Abstract: A combined seat and back rest assembly for a bathing enclosure wherein a combined seat and back rest member is hingedly positioned in the enclosure so that it is contained within the enclosure when the seat and back rest member is in a seating position. In a preferred manner, there is a recess in a wall of the enclosure and the hinges for connecting the seat and back rest member are located therein along with the seat and back rest member when in the back rest position. Also preferably, there is a spring biased hinge to provide positive retention of the seat and back rest member in the seating or back rest position. The seat and back rest assembly is particularly suited for a bathing enclosure with an entrance door.

Abstract: A float toy formed of water soluble material is arranged for flotation within a commode to provide for training of young children, and particularly boys, to properly train and provide for a focal point in the use of the commode. The float toy structure is arranged to include a plurality of rows of water soluble rods of various colorations to maintain interest and focus of children in use of the device.

Abstract: A multi-layered and multi-entry sleeping bag is provided which comprises several separate generally rectangular leaves or layers permanently affixed to each other by hinge means. Attached to such leaves are zipper means whereunder portions of such leaves can be removably attached to one another by such zipper means. In such fashion, multi-layered or multi-entry portions of the layers or leaves can be provided. The number of layers can be adjusted depending upon the camper's desire or warmth. The zippers can be unlocked, in which case the blanket can be fully unfolded.

Abstract: The present invention relates to a blanket for use with forced air convection systems, wherein the blanket includes multiple inlet ports. By providing a blanket with multiple inlets, the user has the choice of positioning the air supply or blower unit and the supply hose on either side of the patient. In addition, in a preferred embodiment, the inlet ports are resealable, thus allowing the user to switch inlets during use.

Abstract: A self-contained shoulder indexing apparatus is for use during imaging of a shoulder joint of a patient, with the patient lying on an imaging table slidable into and out of a primary imaging coil. The self-contained shoulder indexing apparatus includes an index mechanism having an index member lockable in any selected one of a plurality of sequential index positions. Table attachment means connects the index mechanism with the table for sliding movement with the table. A cuff support member is connected with the index member for movement with the index member. A cuff supported on the cuff support member at a location remote from the index member for clamping onto the patient's arm. The cuff is connected with the support member for movement with the support member and with the index member and is lockable with the index member in any selected one of the plurality of sequential spaced index positions.

Abstract: A drive mechanism for a hospital bed effects relative vertical movement of a base and a patient litter. The drive mechanism includes spaced, telescoping threaded screw assemblies, which are driven by a single electric motor through a train of gears having helical teeth oriented to offset inherent frictional forces of the screw assemblies. A support for the motor and a component of the drive train are made of electrically nonconductive materials to electrically isolate the motor, and are arranged to damp vibrations produced by the motor. Two coiled electrical cords extend between the base and patient litter, and are each received in a recess in the patient litter when the patient litter is adjacent the base. A sensor arrangement provides an electrical signal indicative of the relative vertical positions of the patient litter and base, and a manual drive arrangement is provided to permit the gear train to be manually driven.

Abstract: A head rest for supporting an individual's head when resting or sleeping to protect their coiffure which includes a pivoted base from which vertically extend a first "comb-like" cradle for engaging the individual's head above their ears and a second cushioned pad for engaging the head below the ears.

Abstract: Dock leveler operable as a runoff guard includes a center plate pivotally connected to a base plate, a lip plate pivotally connected to the forward edge of the center plate, and a locking bar hingedly connected to the bottom surface of the center plate. The second end of the locking bar is adapted to swing into abutting engagement with a stop member mounted on the base plate when the center plate is pivoted into its upright rearward position to brace the center plate against pivotal movement in the forward direction. The dock leveler also includes a mechanical linkage extending between the base plate and the center plate for pivoting the center plate, and a removable lever arm for actuating the mechanical linkage. A first pivotal paddle is engageably-aligned with the mechanical linkage, and a second pivotal paddle, which is operatively connected to the first paddle, is engageably-aligned with the locking bar.

Abstract: A polisher is supported on either a frame/arm arrangement or on a vehicle which is guided by track, and is arranged to be energized to polish a predetermined surface of an annular flange or the like, when relative movement is sensed between the polishing element and the surface to be polished. The polishing arrangement can be motor driven so that the polisher can be left to polish the surface in the absence of an operator.

Abstract: A paint brush assembly includes a clip member arranged to secure a replaceable paint brush head thereto, with the clip member having a u-shaped body, including first and second cooperating jaws engaged with the brush head. A sleeve is received over the clip member subsequent to its securement relative to the brush head. A modification of the invention includes a shield structure, as well as a scraper blade mounted to the sleeve in use.

Abstract: An easily manufactured and inexpensive window cleaning device has identical upper and lower plates forming a head for receiving a sponge and a squeegee on opposite sides. The upper and lower plates have a horizontal section and opposite longitudinal edges. A radial clamping section of each plate is disposed at one longitudinal edge for clamping to the sponge. An L-shaped shoulder is disposed at the opposite edge, for engaging a complementarily shaped foundation spline of the squeegee, from which the blade of the squeegee protrudes. The two plates are of identical shape, being placed in mirror image position when attached together, for example using rivets that also attach a stem for receiving a handle. The sponge is secured within the radial sponge clamping section without the need of an internal stiffener, and the squeegee blade is oriented to an advantageous angle by the channel formed by the opposing L-shaped shoulders.

Abstract: An improved mop construction includes a mop handle with an extendable handle portion, a mop head attached to the mop handle to form a rigid T shape, and a cushion layer enclosing the mop head. Strips of VELCRO.RTM. hook material are attached to a portion of the outer surface of the cushion layer in contact with the area to be cleaned. A loop fabric cleaning element such as a household towel or rag or other loop material surrounds the cushion layer and is secured thereto by engagement with the VELCRO.RTM. hook material.

Abstract: A gear cleaner for cleaning the speed change gear of a bicycle, comprised a mounting device, and a brush fastened to the chain stays of a bicycle by the mounting device with the bristles thereof disposed in contact with the gear wheels of the speed change gear of the bicycle, the mounting device comprised of two pivoted clamping plates fastened around the chain stays by a screw bolt, the brush having a circular mounting rod transversely linked to the brush head thereof at one end and fitted into a mounting groove on the lower mounting plate of the mounting device.

Abstract: A lobby dust pan of the type generally having a receptacle portion pivotally connected to a yoke. The yoke is flexible and is connected to a shaft. The yoke is deformable to enable latching means thereon to be retained with or released from a slot on the receptacle. The shaft in turn is connected to a novel handle having an axially extending body portion, a connecting portion formed proximate one end of said body portion and connected to the upper end of the shaft, and a transverse downwardly extending ridge portion formed at the other end of said body portion. The novel ridge portion of the handle permits the lobby dust pan to easily be carried over the arm of the user when moving from job to job, thus freeing the hands for other purposes. Also, it allows the lobby dust pan to be "hooked" over receptacle containers when temporarily not in use.

Abstract: A remote control system for actuating a central vacuum system from a remote location such as a vacuum cleaning hose handle that includes an air flow sensor. In the preferred embodiment, a small, lightweight vacuum sensor and a sensor amplifier that is connected to an LED bar graph meter and a comparator circuit are installed in the remote control hose handle. A low voltage power signal is transmitted through the vacuum cleaner hose and to the remote control handle for the purpose of providing electrical current to power the central vacuum system. The vacuum sensor will enable the consumer to instantly know if the vacuum is producing enough air flow to get proper cleanability. The sensor will also notify the consumer if the vacuum cleaner has a full bag or a problem at the vacuum unit, such as a clogged screen.

Abstract: An apparatus having utility for cleaning large, non-horizontal surfaces such as walls. A generally planar head is adapted to be oriented in a generally vertical manner during use, such that it will have a top, bottom, two sides, and front and rear surfaces. A fibrous pad is sized to cover a substantial portion of the front surface of the head. The pad is selectively removable from the head; but during use the pad is firmly held against the friction forces that are imposed on it by moving the head across the surface being cleaned. A plurality of reservoirs, a conduit, and a pump are provided for supplying a selected cleaning or rinsing liquid at a controlled rate to the top of the head. A low-pressure chamber adjacent the rear of the head is used to collect arty liquid that: has passed through the fibrous pad.

Abstract: A submicron size particle filter is mounted within a hot water vacuum extraction machine beneath a vertical riser tube which extends upwardly from an outer casing bottom wall. The riser tube is subject to vacuum pressure to remove contaminant and liquid free air from a recovery tank. An air filter chamber open to the lower end of the riser tube carries the secondary filter holder assembly consisting of a perforate secondary filter holder about an open pore filter element to filter out contaminants of submicron size. The secondary filter holder is formed of an open frame circular base member with a filter disk retaining ring snap fitted thereto and sandwiching the open pore filter element.

Abstract: A door closer having a housing defining a fluid containing chamber and a fluid reservoir and including a piston supported in the chamber for movement in one and an opposite direction in response to respective opening and closing movements of a door. A first fluid passageway defined by the housing provides communication between the chamber and the reservoir for the free passage of fluid from the chamber to the reservoir in response to initial movement of the piston in the one direction. A second fluid passageway spaced in the one direction from the first fluid passageway contains a ball check valve spring biased to closed position for resisting the flow of fluid from the chamber through the second passageway to the reservoir. The valve is threadably adjustable relative to the housing to regulate the resistance to fluid flow.

Abstract: A sliding panel includes top, bottom and side members. A corner roller arrangement has integral corner keys, whereby a corner member abuts the ends of the panel members at each of the corners thereof. Each of the corner members includes a spring biased roller whereby the rollers are self-leveling at each of said corners. A clip is arranged to adjust the roller to a plurality of inwardly and outwardly extensions relative to the top and bottom panel members. The arrangement is such that the corner members are effective as an installation guide for the sliding panel and impart an anti-rattle feature thereto.

Abstract: Mounting plate (10) composed of an upper portion and a lower portion for adjustably securing the support wall abutment portion of a furniture hinge to the support wall of a cupboard carcass in which the mounting plate lower portion (12) may be secured directly to the support wall and the mounting plate upper portion (14) is slidable parallel to the support wall onto the mounting plate lower portion through a sliding guide defined between the portions from the interior of the carcass in the direction out of the cupboard carcass until in engagement with abutments which come into engagement with one another in the predetermined end position secured against lifting away from the mounting plate lower portion.

Abstract: A separator for the separation of fibrous bark from core material of chopped or crushed stalks of a crop such as Kenaf having two or more hollow bodies for rotation on inclined axes, each having a perforated wall and upper inlet and lower outlet ends. Within at least one of the bodies is provided a plurality of longitudinally extending, circumferentially spaced baffles. With rotation of each body while downwardly inclined from the inlet to the outlet, a fibrous phase of the material is conveyed in turn to discharge from the outlet end of one body and conveyed into the inlet of another body, while a more solid phase is discharged through the perforated walls of the bodies.

Abstract: In a device for opening and cleaning fiber material with two opener rolls (2,4) rotating in the same direction and each being supported in a housing (3) side by side in parallel in a horizontal plane above grate segments (12, 14). The circles of action of the rolls almost contact in the horizontal, with a feeder (8) directed tangentially onto the one end of the first opener roll (2) in the fiber transport direction An outlet (30) protrudes horizontally from the housing (3) on the side of the housing (3) opposite the feeder (8) , through which an air flow (6, 34) feeds and discharges the fiber material, respectively. It is provided that, via the feeder (8), the fiber material is directed vertically from above between the housing (3) and the opener roll (2) onto that side of the first opener roll (2) facing away from the second opener roll (4).

Abstract: The invention relates to a device for the processing of a plurality of fiber slivers, in particular a drawing frame with drawing-in cylinders for joint feeding of the fiber slivers to the device. A funnel with a passage opening is provided in the device to unite the fiber slivers into a fiber sliver amalgam as the fiber slivers go through the funnel (1). The cross-sectional area of the passage opening of the funnel is adjustable.

Abstract: An apparatus for holding eyeglasses, with one or more temples, including a substantially planar member with means for removable attachment to a protruding clothing portion and means for removable reception of a temple to secure the eyeglasses when not in use. Preferred embodiments of the apparatus include a slit-like aperture for clothing attachment and a dimensionally self-adjusting member for grasping an eyeglass temple. The one-piece design promotes durability and allows unworn eyeglasses to be held inconspicuously and close the wearer's person. The holder may be easily removed and/or concealed when not in use.

Abstract: A worn look carpet weave for an oriental rug consists of a plurality of warp threads that run vertical on two levels, one directly behind the other. A plurality of ground weft threads run horizontal between the two levels of the warp threads, so as to be utilized as a strong foundation for the oriental rug. A plurality of decorative weft-wrapping brocading threads run horizontal, with each looping successively about a group of two of the warp threads on the two levels making a continuous chain structure. The decorative weft-wrapping brocading threads alternates with the ground weft threads, so as to form a very fine tightly made oriental rug.

Abstract: A method of processing an endless synthetic yarn is disclosed, wherein the yarn is withdrawn from a spinneret, and advanced into contact with a feed system which is operated under conditions which produce slippage between the feed system and the advancing yarn. As a result, a constant frictional force is exerted on the yarn irrespective of fluctuations of other parameters, and a precisely defined reduction of the yarn tension is achieved which facilitates the subsequent winding of the yarn into a package.

Abstract: A process for separating a glass-silicon-glass layer package wherein the glass-silicon-glass layer package is produced at a minimum process cost and is constructed from a plurality of acceleration sensors constructed with micro-mechanical structure techniques. At the same time, dirt is to be prevented from entering the acceleration sensors and the connection contacts are to be freed automatically. Separation is effected substantially by crosswise cutting and subsequent breaking. In order to prevent an "opening" of the acceleration sensors when cutting in one direction, i.e. transversely relative to the flexural resonators, and to achieve a defined breaking, one glass disk is cut until a predetermined breaking point is reached and the other glass disk is severed in a parallel plane. An intermediate layer which surrounds the connection in a U-shaped manner, serves as a blocking layer arranged between the two dividing planes and impedes a bonding of the glass disk and the silicon disk.

Abstract: The machine comprises a base (3), a first mandrel (4), a second mandrel (5) nd a third mandrel (6) for the holding and positioning of the profile or bar (2), and structure (7, 8) to mount at least the second mandrel (5) and the third mandrel (6) in cooperation with the base (3), so that they can be displaced in translation relative to the base along a same machining axis (9).

Abstract: In a combined working machine, a positional relationship between a machining position of a workpiece and a tool can be determined to an optional value by a combination of a slide amount of a carriage along a slant surface, a slide amount of a tool post along another slant surface, a pivot amount of a turret, and a rotational amount of a chuck of a headstock. That is, the tool of the tool post can be brought into contact with the workpiece from a slant direction, and a combined working including cutting by a cutting tool and drilling in a slant direction by a drill can be performed. Further, the tool of the tool post can be moved to the desired machining position of the workpiece from the slant direction, and thus the moving amount of the tool post in a vertical direction can be reduced to lower a height of a machine tool and to give stabilization thereto.

Abstract: A system for marking elongated wire and for cutting the wire and stripping insulation therefrom comprising first structure operable to mark the wire; second structure operable to cut the marked wire and to strip insulation from the wire; the wire extending between and movable between the first and second structures, the first and second structure comprising separate stand-alone devices; and control structure, including an external computer, operatively connected with the first and second structures for controlling operation of the first and second structures in time sequence relation to wire movement therebetween, and/or to control wire marking, wire cutting, and insulation stripping length.

Abstract: A machine for fastening rail plates to cross-ties, utilizing spikes or the like, and method therefore, is disclosed in the present invention. The preferred apparatus of the present invention teaches a system wherein there is provided a conveyor for conveying a plurality of laterally arranged, juxtaposed ties in bulk, a loader or retriever for loading a single tie upon a template conveyer, and a positioner for positioning the single tie during the pre-plating process. The present invention further includes a template system for securing the cross-tie or tie in place, feeding and positioning the rail-plate in place, feeding, dispensing, and positioning the spikes in place, driving the spikes, and discharging the processed tie, the template system utilizing as a principle motive force the displacement of the template reciprocating drive piston for positioning the template, as well as dispensing and positioning the spikes and plates.

Abstract: A tool for installing a gasket and a snap ring including a shaft, a first plate attached to the forward end of the shaft, a second plate slidably carried by the shaft, a spring disposed about the shaft between the first and second plates, and a sleeve that is free to slide over the shaft and engage the second plate. The first plate has a loading surface with a loading groove for receiving a snap ring and a shoulder for holding a gasket. A plurality of openings are formed through the first plate, communicating with the loading groove and approximately equally spaced about the groove. A plurality of rods are attached to the second plate, each rod slidable in one of the openings. In use, the loaded tool is inserted into a hollow pipe or pipe fitting having an internal flange and an internal seating groove, such that the gasket is positioned against the flange and the ring is in the approximate plane of the seating groove.

Abstract: A method of forming an identification band from a tube with a constant circular cross-section along the majority of its outer circumference. The tube holds an indicia, and the information on the indicia is magnified by the generally circular shape of the tube. The circular shape also minimizes contact between the band and the wearer. Contact is limited to line contact with the skin, and irritation of the skin is reduced by eliminating any edges which may cut or scrape the skin. A method of forming the identification band includes the steps cutting a predetermined length of tube, placing an indicia therein, and completing the assembly by inserting an untapered cylindrical plug into each end of the tube.

Abstract: A flush glass window seal for motor vehicle windows having a substantially rigid, dual durometer thermoplastic elastomer, carrier component and a resilient elastomer, sealing insert which are mechanically locked together. The carrier components are extruded or molded in one piece to conform to the generally U-shaped vehicle opening and the insert is extruded in a generally flat configuration suitable for application of a slip surface thereon, prior to its insertion into the carrier.

Abstract: A method for making an anti-skid apparatus for an automobile tire includes coating a plurality of core materials with rubber to form a plurality of cords; placing the cords in grooves of a preliminary molding plate and knitting the cords to form a net body; molding the cord into a non-vulcanized net body which inherently possesses crossing sections-where one of the plurality of cords lies on top of another of the plurality of cords; pressing the crossing sections so as to cause the core materials at the crossing sections to become linearly aligned; and vulcanizing the pressed non-vulcanized anti-skid net bodies to form a vulcanized net body. The step of pressing the crossing sections temporarily fixes the respective cords to each other at respective crossing sections. Also, affixing elements are attached to the vulcanized net body to detachably secure the vulcanized net body to an automobile tire.

Abstract: The present invention relates to a method and a fixture system for providing a fixture for the positioning and clamping of details to be assembled, preferably by welding. According to the method drawing information for the assembled product is provided in a computer program, a zero position on the product is established, an installation plan for the fixture to be built is provided by determining support positions in a system of coordinates, for the fixture relative to the product, based on the drawing information and starting from the zero position on the product, and the fixture is built up according to the established installation plan and from standard fixture components (1, 5, 7, 14) selectively interconnectable by means of hole systems (2, 6, 18, 15) extendable along the X-, Y- and/or Z-axes of the coordinate system.

Abstract: An apparatus (10) and method for centering and gripping a work piece (WP) having an internal cavity (60) is disclosed. The apparatus includes a generally longitudinal post shaft (11) in an internal chamber (21) that has a head portion (42) for supporting the cavity end wall (62) and a plurality of pivot bars (22) and clamp bars (31) for engaging the cavity side wall (61) and cavity throat (63). An air driven slidable push rod (41) disposed within the shaft (11) in an internal chamber (21) causes the bars (22,31) to move from a retracted position to an expanded position. The apparatus can be inserted into the work piece (WP) while the bars (22,31) are in the retracted position and then gripped and centered by activating the push rod (41) and expanding both sets of bars (22,31).

Abstract: Plastic deformation and nicking of the conductors (30) of the end turns (20) in the stator (10,12,14) of a dynamoelectric machine during the installation of a temperature sensor (26) is avoided by locating the temperature sensor (26) in a gap (22) between the coils defining adjacent end turns (20), thereby providing a machine capable of rapidly responding to excess heat even in a locked rotor situation before detectable levels of smoke, gas, and odors are generated.

Abstract: A coil is produced by wrapping a primary winding of the coil onto a core rod of a wrapping machine, arranging a secondary winding of the coil on a winding form and pushing it coaxially over the primary winding, pulling the core rod out of the primary winding, simultaneously inserting an iron core into the primary winding, and moving along a housing which accommodates the iron core onto the ignition coil, and filling the housing with casting resin to form a plastic block which surrounds at least the primary winding.

Abstract: A process for producing a semiconductor device having a package with a semiconductor element molded therein, and a plurality of leads, each constituted by an inner lead located inside the package and an outer lead located outside the package, the leads being arranged in a line at a predetermined pitch, and the semiconductor element being electrically connected to the inner lead of each of the leads, wherein each side edge of each of the outer leads is flat.

Abstract: A conductive network, which can be flexible or rigid, can have self-aligning conductors which connect with corresponding conductors of other networks. The conductive network can be fabricated into densely packed contact clusters for use as electrical interconnectors or circuits. The contact clusters, which can be configured to substantially any shape, are the essential components of high density connector assemblies. The methods and apparatus for making the conductive network and cluster contacts are also described.

Abstract: Simultaneous attaching of wires (13) through the pressure-connecting method to a number of electrical connectors (11) arranged in a row, makes it possible to process a larger number of electrical connectors at one time. A position-determining device (55) is provided for each electrical connector (11) which makes it possible to determine the position of each pressure-type contact of said electrical connectors (11) arranged in a row. The positioning determining device (55) is used to align a plurality of the electrical connectors (11) so that tolerance differences are not cumulative. FIG. 12.

Abstract: A tubular shaft has a portion of reduced inner diameter at a location where joining to an apertured member is desired. The aperture in the member is lobed with splines in the lobes and has an undercut groove or grooves, and is hardened. The shaft is inserted in the aperture and the reduced inner diameter portion is expanded to force the shaft material into the lobes and groove and around the splines to form a connection which resists torque and axial separation. The tube expansion is effected by forcing a series of balls through the reduced diameter portion, each ball being slightly larger than the reduced diameter and larger than the previous ball but smaller than the remainder of the shaft I.D. A crankshaft is assembled with this method wherein counterweights have lobed apertures to receive end portions of crank pins and main journals having reduced I.D.'s.

Abstract: A hollow blade for a turbomachine comprises a unitary body having a multiplicity of transverse cavities in at least the airfoil shaped portion of the blade, and plugs disposed within the cavities and restoring the surface continuity of the intrados and extrados faces of the aerofoil shaped portion, the plugs being rigidly secured to the unitary body, such as by welding.

Abstract: A heat exchanger, typically a condenser for a motor vehicle air conditioning system, comprises a set of tubes aligned with each other and having their ends extending through apertures into the interior of a tubular wall of a header of the heat exchanger, the tubes being secured to the header. The tubular wall is formed with at least one internal projection against which the end of each tube is abutted.

Abstract: The invention is directed to an electric shaving apparatus having a housing and a shaving head assembly which is adapted to pivot relative to the housing about a pivotal axis Z and is comprised of a shaving head frame, a shaving plane formed by at least one outer cutter having arcuate extensions to the longitudinal sides of the shaving head frame, and of at least one inner cutter operatively associated with the outer cutter and driven by a drive mechanism, wherein the outer cutter is arranged in an outer cutter frame member and the outer cutter frame member is mounted in the shaving head frame so as to be pivotal about the pivotal axis Z.

Abstract: A bi-directional razor device is formed of a narrow, elongated head and a transversely extending, integral hand grip formed of molded plastic material. Two pair of narrow, strip-like razor blades are embedded in the head, with one pair extending in one direction and the other pair extending in an opposite direction at an acute angle relative to the first pair. The blades extend along the length of the head. Thus, the user may move the razor head in one direction for contacting one pair of blades against the user's skin for cutting hair and then move the handle in the opposite direction while the blades remain engaged upon the skin for cutting hair in both directions.

Abstract: A knife blade and knife blade assembly are disclosed for cutting food products into sticks or slices without causing surface cracking. The knife blade has a cutting portion defining a cutting edge and is mounted in the knife assembly such that a tension force is exerted on the knife blade in the plane of the cutting edge. The cutting edge of the knife blade is not sharp, but is generally flat and extends between parallel sides of the knife blade. The individual knife blades are formed of stainless steel and are electro-polished to remove any surface defects or sharp edges which may produce stress concentrations. This enables a significant tension force to be applied to the knife blade without diminishing its useful life. The electro-polishing process may also round off the corners of the juncture between the flat cutting edge and the parallel knife blade sides.

Abstract: A measurement tool adapted for measuring surfaces of a known desired curvature and specifically grooves, holes, chips, gouges, chafing and/or out of round areas therein. The measurement device is constructed with an attachment member having a curvature matching the "set up" curvature of the part to be measured. The measuring member or probe, is sharpened to permit it to extend through an aperture formed in the attachment member for facilitating its initial setting relative to the attachment member and the surface to be measured. Any movement of the probe during measurement is then a manifestation of a deviation from the original "set up" curvature.

Abstract: A drafting board includes a base, a shoulder formed in the perimeter of the upper surface of the base, a magnetic board engaged in the shoulder of the base, two holes formed in the bottom surface of the base, and a rod engaged in each of the holes of the base for elevating the upper edge of the base. The upper edge is located higher than the lower edge and the base is supported by the rods in a sloped fashion.