Abstract: A securing device is provided for a male plug connector on a portable appliance cord and a female socket connector on an extension cord. The securing device comprises an elongated elastic member. A first mechanism is at a first end of the elongated elastic member, for attachment to the extension cord proximate the female socket connector. A second mechanism is at a center of the elongated elastic member, for attachment to the portable appliance cord proximate the male plug connector. A third mechanism is at a second end of the elongated elastic member, for attached to the extension cord proximate the female socket connector. The elongated elastic member can wrap around the female socket connector and the male plug connector, thereby securing the female socket connector to the male plug connector during the use of the portable appliance.

Abstract: A device for separating a cardboard tube into cores for winding strips of material includes a mandrel mounted for rotation on a frame. A carriage reciprocates in parallel with a mandrel and may be positioned very precisely to cut cores of preselected axial width from the tube mounted on the mandrel. A blade pivots on the carriage for performing the actual cutting operation.

Abstract: An apparatus (10,100) for counterboring a pipe is attached to a pipe end surfacing machine (12) and is comprised of a frame (14) pivotally mounted to a flywheel (16). A cutting tool (50) and guide wheel (72) are attached to said frame (14). Means (91) for positioning the frame so as to locate the guide wheel (72) and cutting tool (50) relative to the pipe for machining is connected between said flywheel and said frame. In operation, the apparatus (10,100) is inserted into said pipe and the cutting tool (50) is positioned to contact the inner surface of the pipe adjacent the end of said pipe. The flywheel is activated and rotates, thereby rotating the cutting tool (50).

Abstract: A rotary slotting tool that includes a circular tool body having a V-shaped groove in its peripheral edge to establish a centering plane for individual cutter element holders. A pocket is formed in the leading face of each holder for mounting an individual cutter element. The pocket structure configuration is varied between successive holders so that successive cutter elements overhang different side faces of the associated holders. A common cutter element configuration is used for all of the cutter elements.

Abstract: An electric connector requiring decreased insertion and withdrawal force, even when including groups of 20 to 40 terminals. The connector includes a male portion, a female portion into which the male portion fits, and a cam mechanism. With the cam mechanism, the male casing fitted in a covering portion of the female casing may be slid horizontally between its original fitting position and a male and female terminal contact position, parallel to the fitting surface of the female casing, so as to slide the male and the female terminals out of or into contact with each other with less force than was required previously.

Abstract: A universal plug is provided for electrical connection with a receptacle having a configuration selected from a plurality of different configurations such that a conventional electric plug that mates properly with a receptacle having a first of the configurations is prevented from mating properly with a receptacle having a second of the configurations. The universal plug is formed with a first plug component and a second plug component, the first and second components being separable from each other so that each can be manipulated independently of the other for electrical connection to the receptacle. The universal plug will thus mate properly with a receptacle of the first configuration and will also mate properly with a receptacle of the second configuration.

Abstract: A protective hood for a tool holder with a conical part and a draw-in member connected thereto is disclosed, wherein the protective hood has a cover piece, which is adapted to the conical part and envelops this conical part so as to be soil-proof, and a flexible clamping device, which locks detachably the draw-in member.

Abstract: A holding device (50) for securing two electrical articles (22,94) together includes a U-shaped leading end (52) having a pair of leg portions (54). The U-shaped end (52) and adjacent leg portions (60) define a spring means, adapted to be received in an aperture (96) of the second article (94). The legs (54) extend to free ends (70) and define a retaining section (73) adapted to be received into a recess (32) within a housing (24). The recess (32) includes a central wall portion (42) having leading engagement sites (44), which cooperate with inner leg edges (58) to secure the device (50) within the housing (24).

Abstract: A screw cutting method for use with a numerically controlled machining system is improved by enabling finer finishing of the final screw surface. The invention allows the removal of scars formed during rough machining by offsetting the position of the rough machining passes in the direction of screw cutting, i.e., in the direction of movement of the tool during cutting, so that during the final finishing pass, more material is removed from the screw surface opposing the cutting direction. Surface finish is further improved by specifically controlling the cutting depth in the cutting passes just preceeding the final cutting pass.

Abstract: A milling cutter includes a generally cylindrical body whose outer periphery is formed with angularly spaced pockets capable of accepting indexable cutting inserts of various shapes such as octagonal inserts, square inserts or round inserts. The cutting face of each insert defines a single shallow frusto-conical surface in order to impart a gradual curvature to the cutting edges. This geometry, together with the geometrical location of the inserts in the body, enables the cutter to cut in an extremely free manner and with high efficiency.

Abstract: A cutting tool for finishing a back surface of a workpiece having a hole is proposed. A blade having an equilateral triangular shape is attached to a shaft of the cutting tool. One of cutting edges formed along the sides of the blade projects transversely of the shaft. The tip of the projecting cutting edge comes to contact the workpiece's back surface. When the workpiece is rotated and the shaft is moved in the diametrical direction relative to the hole, the cutting edge tip grinds the back surface. At this time, if the shaft moves in the longitudinal direction of the workpiece, the blade creates a notch in communication with the hole on the workpiece's back surface, resulting in a stepped borehole.

Abstract: A cutting-off tool having an insert having two side cutting edges formed by the ridge lines defined by a rake face and side flanks. These edges are chamfered so that the cutting edge at one side which is likely to hit the falling part of the material cut off is chamfered by a larger width than at the other side.

Abstract: A battery connector assist unit comprising a base having means to secure a battery connector first part thereto and a slidable member interconnected to the base with the slidable member having a slide base having an upper surface and a lower surface. The lower surface is adjacent to the base. The slidable member also has a pair of smooth sided cantilevered beams extending therefrom for temporarily retaining a battery connector second part and for transmitting force from the slidable member to the connector. The slidable member has a handle member easily accessible to assist in removing the connector parts into and out of mating relationship. In one embodiment of the invention, the base has at least one slot therein and a slidable member has means to engage at least one such slot, while in another embodiment of the invention the slidable member has at least one slot therein and the base has means to engage at least one such slot. In the preferred embodiment of the invention, a cover plate is provided.

Abstract: A metal cutting tool having a tool holder and a pocket formed in the tool holder in which an insert is to be replaceably retained, there being formed in the tool holder an elongated tubular recess which opens into the pocket and there being furthermore provided a replaceable element having a split tubular coupling portion formed integrally therewith so as to be insertable upon spring-like compression into the tubular recess. This replaceable element is preferably constituted by an insert seating shim.

Abstract: The connector has an annular side wall with ball receiving apertures formed therethrough and a rearward flared wall. An insert having a rearward flared wall and carrying electrical contacts is located in the annular side wall. An annular receptacle having ball supporting apertures formed therethrough is located between the insert and the annular side wall for movement to forward and rearward positions where the receptacle apertures are out of and in alignment respectively with the annular side wall apertures. An outer annular spring is located around the flared wall of the insert for urging the receptacle to its forward position. An outer annular member having forward and rearward grooves separated by an inward extending wall is located around the annular side wall for movement to forward and rearward positions. A second annular spring is located around the flared wall of the annular side wall and in the rearward groove of the outer annular member for urging it to its forward position.

Abstract: The present invention relates to a numerically-controlled lathe, a numerically-controlled device therefore and a procedure for processing a workpiece thereby. An object of the invention is to provide a numerically-controlled lathe adapted to designate one of two spindles and three tool rests and a procedure for processing a workpiece thereby.

Abstract: The formation of intermittent chips or chip breakage are assured while machining a rotating workpiece by causing the undeformed chip thickness to vary periodically and be reduced to zero in each period of its variation. To obtain the periodic reduction of the undeformed chip thickness to zero, a cutting tool is made to oscillate along its feed advance path. Tool oscillation is controlled so that the tool's position depends on the angular displacement of the rotating workpiece. The number of cycles of tool oscillation per revolution of the workpiece may be freely chosen depending on the required length of chip segments. The oscillation amplitude needed to form intermittent chips depends on this number, feed advance per revolution, and number of simultaneously applied cutting edges of the tool. The oscillatory movement of the tool may be enforced in many ways.

Abstract: An electrical termination connector includes a substrate mounted to an insulating housing where the substrate includes conductive paths at a front edge of the substrate interconnected to electrical traces deposited on an upper and lower surface of the substrate. The electrical traces are electrically interconnected to electronic passive devices such as resistors and capacitors to simulate an impedance load to a mateable electrical connector. The assembled substrate and housing are shielded by a front shield member having a shroud surrounding the conductive paths and by upper and lower clam shell shield members which are latched in place to the front shield member. An outer insulating housing is overmolded over the assembled shielded connector to encapsulate the upper and lower shield within the outer insulating housing.

Abstract: A locking electrical cord connector includes both male and female contacts. The device includes a housing of electrically non-conductive material including a cylindrical cavity. A pair of opposed plungers are mounted for reciprocation in this cavity. An actuator switch in the form of an elliptical disc is mounted for reciprocation in the housing about a center shaft between the plungers. Each plunger is biased into engagement with the outer cam edge of the disc by means of springs. In use, the male connector of another electrical appliance is connected with the female connector of the device. The female end of a second electrical appliance is connected with the male connector of the device. The actuator switch is then turned so that the plungers are forced outwardly against the biasing of the springs.

Abstract: A chuck support base for very accurate machining of parts includes a pair of interengaging members through which rotary motion is delivered to a tool holding chuck. The member on which the chuck is mounted has a ring with an internal frusto-conical exterior surface of a drive member mounted on the chuck support base of a machine tool. Both the ring and the driver member are secured to their supporting members by a bonding agent which initially is liquid and hardens while the structure to which it is attached is rigidly supported in a jig so that any variation from total concentricity with the axis of rotation of the tool is eliminated by compensating the positioning of the two rings before the bonding agent sets.