Abstract: A specimen slicing guide for use in slicing a biopsy specimen taken from a human patient or an animal patient includes a base extending in a longitudinal direction. A plurality of needles extends substantially perpendicularly to the base and the needles are spaced along the longitudinal direction of the base. Two specimen slicing guides are coupled via at least one link, which is adapted to allow an adjustable spacing of the two specimen slicing guides in a parallel relationship. A method of cutting a biopsy specimen includes fixing the biopsy specimen relative to a support surface using the needles of two, parallel-arranged specimen slicing guides, inserting a cutting tool between corresponding needle gap pairs and then downwardly moving the cutting tool under guidance of adjacent needles.

Abstract: A circular saw machine having a saw blade (1) that is movably held for back and forth motion during the sawing process. A forward and a rearward saw blade guide (4, 5) ensure the stability of the saw blade (1) while sawing. The saw blade guides (4, 5) respectively have contact surfaces (6), which abut on the respective side surfaces of the saw blade (1). In order to operate the circular saw machine with different saw blade diameters, the forward saw blade guide (5) is removable from, or pivotable away from, the saw blade (1), and the saw blade itself is interchangeable. The radial positioning of the contact surfaces (6) of the saw blade guides (4, 5) is variable. This can be accomplished by interchanging the whole saw blade guide (5), but also in particular by a mounting (12), pivotable with respect to the saw blade guide (4, 5) and to which the contact surface (6) is fixed.

Abstract: A guard assembly for a saw or other cutting device includes fixed and movable guards relatively pivotal by way of a linkage assembly having two links pivotally interconnected coaxially with a cam roller engageable with a cam surface for controlling relative guard movement. Other preferred features include a torsional coil guard return spring and spring enclosure that minimizes interference with workpiece cutting depth, an arbor shaft cover retention fastener that doubles, along with another caliper member, as a blade caliper set that prevents guard damage in the event of a bent or deflected blade or cutter, a drive assembly hold-down assembly for storage, and a horizontally-extending handle centered horizontally relative to the blade or cutter.

Abstract: An apparatus for slitting a running paperboard web includes a thin high speed rotary slitting blade that is plunged through the moving web and into a slot between a pair of anvil rollers supporting the web on the opposite side. Because the slitting blade and the anvil rollers are vertically separated and pre-positioned before order change, an adjustment apparatus is provided to spread the anvil rollers axially apart to provide an open gap with a large target for blade edge when it is plunged through the web and into the slot. The anvil rollers are then closed against the opposite faces of the blade for running operation. Preferably, the anvil rollers are mounted on brackets hinged together below the rollers to move the opposite upper edges of the rollers between the opened and closed position in the manner of a clam shell. The anvil roller assembly is also adjustable in the machine direction to compensate for reduction in rotary slitting blade diameter with blade wear.

Abstract: An apparatus for slitting a running paperboard web includes a thin high speed rotary slitting blade that is plunged through the moving web and into a slot between a pair of anvil surfaces supporting the web on the opposite side. Because the slitting blade and the anvil surfaces are vertically separated and pre-positioned before order change, an adjustment apparatus is provided to spread the anvil surfaces apart to provide an open gap with a large target for blade edge when it is plunged through the web and into the slot. The anvil surfaces are then closed to bring the edges of the surfaces against the opposite faces of the blade for running operation. Preferably, the anvil surfaces are mounted on brackets hinged together below the surfaces to move the edges of the surfaces defining the slot between the opened and closed positions in the manner of a clam shell.

Abstract: A mitre box having a base and a saw holder assembly pivotally mounted for angular movement over the base. The saw holder assembly is adapted to hold a saw and is capable of being locked at a predetermined angular position over the base.

Abstract: A device (1) is provided for slicing loaves and similar bakery products. The device includes a stationary frame (2) including a support (4, 5) for supporting the loaves or bakery products. A blade carrier (10) holds a plurality of thin elongate cutting blades (11) at spaced locations with respect to one another. Each blade includes a cutting edge (13) for cutting the loaves or bakery products. The device includes a blade carrier drive (51-56, 65-68) which provides for first and second movement of the blade carrier. A cleaning mechanism (70, 71) is provided for cleaning the cutting blades.

Abstract: A throat plate blade guide for insertion into the work table of a band saw. The blade guide first includes a plate having a blade slot to permit a band saw blade to travel therethrough. The plate additionally has opposed blade guide structures juxtaposed with the blade slot on opposite sides of the band saw blade to limit lateral motion of the band saw blade. In the preferred embodiment, the blade guide also includes blade guide adjustors for adjusting the distance between the respective blade guide structures and the band saw blade.

Abstract: A sawguide positioning method for circular gang saws mounted on a single saw arbor shaft. A guide bar is positioned generally parallel to the saw arbor shaft. A plurality of sawguide pairs are slidably mounted on the guide bar for longitudinal axial travel thereon. The guides extend on either side of each of the circular saws. A pair of opposed sawguide positioning wedges are threadably mounted on a selectively rotatable shaft having a right hand threaded end and a left hand threaded end, the axis of the shaft being generally at right angles to both the saw arbor shaft and the guide bar. The wedges are threaded on to the selectively rotatable shaft with their vertices innermost. The threaded shaft has an enlarged diameter portion or disk intermediate the threaded ends which is rotatably positioned within matching recesses in the opposed faces of the sawguides.

Abstract: A guiding system for large circular saws wherein the guiding pads are positioned according to a typical angular wavelength of a circumferential vibration wave of the saw blade when rotating at an operating speed. In one embodiment, the frequency of a natural circumferential vibration wave is measured before positioning the guiding pads. Two sets of guiding pads are spaced apart a distance equal to about half the angular wavelength of such natural vibration wave. This distance corresponds to an angular distance between two successive opposite peaks or crests of a sinusoidal wave in the saw blade. The consequence of two successive opposite peaks entering the guiding pads at the same time has the effect of dampening the vibration very quickly, by acting upon both sides of the blade simultaneously to reduce the amp amplitude of the wave, while maintaining balanced axial impact on the saw.

Abstract: To cut a workpiece along two different cutting directions, the band saw teeth are set in a first vertical cutting direction by a band saw guide device and then the cutting head (CH) is moved frontward, for instance; thereafter, the band saw teeth are twisted toward a second vertical cutting direction by the same guide device and then the cutting head is moved to-and-fro, for instance. The machine is effectively usable in cutting off a test piece from a large workpiece. To improve the cutting precision, various novel devices are incorporated, such as a balance cylinder (B-CYL) for allowing the cutting head to move up and down smoothly; two back-and-forth cylinders (BF-CYL) for moving the cutting head back and forth in symmetrical pressure application; cutting head fix device (FD); a rigid guide column; band saw holding device (BSH); a slidable small-diameter driven wheel arranged within the cutting head (CH), etc.

Abstract: A bandsaw machine which has a sawhead assembly in which a flexible endless bandsaw blade is trained around a pair of bandsaw blade wheels to cut a workpiece, with the blade being guided by a guide arm, includes a guide member on the guide arm, for holding the bandsaw blade in a vertical orientation by pushing the bandsaw blade from both sides. A rolling member is mounted on the sawhead assembly and is free to push a side surface of the bandsaw blade with a predetermined force so as to prevent vibration of the blade.

Abstract: To cut a workpiece along two different cutting directions, the band saw teeth are set horizontally by a band saw guide device and then the cutting head (CH) is moved frontward, for instance; thereafter, the band saw teeth are twisted downward by the same guide device and then the cutting head is moved downward. The machine is effectively usable in cutting off a test piece from a large workpiece. To improve the cutting precession, various novel devices are incorporated, such as a balance cylinder (B-CYL) for allowing the cutting head to move up and down smoothly; two back-and-forth cylinders (BF-CYL) for moving the cutting head back and forth in symmetrical pressure application; cutting head fix device (FD); a rigid guide column; band saw holding device (BSH); a slidable small-diameter driven wheel arranged within the cutting head (CH), etc.

Abstract: A portable, frameless, self-supporting guide for circular power saws comprises an elongated base plate affixed to a single L-shaped bar on one side and to a strip on the other side thereof. A pair of parallel cross rails is fixedly disposed above the base plate for slidable movement of a power saw thereby producing true right angle cuts or mited cuts in a workpiece in a safe and efficient manner.

Abstract: A mitre box has a saw guide subassembly rotatably supported on a vertical post and a multiplicity of indents spaced about a portion of its periphery. A wedge member is pivoted on the base member below the saw guide subassembly and is biased to engage an edge portion in one of the indents thereof to prevent its rotation. Positioning means is provided to orient the engagement edge portion of the wedge member in axial alignment with the post to ensure accurate and stable positioning of the subassembly in a predetermined rotated position about the post. The saw guide subassembly may include a fixedly supported saw guide element and a second saw guide element which is carried on the fixed guide element and pivotable relative thereto about a pivot point adjacent the upper edge of the guide elements to equalize the pressure exerted by the ends of the saw guide subassembly on the saw received therebetween.

Abstract: A bandsaw machine has a bandsaw blade frictionally held between opposed first and second guide members. A removably adjustable pressing plate member is connected to the second guide member. The second guide member is movable towards and away from the first guide member in response to adjustable movement of the pressing plate member. A lever-actuated cam acts on the pressing plate member to movably adjust the same.

Abstract: A mitre box has a saw guide subassembly rotatably supported on a vertical post and a multiplicity of indents spaced about a portion of its periphery. A wedge member is pivoted on the base member below the saw guide subassembly and is biased to engage an edge portion in one of the indents thereof to prevent its rotation. Positioning means is provided to orient the engagement edge portion of the wedge member in axial alignment with the post to ensure accurate and stable positioning of the subassembly in a predetermined rotated position about the post. The saw guide subassembly may include a fixedly supported saw guide element and a second saw guide element which is carried on the fixed guide element and pivotable relative thereto about a pivot point adjacent the upper edge of the guide elements to equalize the pressure exerted by the ends of the saw guide subassembly on the saw received therebetween.