Abstract: The invention relates to a novel open retinoscope comprising: a body (3) comprising a light source (31) oriented in the longitudinal direction and a first coupling means (32) for coupling to a Volk lens (51) holder in a longitudinally sliding manner; a Volk lens (51) holder (5), coupled in a longitudinally sliding manner to the body (3), where the holder (5) comprises a second longitudinal sliding coupling means (52) which is complementary to the first longitudinal sliding coupling means (32) of the body (3); and a smartphone adaptor (2) which can be connected to the body (3) in a transversely sliding manner.

Abstract: An end clamp for fastening a framed PV module on a carrier profile includes a first and second part with respective tooth systems corresponding to each other. The first and second parts together comprise a first section which holds down a frame of the framed PV module onto a surface of the carrier profile, a second section which laterally fixes the frame, a third section with an opening to have a screw pass therethrough, and a fourth section which supports the end clamp on the surface of the carrier profile. The first and second parts slide one inside the other parallel to the first and second sections in at least one discrete position corresponding to a specific frame height provided between the surface and the first section. The first and second parts thereby have one respective remaining degree of freedom and a clearance fit in two other degrees of freedom.

Abstract: A portable holder for supporting a ski, snowboard, bicycle and firearm during cleaning, maintenance, adjustment, sighting and repair operations at a work station, the holder being adapted to support a portion of the ski, snowboard, bicycle and firearm, the portable holder comprising: a base section adapted to be fixed to the work station in a substantially upright position; a threaded rod mounted to the base section in a substantially vertical orientation; and, one of a support bead and a vise assembly affixed to the upper portion of the threaded rod; wherein the base section contains a substantially vertically orientated threaded aperture allowing the threaded rod to be rotated about its longitudinal axis into the threaded aperture of the base section to permit both mounting of the threaded rod to the base section and height adjustment of the threaded rod relative to the base section; the support head having a base and at least one flange extending upwardly from the base to receive a support tongue of one of

Abstract: The present invention relates to a cutting platform for cutting and shaping a clay slab. The platform has a water-absorbing cutting mat with a top surface for receiving the clay slab. The platform has a bottom surface opposite the top surface. The bottom surface is adapted to overlay a board. The platform includes grid-pattern indicia extending across the top surface of the mat. The grid-pattern indicia includes a first set of spaced-apart lines in parallel with each other and a second set of spaced-apart lines in parallel with each other. The first set of lines intersect with and are perpendicular to the second set of apart lines. The grid-pattern indicia includes unit measurement indicia. Cutting of the clay slab to a desired shape is facilitated by the cutting platform thereby.

Abstract: The present invention provides a fixture and method for mounting a head window to a frame for use in a submarine periscope system. The fixture supports the head window during the potting of the head window to the frame. A spring-loaded clamping plate is mountable to a baseplate for relative movement therebetween. The clamping assembly has an oval recessed portion. A plurality of spaced apart feet are formed within the oval. The feet support and are bonded to the head window. Shim stock are placed between the feet to define a critical gap.

Abstract: A tool for correcting the twist angle of a turbine blade includes an adaptor configured to engage a tip of the blade, a socket drive configured to engage the adaptor, a first handle connected to a first side of the socket drive, a second handle connected to a second side of the socket drive, and a torque gauge configured to measure a load applied to the blade.

Abstract: A method for fabricating a plurality of turbine components is provided. The method includes removably coupling at least one tab to a plate, wherein the at least one tab and the plate each include a plurality of apertures extending therein. The at least one tab is removably coupled to a first turbine component, and a tool is removably coupled to the plate such that the plate and the at least one tab substantially align the tool with respect to the first turbine component. The method further includes performing a fabrication operation on the first turbine component. The at least one tab is re-oriented with respect to the plate, and the at least one tab is removably coupled to a second turbine component. The tool is removably coupled to the plate such that the plate and the at least one tab substantially align the tool with respect to the second turbine component, and a fabrication operation is performed on the second turbine component.

Abstract: A ski holder for tuning skis is disclosed. The device allows a ski to be held in a variety of orientations so that adjustments and maintenance work can be performed thereon. The device includes a track assembly, a plurality of ski support assemblies slidably engageable with the track assembly, and a plurality of binding support assemblies slidably engageable with the track assembly. The ski support assemblies allow a ski to be held in vertical, horizontal, and angled positions, and can be locked in desired positions along the track assembly. The binding support assemblies contact bindings of a ski to assist with retaining a ski on the holder, and can also be locked in desired positions along the track assembly.

Abstract: A temporary gutter retainer includes an attachment member, support member, and lateral containment member. A bottom gusset is preferably formed behind the attachment member, support member, and lateral containment member. A top gusset is preferably formed above the junction between the attachment member and support member. At least two holes are formed through the attachment member. Each of the holes are sized to provide clearance for a suitable screw. The temporary gutter retainer is preferably used in the following manner. A first temporary gutter retainer is attached near one end of a facia board and a second temporary gutter retainer is attached near the other end of the facia board with screws and a portable power tool. The installer places the gutter segment into the first and second temporary gutter retainers. A level is placed inside the gutter segment at one of the ends thereof; the gutter segment is raised or lowered to the correct height; and the gutter segment is then attached to the facia board.

Abstract: The sheet material cutting system includes a cutting board having a reference corner with its two edges at a right angle with respect to each other. Cutting grooves are formed in the cutting board through the top layer thereof to expose a different colored layer for groove visibility. The grooves are positioned at known distances from the reference corner. The reference corner carries stops so that, when a sheet of colored transparent material is placed against the stops, the grooves can be used to guide a knife for cutting a square piece of colored transparent material for use in color frames in stage and similar lighting systems.

Abstract: The bench for machining elongate objects such as strips of marble and the like comprises a generally boxlike body having a surface over which a portable profiling machine can be moved and a side comprising means for holding elongate objects or strips or the like in position by means of a plurality of pneumatic suction inlets which, by the action of low pressure, hold the elongate object stably during its machining.

Abstract: A cutting board assembly comprises a rigid base member and a selectively removable surface layer. Both the base member and the surface layer are composed of a material suited for food service. The base has a flat level upper surface. The selectively removable skin layer is received over the base to provide a replaceable cutting surface thereto. The surface includes a downwardly extending skirt to provide a snug fit about the perimeter of the base. A curb extends upwardly from the cutting surface adjacent an outer edge thereof to provide a trap for inhibiting food or juices from sliding off the cutting surface. At least a portion of the cutting surface outer edge is free of the curb to enable the sliding transfer of food to and from the surface.

Abstract: A vacuum fixture table is set up to establish a vacuum with the surface of the table so one side of a workpiece can be subject to a cutting operation. It also holds wooden panels in conjunction with a template holding frame without nailing or clamping, thus preventing damage to template and speeding up the cutting operation.

Abstract: A support for flat workpieces for program-controlled machines includes a plurality of workrest rails which are movable along a first machining axis. Each workrest rail supports a plurality of vacuum chucks which are movable along the workrest rails and thereby movable along a second machining axis. Light bands which include a row of point sources of light are provided to indicate the selected positions of the workrest rails and the selected positions of the vacuum chucks on the workrest rails, thereby ensuring that the machining process does not interfere with or damage the vacuum chucks.

Abstract: A modular model verification mounting system and method for building and verifying a production tooling verification model with a surface contour made of a workable material is disclosed. The mounting system can include at least one base member for supporting the production tooling verification model. The base member has a first uniform grid of apertures disposed in a first surface at a first predetermined distance from one another. At least one component member is provided for attaching to the base member in cooperation with the first grid of apertures. The component member has a second uniform grid of apertures formed in at least one second surface and disposed at a second predetermined distance from one another. At least one armature is connected to the component member in cooperation with the second grid of apertures. The armature member has at least one custom surface adapted to support the workable material.

Abstract: A wall panel jig apparatus (10) for fabricating a variety of conventional and/or extended wall panel segments including corner panel segments (110) window panel segments (120) standard panel segments (130) entry door panel segments (140) and end panel segments (150) wherein the jig apparatus (10) comprises a rectangular framework including top (20) bottom (30) right side (40) and left side (50) frame members for joining conventional top plates, shoe plates and studs into conventional wall panel segments by nailing.

Abstract: An apparatus and method for aligning flexible printing plates and for accurately drilling pin register holes therein includes a three-way adjustable table top assembly which can be selectively adjusted in X and Y directions and rotated about an axis. A pneumatic clamp is positioned on the table top assembly for clamping a pre-marked flexible printing plate to be drilled in place thereon. A movable stereomicroscope viewer is slidable above the table top assembly to view the flexible plate for position adjustment via the adjustable table top assembly. A drill assembly is also positionable over each location at which a pin register hole is to be drilled. The drill assembly includes a movable hollow core drill bit surrounding a stationary rod. Once the flexible plate is aligned via the viewer, the drill assembly is sequentially positioned above the flexible plate at each point to be drilled with a pin register hole and operated to drill each hole therein.

Abstract: A table saw includes a table, a saw mounted on the table, a carriage mounted on the table, a fence attached to the carriage and extending over the table, and a motor for moving the carriage and fence between at least two operative positions. The motor is actuated by a computer. A keypad mounted on the fence is used to input data to the computer to actuate the motor.

Abstract: A pivotable stop for machine tools, in particular panel saws, having a striker bar, on which a first stop flap is mounted in a longitudinally displaceable but fixed manner, and is connected to a measurement and display unit which determines and displays the relative position of the stop flap to the striker bar, and in which a rod can telescopically be extended and retracted, which bears a second stop flap at its free end, characterized in that a coupling placed at the measurement and display unit detachably connects the rod to the measurement and display unit.

Abstract: A cutting table is disclosed which can be used to cut workpieces such as banners. The device comprises a hard-surfaced vacuum table, with a rectangular grid pattern of cutting grooves. One or more raised measuring guides allow quick and accurate alignment and measurement of workpieces. The device is designed for expansion by connection to one or more additional banner tables.

Abstract: A modular model verification mounting system and method for building and verifying a production tooling verification model with a surface contour made of a workable material is disclosed. The mounting system can include at least one base member for supporting the production tooling verification model. The base member has a first uniform grid of apertures disposed in a first surface at a first predetermined distance from one another. At least one component member is provided for attaching to the base member in cooperation with the first grid of apertures. The component member has a second uniform grid of apertures formed in at least one second surface and disposed at a second predetermined distance from one another. At least one armature is connected to the component member in cooperation with the second grid of apertures. The armature member has at least one custom surface adapted to support the workable material.

Abstract: An apparatus for making tenons and mortises includes a table with a first opening in the top surface thereof. The top surface is disposed for receiving a sliding base assembly for a cutting device having a second opening therein. A work-piece holding assembly is detachably connected to a front portion of the table. The table and sliding base assembly cooperate to define the movement of the sliding base assembly in relation to said first opening. The work-piece holding assembly is positionable at preselected angles and varying vertical positions in relation to the top surface of the table.

Abstract: An integrated cutting and pressing board unit is for cutting, blocking and pressing of fabric parts for sewing together. A relatively flat cutting mat is formed of a solid plastic with a front face and a back face. A cushioned pressing board unit is intimately interconnected to the back face of the mat. The pressing board includes a support plate and an outer resilient pad interconnected to the support plate and an outer cover enclosing said plate and pad. The mat's front face and the outer cover each including a grid pattern with measuring indicia on the edges. The cover is formed of a fabric extended over the outer surface of the pad and board wrapped about the edges and interposed between the cutting mat and the pressing board unit. A handle extends outwardly one edge of the mat. The handle includes a hand opening including spaced edges. The handle opening has parallel edges spaced outwardly of the mat grid pattern and the pressing board unit.

Abstract: A set-up jig for a truss table is disclosed. The jig comprises (a) a body portion having a recessed portion on its lower surface configured to receive and slide upon a rail and further including a securing apeture and (b) stop means for constraining the movement of truss planks. A truss table suitable for use with such jigs is also disclosed.

Abstract: A vertical support post mounts a drill head thereon, wherein the drill head is reciprocatable relative to the post to effect drilling of holes within paper stacks mounted upon a reciprocating table orthogonally oriented relative to the post positioned below the drill head. A reciprocating table is mounted upon a plurality of rollers, wherein the table may be positioned relative to the rollers utilizing a plurality of adjustable stop members operative in association with a stop guide mounted to a rear edge flange of the table. A clamp member is pivotally mounted over the table to secure a paper stack thereon for a drilling procedure.

Abstract: Apparatus for grinding or polishing flat facets of gemstones comprising a mirror lap wheel base adapted to be mounted to a rotary drive and a lap film adapted to be mounted flushly upon the mirror lap wheel base.

Abstract: This invention relates to a router table comprising a horizontal platen having a central opening formed therethrough to receive a router bit. A fence is pivotally mounted on the platen to guide movements of a workpiece therealong for engagement with the router bit. The fence is thus adapted to be pivoted to a selected position on the platen. A scale is mounted along one edge of the platen to underlie an end of the fence. The operator can thus visually note the precise distance between the router bit and the fence when the fence is pivoted to a selected position on the platen. The fence and attendant components of this invention can be sold as an adapter kit to modify a conventional router table or work bench for use with the pivoted fence, and/or scale a micro-adjustment mounting block. A method for making a router table or adapting an existing router table to accommodate the pivoted fence is also described herein.

Abstract: A calibrated fence apparatus for radial arm saws wherein the calibrated fence apparatus consists of one of more fence units secured to the saw table top whereby a workpiece to is positioned against the appartus so as to be cut at a selected length which is set by the adjustment of a plurality of stop gauge members that are slidably mounted in the housing of the fence units. The stop gauge members are adapted to be releasably locked in a fully retracted position when a given measured setting is required for cutting several workpieces in an accurate and speedy manner.

Abstract: Manufacturing method for integrated circuit chip carrier or similar devices comprises the steps of producing the substrate as a discrete part by pressing ceramic powder in a precision mold and sintering the pressed part. The discrete substrates are then placed in a work holder in which a plurality of substrates are precisely located with both surfaces of each substrate exposed. The manufacturing steps of metallizing the substrates, imaging, plating, resist removal, etching, and so on, can then be carried out on all of the substrates in the work holder simultaneously. The processes can be applied to both surfaces of each substrate simultaneously and in addition, further steps such as assembly of an IC chip to each substrate and wire bonding can be carried out while the substrates are in the work holder. The process greatly reduces the cost of manufacturing chip carriers, particularly the type having terminal pads on both surfaces of the substrate and conductors extending between the major surfaces.

Abstract: A tool for cutting divisible strips of frangible material having pre-break lines disposed at predetermined spacings comprises an elongate channel support within which a slider captively slides. The support is adapted to receive a divisible strip therein through an open end thereof. The slider has a surface define a stop against which the strip will strike. The support has along its side walls, a series of markings arranged at predetermined pitches corresponding to whole numbers of unit spacings of the break lines between the stop on the slider and the open end face of the support. The support further includes locking means that resilient lock the slider at the positions of the markings such that by sliding the slider to one of the selected markings variously sized strips can be obtained by breaking the strips by a lateral pressure applied thereto against the end face of the support.

Abstract: A rectangular plate holder is formed with an approximately square recess defined by an upstanding perimetrical wall having two top studs on one side and one top stud on an opposed side wall lapped to be coplanar in a common plane. The base plates include five and three sets of mask clamping points for defining clamping points for five and three mask sizes. Each clamp includes a clamp assembly fastened to the base having a spring-loaded lower clamping arm below an upper set screw clamping point. A handle is fixed to one side between the opposed sides having the lapped studs.

Abstract: A workholder for holding a plurality of substrates, the workholder configured in a flat plate having a top surface and a bottom surface which is parallel to the top surface. The top surface spaced a distance from the bottom surface, such that the distance between the top surface and the bottom surface does not exceed a distance between an upper surface and a lower surface of an individual substrate. A plurality of substrate receiving openings extend through the plate, each opening being dimensioned to receive a respective substrate therein. A biasing spring means adjacent to each opening for biasing a substrate in the opening. The biasing spring means being between the top and bottom surfaces of the workholder and not extending beyond the top and bottom surfaces thereof. The configuration of the workholder allows the substrates to be held in the openings of the workholder, while having their upper and lower surfaces projecting beyond the top and bottom surfaces of the workholder respectively.

Abstract: A fence assembly for a tilting arbor table saw is provided in which a fence is detachably mounted on a fence carrier in either one of the two selected positions to present either a comparatively tall or a comparatively short work guiding surface and for use on either the left or the righthand side of the cutting blade. The fence carrier is mounted on an elongated guide that is attached to the saw table and which has front walls that define a slot running along the length thereof. A locking mechanism is provided on the fence carrier that includes a locking element located within the elongated guide that can be rotated between a position where it secures the fence carrier against movement and a position where the element can be removed through the slot in the front wall to dismount the fence and fence carrier from the elongated guide.

Abstract: Apparatus for holding and facilitating the cutting of translucent sheet material into predetermined shapes. A transparent plate is placed over a plenum formed by a support frame. A plurality of suction holes are formed through the plate having an enlarged diameter at the upper surface of the plate. Grooves are formed part way through the plate for guiding a cutting instrument. Alignment marks are provided on the surface of the plate for registering printed information on the material with the plate.

Abstract: An apparatus for inserting sheet material or textile fabric between the mating male and female rings of an embroidery hoop. The female ring is placed in a cutout in a support plate or template and the fabric to be embroidered is positioned thereover. The corresponding male ring carried by a reciprocating head is then activated to insert the male ring into the female ring with the fabric therebetween completing the assembly.

Abstract: A workbench comprises a worktop supported by a collapsible leg arrangement, the worktop being adapted to support a vice comprising separate fixed and movable vice jaws. The worktop is formed with elongated slots at predetermined locations each adapted to receive a depending hook-like formation of a fixed vice jaw. The worktop also is formed at predetermined locations at its edge and extending inboard of the latter elongate recesses into each of which movable vice jaws can be located and secured by complementary formations at the inboard ends of the recesses and movable vice jaws. The separate fixed and movable vice jaws are secured in an operational working relationship by the worktop and such relationship can be varied.

Abstract: A removable fence for a table saw is positioned on a saw table by a locking mechanism located on the fence which simultaneously grips a pair of blocks mounted on an endless flexible cable. The locking mechanism engages the blocks and raises them into frictional relation with an L-bracket mounted on the table thus preventing movement of the fence. The blocks are affixed to the cable at points equidistant from the plane of the saw blade thereby insuring parallelism of the fence relative to the plane of the saw blade. Utilizing the flexibility of the cable which permits lateral movement, the fence is removed by releasing the locking mechanism and moving the blocks laterally away from the mechanism.

Abstract: A fixture (60) for holding a pin-supporting shuttle (54) during assembly therein of terminal pins (20) for later insertion into a rigid board is formed with a sloping work surface (66) including a plurality of locating pins (68 and 70) for holding the shuttle (54) in two dimensions and a plurality of hold-down clips (74) for engagement with a groove (76) in the shuttle. A locking bar (72) positioned above the shuttle (54) is movable toward and away from the shuttle and carries a guide (136) for the location of assemblies (44 or 52) of terminal pins (20) in the shuttle. When the shuttle (54) has been fully loaded, the locking bar (72) is moved toward the shuttle to operate a securing mechanism (116) of the shuttle to secure the terminal pins (20) into the shuttle. A break-off groove (84) is located above a scrap chute (86) and is used for breaking pin-carrier strips (40 and 42) from the shuttle-mounted pin (20) after assembly.

Abstract: A wallpaper preparation board made of low cost rigid sheet material such as cardboard, paperboard, thin wooden, metal, or plastic sheets, etc., is formed from a plurality of substantially flat panels of the sheet material which are hingedly attached end-to-end to form an elongate board which can be folded in accordion style into a compact unit. A pair of hooks 11 and 12 are provided at the top of the board, with the hooks being adapted to engage the top of a door or the edge of the top landing of a ladder, so that the board can hang downwardly from the door or the top of the ladder. A pair of ears project upwardly at opposite sides of the upper end of the board to receive the opposite ends of a rod which is inserted through a roll of wallpaper. A knife edge extends across the board near the roll of wallpaper to aid in cutting lengths of wallpaper which are withdrawn from the roll.

Abstract: The invention is a work holding system for adjustably receiving and holding printed circuit boards for automatic machine component insertion. It includes a frame and a plurality of mutually cooperative adjustable board holders. The frame is U-shaped and is made up of framing members each having a linear scale affixed thereto. An adjustably positionable framing member extends across the U and is slidable along the opposed framing members toward and away from the base framing member forming the bottom of the U. Means are provided for indexing, locking the adjustably positionable member to the frame in any desired position. A linear scale is also carried by the adjustably positionable member and all scales have a common datum. The frame carries indexing means to index it to the machine which inserts components. A number of adjustable board holders are slidably carried by the base framing member and the adjustably positionable framing member to receive circuit boards therebetween.

Abstract: The present invention provides a container, package, or case and at the same time an article of surgical equipment for the storage, transportation, asepsis and surgical preparation of a medical device. The container is especially adapted for small, delicate, otic prostheses, the type used as a middle ear implant, such as a total or partial ossicular replacement prosthesis. The container comprises a base that constitutes a work area and has a first recessed area formed therein conforming to the shape and size of the prosthesis which it will carry. The end of this first recessed area opens laterally into a contiguous, coplanar second recessed area adapted in cooperation with the said work area to use in preparation of the prosthesis. Disposed on the base opposite the second recessed area and parallel to the longitudinal axis of the first recessed area are measuring apparatus having a scale set perpendicular to the said longitudinal axis.

Abstract: A picture frame making tool or jig comprises two frame rail clamps interconnected by a scale bar in adjustably spaced relationship. The frame rail clamps have jaws with shoulders adapted to be received in the picture receiving groove of the frame rail, whereby the rail is clamped between its outer edge and at the inside edge of its picture receiving groove. The scale is graduated to read in units of length related to the distance between the corners of the picture receiving groove, whereby the user can saw miter cuts at the ends of the rail, and the cut rail will be of the correct length to receive the picture in its picture receiving groove. The clamps further comprise corner clamps for clamping two miter cut frame rails together in angular relationship for assembly.

Abstract: A machine vise having a first jaw with a flat, inwardly disposed inner face, a second jaw with a flat, inwardly disposed inner face opposing the inner face of the first jaw, a jaw plate carried by each jaw and including a block-like body with a flat face in bearing engagement with the inner face of the jaw and a flat, inwardly disposed work-engaging surface, fastener means securing the body on the jaw, one or both of said jaws includes a vertically adjustable steady rest comprising an elongate work-engaging bar adjacent to and extending laterally of said work-engaging surface, an elongate vertical guideway in the body and opening at the work-engaging surface, a guide block fixed to the bar and slidably engaged in said guideway and an elongate vertical jack screw carried by the body for free rotation and against axial movement and extending longitudinally through said guideway and threadedly engaged through said block.

Abstract: A solder jig for use in constructing "stained glass" ornaments and the like having panels disposed at selected angles with respect to one another. The jig is useful in constructing ornaments by either the lead came method, or the Tiffany (copper foil) method. The jig includes a base having a flat top surface and support legs. The base provides a pair of threaded holes receiving adjustment bolts. Locking wing nuts are provided on the adjustment bolts. The heads of the adjustment bolts are equipped with bar-shaped supports. Each support includes a generally flat horizontally extending portion and a generally flat portion making an angle of approximately 140.degree. with the horizontal portion. The base also provides locating pins which protrude upwardly generally vertically from the top surface of the base. A pair of work surface providing members are notched to engage the locating pins and rest upon the supports.

Abstract: A longitudinally extending support is secured to the table of a table saw to which a guide rail is secured. A saw fence, having a shoe secured thereto, includes a clamping arm extending therefrom. The shoe slidably engages the guide rail and may be clamped together with the fence to the guide rail. A scale is formed on the guide rail and an index is attached to the shoe and positioned to register with the scale.

Abstract: Apparatus is disclosed and claimed herein for cutting logs into predetermined lengths with primary use in a hardwood veneer plant. A log conveyor is provided, preferably in two sections, with a cutting station located therebetween. The cutting station is equipped with a pivotally operated chain saw or circular saw which cuts the logs as desired. A log clamp means is provided immediately adjacent the cutting station to engage the log on two sides, preferably top and bottom, with the diameter of the log being irrelevant within wide ranges. When a log is first clamped, the cutting saw passes to square off the forward end of same. Located downstream of the cutting station are a plurality of individually operated log stops that are located in the path of travel of the log moving along the conveyor. A particular stop, depending upon the length of log cut desired, is actuated to move into the path of log travel.

Abstract: A work holding fixture for cylindrical workpieces comprising a first member having a flat base and a cylindrical portion upstanding from the base, a horizontal V-groove formed in the upper end of the cylindrical portion, and a pair of clamps having fasteners for fastening to the cylindrical portion, the clamps having cross-bars which span the V-groove for clamping cylindrical workpieces therein, vertical flats formed on opposite sides of the first member including the base and cylindrical portion thereof, the V-groove extending between the flats, the first member capable of being held via any of the three flats thereon for grinding cylindrical workpieces held in the V-groove of the first member, the first member also capable of being bolted via its base for milling cylindrical workpieces held in the V-groove of the first member, and a second member having a hollow cylindrical body which fits over and slides on the cylindrical portion of the first member, and aligned central apertures in the first and second m

Abstract: A jig assembly and method for the manufacture of prefabricated roofing panels having a plurality of overlapped shingle courses. The jig comprises a planar frame with a central opening and various guide bars and indexing means. The method involves placing the shingle courses on a substrate. The jig is used to locate the shingle courses in proper alignment with each other and the substrate.

Abstract: A transparent cutting board formed from plastics material has an embossed cutting surface on which mat boards and the like may be supported for trimming. A design is printed on a smooth back surface of the cutting board and includes intersecting guidelines and indicia which are viewable through the cutting surface to facilitate the trimming of mat boards and the like. The embossed cutting surface is defined by a multiplicity of spaced, upstanding, integrally formed projections. The projections resist marring while providing a relieved cutting surface across which cutting tools can be moved swiftly and easily.