Abstract: A pregauging tool for the stop assembly of a cutting device wherein the pregauging tool has a scale having an elongated configuration and opposed substantially parallel longitudinal edges. At least one series of graduations extends longitudinally along the scale and a flange member is mounted at the end of the scale associated with the zero index of the graduations. The flange member has a linear first side adapted for securement along a cutting plane of the cutting device. An indicator member is slideably fit to the scale and has a cantilevered abutment arm extending in a transverse direction relative to the longitudinal dimension of the scale. The abutment arm has a lead end defining a registration plane for reading of the scale graduations, and has a trail end spaced apart from the lead end by a distance equivalent to the portion of the graduations covered by the flange member.

Abstract: A lettering device having a writing arm (4) that is movable between a position of repose and a writing position and that receives a stylus that has a Bowden control (29) for moving the writing arm (4) between the position of repose and the writing position. The Bowden control is guided via an actuating lever (42) that is pivotably secured to a guide bearing (8), so that it is guided over two application zones (43, 44) displaced on opposite sides of the pivot axis (41) of the actuating lever (42) and spaced apart from one another. By tensing the Bowden cable control (21), one section (42') of the pivoting actuating lever (42) lifts the writing arm (41).

Abstract: An alignment structure provides means to locate a self-inking stamp in a plurality of positions over articles, which vary in size, to make repeated impressions for quantities of the same article, at a desired location. An adjustable nesting bar holds the self-inking stamp in an elevated position across a stationary and an adjustable gauge bar in parallel position to one another, gauging the article on two sides. Adjustable depth gauges mounted on the gauge bars provide gauging on a third side of the article.

Abstract: An adjustable copyholder comprises a base and a cantilever arm having a plurality of cantilever arm segments attached thereto, and a copy support plate mounted at the free end of the cantilever arm. The cantilever arm is connected pivotally to the base. The cantilever arm segments are connected pivotally with each other. The copy support plate is connected pivotally to the cantilever arm. The pivot joints used to extend the cantilever arm have single pivot axes which are parallel to each other, horizontal and transverse to the cantilever arm, wherein these pivot joints are manually adjustable, at least controllable frictionally, the pivotability of the cantilever arm segments connected pivotally with each other being associated with a securing mechanism for each pivot joint.

Abstract: An accessory for use with an overhead projector comprises a platen which has a generally rectangular, transparent central portion and an opaque peripheral portion bounding the central portion. In the region of peripheral portion the platen has two mutually orthogonal, upstanding ridges, each extending substantially the entire length of the corresponding side of the central portion and each being defined by a pair of opposed inner and outer ridge-defining surfaces. The inner ridge-defining surfaces of the two ridges serve to locate a plurality of superimposed transparencies in register with each other and with respect to the central portion. The outer ridge-defining surfaces of the two ridges each form a guide surface for guiding a highlighting strip, or an occlusion or revelation screen.

Abstract: An enclosure for an electrical data input apparatus which is formed of a top section and a bottom section to form a case. The case has a top section which provides operational access to the electrical data input apparatus, such as a graphics tablet input device, with additional accesses for switching functions, amenable both to right-hand and left-hand use by an operator. The switching function accesses are distinguished one from another by different access hole shapes in order that appropriate switching functions may be effected via those switching function accesses without the necessity of looking away from the computer display and thereby breaking the attention of the operator.

Abstract: A three dimensional graphics tablet for determining the three dimensional coordinates of points on an object placed on a supporting plane. The apparatus includes an articulated arm having at least two link elements connecting a contacting tip element to the support for rotational movement about a plurality of mutually angulated axes. By means of the arm articulation, the contacting tip element can be moved to arbitrary locations within a defined volume. Potentiometers are provided for measuring each of the angles of rotation about the mutually angulated axes. These potentiometers generate signals which collectively determine the coordinates of the location of the tip element. Embodiments are disclosed having three and four degrees of freedom and a portable embodiment including a clamp or bracket are disclosed.

Abstract: In a preferred embodiment, there is provided a combination of a windowed indexed calibrated T-square and a precision-lined drafting board for use therewith for providing scaled drawings on drafting paper transparent to the drafting board's precision lines, the window being positioned in the helve head such that the index line positioned along a lower edge of the window is alignable with and positioned over the drafting board's precision lines when flat roller surfaces of spaced-apart x-axis aligning rollers on the helve head are pressed flushly against upright flat linearly-extending edge of the drafting board with the edge extending along the x-axis of the drafting board, with the roller surfaces being of broad width affording non-wobbling stable positioning of the blade of the T-square relative to an upper face of the drafting board when the T-square has the roller surfaces pressed flushly against the flat surfaces of the upright flat linearly-extending edge of the drafting board.

Abstract: Magnetic devices are described which include a sheet of magnetic material having a relieved groove/ridge configuration, all the grooves and ridges being straight and parallel, and evenly spaced apart. Such devices can form part of apparatus for use in connection with a dry transfer sheet in assisting setting out a correctly spaced and aligned legend on a desired receptor surface. The apparatus can comprise a base member which, e.g. may be attachable to a designed receptor surface and a sheet-holder member. The sheet-holder member can consist of a bar to which a sheet of dry transfer material may be attached. One side of the bar of the sheet-holder member has a rib which may engage in the base member in one of the parallel grooves therein. The lateral spacing of the parallel grooves and the vertical spacing of lines of letters on the dry transfer sheet correspond to ensure accurate horizontal alignment of letters transferred from different rows on the transfer sheet to the final receptor.

Abstract: An improved hand-held flat conductor applying apparatus for applying to the receiving surface of a glass pane such as the rear window in a motor vehicle, a plurality of equidistant essentially straight lengths of pre-glued flat conductor for defining the heating lines of a rear window resistive defroster. The apparatus uses a confining guide edge of predetermined configuration for setting a datum or base line for the heating lines, a translation carrier mounted to the confining guide edge and confined thereto except for translation therealong, a rigid bar secured to the translation carrier through a suitable pivotable foot and locking means therefore, and a conductor laying head supported to the rigid bar and positioned at anyone of a plurality of predetermined points along the rigid bar.

Abstract: Apparatus is described which may be substituted for the vertical rule on a conventional drafting machine arrangement having a pair of rules set at right angles to one another. The apparatus includes a clamp for a transfer sheet which is movable in steps. Used with a dry transfer sheet with lines of letters on it, the interline spacing of which is an integral multiple of the stepped movement spacing of the apparatus, and fitted to a conventional drafting machine, the apparatus assists in applying accurate baseline legends to drawings using dry transfer rather than hand lettering.

Abstract: A holding and guiding device for lettering and drafting instruments adapted to be mounted on a traveling-carriage drafting machine. An additional slide rail is disposed in parallel to the vertical slide rail, with the additional slide rail carrying a slidable carriage. A flat instrument holder is provided with a pivotally mounted head, with the flat instrument holder being disposed below the additional slide rail and extending under the vertical slide rail.

Abstract: A guide rail for a drawing machine carriage has a single part or multipart rack configuration for guiding a carriage with a longitudinally extending slot through which projects the supporting arm of the carriage. In order to achieve simple and reliable dust protection, the slot is provided with a covering element which extends over the slot without impeding the mounting arm. The covering element may be a dustproof sealing lip or a continuous band which is attached to the carriage.

Abstract: A drawing board for use with dry transfer materials is described. The board has a track along one edge and a paper clamp along an adjacent edge. The track bears a bar parallel to the paper clamp which in turn bears a carriage to which a dry transfer sheet can be affixed. The carriage may be racked up and down to bring an appropriate line of dry transfer letters over an appropriate place on a piece of paper held in the paper clamp. The carriage may be provided with a mechanism for holding it firm and then moving the dry transfer sheet clamp slightly. This mechanism enables words to be built up and which the letters are evenly spaced easily and quickly.

Abstract: There is herein described a tool for accurately aligning a plurality of plates on a plaque board, the tool including a plurality of plate-holding finger members adjustably positionable along an elongated arm member which is itself adjustably positionable along a pivotal portion of an elongated guide member, the arm member along with its finger members being pivotally movable upwardly to facilitate the placement and replacement of plate boards on a base plate of the tool without the danger of scratching the boards.

Abstract: A guide structure designed to locate blank spaces on a displayed form of a word processor through the utilization of a line scale and a character scale movably attached to and selectively positionable over the face of a conventional paper or like material form wherein indicia formed on each of the scales serves to establish coordinates of any blank space on a material form regardless of its location. The coordinates are then related to the operator of the word processor along with informational instructions for filling the blank space.

Abstract: A seam marker includes a flat base with an upstanding shoulder so that a piece of cloth may be placed on the base with an edge against the shoulder. An elongated strip extends over the cloth with a straight edge parallel to the shoulder and the strip is secured to the base and is resilient so that it may be pressed down against the cloth to clamp the latter against the base at which time a seam line may be marked along the straight edge of the strip.

Abstract: A drawing instrument and locking apparatus therefor in which the locking apparatus can be made of polyethylene, polypropylene or the like and is not subject to fragmentation or permanent damage during normal use. A displaceable member of the locking apparatus is displaceable into a groove of a drawing board to lock the drawing instrument in position thereon. An outer ring member freely rotatable through 360 degrees around the displaceable member when the displaceable member is in its raised condition engages the displaceable member when the displaceable member is in its depressed condition upon rotation of the ring member to unlock the apparatus.

Abstract: A fastening apparatus for a measuring device including a bending resistant scale comprises a plurality of resilient fastening elements for mounting the scale to a support surface. Each of these fastening elements is securely mounted to a support surface and acts resiliently to apply a mounting force to the scale, which mounting force is sufficient to hold the scale in place, substantially without distorting the scale. In the illustrated embodiment the mounting force is independent of the force with which the fastening elements are mounted to the support surface.

Abstract: A template guide for use with a parallel motion protractor or drafting machine having a substantially flat elongated base member with a longitudinal ridge extending substantially parallel to the edges of the base member and projecting normal to one surface of the base member, the ridge dividing said base member into first and second portions, the first portion being of a size efficient to cradle a drafting template and allow a drafting template to be moved longitudinally along the ridge parallel to a drafting arm of a parallel motion protractor, and the second portion being of a size efficient to cradle the drafting arm of a parallel motion protractor such that the ridge extends parallel to the edge of the drafting arm, and means for releasably securing the base member to the drafting arm such that the ridge is maintained parallel to the edge of the drafting arm.

Abstract: A drafting apparatus for use with a drawing board having a side edge portion and a planar drawing surface in which a guide track extends in spaced relation to the side edge of the board and is mounted from the board for adjustment into several different positions in relation to the board. A T-square having a head body member provided with wheels for rolling engagement with the guide track and carrying a strip of material serving as an armature for coaction with a pair of spaced magnets carried by the head member of the T-square. The magnets are carried on a bar member provided with pivotal movement about a longitudinal horizontal pivot axis parallel to the side edge of the board, the magnet carrying bar member having an actuator portion for releasing the magnets from the armature strip. A slidable lock element is carried by the actuator portion to lock the magnet carrying bar member in release position if desired.

Abstract: Automatic marking is accomplished by providing a housing that moves along a calibrated guide. The housing is operably connected with a microcomputer which receives preselected marking data. The housing carries a sensor and a marking device. As the housing moves along the guide, the sensor reads the calibrations and registers same with the data in the microcomputer. In response, the marking device applies appropriate marks on an associated object.

Abstract: A lettering device of the type having a keyboard for choosing the symbols to be written, comprising a writing part, which may be separated from said keyboard, wherein the pen is selectively moved by two geared motors, in two coordinate directions, to correspond to the symbols to be drawn. The writing part is adapted to be attached to the symbol head of a drafting machine, wherein two motors, that selectively move the writing pen along cartesian coordinates, are arranged stationary, relative to each other. The writing arm which holds the writing pen is movable, in the one coordinate direction, upon a first movable guide track that itself is movable in the other coordinate direction by a first motor, and also movable in the other coordinate direction upon a second guide track, that is movable in the direction of said one coordinate by a second motor.

Abstract: The present drafting apparatus comprises a rail (6) removably secured along the edge of a drafting board. Normally, the rail (6) serves for guiding a T-square (2, 3) which is, for example, pulled against the rail (6) by a magnetic force. If the rail (6) is released from the brackets (8) it may be used together with the trammel heads (7) as a beam compass. For this purpose one of the trammel heads (7) is equipped with a compass needle tip (19) and the other trammel head is equipped with a compass drafting lead tip holder (16). A scale (21) attached to the rail (6) permits the precise adjustment of the radius. Further, the rail (6) when removed from the brackets (8) may also be used as a straight edge for drawing long, straight lines.

Abstract: Disclosed is an electronic integral drafting instrument which measures its own linear displacement and displays any desired multiple or submultiple of the actual displacement. The instrument includes a straightedged plate which houses: a displacement sensor with a driving wheel which projects beneath the plate, an electronic up-down counter and calculator type circuit, a scale factor keyboard, an electronic digital display, and a sensor which detects and annunciates if the displacement sensor driving wheel does not make proper contact with the drawing media. One embodiment of the invention is easily attached to conventional drafting machines as a replacement for regular straightedges and scales. A second embodiment of the invention may be used without a drafting machine. The leading straightedge of the instrument can be lifted or lowered into contact with the drawing media. An extension straightedge may be attached to the leading edge of the instrument.

Abstract: A clamping device for clamping a straight edge to a board to hold such straight edge in place during use thereof. Two clamping members are moveably interconnected to opposite ends of a shaft which extends through an aperture in a bearing member. The bearing member is connected to the straight edge, and the shaft moveably extends through such aperture. The clamping members are provided with locking means, and when such means are operatively locked one clamping member engages and exerts a compressive force against one surface of a board and the other clamping member engages the bearing member to thereby exert an opposing compressive force to lock the straight edge in place.

Abstract: The alignment device is utilized for guiding a hand manipulated power tool on the surface of a planar workpiece and includes an elongate guide member having a guide surface for guiding the shoe of the power tool and an elongate gauge member having an alignment edge adapted to be aligned on and with a desired line of cut on the surface of a workpiece. The elongate gauge member is releasably fixed to the guide member. The guide surface is parallel spaced to the alignment edge a predetermined distance equal to the distance from the shoe of the power tool to the path of travel of the cutting member of the power tool. The device also includes clamps for holding the alignment device to the workpiece and mating coupling members at each end of the device so that two or more devices can be coupled together to provide a composite longer alignment device.

Abstract: A drawing board device is described of particular value in composing signs using dry transfer lettering sheets. The board has a base and a horizontal rule mounted thereon and capable of moving vertically and horizontally. The rule has one or more magnetic clamps for sheets of transfer material, and one or more sets of register pins for registering with e.g. a preprinted line on or preprinted holes in the sheet. The vertical movement of the rules is preferably stepped, the interline spacing between the lines of letters on the sheet being an integral multiple of the step length.

Abstract: This invention relates to electric or electronic musical instruments for the production of audible musical composition ranging from quite simple to very complex arrangements. More particularly this invention is a device for the creation and editing of a musical work produced by the composer or arranger and which enables the immediate rehearsal of the fully or partially completed musical arrangement.The device is designed to be connected to an electronic musical instrument which replays the recorded composition. Such an instrument, for example, can be an electronic organ and/or an electronic musical synthesizer which accordingly either incorporates or is connected to the device.

Abstract: Improvements in devices for measuring, laying out and ruling keyline boards for printed materials; a device for pre-ruling artists' and printing boards including a baseboard adapted to receive a keyline board thereon having precisely positioned location pins surrounding the work area and a slotted ruler for use with the baseboard, such producing page size and crop mark lines, bleeds, automatic register mark rules and all horizontal and vertical ruling required for 11 by 17 inch, 81/2 by 11 inch and 51/2 by 81/2 inch formats.