Abstract: A trimming apparatus trims by cutter blades running from one end of a sheet bundle to the other end thereof, includes a bed surface for the sheet bundle, cutter blades for cutting the sheet bundle supported on the bed surface, a drive device for running the cutting blades from one end of the sheet bundle to the other end thereof, a support member having a support face, and a shift device for moving the support member between a working position for the support member supporting cut sheet dust pieces and a retreating position not to hinder the cut sheet dust pieces from dropping. The shift device displaces the support face from the working position to a retreating position after the cutter blades move at a predetermined distance toward the other end of the sheet bundle from one end thereof.

Abstract: A table saw guard assembly for guarding a blade on a table saw is provided. The table saw guard assembly includes a support structure and a hood assembly including at least one of a front curtain, first side curtain, second side curtain and top curtain, wherein each of said curtains are independently moveable and/or removable from the hood assembly. Furthermore, a table saw guard assembly is provided including a quick release mechanism for connecting the hood assembly to the support structure.

Abstract: A knife holder device for a microtome having a blade guard constituted as a pivotable bow, wherein, in a protective position, the blade guard is disposed on the side of the knife facing away from the sample at a distance such that access to the cutting edge is not possible. The blade guard can be positioned in three different defined positions and is provided with elements that have the following effects depending on the position: in the upper, protective position, simultaneous fixing of the position of the knife holder in the guideway; in the central, knife-holder-sliding position, accessibility to the knife holder with simultaneous release of the position fixture of the knife holder in the guideway; and in the lower, knife-changing position, free accessibility to the knife holder with simultaneous fixture of the position of the knife holder in the guideway.

Abstract: A device for trimming at least one side edge of a bound printed product including a trimming table to receive the printed product and a press die arranged to press the printed product against the trimming table. The press die is operative to rise and fall with respect to the trimming table and the press die includes an elastic surface in a region approximately near the side edge of the print product. The elastic surface is operable to expand in a direction approximately transverse to the pressing direction. The device also includes a trimming knife positioned to trim the side edge. The trimming knife is operable to move between a starting position away from the trimming table and an ending position at the trimming table. The device also includes counter blade or a cutting bar mounted to limit a cutting stroke of the trimming knife.

Abstract: A cover device for a power tool with at least one disc-shaped working tool (6), includes first and second cover parts (12, 22) and a locking mechanism (41) for releasably pivotally positioning the second cover part (22) relative to the first cover part (12) and having a locking element (46) provided on one of the first and second cover parts (12, 22) and engageable with a counter-locking element (23) provided on another of the first and second cover parts (12, 22), and an actuation member (42) pivotally supported at a pivot point (45) on the one of the first and second cover parts (12, 22) and having an actuation section (43) and a locking section (44) extending at an angle from the actuation section (43), with the locking element (46) being provided at a free end of the locking section (44).

Abstract: A knife holder device for a microtome having a blade guard constituted as a pivotable bow, wherein, in a protective position, the blade guard is disposed on the side of the knife facing away from the sample at a distance such that access to the cutting edge is not possible. The operability is improved and simplified and therefore safe operation is adequately ensured. This is achieved by constituting the blade guard such that it can be positioned in three different defined positions and is provided with elements that have the following effects depending on the position: in the upper, protective position, simultaneous fixing of the position of the knife holder in the guideway; in the central, knife-holder-sliding position, accessibility to the knife holder with simultaneous release of the position fixture of the knife holder in the guideway; and in the lower, knife-changing position, free accessibility to the knife holder with simultaneous fixture of the position of the knife holder in the guideway.

Abstract: A knife holder for a microtome has a plate arranged pivotably on its base member, which, in its functional position, covers the cutting edge of the knife and is spaced apart from the cutting plane towards the side of the knife holder remote from the specimen. The plate is also spaced apart from the knife holder on the side of the cutting edge of the knife. The plate precludes gripping of the cutting edge of the knife and a pivoting mechanism for the plate is coupled to a switch. When the plate is pivoted out of the functional position, the motor drive of the cutting movement is locked, or a brake precludes any movement of the knife slide or specimen slide. The plate preferably consists of a transparent material to permit observation of section removal in the functional position.

Abstract: A table saw guard assembly for guarding a blade on a table saw is provided. The table saw guard assembly includes a support structure and a hood assembly including at least one of a front curtain, first side curtain, second side curtain and top curtain, wherein each of said curtains are independently moveable and/or removable from the hood assembly. Furthermore, a table saw guard assembly is provided including a quick release mechanism for connecting the hood assembly to the support structure.

Abstract: A table saw guard assembly for guarding a blade on a table saw is provided. The table saw guard assembly includes a support structure and a hood assembly including at least one of a front curtain, first side curtain, second side curtain and top curtain, wherein each of said curtains are independently moveable and/or removable from the hood assembly. Furthermore, a table saw guard assembly is provided including a quick release mechanism for connecting the hood assembly to the support structure.

Abstract: A food product slicer with a rotatable slicer knife includes a ring guard disposed about a portion of the peripheral cutting edge of the slicer knife. A removable ring guard cover includes a food catching wall positioned in the gap between the peripheral cutting edge of the knife and the ring guard.

Abstract: A quick release device for a saw blade guard assembly in a circular saw includes a mounting block having two spaced sidewalls, a mounting groove defined between the two sidewalls for receiving a spreader, and two through holes respectively defined through the sidewalls and in communication with the mounting groove and a locating hole. At least one movable engagement member is movably disposed in the through hole of the mounting block. A locking member having two spaced locking blocks mounts onto the mounting block. Each of the locking blocks has a retaining wall portion for engaging the at least one movable engagement member and forcing the at least one movable engagement member to be held in the locating hole of the spreader.

Abstract: A portable power grinder has a housing, a rotating output shaft with a grinding wheel mounting device, a grinding wheel safety guard adjustable between angular positions defined by apertures in the safety guard, and a manually operable safety guard arresting device engageable with an aperture. The arresting device has a lock slide movable on the housing and operable by an articulated lever connected at one end to the housing and at another end to the lock slide and being shifted by folding and unfolding, thereby moving the lock slide between a safety guard arresting position and a safety guard releasing position and locking the lock slide in the arresting position. The lock slide includes a spring exerting a force onto the safety guard in the arrested position. A lock spindle displaceably supported on the lock slide moves between a retracted safety guard locking position and an advanced position to lock the output shaft.

Abstract: The safety device for a band saw which includes a vertically displaceable guard which is slidably mounted to a housing of the saw and having a lower end adjacent the table of saw and wherein a pivotable shield is carried by the lower end of the guard. A locking mechanism normally secures the guard in a lowered covering relationship to a band saw blade and must be manually released to permit raising of the guard to allow a workpiece to be moved beneath the shield to be cut by the band saw blade.

Abstract: The invention is a new book trimming machine comprising trimming blades with combined movement, that is, with an arced movement and a non-circular rotation of the blade. The machine is provided with a central interchangeable pressing device to keep the sheets in horizontal position during trimming. The support table is constituted by two hinged parts with axis parallel to the advance direction of the book. Once the book has been trimmed, said two parts are rotated downwards in order to remove the trimmings. An overturning plane is positioned between the two side parts of the support table and is lifted and aligned with the two side parts of the support table when the blades trim the book. The front part of the conveyor belt that transports the book towards the support table slides around translating rollers, in such a way as to transfer the book onto the support table and then move away to let the trimmings of the book edge opposite the spine fall down.

Abstract: A cutter guard device is adapted for use in a belt saw machine, and includes a stationary hinge leaf formed with a first knuckle unit, a movable hinge leaf formed with a second knuckle unit, and a hinge pin extending through the first and second knuckle units, thereby permitting rotation of the movable hinge leaf between cutter concealing and cutter exposing positions. The movable hinge leaf is further slidable along the hinge pin between retaining and pivoting positions. The movable hinge leaf is movable between the cutter concealing and cutter exposing positions when disposed in the pivoting position on the hinge pin. A retention unit retains releasably the movable hinge leaf in the cutter concealing position when the latter is further disposed in the retaining position on the hinge pin.

Abstract: A blade guard and lifter therefor surround the saw blade, interlocking when raised by a workpiece as a result of relative movement caused by a secondary linkage. Two pair of primary linkages pivotally connect the blade guard to the splitter. The dual secondary linkage pivotally attaches the parallel plates of the lifter to one of the two pivot points of the primary linkages. Any lifting force is resisted by the rigidity of the primary link that does not share a pivot point with the secondary linkage. A dust collector can be provided to the table saw to minimize respiratory hazards.

Abstract: A guide assembly includes a sleeve-shaped member having first and second ends. At least one insert member is positioned within one of the ends of said sleeve-shaped member, the insert member including an end-to-end channel. A guide bar extends through the sleeve-shaped member and along the end-to-end channel of the insert member. A first end of the guide bar extends from the first end of the sleeve-shaped member and a second end of the guide bar extends from the second end of the sleeve-shaped member. A second insert member positioned in the other end of the sleeve-shaped member may also be provided.

Abstract: A printed circuit board drilling machine, with a well-designed outer shape, providing excellent operability and maintainability, which sequentially makes a number of holes in at least one printed circuit board, placed on a table 22 moved in an XY plane, by using a drill driven by a spindle motor 27. The machine has openable/closable doors 20 and 21 which is separated into an upper door and a lower door in a front portion. The upper door 20 opens upward, while the lower door 21 opens downward. The upper door 20 comprises transparent material. Upon maintenance, the doors 20 and 21 are opened, and the table 22 is moved inwardly. Thus, the distance from the outside of the machine to the spindle motor 27 and its peripheral parts can be reduced, and maintenance can be easily performed with respect to the spindle motor 27 and its peripheral parts.

Abstract: A guide assembly for receiving a guide bar of a band saw, includes a sleeve-shaped member having first and second ends. A first insert member is positioned within the sleeve-shaped member. An outer peripheral surface portion of the insert member forms a first guide bar receiving channel with an inner peripheral surface portion of the sleeve-shaped member. A second insert member may also be provided to form a second guide bar receiving channel which aligns with the first guide bar receiving channel. Said insert members may also include at least one exposed end having a peripheral lip which overlaps the respective end of the sleeve-shaped member.

Abstract: A power rotary hand saw (10) with a blade guard 36 mounted for powered movement between a guarding position (FIG. 1) and a nonguarding position (FIG. 2) is moved to the guarding position (FIG. 1) by a separate dedicated electrical motor (46) rotating a drive gear (42) linked with an elongate set of gear teeth (40) and returned when electrical power to the guard drive motor (46) is reversed by a guard control switch (49) separate and apart from a blade drive motor control trigger switch (34). Alternatively, power to the guard drive motor (46) is removed and a coil bias spring (52) return the guard (36) to the guarding position (FIG. 1). The guard driving mechanism (42, 44, 46) is mounted for movement between a drive position (FIG. 1) in which the drive mechanism is linked to the set of gear teeth (40) and a nondrive position in which the drive gear (42) is spaced from linkage with the set of gear teeth (40) and is disabled from responding to actuation of the guard drive power control switch (49).

Abstract: A new Automatic Guard Lifting System for automatically elevating a lower guard on a conventional circular saw thereby preventing the lower guard from interfering during cutting of an object.The inventive device includes a motor having a shaft secured to the circular saw, a sleeve having a slot secured within an upper guard, a cable connected to the shaft and the lower guard, and a limiting switch electrically connected to the motor.

Abstract: A portable power tool for operating a wheel type grinding or cutting working implement comprises a housing (10), a rotating output spindle (11) with a working implement supporting flange (14), a safety guard (16) adjustably supported on a guide flange (15) on the housing (10), and a selectively operable arresting device (18) for positively engaging lock openings (20) on the safety guard (16) for locking the latter in alternative positions relative to the housing (10), wherein the support flange (14) is provided with a number of peripheral indentations (21), and the arresting device (18) comprises a lock bolt (19) which is longitudinally shiftable between a first position in which it engages either one of the lock openings (20) on the safety guard (16), a second position in which it engages either one of the lock openings (20) on the safety guard (16) as well as either one of the support flange (14) indentations (21), and a third position in which it neither engages anyone of the safety guard (16) lock opening

Abstract: The invention relates to a guard which covers the periphery of the blade during use and is axially displaceable a limited distance to allow access to the rear of the blade to facilitate cleaning. The guard is mounted on the slicing machine in a fashion which prevents its removal except under condition in which the blade itself is first removed.

Abstract: A knife and knife holder assembly for use with a sheet material cutting machine includes a replaceable knife with a lower most tip point and a guard and clamp member having a shoe surface engagable with the material being cut to limit the knife's penetration. An adjustment means and a connecting means associated with the guard and clamp member and with the holder allow for quick and easy adjustment of the vertical position of the member on the holder to vary the amount by which the knife protrudes beyond the shoe surface, thereby adjusting its penetration, and also allows quick and easy movement of the member between tightened and loosened conditions relative to the holder, the knife being removable from and replacable in the holder and the member being vertically adjustable in its loosened condition, and the guard and clamp member in the tightened condition of the connecting means being itself fixed to the holder and also holding the knife clamped in a fixed position to the holder.

Abstract: A releasable latching device (32) for a portable circular power saw (10) includes a pivotable latch member (32) for releasably latching or locking a guard member (22) for a rotary saw blade (20) in a guarding position, to preclude serious injury to an operator during use of the saw. The latch member (34) includes a hook (44) engagable in a first retaining notch (46) or a second retaining notch (50) in a hub (48) of the guard member (22) for this purpose, depending upon whether the saw (10) is being used to make a straight cut or a 45.degree. cut. The latch member (34) is retained in a latching positon by a spring biased push rod (52) and is moved to an unlatching position by operation of the push rod.

Abstract: A scroll or jigsaw of the walking beam type is disclosed in which the upper and lower beams or arms are of hollow, tubular construction so as to have sufficient rigidity to resist up and down vibrational movement, and so as to permit lateral cutting. The beams are mounted in a pair of identical die cast frame members, and the drive motor is mounted directly to the rear of the frame members. The motor is connected to the rear ends of the beams for reciprocably driving them. The frame members, together with the motor, are pivotally mounted relative to a base or table frame thereby to permit angling of the saw blade (as opposed to tilting the table) for bevel cuts.

Abstract: A guarding system for the protection of workers at least at the workpiece discharge side of a truss lumber component cutting apparatus is disclosed. Guard sections are attached to and move with movable elements of the cutting apparatus in both horizontal and vertical directions of movement in relation to a lower stationary guard section. As a result, a restricted opening only is formed by the guarding system at the workpiece discharge side of the apparatus so that a worker can receive cut wooden components with comparative safety.

Abstract: The invention relates to a device for guarding the blade of an orientable circular saw or like tool, already provided with an upper guard constituted by a sheath element enveloping the upper part of the blade, said device further comprising a piece of rigid transparent material laterally and frontally enveloping, at least transversely with respect to the plane of the saw blade, that portion thereof directed towards the sawyer, and comprising side and front walls inclined from the outside towards said tool and from bottom to top, means being provided for fixing said piece of transparent material on said upper guard.

Abstract: An impact-type wire rope cutter is disclosed in which a slotted fragment guard is movably mounted to the body of the wire rope cutter. The slotted fragment guard slidably receives the cutting chisel therethrough, and it is formed so that it can be moved between an open position for receipt of a length of wire rope and a closed position immediately over the cutting area to prevent the direct expulsion or escape of fragments which can be produced by the cutting chisel during cutting. The fragment guard can be retrofit to existing cutters and easily replaced.

Abstract: An apparatus for longitudinally slitting moving webs of material. The apparatus provides for adjustment of cutting blade engagement with a moving web during slitting. The apparatus also provides for a consistent blade cutting angle as well as for increased use of a blade cutting edge. Further, the apparatus markedly reduces operator exposure to blade cutting edges.

Abstract: The combination in a food slicer of the type embodying a cutter unit, comprising a plurality of spaced cutter blades, and a pusher unit having a plurality of pusher blades that may be manually moved into and out of intermeshed relation to the cutter blades for pressing tomatoes, or the like, through the cutter unit, of a safety guard having a portion movable upwardly and downwardly between a position wherein it is disposed in overlying relation to the cutter blades, between the cutter unit and the pusher unit, and a position wherein it is disposed above the pusher unit, the safety guard having a projecting portion for preventing the pusher blades being damaged by engagement with the safety guard.

Abstract: A work table and hold-down assembly for adapting a power hand saw such as a saber saw or jig saw for bench use. The assembly includes a work table which is clamped to the base of the saw, the work table having an opening through which the saw blade passes. A work hold-down member is held in adjustably spaced relation to the work table by a clamping swivel stem rotatably mounted in the opening of the work table, thereby permitting the work-holding member to be moved laterally with respect to the work. A safety shield carried by the work-holding member is in spaced, surrounding relation to the saw blade.

Abstract: A transparent sleeve made of impact-resistant plastic is fitted removably around the angularly spaced stripper fingers of a punch press and encloses the spaces between the fingers to prevent parts of the punch from flying out through such spaces in the event the punch should break.

Abstract: A preferably transparent awareness guard of flat plate form is attached to the conventional upper saw guard of a radial arm saw or the like in such a manner that the awareness guard can be raised and lowered relative to the work and saw blade and can also be tilted through a rather wide angular range and securely locked in various adjusted positions. The guard extends forwardly of the saw blade and on opposite sides thereof so that, when the sawyer moves material in front of the saw blade to reposition his work, his arm will engage the awareness guard before contacting the saw blade.

Abstract: A two section guard for enclosing the upper and lower parts of a slitting wheel designed to slit continuously moving tapes of material such as paper, cloth, and plastic film. The slitting wheel extends through the bottom portion of the lower guard only far enough to engage the tape and a backup shear wheel. The lower portion of the guard is slotted for adjustment to accommodate slitting wheels of varying diameters.