Abstract: Apparatus for determining the diameter of an unprocessed ophthalmic lens to fit a particular eyeglass frame comprises a base and a guide on the base adapted to receive a card carrying diagrams of available lenses. A support on the base is adapted to receive the eyeglass frame to be fitted with lenses. The card guide is fixed relative to the base and comprises an elongate slot adapted to allow the card to slide within it. The frame support is mobile relative to the card guide in the direction at right angles to the slot.

Abstract: An archery bow sighting device is disclosed which includes a body member as well as a vertical adjustment block and a longitudinal adjustment arm and a lateral adjustment bar which, as interconnected and interlocked with respect to one another, provide three complete degrees of freedom of a grouping of preset pin blocks each carrying pins to allow sighting for facilitating archery accuracy. The interlocking adjustment members are each selectively capable of being fixedly secured to prevent adjustment of any one, two or three degrees of freedom of movement. The sighting pins themselves are individually adjustable such that when the relative spacing between each sighting pin is finally achieved, they can be moved as a group, vertically, laterally, or longitudinally thereby preventing the necessity of adjusting each and every individual pin position when the archery conditions change such as a variation in wind, lighting, or other indeterminable factors.

Abstract: A graphics protractor (10) for placement on a computer display screen (52) to determine direction changes for graphics commands has a circular ring (12) bearing indicia (14) representing relative angles with respect to a point (16) of origin on the ring (12). First and second sheets (18,20) through which display screen (52) is visible are rotatable with respect to the ring (12). The sheets (18,20) each have a straight line (44) movable into and out of registration with respect to the straight line (44) of the other sheet (20,18) by rotation of the sheets (18,20) within the ring (12). The sheets (18,20) have a graphics symbol (28) centrally located with respect to the ring (12), which is placed over a corresponding graphics symbol (50) on the computer display screen (52) to use the protractor (10).

Abstract: Clearance measuring apparatus for measuring the amount of clearance formed between circumferential edges of a component part and a component part assembling portion of a product main body used with a set jig holding the component part. A stationary claw is fixed to the set jig and is arranged to be arranged to be brought into engagement with the edge of the part. A movable claw is mounted to be movable in a clearance measuring direction and is arranged to be brought into engagement with the edge of the assembling portion. A detecting device is provided for detecting the amount of displacement of the movable claw in relation to the stationary claw.

Abstract: A closed loop dynamic alignment fixture which has a pivot plate which is pted to have a rate gyro mounted thereon and a base which is adapted to be mounted on a rate table with means for automatically adjusting the pivot plate relative to the base plate and rate table to allow for the testing of the amount of misalignment of an input axis of the rate gyro that is mounted thereon to allow misalignment data to be gathered on high drift rate gyros.

Abstract: The wheel alignment checking apparatus for use on a pair of wheels on a motor vehicle uses gage disks adapted to be secured to the wheels to be examined, a transverse support yoke, measuring plates mounted perpendicularly thereon and at least one angle measuring device mounted on one plate, for example by way of magnetic probes, so that one end of the device is on the plate and a head of the device engages the respective gage disk and any angle between the plane of the disk and of the adjacent plate is converted by a rotary potentiometer, for example, into a signal which may be read directly or after offsetting against other signals in a known way.

Abstract: A tank gauging bob is adapted to be releasably attached to a measuring tape for measuring the contents of a storage compartment. The bob comprises a generally cylindrical vertical elongated body having a measuring tape receiving lug and an extended portion which overlaps the lower portion of the tape and the point of attachment of the bob to the tape. The body and extended portion possess graduations on their outer surface whereby when the tape is attached to the body, the graduations form a continious consecutive reading scale with the measuring tape.

Abstract: A gauge for determining whether a conductive element, such as a cutting element, fence, gauge rod, gauge shaft, or guiding surface is oriented at a predetermined angle with respect to a reference surface is disclosed and claimed. The gauge includes an indicator, an electrical energy source, and at least one pair of contacts. When the gauge is placed on the reference surface, the contacts are abutted against the conductive element, and the conductive element is oriented at the predetermined angle, a series circuit is completed between the indicator and the energy source. As one example, the gauge can be used to ascertain the angle of a saw blade with respect to a saw table.

Abstract: A multiple-coordinate scanner having regulated scanning force for scanning objects, and preferably for length- and gear-measuring machines, is disclosed. The scanner detects the scanning force via a multiple-coodinate force measuring device and uses it to regulate the scanning force, in that corresponding straight-line guides in the multiple-coordinate scanner are deflected by drive units such that the resultant measuring force corresponds to a predetermined magnitude, regardless of the direction and magnitude of the multiple-coordinate scanner deflection.

Abstract: A position detecting apparatus for generating a position detection signal when the sensor comes into contact with a workpiece is equipped with a swivel mechanism which allows the sensor to move in any direction within a constant range at the time of contact. This swivel mechanism comprises a metal cylinder for supporting the sensor, a mechanism for moving in the vertical direction guided by a center shaft supported by a swivel bearing, and a mechanism for moving the metal cylinder and center shaft in the horizontal direction. When the sensor contacts the workpiece, a display, for example, is lit up by a position detection circuit.

Abstract: A vehicle simulating frame assembly is supported on a track recording surface by pairs of non-dirigible tractor wheels spaced laterally outward of track marking devices plotting parallel spaced track lines on the surface in response to wheeled movement of the frame assembly along a path recorded as a center guide line equally spaced between the track lines. The frame assembly is steered along the path by a dirigible guide wheel aligned with said center guide line and angularly displaceable by means of a steering spindle between angular limits corresponding to the maximum steering cramp angle of the vehicle being simulated.

Abstract: A multi-range, accuracy enhancing sight system for the archery bow comprising a vertical array of micro-telescopic or restricted-field direct-view collimator sights mounted so that both the field of each sight and the position of the parallax-free fiducial reference of each sight within the field are independently adjustable in the horizontal and vertical directions. In a preferred embodiment each sight is affixed to an elongated bridge member adjustably supported in both the vertical and horizontal directions at each end from threaded support rods affixed thereto. Nuts clamp the threaded support rods in corresponding vertically extending slots provided in a support member attached to the bow. Interaction between opposing supports facilitates, in a simple and convenient manner, the fine incremental adjustment capability required for the system to perform well. Alternative embodiments increase the isolation between adjustments and provide for vernier vertical adjustment.

Abstract: An improved apparatus and method for locating the center of the ends of wood stock for use such as in a wood turning operation. The apparatus includes an adjustable fence and stop member, with the apparatus adapted to be mounted on a band saw or other machine tool. An additional feature includes improved adapters for use with a live lathe center in a wood turning operation. The present invention results in safer operation and also provides a substantial reduction in the time and labor required to center the ends of a piece of wood stock.

Abstract: A measuring device for measuring characteristics of a drawing in which a carriage is supported by a pair of wheels for reciprocal motion on a line. A carriage pulse generator produces pulses proportional to the angle of rotation of the wheels rotatably supported at one end. A tracing lever extending from the carriage has a tracing implement on the other end. A tracing lever pulse generator generates pulses proportional to the rotational motion of the tracing lever. A phase signal generator receives signals from the tracing lever pulse generator and generates a phase angle signal received by a calculator in the carriage. The phase angle signals and pulses from the tracing lever pulse generator we used by the calculator to determine one or more characteristics of the drawing being measured by the tracing implement.

Abstract: A measuring apparatus for determining dimensional data for use in designing a coupler which is manufactured to be fitted between the free ends of already assembled pipes in a pipe system is disclosed. A first joint on which a first arm is slidably supported is pivotally connected to one end of a rod adapted for gauging the distance between the points of bend in the coupler to be manufactured. A first joint on which a second arm is slidably supported is itself slidably mounted on the rod for movement therealong. With this arrangement, measurement of the angle defined by relative rotation of the rod about its axis to the arms is limited to one point, that is, at either of the joints. In addition, this apparatus permits easy installation on the site of measurement. The relative movement between the rod and the second arm and that between each arm and its associated attachment plate for engaging to the respective free end, are automatically measured by an electrical detection device.

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 digital tape measure comprising a tape movable corresponding to a length of an object to be measured and on which detection marks are affixed, a detector for detecting the detection marks, a computer for computing a detection signal outputted from the detector corresponding to an amount of movement of the tape and a display for displaying a result of computation, characterized by dividing the case body into a housing for storing the tape and a housing for holding a measuring part comprising the detector, computer display, these two housings being detachably connected each other.

Abstract: A mechanical averaging gauge for averaging displacements at a plurality of locations along the surface of an object. The gauge includes a measuring unit which is urged into contact with the surface of the object. Several probes extend from the measuring unit and rest on the surface of the object. The probes are interconnected by means of cylindrical sliding members in contact with the rear of each of the probes. Trapezoidal sliding members are disposed between the cylindrical members so that the displacement of the measuring unit from a reference surface is the average of the various displacements of the individual probes. The arrangement also results in each probe contacting the surface of the object with substantially equal force. Therefore, the arrangement has application as a clamping device.

Abstract: A pivot assembly for a guide or marking tool (10) comprising a stock (12) with a reference edge (31) alignable with a desired datum (36), a blade (13) with a sighting, guiding or marking edge (16) and a semi-circular segment (18) provided with angle indicia (19). The stock (12) is pivotally connected to the blade (13) so that the angle between the reference edge (31) and the sighting edge (16) may be adjusted to a predetermined setting and the pivot axis (9) of the stock (12) relative to the blade (13) is located at the intersection between the reference edge (31) and the sighting edge (16) at all relative angular settings between the stock (12) and the blade (13). Pivoting of the stock and blade is effectuated by arcuate guide tracks on the stock (12) mating with corresponding depending flanges on the undersurface of segment (18).

Abstract: A precision caliper gage to measure an internal or external dimension of a body. The caliper gage provides for quick and easy attachment of measuring components and for automatic interplanar alignment of measuring components as they are attached to the gage. A mainframe has a portion parallel to a longitudinal plane and is adapted for attachment of a pivot member in alignment with the longitudinal plane. A first measuring arm is mountable on the pivot also in alignment with the longitudinal plane. A second measuring arm is mountable on the mainframe in alignment with the longitudinal plane and cooperates with the first arm to measure a dimension. A measurement indicator is mountable on the mainframe with a measurement-responsive indicator stem in alignment with the longitudinal plane and responsive to measuring movement of the first measuring arm.