge of the supporting plate has both a groove and a tongue to provide a firm connection.

Abstract: Arrangements of modular furniture may be set in place and computer equipment may then be cabled together without moving any module of the arrangement. Modules include a base having file storage, a base having computer power controls, and a base supporting a desk. Each module may provide a wiring access opening on each side to define an aligned wiring passage through as many base modules as needed for a particular arrangement. Exposed wiring access openings may be disguised by a sliding plate that completes the trim of the base, covers the opening, and conceals the fact that an opening exists.

Abstract: A high temperature repairable airfoil having a plurality of flow path cover tiles coupled to a single crystal spar member. In one embodiment, the plurality of flow path cover tiles include an attachment portion that is received within a groove formed in the outer surface of the spar. The attachment portion slides into a retaining feature within the groove so as to limit movement of the plurality of flow path cover tiles. Upon rotation of the airfoil, the plurality of flow path cover tiles become centrifugally loaded with a portion of the spar member. In one embodiment, the plurality of flow path cover tiles are formed of a material selected from the group consisting of ceramics, intermetallic, and thermal barrier coated single crystal alloy material.

Abstract: A joint is disclosed for connecting extruded segments to form a container, such as a pressure vessel for storing liquid propane. In cross section, joint includes a pair of symmetrical tabs, each tab configured at the end of adjacent arcuate outer wall segments. Tabs are configured for contiguous engagement to form a boss having a proximate neck portion and a distal body portion. Joint also includes a retaining member configured at the end of an internal web segment. Retaining member is configured to capture boss. A sealing weld is utilized to seal the adjacent tabs at exposed seam.

Abstract: A universal joint such as a constant velocity (CV) joint in a drive assembly of a front wheel drive vehicle can require a boot to seal the joint from environmental contaminants found on a highway or other vehicle driving surface. Typically, such boots are attached using a clamp, however it has been found that the crimps extending from the clamp can interfere with a vehicle's ABS sensor. The present invention provides a clampless means of attaching the boot to the CV joint, by providing a continuous rib projecting from inner surface of an end of the boot, and a coincident groove on the end of the universal joint, wherein the rib has a means for cooperating with the groove to retain said rib within the groove. It is contemplated that the present invention can be used on other types of universal joint and boot assemblies.

Abstract: A wall member with a first side having a tongue extending therefrom, a second side having a headed tongue extending therefrom, a third side having a groove defined therein for receiving a tongue of an adjacent panel, and a fourth side having a groove and cavity defined therein for slide-lock receiving of a headed tongue of an adjacent panel. The wall member may have a surface with a recess defined therein, and ribs extending from the recess. Also, the wall member may have a generally square, trapezoidal, hexagonal, or octagonal planar shape. Apertures may be defined in the tongue and grooves for aligning and receiving a dowel to lock panels together. A first corner section is defined by longitudinally extending the profile of the tongue through the profile of the headed tongue. A second corner section is defined by longitudinally extending the profile of the third side groove through the profile of the headed tongue.

Abstract: A furniture combination with connector device is provided with a connector installed at the connection of the furniture combination by the elements of binding and wedge, such as to install on the chair, table, and the cupboard. The binding and the wedge can be installed separately at the opposite location of the furniture. The binding is formed of concave shape providing with the wedge trough, and the wedge is formed convex shape providing with the wedge convex body that is complementary engaged with the wedge trough. The wedge trough has provided with an obliquity, so as to let the furniture elements can be fixed very steady in combination.

Abstract: A linear joining and locking device comprises a first receiver member providing a first closure surface thereon and a first linear cavity therein, the first closure surface communicating with the first linear cavity along a first linear aperture defined in the first receiver member; a second receiver member providing a linear sealing mounting device; the first closure surface being positionable for aligning the first linear aperture in mutual linearly corresponding adjacency with the linear sealing device mounting device; an elongate linear elastomeric sealing device engaged within the first linear cavity and the linear sealing device, and extensive therebetween; the sealing device providing a first linear channel therein, the linear channel responsive to fluid pressure for expanding the sealing device within the linear cavity so as to enable the first and second receiver members to be mechanically joined when desired.

Abstract: A tool mount for mounting tool assemblies on a transfer press, or other type of automated assembly line, includes a bayonet which can be selectively inserted into a receiver mounted on the transfer press rail. The receiver includes a generally tapered channel which receives a tapered portion of the bayonet. The receiver and the bayonet thereby form a dove tail type of junction. The direction of taper is oriented such that the bayonet must be inserted from the back end of the receiver and pushed forwardly to secure it therein. A lock selectively secures the bayonet within the receiver. The lock includes a latch that engages a first cam surface to push the bayonet inwardly into the receiver and thereby prevent it from being removed, while simultaneously insuring a tight fit between the receiver and the bayonet. The lock latch further engages a second cam surface of the bayonet when the bayonet is to be removed from the receiver.

Abstract: Tables and other mobile furniture used in seminars and training classes are joined by ring connector elements mounted for rotation on each item of furniture. Male and female dovetail connection points on the periphery of each ring are engaged to connect items of furniture.

Abstract: A bracket assembly for maintaining a miter joint between a first member and a second member including a bracket having a first surface and a second surface positioned at a predetermined angle with respect to the first surface. Attachment devices are positioned on the bracket for attaching the bracket to the first and second members to maintain the miter joint.

Abstract: An attachment element for mounting or otherwise securing an ancillary device to the vicinity of a machine tool or the like provides quick locking/release on a dovetail element. The attachment member has a base member and a pair of spaced arms forming an open-mouthed way that slides over such a dovetail member. At a locking angle relative to the dovetail, the edges of the arms bear against the dovetail sides, and the edges of the distal ends of the arms bear against the surface from which the dovetail extends. That locking angle is less than 90° angle between the plane of the attachment element and the surface from which the dovetail extends. The attachment element is translatable from its locked orientation to a release orientation by a brief application of manual pressure on it.

Abstract: A modular approach to the design of motion modules, e.g., positioning elements, is provided. Thus, a single positioning element can be integrated into a number of multi-axis configurations through combination with other basic positioning elements all of which share a modular interlocking feature. In an embodiment of the invention a motion module is disclosed which includes a base and a mobile stage. The base includes an exterior surface and a first interconnector located on the exterior surface. The mobile stage includes an exterior surface and a second interconnector. The mobile stage is positionable with respect to the base. The second interconnector is located on the exterior surface of the mobile stage. The first and the second interconnector are mutually engagable in releasable frictional engagement with second and first interconnectors of other motion modules for stackable interconnection therebetween.

Abstract: A lock is provided to releasably secure a first member to a second member. The lock has two brackets, one attached to the first member and the other attached to the second member. The first is a locking slotted bracket and the second is a locking pin bracket. The locking pin bracket has pins with heads that extend outwardly from the locking pin bracket. The locking slotted bracket has a T-shape to receive the pins, and a lock lever that snaps into a locking position between the pin heads in the slot to hold the pins in the slot. The heads can be removed by deflecting the lock lever and sliding the heads of the pins out of the T-shaped slot. The lock lever is biased and flexible so that it rests in a locked condition. For longer or heavier structures or where position is important, a slotted bracket with a keyhole-shaped slot may be provided. The keyhole-shaped slot receives a head of a pin which will slide into a wider slot and into an undercut where it is retained.

Abstract: A collar of a ceiling fan is composed of a plurality of sectors and each sector has a protrusion extending from a top thereof and a recess defined in an outside thereof. A resilient member is connected to each sector and includes a first portion having an aperture for receiving the protrusion, and a second portion which is a triangular member including two inclined sides. The resilient member is engaged with the recess of the sector corresponding thereto. The blade bracket has an end block which is engaged with the recess corresponding thereto and compressed by one of the inclined sides of the resilient member.

Abstract: A slitter-and-hole-punch and quick change adapter combination fits a bag machine or the like for punching holes and slits in a web of film material. A hole punch and a slitter blade are unitarily formed on a base member. Left and right resilient arms extend from distal to proximal, and have free ends that project proximally of the base member. The quick adapter can be an extruded block with a T-channel formed on a lower side with a passage or gap to accommodate the hole punch and the slitter blade. The T-channel has inwardly directed flanges that create side recesses to accommodate the resilient arms of the slitter-and-hole-punch. The side recesses have cooperating hollows to receive detents of the associated resilient arm. The slitter-and-hole-punch can be slid in and out of the T-slot, and when slid in, the detents on the resilient arms keep it in position. The slitter-and-hole-punch can be changed out in a few seconds by hand. The slitter-and-hole-punch units can be color coded, e.g., for gap size.