Abstract: A screwdriver having its blade end rotated slightly about its longitudinal axis and also provided with arcuate cutouts at the rotation, so that the combination of these two structural features provides an aligning edge that remains in the observation of the user and facilitates placement of the screw-turning edge in the slot of a screw head.

Abstract: An apparatus for polishing semiconductor material is described in which a movable polishing arm is mounted to a cabinet. Connected to the polishing arm is a workpiece holder or sometimes referred to as a wafer chuck. Adjacent to the polishing arm is a load station which positions the wafer for pick-up by the polishing arm and attached wafer chuck. Mounted to the cabinet, next to a brush station, is a primary polish station which is used to remove the majority of the material. Alongside of the primary polish station is a final polish station used to provide a finished surface to the wafer. The polishing arm discharges the polished wafer into an unload station which is located next to the final polish station.

Abstract: This relates to a portable abrasive throwing wheel device or abrasive blasting device which is utilized for blasting castings and the like to effect the cleaning thereof. The portable device is of such a construction whereby its total weight is on the order of 100 pounds and is so suspended wherein it is very little thrust reaction on an operator so that it may be readily manipulated. Further, the principal thrust of the device is carried by the suspension for the device and otherwise is directed towards the operator so that is may be readily counteracted. The portable device includes a fixed motor and a fixed abrasive supply with a throwing wheel carried by the motor and only the housing portion being movable. The housing is rotatable about the axis of the motor and serves to permit the discharge opening of the device to be tilted to the desired angle for directing the abrasive blast where desired.

Abstract: Successively finished drills or other tools are ejected from a chuck into successive angularly spaced openings in a rotary turret, mounted on a carriage with a power device for reciprocating the turret into and out of an unloading position. A ratchet wheel on the turret is indexed through successive detented positions by engagement of the ratchet wheel with a pawl, as an incident to the reciprocating movement. The pawl is mounted on a stationary pivot and is biased into the path of the reciprocating ratchet wheel.

Abstract: A method of displacing or feeding the honing tool of a honing machine dur long stroke honing when machining workpiece bores. Rapid displacement feeding or and subsequent machining displacement or stock removal feeding are effected with only a single motor employed in common for different operation, which is controlled in such a way that during rapid feeding or displacement it operates at high speed and low limiting angular momentum or torque limit. Due to the low angular momentum or torque limit during rapid displacement, the speed is rapidly reduced when the honing stones come to rest agianst the bore wall. The control mechanism thereupon reverses the single motor, returns the honing stones by a small amount, and changes over to the machining or stock removal feeding process, which is accomplished at low motor speed and high limiting angular momentum. When a pretermined finished size has been achieved, a displacement control mechanism returns the honing tool to its starting position.

Abstract: A hatch assembly has an annular seat, a hatch cover and a plurality of latching units. Each latching unit has a slidably supported locking bolt movable generally radially inwardly with respect to the annular seat into a hatch cover locking position and generally radially outwardly into a hatch cover releasing position. In the hatch cover locking position at least one length portion of the locking bolt extends over the hatch cover for maintaining the hatch cover on the annular seat. Each latching unit further has a rotary crankshaft, an operating handle torque-transmittingly connected to the crankshaft for applying a locking torque and an opposite, releasing torque thereto; and a coupling mechanism for connecting the crankshaft with the locking bolt and for converting rotary motion of the crankshaft to linear motion of the locking bolt. The coupling mechanism has a spring for transmitting the locking torque from the crankshaft as a radially inwardly oriented resilient force to the locking bolt.

Abstract: An improved adjustable socket for use with a ratchet wrench drive handle to loosen or tighten bolts, nuts and other threaded workpieces, is comprised of a hollow cylindrical casing having a passive end adapted to receive a wrench handle protuberance, an opposing work end adapted to fit about a workpiece and a sidewall interconnecting such ends with one another and defining a cavity therebetween. A plurality of uniformly spaced apart through-openings are provided in the casing sidewall between the opposing ends thereof and a cylindrically shaped gripping member is pivotally mounted along a vertical eccentric axis thereof within each through-opening so as to be selectively moveable into and out of the casing cavity. In use, the adjustable socket is mounted onto a wrench handle and positioned about a threaded workpiece.

Abstract: A guiding and transporting arrangement employs opposed guide rails which have longitudinally extending guide structure associated therewith for slidably accommodating a lead frame between the guide rails, which guide rails are slidably supported on transversely extending guide rods, and are drivingly coupled together by a threaded screw arrangement which can be driven to accurately move the guide rails inwardly and outwardly to adjust the spacing therebetween. A conveyor is disposed for cooperation with the guide rails and is disposed below the lead frames to drivingly displace the lead frames longitudinally along the guide rails.

Abstract: A fluid-operated wrench has a support, a ratchet gear turnably mounted on the support, a pair of driving pawls respectively having free ends engagable with the teeth of the ratchet gear, a drive with a driving element reciprocable along a forward and reverse stroke, a transmission between the driving element and the driving pawls and formed so that during the forward stroke one of the pawls turns the ratchet gear in one direction and during the rearward stroke the other of the pawls turns the ratchet gear in the same direction, wherein the transmission includes a driving arm, and the driving pawls are pivotally connected to the driving arm and at the same time guided in elongated curved slots formed as arcs of two circumferences which are described by two different radii with a center on the axis of the ratchet gear. The wrench has a housing accommodating the drive and also having an inner space in which the support together with the other element can be releasably insertable.

Abstract: Driver jaws for a driver head of an automatic screw feeding machine are disclosed. A pair of cantilever springs are oppositely disposed on a mandrel or housing. The springs are arranged such that the tips thereof form an opening therethrough which comprises the jaws for holding a fastener during the insertion process. The cantilever springs allow the jaws to open to permit the head of the fastener to pass therethrough after the fastener is fully inserted and to be released from the driver jaws. The cantilever springs permit an exceptionally small clearance spaced around the head of the installed fastener. The tips of the jaws spaced the movable portions of the apparatus away from the work surface so that marring or scratching of the work surface is avoided.

Abstract: A wet blasting machine having a blasting apparatus wherein slurry is supplied from a main hopper through a supply conduit to a blasting gun. Slurry can be bled from the supply conduit through a control valve into a vessel for collecting a predetermined volume of slurry. The weight of the vessel is measured to generate a first signal which represents the slurry weight, and hence the slurry concentration. The first signal is compared to a second preset signal which represents the desired slurry concentration. If the second signal indicates that the slurry concentration in the main hopper is less than the desired magnitude, then the comparator emits an output signal which activates a supply device for adding additional media to the main hopper. The supply device preferably includes a mixing hopper to which both dry media and slurry from the main hopper are initially fed and mixed, prior to the enriched slurry then being fed into the main hopper.

Abstract: A workpiece to which traction to be applied is firmly held by a gripping device to which is anchored one end of an impacting hammer having a rectilinear guide with a free end directed away from the workpiece. An impact member of high inertia is slidably disposed on the guide for rapid movement toward an impacting engagement with an abutment carried by the guide adjacent its free end, whereby the resulting tensional forces in the form of a sudden impulse are transmitted through the gripping device to the workpiece for use, for example, in withdrawing the workpiece from a member in which it is firmly anchored or embedded. The gripping arrangement of at least one jaw of the gripping device utilizes a single tooth which is harder than the workpiece to be extracted so that such tooth effectively bites into such workpiece to provide a firmer grip. In another embodiment, each jaw may include a tooth each biting into the workpiece in alignment with each other or in staggered alignment.

Abstract: A torque wrench, basically exemplified by a torque beam having a driver at one end, a grip at its other end and apparatus associated with said driver and beam providing an observable read-out of any torque that may be developed during use of the wrench, particularly distinguished by a system for defining a prescribed torque limit in use thereof having means associated therewith for producing a highly distinctive alarm signal the nature of which is such to produce an instantaneous torque limiting response of the user at precisely that time the level of the torque applied to said beam reaches said prescribed limit. In a preferred embodiment the system for producing said signal is located in connection with a housing which is releasably based on and secured to said beam immediately of its grip, the means through which the signal is triggered is functionally related to a portion of said read-out apparatus and the alarm signal is preferably provided by a source of light and optionally by a source of sound.

Abstract: A fluid-operated wrench, comprises at least one cylinder-piston unit having an axis and including a cylinder and a piston provided with a piston rod and movable together with the latter in axial direction, the piston rod having a free end operative for engaging one object, and a linkage connected with the cylinder and having a free end portion which is operative for engaging another object, so that when the one object is stationary while the other object a turnable threaded connector and the free end of the piston rod is brought into abutment against the one stationary object and then extended, the linkage is turned and thereby the free end portion of the linkage turns the turnable threaded connector, the linkage extending from the cylinder substantially in the axial direction.

Abstract: A holding device for workpieces, which is rotatably mounted in the side-walls of a centrifugal blasting machine, including a support member and holding member. Both members are pivotably mounted diametrically opposed with respect to the axis of rotation. By means of a pivot drive, both members can be simultaneously moved toward one another and away from one another. Through this, the holding device can be adjusted in each given case in such a manner, so that workpieces of different height can be retained in a centralized position with respect to the axis of rotation, in order to subject them in a rotating manner to a uniform centrifugal blasting treatment.

Abstract: A cam grinding machine wherein the slide which supports the grinding wheel need not support the motor which rotates the grinding wheel so that the inertia of the slide is low and the slide can be reciprocated toward and away from the rotating workpiece at a high frequency, without risking the development of sympathetic vibrations, in order to account for changes in the angular position of the workpiece and, if necessary, also for wear upon and for dressing of the grinding wheel. The motor for the grinding wheel is mounted on a carriage which supports the slide or is mounted on the bed of the grinding machine next to the slide for reciprocatory movement toward and away from the workpiece.

Abstract: An apparatus, consisting of a movable casing connected to a drive mechanism. A chamber is arranged in the movable casing and filled with working medium. The movable casing has a diaphragm connected with a mechanism for backward and forward movement. The movable casing is horizontal and the diaphragm, of which there is at least one, is mounted in the chamber of the movable casing on a sliding coupling. The working medium is a mixture of spheres and working fluid, and the movable casing is connected with a working fluid source.

Abstract: A nail holding accessory for a hammer includes a body member having an upstanding pair of gripping fingers formed at a forward end thereof and an arcuate surface defined at a rearward end thereof. The pair of gripping fingers establish therebetween an open-ended slot for receiving and retaining a nail forwardly of a striking face of the hammer. An elastomeric band having a portion connected to the body member forwardly of the arcuate surface and a remaining portion adapted to encompass a transverse exterior section of the hammer rearwardly of the striking face thereof is provided for coupling the body member to the hammer such that the pair of gripping fingers are positioned forwardly of the striking face of the hammer. Rebound of the hammer away from a nail initially driven into a wooden board or like workpiece causes the gripping fingers to exert a pivot force on the body member thereby responsively pivoting the gripping fingers away from the striking face of the hammer to release the nail.

Abstract: Emergency gas shut-off tool; comprising a three-dimensional shank, having an upper end terminating in a butt and an inverted U-shaped three-dimensional head mounted rotatably to the shank adjacent the butt so as to form a closed space therewith.

Abstract: A clutch for power screwdrivers. It has a transmission, an adjustable bit stop, and a drive shaft. It also has a cogwheel with cams on one face and a clutch disk with catches on one face mounted on the drive shaft. The object is a low-noise, wear-resistant clutch. The drive shaft is in one piece. An intermediate disk with catches on one face and cams on the other face is positioned between the cogwheel and the clutch disk. A spring mechanism is positioned between the cogwheel and the intermediate disk.