Abstract: A process and device for shaping the end of a tube with an oblong cross-section to a circular cross-section, where the shaping occurs in a single radial compression stage from the exterior. The tube is disposed with its shortest axis in correspondence with two fixed opposite surfaces, having a circular profile with a radius of curvature which is approximately equal to the radius of the circular section of the tube which is to be obtained. A radial compression is then exerted along the longest axis of the oblong section of the non-deformed tube by a pair of shaping surfaces having an angular extension which is complementary to those of the fixed opposite surfaces.

Abstract: A crimping apparatus is disclosed utilizing an angular motion actuator and a unique tooling bar arrangement to redirect the angular motion so that the crimping dies move along a straight line during the crimping process. Two identical tooling bars are utilized that interengage to form a sliding assembly so that the two crimping dies, formed in the tooling bars, move along the straight line. The tooling bars, which are operated by the actuator, have complementary recess and projected portions. The projected portion of each bar is nested within the recess of the other bar. Each tooling bar has an elongated opening and a pin that slidingly engages the elongated opening of the other tooling bar to limit the sliding motion to motion along a straight line.

Abstract: A hydraulic press comprising a hydraulic cylinder including a cylinder tube and a piston slidable within the cylinder tube and having a piston rod extending from the piston and adapted for actuating a movable die of a metallic mold including a stationary die cooperating with the movable die. The cylinder tube (11) of the hydraulic cylinder (10) is extended beyond the piston rod (14) and secured at its extended end to a base plate (15), and an extended portion of the cylinder tube is provided with at least one opening (16) for inserting the metal mold (9) in a space (19) within the extended portion (20) of the cylinder tube (11) to set the movable die (a) on the end of the piston rod (14) and the stationary die (9b) on the base plate (15) and thereby to reduce weight and manufacturing cost of the hydraulic press having a high strength against eccentric load and further to provide an improved hydraulic press easily changeable in its layout.

Abstract: Crimping dies for hydraulic compression tools for electrical connectors and the like in which one of the dies in a matching set is provided with means for engaging and stopping a connector workpiece in proper position for crimping in the die jaw.

Abstract: A jointing clamp for pressing pipe connections, particularly for pipes of composite materials, includes two pressure clamps, each of which carries a form part of a form insert and which are connected with one another by connecting plates that are disposed on either side, and which are supported at the connecting plates so that they are can be pivoted in opposite directions about parallel pivoting axes and can be moved into the closed position by means of a clamp driving device which can be connected to the jointing clamp by means of a crossbolt reaching through aligned boreholes in the connecting plates. In order to achieve a pressed pipe connection of high form accuracy, the form insert is constructed in three parts and the third form part is supported in a stationary manner between the connecting plates of the jointing clamp.

Abstract: A portable tool for crimping a ferrel portion of a tube fitting around a hose is provided. The tool has an upper and lower frame. The upper frame has a means for stabilizing an upper die carrier which encloses an upper die insert. The lower frame encloses a lower die insert. A compression shaft is inserted through an aperture formed in the upper frame for moving the upper die carrier along a vertical axis of the tool. A means for pivoting the upper frame in relation to the lower frame is provided to allow a user to open and close the tool. A locking means is further provided permitting the upper frame to be locked to the lower frame during a crimping procedure. The compression shaft can be actuated manually, electrically, or hydraulically. The tool may further be set into a framed housing for use in a manufacturing environment.

Abstract: A crimping apparatus for crimping a root end of an eyeless needle to fix a medical suture between an upper mold and lower mold. This apparatus comprises a swing arm disposed in parallel with the root end of the eyeless needle and the upper mold fixed to the swing arm. This apparatus also comprises a pivoting axis of the swing arm, being long enough to a crimping length of the eyeless needle. This pivoting axis is disposed far enough from the upper mold.

Abstract: An object of the present invention is to provide a terminal crimping machine which assures that undesirable bending of a cable caused due to the fact that a terminal firmly fitted into a crimper is raised up together with the crimper after the time of terminal crimping is reduced as far as possible. A terminal crimping machine includes a crimper 3, an anvil 4 located opposite to the crimper 1, and a stopper 13 composed of a terminal disconnecting piece 14 and an arm piece 15, and the arm piece 15 is turnably disposed on a guide frame 11 of the ram 2 to turn about a pin 12. A tension spring 20 is bridged between the arm piece 15 and a spring fixing piece 19. As the ram 2 is lowered, it comes in slidable contact with the arm piece 15 so as to allow the arm piece 15 assume an upright attitude. At this time, the terminal disconnecting piece 14 is located at the terminal disconnecting position higher than the anvil 4 by a predetermined distance.

Abstract: A head assembly for a compression tool including a pair of opposite, rotatably mounted jaw members. Each jaw member having a compression end which is moveable between a first position in engagement with the compression end of the opposite jaw member and a second position wherein the compression ends are spaced apart from each other. The compression end of each jaw member having an interior nib surface, a semi-circular groove surface, an engagement surface and distal compression surface. The head assembly includes a center nib which is operably associated with the interior nib surface of each jaw member to provide three generally equidistant points of contact around the circumference of a connector that is placed therebetween for compression.

Abstract: The pressing tool (10) comprises two holding members (26,28) adapted to be moved towards each other and having press dies (44,46) displaceably arranged thereon. Adjacent press dies (44,46) are oriented at a right angle to each other, with two press dies (44) being supported on one holding member (26) and two further press dies (46) being supported on the other holding member (28). The press dies (44,46) of both holding members (26,28) can be displaced along an axis extending at an angle of about 45.degree. to the moving direction of at least one of the two holding members (26,28). Prior to the pressing process, the press dies (44,46) are spaced from each other, and during the pressing process, while the holding members (26,28) approach each other, the press dies (44,46) move towards each other until reaching their final closing position.

Abstract: A press working apparatus has a press machine provided with a pair of press dies. The press machine presses a preheated metal slab being transferred in a feeding direction with the press dies mutually opposed to press the metal slab in a direction perpendicular to the thickness of the metal slab. Each press die has a pressing surface facing a respective surface of the metal slab. The pressing surface of each press die has a predetermined length extending in the feeding direction of the metal slab. At least one of the pressing surfaces has a cross section perpendicular to the feeding direction of the metal slab. The shape of the cross section gradually changes along the feeding direction of the metal slab so as to have a predetermined sectional shape for forming the metal slab into a required sectional shape. At least one surface of the metal slab is gradually formed into a predetermined sectional shape as the metal slab is passing through the press machine.

Abstract: An apparatus for presenting a curved workpiece to a workstation, includes a frame member and a guide channel associated with the frame member for receiving a curved workpiece in a generally upright position. A first pusher mechanism is reciprocally movable in a transverse direction relative to the guide channel for engaging and positioning the workpiece against a bearing surface of the guide channel. A second pusher mechanism is advanceable within the guide channel to engage the workpiece and to advance the workpiece to the workstation. The apparatus has particular application in the manufacture of curved surgical needles.

Abstract: A jointing clamp for pressing pipe connections, particularly for pipes of composite materials, includes two pressure clamps, each of which carries a form part of a form insert and which are connected with one another by connecting plates that are disposed on either side, and which are supported at the connecting plates so that they can be pivoted in opposite directions about parallel pivoting axes and can be moved into the closed position by means of a clamp driving device which can be connected to the jointing clamp by means of a crossbolt reaching through aligned boreholes in the connecting plates. In order to achieve a pressed pipe connection of high form accuracy, the form insert is constructed in three parts and the third form part is supported in a stationary manner between the connecting plates of the jointing clamp.

Abstract: A slim-line portable hose ferrule crimper is formed by a bar with a pair of spaced parallel tracks extending from one side thereof. A movable crimping die holder holding a crimping die half is mounted on the tracks adjacent the bar, and is moved back and forth by a threaded screw passing through the bar and into the movable holder. A stationary holder for a complementary second die half confronting the movable holder is releasably secured at a fixed location on the tracks, but may be released by a pivoting latch to permit its removal from the apparatus.

Abstract: A method of reducing the end portion of a pipe to a smaller diameter of exact and smooth dimensions for fitting therein a roller contact bearing comprises the steps of; inserting into the end to be reduced a mandrel of an outside diameter coextensive with that of the bearing to be inserted and of a length coextensive with the predesignated length of the reduced portion; placing the pipe together with the inserted mandrel into a split die having a first portion of a length coextensive with that of the predesignated reduced length of the pipe and of an inner diameter coextensive with the predesignated outer diameter of the pipe, and a second portion of a diameter at least coextensive with the original diameter of the pipe; and placing the die and the pipe into a press for compressing the pipe end by means of the die and the mandrel.

Abstract: A crimping tool system is provided for compressing a connector component onto an optical fiber cable, wherein the component includes an open end into which the cable is inserted. A tool includes a pair of jaws relatively movable toward and away from each other. Each jaw includes a first stage recessed surface area combining with the first stage recessed surface area of the other jaw to define a first stage crimping cavity sized to compress the cable sufficiently to ensure that the cable is insertable into the open end of the connector component. Each jaw includes a second stage recessed surface area combining with the second stage recessed surface area of the other jaw to define a second stage crimping cavity sized to compress the connector component onto the cable. The second stage recessed surface areas have protrusions for indenting the connector component and driving portions of the component against the cable.

Abstract: A crimp tool for pressing the end sleeves of strands with a pair of jaws (1, 2) held in a pivot bearing (5) and swivellable about the pivot bearing by means of a drive (9) acting upon the driver ends of each jaw (1, 2). A cheek plate (20, 21) is connected to each of the clamp ends of the jaws (1, 2), and is movable into a first pressing position (17) for universally covering a range of cross-sectional areas of end sleeves (19). The jaws (1, 2) each include a rigid area (7) and a resilient area (8). A first stop (26) and counter-stop (27) are connected between the cheek plates (20, 21) and the resilient area (8) of each jaw (1, 2) and a second stop (28) and counter-stop (29) between the cheek plate and the rigid area (7) of each jaw (1, 2).

Abstract: An apparatus for collapsing and crushing heavy-duty steel well casings and similar pipes to terminate flow of liquids such as crude oil therethrough, a housing portion gripping and sealing spaced portions of the casing, casing collapsing rams at opposite sides of the casing and between said portions of the housing and confined within portions of the housing; and a pair of hydraulic cylinders driving the rams inwardly against the casing to collapse it and crush it to reduce and substantially prevent flow of liquid or crude oil through the casing.

Abstract: A method is provided of forming a sleeve to tube joint of enhanced resistance to pressure loading and which can be employed with relatively large diameter pipes, in which the sleeve and tube are crimped to each other by diametrically opposite crimps extending concavely inwardly of the outer surface of the sleeve and convexly inwardly of the inner surface of the tube, the respective crimps being isolated from each other by struts extending parallel to the longitudinal axis of the sleeve and tube, provision being made for equalization of the stresses produced in a seal ring contained in an annular flange of the sleeve during compressive reduction of the annular flange, provision also being made for the axial movement of the sleeve relative to the tube during compressive reduction of the flange.

Abstract: A pressing machine for reducing the width of a hot metal slab has a pair of platens which are caused to engage with opposite edges of the slab to apply forces which reduce the width of the slab. This pressing action may cause buckling of the slab and to prevent, or at least reduce, the buckling, one or both of the opposite faces of the slab has a restraint provided adjacent thereto. The restraint may be in two parts connected to respective platens and arranged to allow for movement of one platen with respect to the other platen.

Abstract: A compression tool includes a housing having adjacently disposed first and second oppositely disposed portions defining therebetween a clearance. First and second pivot levers are provided, and each of the levers is pivotally secured to one of the portions and extends therefrom beyond the housing. At least three compression jaws are operably associated with the housing and disposed about the clearance. One of the jaws is secured to the housing and the other two of the jaws are each connected to one of the levers and are pivotal therewith. The one jaw is separate from the first and second levers. Each of the jaws has an arcuate compression surface. A movement assembly is operably associated with each of the levers and the associated jaw for causing cooperating movement thereof. A drive assembly is operably associated with each of the levers and is disposed exteriorly of the housing for causing pivoting thereof between a first open position and a second closed position.

Abstract: A hand tool having upper and lower jaws with a pair of complimentary solid die surfaces for contacting and compressing substantially the entire periphery of a cable connector sleeve. A plurality of plate-like intermeshing teeth and slots extend away from a pivot pin for the jaws in planes substantially perpendicular to the longitudinal axis of the pivot pin and the connector and form a U shaped opening adjacent a die surface on each of the jaws for receiving and enclosing the connector as it is compressed. At least some portions of the teeth and slots remain intermeshed as the jaws move to the opened position. The meshing slots and teeth have facing ends spaced from one another except for portions thereof contacting each other to limit closure of the jaws as the die surfaces close and compress and crimp to connector to a desired degree onto said cable. The portions of the ends of the meshing slots and teeth contacting each other are adjacent to the die surfaces.

Abstract: A pair of dies is disclosed for attaching a surgical needle having a generally cylindrical end portion defining an elongated aperture having a generally circular cross-section and a suture having a generally elongated end portion of generally circular cross-section corresponding in dimension to the elongated aperture of the first needle. Each die has a pair of extensions spaced apart from each other and defines a generally circular crimping surface portion corresponding in dimension and configuration to the generally cylindrical outer surface portion of the needle.

Abstract: This invention is directed to a novel pipe ring crimping tool which is adapted for crimping a ring over plastic plumbing pipe onto a plastic fitting.

Abstract: A tool is provided of forming a sleeve to the joint of enhanced resistance to pressure loading and which can be employed with relatively large diameter pipes, in which the sleeve and tube are crimped to each other by diametrically opposite crimps extending concavely inwardly of the outer surface of the sleeve and convexly inwardly of the inner surface of the tube, the respective crimps being isolated from each other by struts extending parallel to the longitudinal axis of the sleeve and tube, provision being made for equalization of the stresses produced in a seal ring contained in an annular flange of the sleeve during compressive reduction of the annular flange, provision also being made for the axial movement of the sleeve relative to the tube during compressive reduction of the flange.

Abstract: A tool for installing a retaining ring onto the threaded shank of a bolt to form a captive panel fastener. Alignment tabs formed on the retaining ring are positioned into cutout portions formed in the nose area of the tool. The tool and ring are then engaged onto the bolt from the outer end by first aligning visual markings formed on the tool jaws with longitudinal slots formed on the bolt shank. Force is then applied to the tool to crimp the ring and deform it while forcing tangs on the ring into the slots. The ring is prevented from being removed from the bolt slots while being free to move therealong.

Abstract: An apparatus is disclosed for attaching a surgical needle having a generally cylindrical end portion defining an elongated aperture having a generally circular cross-section and a suture having a generally alongated end portion of generally circular cross-section corresponding in dimension to the elongated aperture of the needle. The apparatus includes a pair of dies, each having a generally arcuate surface portion having irregularities including concave portions such that when the cylindrical end portion of the suture is positioned within the aperture of the needle and the dies are positioned about the generally cylindrical end portion of the needle with the surface portions facing the outer surface thereof, the application of inward force to the dies causes the dies to impact the needle and produces inward crimping of the needle so as to attach the needle to the suture.

Abstract: A die and method for forming indentations in a grounding rod. The die is a U-shaped die for use in a hydraulic compression tool. The die has an inner face forming a general recess and has a plurality of series of individual tooth-like projections. The die is used to form a plurality of series of individual tooth-like indentations on an exterior surface of the grounding rod such that a connector can be compressed onto the rod with portions of the connector being deformed into the indentations to fixedly connect the connector to the rod.

Abstract: A method of making an electrically-operated fluid valve for improving the metal-to-metal sealing of the valve needle to the valve seat, particularly of the rounded tip end of the needle to a frusto-conical depression in the seat. The method comprises applying a controlled axial compressive load to the seated needle to cause the annular zone of sealing contact between the needle and the seat to be coined.

Abstract: A swaging tool is provided for swaging a fitting and joining two tubes together, especially fittings in difficult-to-access areas. A removable head of the tool holds a first die stationary with respect to a second die moved toward the first die by a double piston arrangement within the tool cylinder. The head is slideably removable directly from the cylinder by a tongue and groove configuration on the head and cylinder, respectively, which further includes head alignment means to ensure proper orientation of the dies. Additional die aligning features are provided, as well as other features, including means for recognizing tool wear, an improved return spring for retracting the pistons, tool insertion guides to facilitate assembly of the tool and other features which result in an extremely compact and lightweight tool.

Abstract: A hydraulic tool for crimping electrical connectors having a die head subassembly in which the moveable power ram is constrained to axial movement along its power cylinder axis and prevented from rotating about the cylinder axis or canting as it moves outwardly of the cylinder during a connector crimping operation.

Abstract: A pair of dies is disclosed for attaching a surgical needle having a generally cylindrical end portion defining an elongated aperture having a generally circular cross-section and a suture having a generally elongated end portion of generally circular cross-section corresponding in dimension to the elongated aperture of the first needle. Each die has a pair of extensions spaced apart from each other and defines a generally circular crimping surface portion corresponding in dimension and configuration to the generally cylindrical outer surface portion of the needle.

Abstract: A hand tool of the pliers-type configuration used for crimping electrical terminals is disclosed. The tool includes a pair of jaws movably with respect to one another by the actuation of a pair of handles. The jaws define a crimping nest which supports an electrical terminal. One die of the crimping nest includes a raised surface, and depending tapering side walls. The raised surface of the die has an hour-glass configuration. The particular shape of the die limits the pressure applied to the terminal during crimping, so as to reduce the tendency to overcrimp the terminal.

Abstract: A tool head for use in crimping a connector to a conductor, where the connector and conductor extend in a longitudinal direction. The tool head defines a crimping area about which a plurality of crimping nibs are mounted for movement into the crimping area so that the nibs act to indent the connector during a crimping operation of the tool head. Each nib is elongated and includes a connector indenting surface formed by a segment of a cylinder the axis of which extends transverse to the direction of elongation of the nib. In the preferred embodiment, four nibs are provided to define two opposing pairs of nibs. The nibs of one opposing pair are elongated generally transverse to the longitudinal direction of the connector, and the other opposing pair of nibs are elongated generally parallel to the longitudinal direction of the connector. Therefore, the nibs of each pair are elongated generally perpendicular to the nibs of the opposite pair.

Abstract: A sleeve to tube joint is provided of enhanced resistance to pressure loading and which can be enployed with relatively large diameter pipes, in which the sleeve and tube are crimped to each other by diametrically opposite crimps extending concavely inwardly of the outer surface of the sleeve and convexly inwardly of the inner surface of the tube, the respective crimps being isolated from each other by struts extending parallel to the longitudinal axis of the sleeve and tube, provision being made for equalization of the stresses produced in a seal ring contained in an annular flange of the sleeve during compressive reduction of the annular flange, provision also being made for the axial movement of the sleeve relative to the tube during compressive reduction of the flange.

Abstract: A locator for a crimping tool is provided with a grip element accommodating an electrical connector for each pair of dies. The grip elements(s) is (are) carried by a carrier block means which is rectilinearily movable between a stand-by position, in which with the aid of a lever and a slanting track the grip element(s) is (are) located in the area between the open jaws of the crimping tool (10), and a rest position, in which they are located completely outside this area.

Abstract: An electrical connection of a terminal contact to an electrical conductor is crimped by applying compressive force to the right and left sides of the barrel of the contact but not at the center and not applying it directly toward the center, thus forming an "oblique" crimp. Such an oblique crimp can be formed using a punch die and an opposing anvil die each having a crimping surface with a central recessed relief ara whereby the crimping surface does not compress the center of the contact barrel. On each side of the relief area is a substantial diagonal portion of the crimping surface, and outward therefrom is a transverse shoulder, both of which engage the contact barrel during crimping. This crimp is especially useful for contacts having closed or seamless barrel walls and also especially for crimping a slightly oversized barrel to a many-stranded conductor without an intermediate sleeve, and it is particularly useful where confined crimping is required.

Abstract: A valve for use in a hydraulic compression tool. The valve has a frame with a central chamber, a first inlet, a second inlet and a discharged outlet. A first gate is located at the first inlet. A plunger assembly having a first plunger member and a second plunger member are movably mounted in the central chamber with a spring biasing the plunger member against the second plunger member. The second plunger member has a conduit between the second inlet and the first plunger member. The valve has a first home position that substantially prevents fluid from flowing therethrough. The valve has a second manual release position wherein fluid can flow into the first inlet and out the discharge outlet. The valve also has a third automatic relief position such that in the event a predetermined maximum fluid pressure is exceeded a gate will open between the first plunger and the second plunger member to allow fluid to flow from the second inlet through the valve and out the discharge outlet.

Abstract: A hydraulic tool for crimping connectors to electrical power lines includes a C-shaped crimping head which is infinitely rotatable with respect to the main body of the hydraulic tool for ease of positioning the tool with respect to workpieces. The invention particularly relates to the means for having a C-shaped head on the tool to achieve universal rotation while maintaining integrity of the hydraulic system across the rotational interface.

Abstract: A compression tool (10) crimps both cylindrical (12) and "H" type (75) connectors. The jaws (22) of the compression tool have a first part which is defined by a nib area in which there is a nib (44) on either jaw and a base nib (46) which is moved into the nib area by a yoke (36) which is in turn moved by a manually operated hydraulic section (18) of the tool. Operation of the hydraulic section causes the nibs to converge upon a connector placed therebetween to effect the crimp. Alternatively, a connector, e.g., an "H" type connector, may be placed in a second part of the jaws. The second part includes opposing "C" shaped sections which also effect a crimp in response to the hydraulic operation. Additionally, the tool is adaptable to receive dies (76 and 78) which allow customized crimping and cutting.

Abstract: An apparatus (10) and method for fabricating metal tubing of generally elliptical shape by cold pressing round tubing stock into the desired shape. The apparatus (10) includes a first pair of opposing dies (16 and 18) secured to the platens (12and 14) of a press for forming the substantially flattened sides of the tubing. A second pair of opposing dies, positioned substantially between and on either side of the first pair of dies, is provided for forming the substantially rounded sides of the elliptical tubing. Means (52) for providing a preselected rate of resistance to movement of the second pair of opposing dies as they are engaged by the substantially rounded sides of the tubing, such that the tubing can be pressed into the desired substantially elliptical shape defined by the die faces of the first and second pairs of opposing dies by operating the press to move the platens (12 and 14) toward one another, are provided.

Abstract: The seats, into which the "C" clips are inserted before being clamped, are located in parts of the free end-sections of the jaws situated above the support-plate extending beyond the other surface of the plate. Located under the latter is the thrust-plate for transferring the clips from the magazine to the seats. As a result of this arrangement, the thrust-plate may be located in the position of maximal advance towards the seats and its front edge acts as a stop to prevent withdrawal of the back of the clip when the latter is clamped between the parts of the free end-sections of the jaws. Movement of the jaws and displacement of the thrust-plate may be caused by alternate movement of rods from double-acting hydraulic-jack rods, or racks which engage pinions mounted rotatably but axially immovably upon the shaft and are released therefrom by means of a clutch controlled by an electromagnetic element.

Abstract: An adjustable crimping tool (10) is provided having a pair of indexable discs (18, 32) each of which carry a plurality of concave die cavities (18A-18F, 32A-32F) spaced about and opening to outer periphery thereof which can be moved into registry (FIG. 1) to define a selected size/shape of crimping cavity (C).

Abstract: A flaring apparatus including at least one of die member positional adjustment apparatus and a defective rim element ejecting apparatus. The positional adjustment apparatus includes a connecting shaft provided between a die member mounting block and a link mechanism for moving the mounting block. The connecting shaft has shaft portions, axes of which are radially offset from each other. By rotating the connecting shaft, the die member position can be adjusted. Therefore, there is no need to provide a shim between the die member and the mounting block. The defective rim element ejecting apparatus includes a pressure sensing switch which can detect an increase in pressure within a space defined by a rim element and the die members during flaring.

Abstract: A portable cutter/crimper that can cut or crimp stranded cable for bundling logs. A pneumatic air bag is used to close the jaws of a pair of crimping arms which contain matching arcuate cut out portions for the cable connector to be crimped. Prior to operation, the crimping jaws are held open by a spring. The crimping arms also have cutting edges adjacent to the crimping jaws for cutting wire. A frame and handle are provided which have a trigger to initiate expansion of the air bag during operation. The force of the expanding air bag is transmitted to the crimping arms by two connecting arms rotably connected to the crimping arms. The assembly is partially housed in an aluminum housing, and is relatively light weight for easier field use.

Abstract: A tool for crimping terminals onto the ends of electrical conductors so that a cross-sectional shape of a four-tipped star is obtained comprises in a pair of die carriers at least one pair of co-operating die elements, each die element comprising a central indentation and each pair of die elements further comprising at least two lateral cut-in portions so that a crimping space in the shape of star with four tips is obtained wherein the two indentations define two of the tips, and the two cut-in portions define the other two tips, extending transversely to the first ones.

Abstract: A method of manufacturing a valve rotor is disclosed which forms a hydraulic rotary valve as may be used in a power steering apparatus. A valve rotor includes axially extending grooves formed in its peripheral surface. Each groove is provided with chamfered portions. Each chamfered portion is formed with a first surface which continues to the sidewall of a groove and disposed at an angle with respect to the sidewall, and a second surface which joins the first surface with the arcuate peripheral surface of the rotor. The both surfaces are simultaneously molded by a plastic working.

Abstract: A tool for fastening the sinker to the fishing line with a pressing facility installed at its side wall portion of the container of sinkers for inserting the sinkers in the notches having been formed. In fastening the sinkers to the fishing line, those sinkers taken out of the container are placed in the notches and are fixed to the fishing line by fastening the pressing facility portion with hand by gripping it.

Abstract: Tooling connected to the punch pad and die pad bolsters of a progressive die operable as the contacts are being punched out to hug or impact opposite side edges of a contact and thereby form mounting and/or electrical energy transfer surfaces on the side edges. The tooling makes contacts having mounting sections with mounting surfaces which provide for improved mounting characteristics and which also may function as electrical energy transfer surfaces. The tooling makes contacts having retention sections, the retention sections having a pair of outboard arms and an inboard arm and which, when the retention section is inserted in a circuit board aperture, will be engaged by the outboard arms and function to prevent the metal of the outboard arms from being strained beyond the elastic limit and the outboard arms having surfaces formed by the tooling.

Abstract: A sheet metal corrugating apparatus provided with novel upper and lower corrugating die shoe assemblies which can simultaneously corrugate all corrugations in a single piece of relatively thick steel sheet to produce a relatively flat corrugated sheet within prescribed dimensional tolerances. Each of the novel upper and lower die shoe assemblies include a plurality of individually shiftable corrugating dies mounted upon a primary bed member in such a manner that they can shift towards and away from each other, guide bars fixedly mounted on the primary bed member between the corrugating dies, and springs extending between the guide bars and shiftable dies and which bias the corrugating dies apart to their greatest extent when the die shoe assemblies are in their open position.