Abstract: A support system is disclosed for restraining large masses at very low or cryogenic temperatures. The support system employs a tie bar that is pivotally connected at opposite ends to an anchoring support member and a sliding support member. The tie bar extends substantially parallel to the longitudinal axis of the cold mass assembly, and comprises a rod that lengthens when cooled and a pair of end attachments that contract when cooled. The rod and end attachments are sized so that when the tie bar is cooled to cryogenic temperature, the net change in tie bar length is approximately zero. Longitudinal force directed against the cold mass assembly is distributed by the tie bar between the anchoring support member and the sliding support member.

Abstract: This bracelet comprises a succession of elements linked together by means of hinges, each element including a median knuckle on one side and two end knuckles on the opposite side between which the median knuckle of the neighbouring element fits. Both median and end knuckles are integrally formed with the element to which they belong. Each is sheathed with a jacket for decorative purposes.

Abstract: A pierced-ear earring which comprises a post threaded at both ends to be inserted into the ear lobe of the wearer by a conventional ear piercing device, a front cap which is threaded to one end of the post prior to firing the post through the ear lobe, and a rear cap which is threaded to the other end of the post after it has been inserted through the ear lobe. In use, the front cap is removed from the post and replaced by decorative earring elements of different shapes and colors. The earring elements are removed and the front cap is again screwed onto the post.

Abstract: In a one-piece fastener, particularly for jewelry, which consists of two fastening members which are mounted at their one end for pivoting in a common axis of rotation and can be detachably connected at their other ends, one fastening member is constructed in the form of an inherently resilient double hook (2) with hook openings (8, 10) directed oppositely at each side of the tension axis (24) and the other fastening member is constructed in the form of a hinged locking means (1), the double hook being articulated on the hinged locking means (1) by one hook end being able to be frictionally secured in position on the hinged locking means (1) by its other end, through a detent (5) and a counter detent (7). Double hook (2) and hinged locking means (1) are pivotable through 360 degrees, crossing over and passing the detent, for the opening and closing of the fastener and are so constructed that a pivotal movement in one direction opens one hook opening (9) and closes the other (10) and vice versa.

Abstract: A linkable gem setting includes a base element, a plurality of upstanding fingers on the base element, and an apertured tab which extends outwardly from the base element for interlinking the setting with another setting of the similar configuration. In one embodiment of the gem setting, the apertured tab of a first setting is receivable on one of the fingers of a second setting of similar configuration for linking the two settings together so that when a gem is assembled in the fingers of the second setting, the gem retains the two settings in linked relation. In another embodiment of the setting, a connector arm is provided on the base element so that the apertured tab of a first setting is receivable in interlinked engagement with the connector arm of a second setting to secure the two settings together.

Abstract: A knitted covering for a core, e.g. of hose or electrical cable or the like, is constituted as a circular warp knit in which each of a single system of warp yarns jumps over at least one and less than all of the wales of the system in passing from course to course. A method of making the knitted core covering is also described.

Abstract: Disclosed is a latch needle for knitting machine to be readily assembled from a latch having a pair of transversely protruded pivots and plastically formed from a synthetic resin, as well as an extended needle body consisting of a shank portion. A hook portion is formed at one end thereof and a butt portion at the other end, in which said shank portion has a slot defined by opposite side walls, each having a hole for engagement with each of said pivots. A pair of slanted bottom walls receive said latch for angular movement, which is also plastically formed from the synthetic resin. Owing to slanted face formed on said pivots or said side walls, the latch may be pushed or stricken down in the slot with resiliently spreading the side walls.

Abstract: Garments contaminated with radioactive, toxin, biological and/or chemical contaminants are deposited in a cleaning drum and the drum is agitated during a wash cycle. A dry cleaning solvent is added to the drum during the initial wash cycle and then drained to a distillation means. Within the distillation means, there is a neutralizing agent which deactivates the biological and toxin contaminants and chemically breaks down the chemical contaminants removed with the dry cleaning solvent from the cleaning drum. Dry cleaning solvent is then continuously added to the drum during the secondary wash cycle and continuously removed from the drum. After the dry cleaning solvent is removed from the drum, and before it is pumped back to the drum, the dry cleaning solvent is filtered to remove remaining trace particulate contaminants. The dry cleaning solvent is also passed through an adsorber where remaining trace chemical contaminants dissolves in the dry cleaning solvent are removed.

Abstract: Automobile child prevention locks are provided to prevent children from operating the door actuating lever and the window operating lever from the interior of the vehicle. The door actuating handle lock consists of two flat plates hinged together. A lock mechanism allows the plates to be locked together in parallel overlying relation. When placed over a conventional U-shaped door actuating lever, an elongated finger on one of the plates prevents the door lever from being moved. A window operating lever lock has a hollow barrel which is mounted in the door panel. A cylindrical locking member, which has an L-shaped overhanging arm for engagement with the window operating lever, is lockably received within the hollow barrel. By use of these hooks, both the doors and windows of an automobile may be secured from opening by children within the vehicle.

Abstract: A security shield for protection of a padlock of a type which has a body and shackle. The shackle is of generally U-shaped configuration and has a free leg and a pivoting captive leg interconnected by an outer end. The security shield comprises a housing and a saddle positioned therein. The housing has a front and rear wall interconnected by a pair of side walls. A top wall interconnects the ends of the front, rear and side walls to define an open ended box. The front wall has a locking port formed therein for enabling a hasp to pass therethrough and an exit slot formed in the top wall for enabling a shackle outer end to pass therethrough. The saddle is secured to the interior of the housing and comprises a lower horizontal base and a upper horizontal base interconnected by a vertical arm. The bases each have apertures therein for enabling the shackle free leg to pass therethrough.

Abstract: A security cover for valves used to control flow of liquids from storage vessels wherein a part of the cover interlocks with the valve stem and/or a connected valve actuating handle to prevent unauthorized use of the valve. The security cover further includes a secondary lock enclosure means, attached to the top of the cover means, which receives the lock lip means and padlock.

Abstract: A vehicle repair system for locating and defining predetermined points of vehicle components to ensure compliance with the vehicle specifications. The system utilizes a common base for interchangeably receiving any one of a plurality of control heads in order to enable the base portion of the system to be utilized in checking and verifying the position of vehicle components for any or a large number of vehicles. Each of the interchangeable control heads is specifically configured for use with a particular vehicle and for locating a component of that particular vehicle so that each of the specific control heads can be utilized in a standard system base eliminating the necessity of individual bases being formed as an integral portion of the position locating or verifying apparatus. In addition, the checking and verification system may be utilized to effect localized repairs or reforming of the automotive components to effect their correct positioning.

Abstract: A tube expander capable of simultaneously applying a plurality of selected radial pressures outwardly at a plurality of sections of a tube interior to provide selected expansions of the sections of the tube.

Abstract: A system and apparatus for roll forming to neck-in D&I can ends and replace double necks and triple necks is disclosed. An externally disposed free roll having independently rotatable sections is moved inward and axially against the outside wall of the open end of a rotating trimmed can to form a conical neck at the open end of the cap, the two sections of the roller having different speeds depending upon neck diameters respectively engaged thereby. A spring loaded interior support roller moves under the forming force of the free roll. This is a single operation where the can rotates and the free roll rotates such that a smooth conical necked end and flange are produced.

Abstract: A spiral wound gasket is made by progressively winding strip material between co-operating rollers to form a gasket section, the method of manufacture including the step of separating the rollers at a predetermined rate to give a predetermined rate of growth for the gasket section formed between them.

Abstract: An apparatus for creating a florentine finish on a gold strip comprising a table-like support including spaced-apart driven friction wheels which move the gold strip across the upper surface of the support beneath a rotating and oscillating cutter wheel which grinds or cuts the upper surface of the gold strip as it passes therebeneath.

Abstract: A process and apparatus for producing increased reductions in strip material, particularly soft metal strip materials, are disclosed. The process and apparatus utilize a rolling mill having at least two offset work rolls driven at a peripheral speed ratio less than a desired gage reduction ratio but greater than zero and a mechanism for applying forward tension to the strip material. The desired gage reduction may be obtained using reduced separating force magnitudes and minimized tension force magnitudes. The rolling mill utilizes relatively small diameter work rolls without having to provide additional support structures other than the back-up rolls and frame roll supports to prevent roll bending in the rolling direction. Roll flattening is substantially eliminated resulting in improved gage control and strip flatness.

Abstract: The rolling mill has two working rolls and at least two supporting rolls. At least both rolls of one roll pair are axially slidable opposing each other and each of the oppositely slidable rolls has a curved contour extending over its entire length which is convex over one longitudinal half segment and concave over the other longitudinal half segment. The contours of both rolls of these roll pairs complement each other continuously in one definite axial position. So that the occurence of increased load points and moreover as a result increased pressure at the contacting positions of the working rolls and the supporting rolls is prevented, the curved contour of the roll body at the free end of the concave longitudinal segment of the roll body extends to the body edges in an at least partially cylindrical longitudinal segment.

Abstract: Actuator device for axially shifting rolls which can be powered rolls journaled by way of radial bearings in holding elements in a rolling mill frame, uses hydraulic cylinders. At the drive side, the journal portions of the working rolls are respectively stepped to provide a centering roll portion, onto which respectively, an axial bearing is mounted to be positively held in position. At the housing of this bearing is attached a hydraulic cylinder which carries out the adjustment/control operation. The respective locking after mounting a new roll, for example, is achieved by a spindle head which is slipped on and which transmits the motive power of a driving spindle by way of the locking function performed by this spindle.

Abstract: An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc are located into the axial throughbore of the container so that the billet is sandwiched between the die and pressure disc, with the pressure disc having a maximum outer diameter between opposite radial faces which is slightly less than the diameter of the axial throughbore to define a diametrical clearance between the pressure disc and the press container. A bolster is located adjacent the pressure disc and is axially fixed to substantially prevent axial movement of the pressure disc in a direction toward the bolster during extrusion. The bolster exerts a relatively insigificant axial force against the container.

Abstract: A novel method and apparatus for forming stabilizer bars for engine driven land vehicles starting from tubular or rod steel stock material to provide predetermined shapes which are hardened by heat treating, forming and quenching into permanent forms. The method comprises of heating bar ends end forging in forging presses so that one the eyed ends after heating to 1150.degree.-1240.degree. C. for forging and piercing is formed. The same series of heating, forging and piercing steps are carried out at the other end to thereby provide a new strengthened eyehole structure at each end. The bar is then heated and formed on a forming table. The heating is carried out at 870.degree.-910.degree. C. and the bending on the forming table is carried out. A drain aperture is pierced in the side of the tubular stock to drain the quenching oil which enters the tube during quenching after forming the stabilizer bar. The novel forming board is provided with twelve cylinders.

Abstract: This disclosure relates to a machine for attaching a fitting to a length of hose by crimping. The machine comprises a base plate and a die set which is positioned on and supported by the base plate. A power unit is mounted above the base plate and the die set, the unit including a movable ram and a ram extension which is pivotably connected to the ram. A die bowl is positioned over the die set, and the power unit is operable to drive the ram extension against the die bowl, this action crimping a fitting positioned in the die set. The ram extension is attached to the ram for pivotal movement on an axis that is perpendicular to the ram movement, so that the extension is movable up and away from the die set. The die set includes a die plate and die segments on the plate, and the die bowl is positioned around the segments. The die bowl is separable from the die set, and a spacer ring is attachable to the bowl to achieve different crimp diameters for a given die set.

Abstract: An optical device and method for strain detection. The device is provided with at least one optical fiber arranged so as to form a network. A light emitting device is arranged at one end of the fiber and a receiver is arranged at the other end, enabling the generation of information relative to the light intensity transmitted by the fiber or fibers in the presence of strain, and a measurement corresponding to the strain.

Abstract: A method and apparatus are disclosed for detecting leaks in a liquid-containing tank. The method and apparatus employ an internal reference cell immersed in the liquid in the tank which contains a volume of the liquid isolated from flow communication with the liquid in the tank while having a surface which is exposed to the ambient conditions above the surface of the liquid in the tank. The level of the fluid in the tank and in the reference cell are monitored over a period of time. Level changes in the tank which do not correspond to level changes due to the temperature and evaporative effects observed in the reference cell are indicative of a leak in the tank.

Abstract: A method and apparatus are provided for measuring the load bearing capacity of a surface by continuously transporting a known load along the surface and measuring the resulting deformation thereof. In one embodiment a contactless laser transducer is mounted directly in front of and behind a loaded wheel for measuring the elevation of the surface before and after the load. A computer determines the difference between the measured elevations which is indicative of the load bearing capacity of the surface. Conventional recording, display, and storage equipment are provided for recording, displaying, and storing the elevation values and the corresponding differences. The load velocity and longitudinal position may also be determined and stored with the corresponding elevation and difference values.

Abstract: A combustion pressure detecting apparatus for generating an electrical signal in response to a combustion pressure of an internal combustion engine, wherein an electrical signal based on said combustion pressure is detected at a predetermined angle of rotation of said engine, the detected value being compared with a predetermined reference value to derive a difference therebetween, including correcting means for executing correcting operations in dependence on said difference.

Abstract: The invention concerns a system to detect irregularities in the geometry of railway wheels. The system is characterized in that a linearly expanding accelerometer is solidly joined to the rail underneath its head. The accelerometer sensitivity is constant over its entire length and generates a voltage proportional to the acceleration of the rail. For different damages, the rail acceleration takes place in different directions, whereby the voltage amplitude, depending on the type of damage, evinces opposite polarities. Frequency filtering or frequency analysis permit the determination of further criteria which, together with other weighted criteria, are used to characterize wheel damage.

Abstract: In a hydropneumatic accumulator, the gas volume contained therein is monitored by measuring the volume increase in the hydraulic fluid, which takes place during a pressure increase at a given minimum pressure. Moreover, for monitoring purposes, the hydraulic pressure is measured and a signal transmitted at insufficient gas volume as a function of the volume increase and the pressure increase. In order to obtain reliable signals concerning the filling state of the accumulator at all ambient operating temperatures, the temperature of the environment and the gas volume is detected, a standard value for the volume increase proportional to the ratio of the gas temperature to the minimum pressure determined and the volume increase causing the pressure increase compared to this standard value.

Abstract: Subterranean fault-related facture systems are located and identified and the direction of action of paleostresses causing the fault-related fracture system can be determined from a record representative of depth, dip angle, and dip direction of subterranean generally planar formation features intersecting a borehole and from information relating to borehole diameter, dip angle, and dip direction.

Abstract: A method of measuring the orientation of the constituents of specimens is disclosed, which includes the steps of preparing a cavity resonator in the form of a pair of waveguides forming a cavity, said waveguides being formed with a slit, inserting a specimen sheet or web in said slit, oscillating said cavity resonator by microwaves of fixed frequency while producing a relative rotation between said inserted specimen sheet or web and the plane of microwaves of the cavity resonator, measuring the amount of attenuation of the output signal or transmitted microwave intensity from said cavity resonator with respect to said exciting input signal, and measuring the orientation from the relation between said amount of attenuation or transmitted microwave intensity and the angle of said specimen sheet with respect to the cavity resonator, said method being characterized in that the oscillation frequency of said microwaves is set shifted slightly toward the higher side from the resonance frequency of the cavity resonat

Abstract: A method and apparatus for the protection of a hydraulic machine. The difference in temperature across the fluid inlet and the fluid outlet being taken and used to actuate means effectively to signify when the machine is operating outside of its required performance. In a preferred embodiment the temperature difference .DELTA.T is evaluated from the equation ##EQU1## where the efficiency .eta.p, the head H in meters and the temperature t.sub.2 of the fluid are all known.

Abstract: A solid state temperature and/or anemometer measuring instrument for a fluid medium such as atmosphere the instrument including a pair of semi conductor junction means such as a zener diode one of which is exposed to fluid flow the other being isolated therefrom and providing outputs which are a function of the temperature of the fluid and a measuring device for measuring the respective outputs the differential being an indication of temperature or fluid speed. Such a device has specific application in an optical air pollution monitor to give a continuous indication of fluid flow thus ensuring that the monitor is sampling fresh batches of fluid from a monitored space.

Abstract: Linear sensing apparatus for a positive displacement meter includes relative to each piston of the meter, an elongated rectangular member rigidly attached at one end to the top face of its associated piston, and carrying at its other end a multiwindowed member that reciprocates back and forth with movement of the piston for alternately interrupting detectable energy flowing between energy transmitting and detecting devices, the detecting device converting the detected energy into alternating electrical signals analogous to the volume of fluid passed through the meter, whereafter the signals are processed via a microprocessor for obtaining the actual volume and/or price of the fluid passed through the meter over a given period of time.

Abstract: A balanced scanning mechanism for driving the transducer of an acoustic microscope or other instrument rapidly back and forth along a linear path comprising the X portion of an X-Y scan pattern comprises first and second carriages guided for movement along an axis X. The transducer is mounted on the first carriage and a counterweight may be mounted on the second carriage; the total mass of each carriage and its contents is equal to that of the other carriage. Drive belts connected to both carriages drive them reciprocally along the X axis with accelerations and velocities that are equal in amplitude but opposite in direction. In some embodiments the two carriages are nested one within the other. In another embodiment the two carriages are mounted closely adjacent to each other on an elongated, rigid guide rail parallel to the X axis, the mass distributions of the two carriages being matched relative to the guide rail.

Abstract: The differential mass flowmeter comprises two U-shaped tubes, arranged side by side, mutually rigidly coupled, and having their ends inserted into a support. The tubes are adapted for conveying fluid in countercurrent and are provided with an electromagnet adapted for producing oscillation of the tubes about an axis passing through the portions inserted into the support, and with at least two coils, each facing a permanent magnet for generating a signal proportional to the angle of inclination of the portion of the small tubes which is opposite to the support, to thus permit continuous measurement of mass flow rate differences between two sections of a tube.

Abstract: An improvement to a mass flow rate sensor which includes the provision of at least one mode selection plate at each of the inlet and outlet ends of the sensor. The plates are provided in addition to other tube end termination means and are configured to have predetermined stiffness characteristics (area moments of inertia) in the X, Y and Z axes. In one preferred embodiment, the mode selection plates are configured in a generally squashed H-shaped configuration in which the tube ends pass through the centers of the vertical legs of the H and the cross member of the H spans the space between the two tubes. In other embodiments, the plates are variously configured to alter the stiffness characteristics along the various axes of the mode selection plate.

Abstract: Apparatus for measuring mass flow of a fluid in a conduit by which the fluid passes through a moveable chamber which establishes a constant velocity profile of the flowing fluid at the outlet opening of the chamber. Measurement of momentum force at the control surface defined by the outlet opening of the chamber permits accurate mass flow measurements by application of the momentum equation.

Abstract: A device for reciprocating movement, wherein a pair of drivingly connected gearwheels each has an outwardly extending stud that engages one of a pair of spaced, aligned slots in a transverse member. The transverse member is guided for movement by a pair of laterally spaced jambs that include opposed, respective longitudinally extending slots that receive the outer end portions of the transverse member. One of the gearwheels includes an axially extending concentric track that is circular and includes at least one gap or opening, and an electrical switch in contact with the track for regulating the operation of an electrical circuit that controls the rotation of the gearwheels.

Abstract: A drive shaft continuously rotating in a single direction operates to drive a driven shaft with alternating bidirectional rotative movement through a gear transmission which includes a first gear mounted on the drive shaft and second and third gears mounted on the driven shaft, with the first gear having teeth on only a portion thereof, the teeth alternately engaging the second and third gears as the drive shaft rotates. The gear teeth on the first, second and third gears have a tooth pitch t.sub.0 and the teeth on the second and third gears are offset relative to each other by an arc length measured along the pitch circle of the gear which is not grater than one-fourth of the tooth pitch t.sub.0.

Abstract: An antibacklash gear system wherein a pair of gears mounted for limited movement therebetween are biased by a spring to move the teeth of the gears out of register, the spring serving as a link between two levers mounted on one of the gears. The position of one of the levers may be adjusted to vary the force applied to the other lever by the spring to thereby vary the force urging the gears to move relative to each other.

Abstract: Five-speed shifter for an automotive transmission comprises an outer housing, an inner housing pivotable in the outer housing about a first axis, and a shift lever pivotable in said inner housing about a second axis which extends transversely of the first axis. The shift lever has a spring loaded extension which engages a selected one of three shift rails in the outer housing by pivoting about the second axis. A gear is then engaged by pivoting about the first axis to slide the selected rail forward or backward. A pin on the shift lever cooperates with a multilevel slot in a sidewall of the outer housing to preclude shifting into reverse unless the lever is depressed. In an externally mounted embodiment, each rail has a finger extending through a floor of the outer housing. The fingers are pivotably connected to coupling rods which effect rotation of shift control shafts which extend from the gear housing.

Abstract: A camshaft in which the outer peripheral surface of a shaft (13) is provided with an axial groove (14), and a fitting member (10) is connected to the shaft (13) by liquid-phase sintering under the state in which a projection (12) on the surface of a bore (11) in the fitting member (10) is fitted into the groove (14). The projection (12) in the bore (11) of the fitting member (10) is formed so that its cross-sectional configuration is smaller than that of the groove (14) in the shaft (13). Therefore there is no possibility that the fitting member (10) made of a green compact can be damaged during the fitting or sintering.

Abstract: Axially spaced cams and bearing rings mounted on a tube are permanently secured to the tube by circumferentially spaced projections on the tube extending into grooves formed on the inside surfaces of the cams and bearing rings.

Abstract: A dual shaft rotating assembly typically used in aircraft engines is provided with a stable intershaft squeeze film damper for reducing vibration. The assembly includes a housing, a first shaft rotatable about an axis of rotation, a second shaft concentric with the first shaft and rotatable about the same axis of rotation, bearings for supporting each of the shafts from the housing, a squeeze film damper positioned between the shafts and including an annular region containing an oil film for attenuating vibration, and apparatus for maintaining the damping fluid stationary relative to the housing. The squeeze film damper includes an inner ring and an outer ring which define the annular region between them. A first intershaft bearing is coupled between the first shaft and the inner ring, and a second intershaft bearing is coupled between the second shaft and the outer ring. The inner and outer rings are maintained stationary by squirrel cages coupled to the housing.

Abstract: An improved limited slip differential gear assembly for driving each axle of a pair of coaxially aligned vehicle axles at the same rotational speed or at relatively different rotational speeds as conditions require. The assembly includes an improved externally controllable clutch mechanism for preventing excessive relative rotation of the axles. The amount of the clutch force being applied to resist relative rotation may be varied independently of the relative rotational speed of the axles and also of the torque level in the gear assembly. Preferably the clutch mechanism is incorporated in a planetary wheel type differential and is activated electromagnetically. The clutch mechanism may include a cam operated supplemental clutch device for applying an additional clutch force in response to any continued relative rotation which may occur after the first clutching force has been applied by the electromagnet.

Abstract: A differential case with a limited-slip mechanism includes a pair of axles held in coaxial relation to each other, a pair of side gears mounted respectively on inner ends of the axles, pinions interposed between and held in mesh with the side gears, a case housing the side gears and the pinions therein and supported on the axles, and a clutch mechanism interposed between the case and each of the side gears and including a plurality of discs arranged for mutual frictional engagement. The case comprises a central cylindrical body having opposite open ends and caps attached to the opposite open ends. The central cylindrical body has grooves extending axially thereof and defined in an inner peripheral surface thereof at at least one of the opposite ends, the discs having portions engaging in the grooves for preventing rotation of the discs. The caps and the one-piece central cylindrical body may be made of different materials.

Abstract: A hydraulic pressure control device in an automatic transmission, provided thereon with a mechanism capable of regulating oil pressure in response to a command value from a calculating device, including: a device for detecting oil pressure in the hydraulic pressure control device; a device for comparing the oil pressure thus detected with a target value; and a device for correcting the command value from the calculating device in accordance with the result of the comparison, wherein the oil pressure actually generated in the hydraulic pressure control device is directly detected, and the command value to control the oil pressure is corrected while the oil pressure thus detected is compared with an ideal value (a target value). With this arrangement, highly accurate oil pressure control can be continuously carried out, irrespective of variations peculiar to a mechanical system and variations in use conditions.

Abstract: A transmission for a vehicle has a shift mechanism, a hydraulic actuator for operating the shift mechanism and a hydraulic control for supplying and discharging working oil to and from the hydraulic actuator to control the shift of the shift mechanism. The hydraulic control includes a flow regulating valve for regulating flow of the working oil supplied to the hydraulic actuator, as a function of pressure of the working oil supplied to the hydraulic actuator.

Abstract: A two-piece kit facilitating the removal of a damaged wheel lug stud from a wheel hub or the like includes a ribbed nut having a splined through-aperture extending between the faces of the nut and drive-on tool defining an axially-extending recess in one of its ends for loosely accepting the nut when the nut is placed endwise within the tool recess. The through-aperture of the nut defines a plurality of radially inwardly-projecting edges extending axially along the nut and is of such size to grip the cylindrical periphery of the lug stud and thereby prevent relative rotation between the stud and the nut body when the nut is operatively driven upon the stud so that the through-aperture encircles the cylindrical periphery of the stud.

Abstract: A ratchet chuck key tool with a torque indicator for tightening and loosening a chuck. The device includes a one-way ratchet having a ratchet wheel, a pawl and a handle. The pawl, which is connected to the handle, drivingly engages and disengages the ratchet wheel as the handle is reciprocated. A shaft is connected to and rotates with ratchet wheel. A pair of chuck keys are mounted on opposite ends of shaft. One chuck key tightens a chuck and the other chuck key loosens a chuck, the handle being moved in the same direction for tightening and loosening of the chuck. One chuck key defines a purchase for turning the other chuck key and making the chuck finger tight. A torque indicator associated with the pawl provides an indication that the force required to rotate the handle and turn the chuck keys exceeds a predetermined torque level.