Abstract: A gauge system determines the thread pitch diameter of an internally or externally-threaded article and includes a standard measuring caliper with styli selected and fitted into the caliper to correspond to a particular thread type and pitch. The styli are mounted into the caliper to provide a reference zero position to the calipers for either externally or internally-fitted articles. A processor is associated with the calipers and styli and is of a type which is configured for hand-holding. The processor has input buttons for inputting a descriptor of internal or external threads, thread type and thread pitch. The processor software receives and processes information received from the caliper to calculate the thread pitch diameter. A display connected to the processor presents the thread pitch diameter.

Abstract: A measuring tool having a plurality of templates, each template having a socket opening therein. The size of the socket openings in each template are different from each other. The templates are mounted together with each template having a head portion, a shank portion and a rear-end. The templates are pivotally mounted together adjacent their rear-ends so that the templates are moveable from a folded compact position to an open position. The head portions are wider than the shank portions and are thin and light-weight. Openings are provided in the rear ends so that the templates may be pivotally mounted together at the rear-ends. The templates are of different sizes with the larger nut socket located in the longer template.

Abstract: A tapped hole measuring apparatus available for automatically measuring the major diameter, minor diameter, effective diameter and depth of a tapped hole. The apparatus comprises a measuring stylus with at least two air discharging ports which can take inserting movement into the tapped hole. The apparatus separately measures the variations of the back pressures of air supplied to the air discharging ports, and converts the back pressure variations into electric signals and stores them. Also included in the apparatus is a configuration calculating section for comparing the variation of the electric signal from the tapped hole with a variation of electric signal from a reference tapped hole to obtain the configurational dimensions of the tapped hole being measured.

Abstract: An opto-electronic, threaded parts inspection device. The device includes a source for generating a thin, planar beam of collimated light which is disposed on one side of a parts carrier. The laser light beam is rotatable about two axes, normal to one another and both normal to the longitudinal axis of parts passing through the beam. A sensor unit is disposed on the other side of the parts carrier so that the light beam falls thereupon. The threaded parts inspection device can be adjusted to pass light over different features of the threaded parts as they are moved past the inspection device by the parts carrier. By measuring how much of the light is interrupted by the profile of the passing threaded parts, it is possible to detect deviations in the pitch angle and major and minor diameters of the threaded workpieces.

Abstract: A device to measure round objects, especially threaded objects is shown where three cam surfaces located on the interior of an annular ring are contacted by rollers which are advanced or retracted as a cam surface is traversed. The traverse of the cam surface allows change in diameter formed by the rollers and by locking the cam position, a fixed gauge is formed. The rollers directly contact the part to be measured. As applied to thread measurement, the three point gauge uses annular rollers to measure properties of thread fit and use when the rollers have the threads slightly offset from each other to make a pitch test set. The device allows a single gauge to handle at least 12 normal go and no-go gauging functions with just change of rollers for various fit and pitch classes. The gauge also is settable at special sizes near a standard size due to a range of adjustment.

Abstract: The invention is of a thread indication kit for use in determining the specification diameter and thread density of a threaded in-take orifice of a spin-on filter, such as the traditional oil filter used in motor vehicles. The kit includes a groups of sizing tabs, each of which includes a sizing lobe. The sizing lobe is a blade-like member with parallel and spaced edges separated by a distance which corresponds to the thread crest-to-thread crest distance of diametrically opposed points within an in-take orifice of an oil filter. Displayed on each sizing tab is indicia which indicates the specification diameter of the intake orifice which exhibits the thread crest-to-thread crest distance corresponding to the lobe dimension of the sizing tab. Applicant's kit also includes a thread gauge which is used to determine the thread density of threaded orifices.

Abstract: A device for holding wires for measuring screw threads by the three wire method with a micrometer includes a body portion and a plurality of wire holder ears in a vertical position, the wire holding ears being responsive to rotational movement and the wire holder ears being limited in the rotational movement by weighted lower base portions provided on the bottom of the wire holder ears. The wire holders are further limiting in movement by a movement limiting attachment engageable with an anvil of the micrometer, such as in a collar or U-shaped track have a defined recess for limiting the movement of the wire holders within the confines of the recess. To further stabilize the rotating spindle of the micrometer within a bore of the wire holders, the wire holders are further provided with C-shaped spring clamp engageable within a further bore encircling the bore through which the spindle extends.

Abstract: A thread pitch cylinder gage for an internally threaded bore in a workpiece, according to one embodiment, includes a gage post having a bearing surface extending through an externally threaded sleeve. The sleeve is trapped on the bearing surface by a retaining cap at the end of the gage post. A finger on the bearing surface engages a notch in the sleeve to prevent rotation of the sleeve relative to the bearing surface, while permitting relative axial motion. The sleeve includes two collections of retaining cavities with balls trapped therein, one at each end of the sleeve. The cavities, and therefore the balls, are centered between the flanks of a thread on the sleeve, and the balls are radially slidable between a retracted and a locked position. The bearing surface includes a plurality of sloped cam surfaces radially aligned with the balls in the sleeve.

Abstract: An apparatus for holding wires for measuring screw threads by the three wire method includes a body portion and a plurality of wire holder ears in a vertical position, the wire holding ears being responsive to rotational movement and the wire holder ears being limited in the rotational movement by weighted lower base portions provided on the bottom of the wire holder ears. A ledge is provided for holding the screw in position perpendicular to the orientation of the three wires in a position for the pitch diameter of the screw threads to be measured.

Abstract: The thread gauge permits the user to determine the pitch diameter of tapered threads at the intersection of the pitch cone and the end face of the object being measured. A pair of opposed anvils having lines of threads which match the configuration and taper of the threads on the part being measured are brought into meshing engagement with the threads on opposite sides of the part. The anvils are located linearly into their proper positions by stop fingers on the anvils that are brought into abutting engagement with the end face of the part. This places predetermined reference points of the pitch cone of the thread anvils in registration with corresponding points on the end face of the part being measured, resulting in an accurate determination of the pitch diameter at that location. The thread anvils can be arranged for measuring either internal or external threads.

Abstract: In a preferred embodiment, a tool for measuring the shape of the groove of a thread, the tool measuring the plus or minus radial positions of pairs of points including the pitch diameter point on one flank to the addendum or the dedendum of the other flank. Comparison of these measurements with the pitch diameter as a base line gives a profile of the shapes of the flank.

Abstract: In measuring the accuracy of a thread groove of a ball thread formed in a nut by using an electric micrometer, a displacement of one point on each of a pair of flanks of the thread groove is measured along a longitudinal direction of the thread groove, and a pair of measured data sequences are obtained respectively for the pair of flanks. The data elements of the pair of measured data sequences are grouped into a plurality of groups so that each group includes a pair of data elements which are respectively contained in the pair of measured data sequences and which are corresponding to each other. The accuracy in the depth direction of the thread groove with respect to a reference thread groove is obtained on the basis of a sum of the data elements in each group, and the accuracy in the thread axis direction is obtained on the basis of a difference between the data elements in each pair.

Abstract: A screw thread measuring device capable of measuring the physical parameters of internally or externally threaded parts comprising a base and slidable platform. Measuring segments are mounted to the base and platform, respectively. Gage mounts to the base and contacts the platform with plunger. To measure an externally threaded part, the externally threaded part is placed between base mounted measuring segments and platform mounted segment. The measuring segments are biased together. Plunger of the gage correspondingly moves with the platform to measure the displacement of the platform with respect to the base. The distance the platform moves is read out on the dial of gage. To measure an internally threaded part, the measuring segments are replaced with measuring segments designed for internally threaded parts. The threaded parts are inserted into the internally threaded part and the platform is biased away from base mounted segment.

Abstract: A gauge which is constructed to measure a thread of varying pitch, and which includes a threaded gauge element adapted to be screwed into engagement with the thread of varying pitch and to a point at which the threads have a light binding relationship resisting further advancement of the threads together, in combination with a dial indicator adapted to indicate the position at which the binding of the threads occurs as a measurement of the thread of varying pitch. The device may include a second element which is shiftable axially relative to the threaded gauge element to a position limited by engagement with the part containing the thread of varying pitch, with the dial indicator being responsive to and adapted to indicate the relative positioning of the two elements.

Abstract: An improved indicating thread gage for gaging the functional fit and individual thread parameters of threaded products, especially taper threaded products. Thread form elements engage the threaded product and are capable of longitudinally traversing the threaded product while an indicator transduces radial displacement of the thread form element.

Abstract: I have invented a new and novel "holder" to hold individual threadwire gauges used to measure the thread pitch of screws and bolts. The holder takes full advantage of the properties of new materials used in the holder, including magnets, rubber and synthetic plastics. The holder will accomodate and hold in place without the use of hands on the threadwires, the wire-sets used to measure the thread pitch using the three wire method and a micrometer.

Abstract: A method for gaging the geometry of selected sections of threaded fasteners comprises providing a gage for measuring a plurality of cross-sectional dimensions of the selected sections, positioning a fastener with the selected sections in surface-to-surface contact with the gage, recording information corresponding to the dimensions of the selected sections as measured by the gage to form recorded data, and ascertaining information representative of the geometry of the selected section from the recorded data.

Abstract: A method for gaging the geometry of bodies includes providing a gage for measuring a plurality of cross-sectional dimensions of a body and positioning a body in surface-to-surface contact with the gage. The method proceeds by recording information corresponding to the dimensions as measured by the gage, to form recorded data, the ascertaining information related to the geometry of the body from this recorded data. Apparatus is also provided for carrying out this method.

Abstract: A method of thread timing for a rotary shouldered connection is presented. A ring gage which has a first and second scribe line thereon is used to establish a male timed rotary connection of a first tool. The angular distance between the first and second scribe lines is the advance timing correction (ATC), i.e., the angular distance between hand tight face-up and full torque make-up of a rotary connection comprising the male timed rotary connection of the first tool and a female timed rotary connection of a second tool. The second scribe line (indicative of the ATC) is transferred onto the first tool. A pin gage which has a third scribe line thereon is used to establish the female connection of the second tool. The third scribe line on the pin gage corresponds to the first scribe line on the ring gage. The third scribe line is transferred onto the second tool. When the first and second tools are rotatively connected at full torque, the transferred lines on the tools are in general angular alignment.

Abstract: A device for identifying the size of bolts and nuts is provided and consists of a plate. A first mechanism on the plate, is for measuring different sized threaded shanks of unidentified loose bolts. A second mechanism on the plate, is for measuring different sized unidentified loose nuts. A third mechanism removable from the plate, is for measuring different sized unidentified threaded studs mounted on massive objects. A fourth mechanism removable from the plate, is for measuring different sized unidentified threaded apertures in massive objects. Indicia is disposed on the plate for indicating the sizes of the bolts and nuts.

Abstract: An apparatus and method empolying a notched precision caliper in conjunction with a transfer tool such as a conventional dial gauge caliper having ball-point type contact surfaces to provide a direct quantitative indication of a threaded member's pitch diameter deviation from the nominal pitch diameter value by a deflection of the dial gauge.

Abstract: An internal thread gage has two gage fingers mounted perpendicular to a frame axis. Each gage finger has a semi-cylindrical surface cut with helical threads. The gage fingers will move together and expand apart to allow an internally threaded fastener to be inserted over them for measurement. One of the gage fingers will move perpendicular to the frame axis to assure that the threads on the gage fingers properly mesh with the internal threads of the fastener. The gage fingers have threads for forming functional diameter measurement, as well as a cone and vee for making pitch diameter measurement.

Abstract: A method and device for measuring screw threads on tubes connecting sleeves or the like, by means of a measuring pin which is moved to measured surfaces in two mutually independent measuring directions offset by 90.degree. from each other. The two measuring directions are associated with a force direction effective as a resultant. The measuring pin further has an advance deflection in each of the two measuring directions which are annulled at the point contact of the measuring pin with the measured surfaces.

Abstract: A gage including two relatively movable structures which carry two gaging elements for contacting a screw thread or other work surface at different locations and which control an indicator producing a display representing a measurement of the thread or other surface. The two structures are mounted for relative movement by a guide rod attached to one of those structures and slidably movable longitudinally within a bushing attached to the other structure, with a spring applying force in opposite directions to the first of these structures and the bushing respectively to urge the gaging elements against the surface being measured. The bushing is shiftable to different positions relative to the structure to which it is attached, to vary the spring force for use with different size parts or under other varying operating conditions.

Abstract: A thread gaging device has three thread gage rollers mounted 120 degrees apart from each other. Two horizontal arms extend outward from the base. One of the rollers mounts to one arm and the other two rollers mount to the other arm. The two rollers on the one arm can slide horizontally relative to each other to select the positions. Also, the two rollers can be repositioned vertically relative to the other roller to a selected position. The front of the rollers is pivotal relative to the base. An indicator will measure the amount of pivotal movement to gage a threaded fastener inserted between the rollers.

Abstract: A gauge to evaluate the flatness, planar disposition, and location of the sealing surface of a rotary shouldered threaded connection, the gauge being adjustable and convertible to gauge either pin or box ends of different size connections, with multiple contact shoes engaging the connection threads to hold the gauge fixed relative to the thread pitch diameter and a device to measure distances from the pitch diameter to the shoulder face. In the method, the gauge is moved around the connection to obtain measurements from different circumferential locations to evaluate shoulder flatness and axial location and to examine the angular disposition of the plane of the shoulder face relative to the thread axis.

Abstract: A thread pitch cylinder gage for an internally threaded bore in a workpiece, according to one embodiment, includes a gage post having a bearing surface extending through an externally threaded sleeve. The sleeve is trapped on the bearing surface by a retaining cap at the end of the gage post. A finger on the bearing surface engages a notch in the sleeve to prevent rotation of the sleeve relative to the bearing surface, while permitting relative axial motion. The sleeve includes two collections of retaining cavities with balls trapped therein, one at each end of the sleeve. The cavities, and therefore the balls, are centered between the flanks of a thread on the sleeve, and the balls are radially slidable between a retracted and a locked position. The bearing surface includes a plurality of sloped cam surfaces radially aligned with the balls in the sleeve.

Abstract: A device is shown for measuring the minor diameter of a screw thread. The device includes a frame and an adjustable indicator blade which moves in a vertical plane for engaging a thread root of a screw arranged on the frame transverse to the adjustable blade. A pair of laterally moveable blades are mounted on the frame oppositely to the adjustable blade for holding a screw therebetween. Each of the laterally moveable blades has a blade point which engages a thread root of the screw at spaced locations along the longitudinal axis of the screw. An indicator is provided for determining the relative distance between the adjustable blade and the blade points of the laterally moveable blades when a screw is held therebetween.

Abstract: A pitch diameter gauge is disclosed which includes a gauge body and a first arm attached to the body and extending perpendicular outward therefrom. A second arm is attached to the body and extends perpendicular outward therefrom along the same side as the first arm and the second arm is spaced from and substantially parallel to the first arm. One of the arms is adjustable along the body and is lockable to the body in a desired location. A single ball contact is connected to one of the arms in a manner which permits movement thereof with respect to the other of the arms along a line perpendicular to both arms. The gauge also includes a base pivotally mounted near an end of the other of the arms and has a pair of spaced ball contacts mounted thereto along the surface opposite the associated arm. The single ball contact and pair of ball contacts are oriented either both toward or both away from each other.

Abstract: An angle gage with which the accuracy of a specified angle can be checked in a variety of orientations or forms. The nine-sided flat and rigid template not only enables the interior as well as the exterior forms of a particular angle to be gauged, but the same gage can be used to check the corresponding chamfer angle, the angle's supplement and the half-angle. The compact size and advantageous placement of the various corners and edges provides an extremely versatile, inexpensive and easy-to-use checking tool. A set of such gages corresponding to an incremented range of angles enables angle measurement of most contours to be made.

Abstract: The present invention is directed to an improved, multi purpose measuring device for determining various parameters of an externally threaded member. In particular, the invention includes a substantially ring shaped housing slidably supporting at least one pair of gage plugs having measuring assemblies mounted thereon. As the gage plugs are selectively moved through the housing to bring the measuring assemblies into contact with an externally threaded member for determining various parameters such as the actual and functional pitch diameters, the minor diameter and the concentricity of the threaded member.

Abstract: A gauge and gauging method for measuring a thread of varying pitch by screwing a threaded gauge element into engagement with the thread of varying pitch and to a point at which the threads have a light binding relationship resisting further advancement of the threads together. The device is constructed to then indicate the extent to which the gauge element has advanced when the binding condition is attained, and utilize that reading as a measurement of the functional accuracy of the thread of varying pitch. The device preferably includes a second element which, when the threads are in their lightly binding condition, is adjustable axially relative to the threaded gauge element and to a position of contact with the part containing the thread of varying pitch. Markings indicating the relative positioning of the two elements then provide a precise measurement of the functional accuracy of the thread of varying pitch.

Abstract: When using a thread measuring tool with a "go" plug gauge (1) and a "no go" plug gauge (4) and scale (13) indicating the thread depth, the gauge is worn or damaged so that the tool must be discarded.By providing the tool with interchangeable gauges (1, 4), as referred to in the application, it is possible to replace the worn or damaged gauge in that the gauge is placed on a shank (2, 5) which can be inserted into a tapered bore (3, 6) in a rod (7). The rod extends inside the housing (16) of the tool. When for instance a plug gauge (1) is worn down, it is extracted from the rod (7) and a new one is inserted.In order to be able to adjust the tool, the rod (7) is provided with an external thread (17) so that it can be screwed in and out of the housing (16) and thus be adjusted so that the end of the plug gauge holder (12) will just flush with the end of the plug gauge (1).

Abstract: A gauge for measuring an internal thread formed within a passage in a nut or other member, and including two gauge elements having similar external threads adapted to project into the threaded passage along the axis of the internal thread and from opposite ends of the passage to engage opposite ends of the internal thread, and two indicators carried by the gauge elements at locations axially outwardly beyond the opposite ends of the passage and having portions extending externally of the passage to positions at which the rotary setting of one indicator can be read against the rotary setting of the other. At least one of the rotary elements (preferably both) is rotatably adjustable relative to the corresponding gauge element, and releasably lockable in any of different set positions relative thereto as an initial setting of the tool.

Abstract: An improved measuring device for determining both major and pitch diameters of screw threads, gears, splines and the like, wherein attractable magnetic members attached to a movable spindle and fixed anvil serve to attract and retain gauging wires in their proper positions. An adjustable screw and spring assembly biases the spindle toward the anvil with a predetermined and readily adjustable pressure.

Abstract: An apparatus tests rack teeth of a rack member for a rack and pinion vehicle steering gear. The apparatus comprises a support for mounting the rack member for longitudinal displacement and a helically toothed test pinion member having an axis. A carriage mounts the test pinion member for rotation about its axis and in driving engagement with the rack member. A resilient biasing spring urges the test pinion member into engagement with the rack member and provides a predetermined lateral spacing between the longitudinal axis of the rack member and the axis of the test pinion member. A screw adjusts the biasing force of the resilient biasing spring at the predetermined lateral spacing. A drive effects displacement of one of the rack and test pinion members to impart displacement to the other of the rack and test pinion members.

Abstract: An instrument for sensing the profile of an elongate tooth of a corrugation roll or gear wheel or the like. A carriage supports an axially movable stem which is operably connected to an indicator element. The stem has an engagement portion which engages a tooth of a corrugation roll as the carriage is moved along the roll. The carriage is provided with runners or slide elements which travel within troughs or valleys, which separate the teeth of the corrugation roll. Preferably, a magnet member is attached to the carriage and is positioned adjacent the surface of the corrugation roll and maintains the position of the carriage with respect to the roll as the carriage is moved along the roll.

Abstract: Movable jaw measuring apparatus usable for measuring widths across the flats of bolts includes a fixed jaw and a movable jaw, and reference marks for indicating the measurements may be in both inch and metric units. The movable jaws can also be used to measure the diameter of the bolts. Apparatus includes linear measurement indicia for measuring the length of various elements, also in both inch and metric units, if desired. Peripheral surfaces may include serrations for measuring the pitch of threads, or thread measuring indicia may be printed on surfaces.

Abstract: An improved thread measuring tool. The tool translates linear motion into rotational motion to provide the motive power for turning a thread gauge into a threaded bore in a workpiece.

Abstract: A thread gage for use with a threading machine for automatically and quickly gaging a thread after it is formed. A stylus support is mounted on the machine turret for placement of the stylus in position for movement axially of the thread to follow the thread contour. The stylus is connected to a transducer. The machine computer control may be programmed to receive signals from the transducer indicative of radial position of the stylus tip and signals relative to axial position of the turret indicative of axial position of the stylus tip to form a digital model of the thread which may then be compared to a standard thread and/or used to make adaptive threading machine offsets.

Abstract: An instrument for sensing the profile of an elongate tooth of a corrugation roll or gear wheel or the like. A carriage supports an axially movable stem which is operably connected to an indicator element. The stem has an engagement portion which engages a tooth of a corrugation roll as the carriage is moved along the roll. The carriage is provided with runners or slide elements which travel within troughs or valleys, which separate the teeth of the corrugation roll. Preferably, a magnet member is attached to the carriage and is positioned adjacent the surface of the corrugation roll and maintains the position of the carriage with respect to the roll as the carriage is moved along the roll.

Abstract: An improved thread measuring tool. The tool translates linear motion into rotational motion to provide the motive power for turning a thread gauge into a threaded bore in a workpiece.

Abstract: In order to determine the size and style of a hose fitting, and the size of a hose which may be assembled thereto, a simple, easy-to-use device is provided. The device has a body, one end of which permits identification of various types of tapered, threaded fittings, the other end of which may be used to measure various dimensional features of a fitting or hose. By using viewing means on the device, measuring indicia on the device may be quickly read.

Abstract: A tool for the measurement and inspection of tolerances in pipe threads on pipes and couplings, etc. formed as a pair of pivoting jaws having handles. One of the jaws includes an assembly of probes mounted for longitudinal displacement in a direction normal to the longitudinal axis of the pipe or coupling, the probes also being slideably supported within the assembly for transverse displacement in a direction parallel to the longitudinal axis of the pipe. Transducers are provided for measurement of the motion of the probe. The second jaw coacts with the first jaw for clamping action, the probes are displaced transversely so as to set into troughs of the threads whereby the probes are aligned for measurement of thread length. The taper is measured by means of an inclinometer disposed at the end of the assembly away from the probes. Normal displacement measures thread height as well as deviation in diameter, the latter providing a measure of the non-linearity of the thread pitch line.

Abstract: The present invention concerns a new threaded joint for steel tubes, usable in particular in the petroleum industry, which contains a female element equipped with conical threads having an internal screw stop mating and a male element correspondingly threaded with a screw stop having a form corresponding to the female element. The male element stop and the female element stop are each manufactured by cold working using a tool capable of engaging in or on the threads of the corresponding element.

Abstract: A pin thread profile mold includes two parallel spaced apart plate type thread profile gages. A cast is made with the mold positioned adjacent the thread with the plates parallel to the thread axis and the plane midway therebetween radial to the thread axis, the mold-thread interface being caulked with clay. After being placed adjacent the thread the mold is packed with self hardening plastics material in the plastic state, such as dental plaster. After the plastics material has hardened the cast is removed from the thread and sent to a laboratory for comparison with a desired profile.

Abstract: A caliper for measuring the diameter of a member having internal or external screw threads including a combination structure attached at each end thereof which includes a holder to which is removeably attached a thread profile planar member.

Abstract: In order to check threads for accuracy, a single wire is placed in the notch formed by the thread flanks. The wire is sized to extend above the top of the thread crown or ridge. A micrometer is used to measure the distance between the exposed top of the wire on one side of the thread and the thread crown on the other side. This technique is an improvement over the conventional three wire system since far less manual dexterity is required.

Abstract: A workpiece gaging system includes carriage structure for a gaging part, movable longitudinally and laterally, and a rotor to rotate that structure; also indicator means is operatively connected with the part to indicate the status of engagement, displacement, or need for displacement, of the gaging part relative to a surface or surfaces (such as pipe threads) to be gaged, as at multiple locations. Measurement encoding and signal processing means are also provided.

Abstract: A thread guage for indirectly determining the pitch diameter and taper of threads on casing and tubing is disclosed. In the preferred and illustrated embodiment, the thread guage includes a pair of adjustable thread engaging arm assemblies mounted on a bar member. The arm assemblies are selectively locked along the bar member, the distance between the arm assemblies being a fixed position corresponding to a specified thread size. At least two indicators are mounted on one of the arm assemblies providing a value of the measured thread dimensions relative to a standard, which value is used to determine pitch diameter and taper of the thread.