Abstract: A sheave knurling tool is adapted to knurl a sheave while carrying a belt and coupled to a drive unit for rotation. The sheave knurling tool may include a body, an arm, a jack, and a knurling wheel. The body is detachably coupled to a support structure of the drive unit. The arm is pivotally engaged to the body about a pivot axis. The jack is adjustably coupled to, and extends between, the body and the arm. The knurling wheel is carried by the arm, and the jack is constructed and arranged to pivot the arm toward the sheave thereby exerting a biasing force of the knurling wheel against the sheave.

Abstract: An article for texturing an electrode having a tip hardness and a tip contour is disclosed. The article includes a plate having an upper surface and a lower surface, and an indentation in at least one of the upper and the lower surface. The indentation includes a textured surface having a plurality of asperities. The textured surface has a hardness greater than the tip hardness of the electrode. The texture of the textured surface is imprinted into the tip of the electrode in response to the tip of the electrode and the textured surface being pressed against each other.

Abstract: A micro-roll forming device for providing a cylindrical blank metal article with a minute convexoconcave bearing surface, comprises a powered article holding structure that, when energized, rotates the cylindrical blank metal article about its axis; a forming tool that includes a form roller with a corrugated circular ridge; a tool holding structure that holds the forming tool in such a manner that the corrugated circular ridge of the form roller is directed toward and in contact with an outer surface of the cylindrical blank metal article rotatably held by the article holding structure; a biasing member that is incorporated with the tool holding structure to press the form roller against the outer surface of the cylindrical blank metal article with a given pressing force; and a powered moving structure that, when energized, moves at least one of the article holding structure and the tool holding structure in such a manner that the selected one moves in both a first direction perpendicular to an axis of the u

Abstract: Cold forming tool including at least one penetration zone having teeth and a calibration zone having teeth. The teeth having a tooth height that increases substantially from the at least one penetration zone to the calibration zone. A distance between an outer surface and a forming reference axis decreasing from the at least one penetration zone to the calibration zone. A rate of increase in the tooth height between the at least one penetration zone and the calibration zone being greater than a rate of decrease in the distance between the outer surface and the forming reference axis between the at least one penetration zone and the calibration zone. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: A knurling tool is provided having a tool head which carries at least one knurling wheel and which is mounted adjustably on a shaft, wherein the tool head is mounted on the shaft linearly displaceably transversely with respect to the axis of the shaft, characterized in that there is provided a fixing device for securing the relative position of the tool head and the shaft, the fixing device being arranged between the tool head and the shaft.

Abstract: A machine may produce a tube having textured internal and external surfaces in a single operation. Inner and outer knurling tools may form the textured surfaces. The texturing of the internal and external surfaces may be helical patterns of ribs and grooves. The height of the ribs formed in the internal and external surfaces may be less than about 35 mils. The angles of the patterns relative to a longitudinal axis of the tube may be less than about 45°. The angle of the helical pattern allows textured tubes to be used as heat exchanger elements wherein flow is directed substantially coaxial to the longitudinal axes of the tubes. The helical pattern formed in the external surface may be oriented in a right hand or left hand helical orientation. Similarly, the helical pattern formed in the internal surface may be oriented in a right hand or left hand orientation.

Abstract: A method and apparatus for knurling a workpiece in which the knurl pattern includes grooves of at least two different configurations. The apparatus includes a knurl wheel holder that allows angular rotation of the knurl wheel about the holder longitudinal axis while maintaining the knurl wheel point of contact on the longitudinal axis. The apparatus also includes a knurling wheel that includes teeth of at least two different configurations. Also disclosed is a method of molding a molded article with the knurled workpiece to impart the inverse of the knurl pattern onto the molded article, such a molded article, a method of forming a structured abrasive article with the molded article, and such an abrasive article.

Abstract: In a manufacturing method of a valve plate for a compressor according to this invention, a punch die 43 formed with a convex and concave configuration at its tip end face 42 is set at a press machine 41, and the punch die 43 is depressed against a surface of a valve plate 9 to transfer the convex and concave configuration of the tip end face 42. Thus, peripheral portions of a suction port and a discharge port of the valve plate 9 are roughened.

Abstract: A knurling tool comprising a tool head (1) which carries at least one knurling wheel (2) and which is mounted adjustably on a shaft (3), wherein the tool head (1) is mounted on the shaft (3) linearly displaceably transversely with respect to the axis (3a) of the shaft, characterised in that there is provided a fixing device for securing the relative position of the tool head (1) and the shaft (3), the fixing device being arranged between the tool head (1) and the shaft (3).

Abstract: A method and apparatus for knurling a workpiece in which the knurl pattern includes grooves of at least two different configurations. The apparatus includes a knurl wheel holder that allows angular rotation of the knurl wheel about the holder longitudinal axis while maintaining the knurl wheel point of contact on the longitudinal axis. The apparatus also includes a knurling wheel that includes teeth of at least two different configurations. Also disclosed is a method of molding a molded article with the knurled workpiece to impart the inverse of the knurl pattern onto the molded article, such a molded article, a method of forming a structured abrasive article with the molded article, and such an abrasive article.

Abstract: A method and apparatus for knurling a workpiece in which the knurl pattern includes grooves of at least two different configurations. The apparatus includes a knurl wheel holder that allows angular rotation of the knurl wheel about the holder longitudinal axis while maintaining the knurl wheel point of contact on the longitudinal axis. The apparatus also includes a knurling wheel that includes teeth of at least two different configurations. Also disclosed is a method of molding a molded article with the knurled workpiece to impart the inverse of the knurl pattern onto the molded article, such a molded article, a method of forming a structured abrasive article with the molded article, and such an abrasive article.

Abstract: A modular knurling tool is provided having a tool shank defining a first dove-tail connector and having at least one adjustment drive recess. Any selected one of a number of different knurling heads are adjustably connected to the tool shank by a second dove-tail connector, such that with the tool shank mounted in the tool support of a metal working machine, the knurling head is linearly adjustable along an axis that is oriented in normal relation with the longitudinal axis of the tool shank and in normal relation with the axis of the rotating work piece. A threaded adjustment member is positioned with a circular thrust element thereof located in rotatable relation within the adjustment drive recess so that rotation of the threaded adjustment will impart linear adjustment movement to the knurling head relative to the tool shank.

Abstract: A hydraulic compression tool comprises a frame and a first die and an opposite second die mounted on the frame. The first die is immovably connected to the frame and the second die is movably connected to the frame along a line of action and is positioned oppositely of the first die. The first die is positioned on the frame along the line of action of the second die. At least one of the first and second die has a work piece engaging surface which is disposed relative to the line of action at an angle other than perpendicular thereto.

Abstract: A method and apparatus for knurling a workpiece in which the knurl pattern includes grooves of at least two different configurations. The apparatus includes a knurl wheel holder that allows angular rotation of the knurl wheel about the holder longitudinal axis while maintaining the knurl wheel point of contact on the longitudinal axis. The apparatus also a knurling wheel that includes teeth of at least two different configurations. Also disclosed is a method of molding a molded article with the knurled workpiece to impart the inverse of the knurl pattern onto the molded article, such a molded article, a method of forming a structured abrasive article with the molded article, and such an abrasive article.

Abstract: A steel pin is disclosed of a type to be forcibly driven into a steel substrate by using a powder-actuated tool. The steel pin has a substantially cylindrical shank, and a substantially sharp point which extends from one end of the substantially cylindrical shank, which conforms substantially to a tangent or secant ogive except for a substantially spherical tip having a radius in the range of approximately 0.015 inch (approximately 3.75 millimeters) to approximately 0.03 inch (approximately 7.5 millimeters), which has substantially true concentricity, which has surface-texture irregularities with a roughness-height index value not greater than approximately 30 microinches (approximately 0.76 micrometers), and which appears to be substantially free of other surface imperfections when viewed under 60.times. magnification.

Abstract: A spring washer improves resistance to loosening of fasteners tightened thereon. The spring washer is stronger than prior art devices. On the upper and lower surfaces of the spring washer, approximately 1/5-1/4 of the width inward from the outer perimeter is formed without V-shaped grooves. The remaining flat portions are formed with V-shaped grooves in various patterns. These V-shaped grooves increase the coefficient of friction and resist loosening of the spring washer.

Abstract: Improved installation fins (28, 76) for window or door assemblies (88, 98) are provided which include structure (46) defining an elongated fold line (73) in the fins (28, 76). The structure (46) includes a plurality of elongated, discrete, parallel, aligned depressions (48) formed in one face (38) of the fin (28 76); the depressions (48) are oriented with the longitudinal axes thereof at an oblique angle of from about 10.degree.-40.degree. relative to the longitudinal axis of the fin (28, 76). The fins (28, 76) are preferably fabricated from aluminum, and the depressions (48) are formed therein by knurling.

Abstract: A method of manufacturing an elongated rail (12) with a C-shaped cross-section transversely of its elongated direction from a sheet metal strip (1) by bending marginal sections along each elongated side edge (2) of the strip at 90.degree. with respect to the surface of the strip. Effecting the bending action by discs (5, 6, 7). Next using a profiling disc (8) rolling a profiled surface into each of the side edges (2) and then after returning the marginal edges to their original thickness, bending the strip into a C-shaped cross section extending transversely of its elongated direction.

Abstract: Improved installation fins (28, 76) for window or door assemblies (88, 98) are provided which include structure (46) defining an elongated fold line (73) in the fins (28, 76). The structure (46) includes a plurality of elongated, discrete, parallel, aligned depressions (48) formed in one face (38) of the fin (28 76); the depressions (48) are oriented with the longitudinal axes thereof at an oblique angle of from about 10.degree.-40.degree. relative to the longitudinal axis of the fin (28, 76). The fins (28, 76) are preferably fabricated from aluminum, and the depressions (48) are formed therein by knurling.

Abstract: A machine and method for knurling an end portion of a cylindrical workpiece including a hypodermic needle or biopsy needle. The machine includes a base to which a reciprocating mechanism and a serrated block are attached. A pressure bar is positioned above the base and has a second serrated block attached thereto. The pressure bar is reciprocated back and forth, each movement comprising a stroke. A pair of lobes are attached to the top surface of the pressure bar. A pair of roller blocks are also attached to the base, each roller block having a rectangular opening and a roller located therein. The pressure bar passes through the rectangular openings. As the pressure bar is reciprocated back and forth and the lobes come into contact with the rollers, the pressure bar is biased toward the base whereby a knurl is formed in a workpiece placed between the two serrated blocks. A method for knurling an end portion of a cylindrical workpiece is also disclosed.

Abstract: A spinning-machine spindle rotatable about an axis has an upper cop-holding region and a lower nonsmooth reserve surface. The reserve surface is formed as a substantially uniform array of tiny pits separated by a raised continuous land extending as a continuous grid over the surface. Normally the pits are of pyramidal shape and the land lies substantially on a surface of revolution centered on the axis.

Abstract: A process and machine for automatically matching at least two substantially cylindrical surfaces for engaging each other, particularly for the purpose of mechanical embossment engraving. The ranges of freedom of a conventional machine are mechanized and subjected to an electronic control, providing a hardware structure driven by software. The software controls the starting, repetitive and final steps, automatically complying with spacing and timing. The operator's action is needed only for loading of the roll to be worked, setting the inherent knurling tool, setting the starting positioning, and starting the cycle, as well as, for removing the unfinished roll for the corrosion steps and of course for final unloading.

Abstract: The convertible bar-puller provides a convertible tool for automatic lathes. This tool has two main parts; a housing head and a shank. The housing head is attached to the shank using an adjustable connection means allowing the housing head to be positioned vertically with respect to the shank. The shank includes flat sides and radius corners to be received in either an internal tool housing or an external tool housing on the turret of the lathe. Positioning of the head on the shank in a first position fixed with the shank even with the upper end of the housing head adapts the tool for an external tool housing while fixing the head in the middle of the shank adapts the tool for an internal tool housing. Jaws for engaging the object to be machined extend forwardly from the head and have an adjustable jaw opening. The jaws each comprise a finger portion and an end portion, the end portion received in a circular groove on a jaw setting screw internal to the head.

Abstract: An apparatus, based on a conventional lathe, for the screening of ink transfer rollers including a rotatable screen forming tool rotably held above the ink transfer roller by a pivoted arm, is disclosed. The arm pivots about an axis parallel with the axis of rotation of the roller and to one side thereof with a damping device extending from the arm on a side opposite the pivot to a base. The base transverses along the lathe bed and rigidly supports a post to which the arm pivot is attached for adjustable height. The arm also includes a variable weight for adjusting the force of the tool upon the roller.

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 composite assembly knurling tool for forming uniformly-spaced horizontal serrations continuous across the surface of a metal flake producing drum is disclosed. The knurling tool comprises an alternating array of spacer and forming discs substantially conforming to the contour of the metal flake producing drum.

Abstract: An improved electrode and method for electroerosion machining both of traveling-wire type wherein an elongate element having a thickness of 0.05 to 0.5 mm is axially displaced to form a traveling-wire machining electrode therefrom. The traveling-wire machining electrode is juxtaposed with a workpiece across a machining gap flooded with a machining liquid issuing from a jet and a machining current from a source is passed between the electrode and the workpiece to electroerosively machine the latter. Gaseous bubbles formed by the electrical decomposition of the machining liquid tend to be adherent on the machining surface of the electrode and thus act as a thermal insulator between the electrode and the coolant machining liquid. The elongated element is formed with a rugged peripheral surface along a length thereof to facilitate the detachment of the gaseous bubbles from the machining surface of the electrode. Various ways of producing the rugged peripheral surface are described, e.g.

Abstract: A clutch is disclosed having an input shaft and an output shaft and having alternate pairs of discs interfitting with each other. Half of the discs being attached to the input shaft and half to the output shaft. The discs are knurled on one side in a grooved pattern. The knurling is deeper at the inner radius than at the outer radius so that there is a major restriction to oil flow from the inner radius to the outer radius. The restriction of the grooves insures that the grooves are completely filled with oil during operation of the clutch.

Abstract: A knurling tool has a planar face plate with an orifice for receiving a workpiece therethrough. Slide blocks are slidably mounted in opposing planar slots in the face plate. Each slide block has a slot with a knurl bit mounted therein so that the knurl bits extend into the face plate orifice for pressing against the surface of the work piece. An adjustment screw is provided to adjust each slide block longitudinally along the slot in which it is mounted and to provide a means of forcing the knurl bit against the workpiece surface. A clamping screw is also provided to clamp each slide block in its slot. A machine mounting apparatus is also provided for attaching the tool to a machine such as a milling machine, lathe, or other such machine.

Abstract: A knurling tool including an elongated body member having opposite ends and a bore extending therein from one end, the bore being spaced from and acutely angularly related to the axis of the body and extending in part through the side of the body, the bore having an enlarged portion intermediate the ends thereof, an elongated roller having an enlarged annular portion intermediate the ends thereof positioned in the body bore, with the enlarged roller portion being positioned in the enlarged bore portion, the enlarged roller portion being defined by an annular side surface angularly oriented relative to the axis thereof, and a pilot member cooperatively engageable with the body member and with the roller in position to trap and hold the roller in the bore.

Abstract: Apparatus for, and a process of, sector engraving metal elements, is disclosed. The apparatus includes an engraving roller having a particular pattern formed thereon, and a workpiece mounting system which is capable of translational movement within two mutually orthogonal directions. When the engraving process is to be performed, the engraving roller is held in contact with the workpiece, and as a result of a first translational movement of the workpiece mounting system in a first direction, a predetermined sector of the engraving roller is caused to contact a predetermined portion of the workpiece whereby a predetermined portion of the roller pattern is reproduced upon the workpiece.

Abstract: Disclosed is a machine for chisel forming the teeth on parts of revolution, and in particular wheels of cigarette lighters or the like, comprising a programmer whose drum is rotated permanently by a first linkage engaged with the drive shaft of the machine, a spindle receiving and rotating the workpiece to be toothed, means for holding this workpiece during the forming of its teeth, a device for storing and presenting the workpieces, a system for imparting rotation to the spindle and a chisel-holder striking device comprising a chisel fixed on a back-and-forth moving device keeping the chisel engaged with the driving means which require it, upon the striking of each tooth, to describe an imposed path causing it to penetrate forcefully, under pressure, into the workpiece to form the hollow of the tooth by working up the material.

Abstract: A knurling tool having three knurling wheels adapted to be positioned about a workpiece to be knurled and in which one of these knurling wheels is mounted on a movable block which is adjustably positionable against the workpiece. A quick release mechanism is included which will release the workpiece without affecting the relative working position of the knurling rollers.

Abstract: A centerless gear forming tool for cold rolling teeth on a gear blank in which the blank is inserted between a pair of gear forming rolls which are movable toward and away from each other. The rolls are urged toward each other by a spring, clamping the blank between them and are caused to rotate synchronously in the same direction. The gear rollers have lugs forming opposing surfaces which engage the blank when the gear rolls are rotated to an initial position. A latch initially holds the rolls apart so that the blank can be inserted between the rolls and clamped in position by rotating the opposing lugs into engagement with the blank. The latch is then released causing the blank to be also clamped between the rolls. Subsequent rotation of the rolls in the direction to move the lugs away from the blank operates to cold form the teeth in the blank under the pressure of the spring.

Abstract: The holder comprises a first section containing in one end a slot in which a single knurling tool is mounted to rotate about a first axis. The first section is integral with and offset from a second section of the holder, which is used to mount the holder on the cross slide of a lathe, or the like, so that as the tool is advanced at right angles toward the work, it will be held for rotation in the holder about an axis inclined approximately 30.degree. to the axis of the work, and will pass beneath and in tangential contact with the work to knurl the work surface as it passes transversely beneath it. Alternatively the holder can be mounted on a turret in an end working position for swinging movement transversely beneath the work.