Abstract:
A plunge cutting device for plastic pipe (P), pipe couplings, plastic flanges (F), and other planar members includes a cylindrical body (10) including slots (17) formed therein, a pilot (20) for guiding the cylindrical body (10), and cutters (30) adjustably mounted in the slots (17), a canted relief (14a) can be formed in the cylindrical body (10) adjoining the leading wall (17a) of each slot (17) to facilitate ejection of out shavings. The pilot (20) may comprise a main pilot (40) and an auxiliary pilot (50) detachably connected to the main pilot (40). The auxiliary pilot (50) can be replaced with one of a different diameter in accordance with the dimensions of a pipe (P) being processed with the device.
Abstract:
A mandrel assembly (10) for use in a portable lathe apparatus for machining the end face of a hollow workpiece (12). The mandrel supports an orbiting cutting tool (18) which machines the end face (14) and defines a cutting plane. The angle of the longitudinal axis (40) of the mandrel and, consequently the cutting plane which is perpendicular thereto, is angularly adjustable with respect to the central axis of the workpiece. This enables the formation of a miter cut on the end of the workpiece. Complimentary hemispherical surfaces (Fig. 3 (70, 64)) having common centers located at the juncture of the cutting plane and the central axis of the workpiece allow the mandrel to be angularly adjusted in any direction.
Abstract:
The present invention relates to a clamping device for clamping a mandrel (28) to an elbow or pipe (18) as well as to a torque-reacting device between a power unit housing (14) and the mandrel. The torque reacting device has a pair of torque reacting keys (42) mounted in a non-rotatable portion of the power unit housing (14), each of the keys having an end portion with converging opposite sides (42a, 42b). The end portions of the torque reacting keys extend into correspondingly shaped, axially extending grooves (56) formed in opposite sides of the mandrel. The opposite sides (56a, 56b) of the grooves are outwardly diverging and define an included angle approximately equal to the angle between the converging sides of the torque reacting keys. Adjusting screws (48) are provided for each of the torque reacting keys. The clamping device has a plurality of clamping pins (62), each pin having a generally cylindrical shape with a hemispherical end portion defining a plurality of concentric ridges (64). An axially moveable actuating member (72) bears on a second end of the centering pins such that movement of the member along the longitudinal axis of the mandrel urges each of the centering pins into contact with the pipe surfaces.
Abstract:
Methods for targeting the release of an active pharmacological agent in an animal by administering that agent encapsulated in proteinoid microspheres which are stable to the environment encountered from the point of introduction until they migrate to the targeted body organs, fluids or cells and are there unstable. Orally administered delivery systems for insulin, heparin and physostigmine utilize encapsulating microspheres which are predominantly of less than about 10 microns in diameter and pass readily through the stomach wall and which are made of an acidic proteinoid that is stable and unaffected by stomach enzymes and acid, but which releases the microencapsulated agent in pharmacologically active form in the near neutral blood stream. Basic proteinoid microspheres encapsulating a dopamine redox carrier system are administered in the lower gastrointestinal tract, where they are stable, and then enter the blood stream, where the encapsulated agent is similarly released.
Abstract:
Un porte-outil pour des outils de coupe multiples est pourvu d'un dispositif a came (46) permettant le reglage precis de la position d'au moins l'un des outils (36) (par exemple un outil d'equarrissage en bout) par rapport a un autre outil (38) (un outil a chanfreiner). Le porte-outil est particulierement adapte pour etre utilise avec un tour portatif ayant un mandrin (60) s'etendant en travers du porte-outil.
Abstract:
A rotary pipe cutting apparatus (10, 60) for removing sections of broken pipe (14) from the bore of an outer pipe (12). The invention includes a cylindrical body (16) with a longitudinal slot (24) that is angularly offset from the rotational axis of the body and which is tapered in depth and width from top (26) to bottom (20). A blade (30, 76) is included on the body (16) adjacent the slot (24) and the lower end of the body, with the blade (30, 76) having cutting edges which extend both downward and radially outward from the body. A detachable and interchangeable guide member (32) is included on the lower end of the body, and stopping member (46) is included on the upper end of the body. A shank (48, 64) on the upper end of the body allows attachment of the apparatus to a rotary power tool.
Abstract:
The invention relates to a device for the machining of tube ends (1) comprising a motor, with a gear arrangement and a clamping device (17,18) for the fixing of the a tube end on the machining device (1) in order to be processed. The machining device (1) possesses a hollow rod (7) and a tool support with a tool holder, and is characterized by the fact that the motor and the gear arrangement are arranged next to each other and all other devices apart from the tool support, are encompassed by a housing, thereby forming a compact arrangement that is easy to handle and one in which the housing comprises a base surface which can be used as a support surface and facilitates handling of the unit. The tool holder is fitted with a cutting insert, designed as an indexable insert with at least two active cutting edges.
Abstract:
A portable tool for use in axially cutting and squaring ends of tubes includes a main tool body (5) within which is rotatably mounted a tool shaft (49) having a cutting tool (44) attached at one end thereof, a tube receiving and clamping unit (14) for retaining an end portion of a tube (165) to be worked upon, a mechanism (18) for shifting the tool shaft (49) relative to the main tool body (5) so that the cutting tool (44) can progressively engage the end portion of the tube (165) and a power drive unit (77, 73, 83) for rotating the tool shaft. The tube receiving and clamping unit (14) is provided with a plurality of circumferentially spaced ports which provides viewing access to a cutting zone, enables adjustments to or changing of the cutting tool and permits chips cut from the tube to be readily removed from within the tool. The shifting mechanism (18) includes a camming arrangement (19, 180, 188, 198, 199) that ensures smooth shifting of the tool shaft (49) and which is designed to minimize the ingress of foreign matter into the tool.
Abstract:
The invention pertains to a process and device for chamfering a clamped pipe end to close positional and dimensional tolerances as to the inside or outside diameter of the pipe (1). In a rough-machining step with a machine tool (21) set to the pipe diameter the chamfer is produced up to the machining allowance for a subsequent finish-machining step, and in a finish-machining step the chamfer is applied to close positional and dimensional tolerances as a function of the inside or outside diameter determined by the run of a tracer (22) over the circumference of the pipe.
Abstract:
A cutting tool for pipe nipples including a body (10) which can be passed over the nipple and a clamping means (14) whereby the body can be retained on the nipple and a cutting head (42) having forwardly extending teeth (43), the cutting head being mounted on a shaft (45) which is adapted to be connected to a drill for rotation thereby so that the end of the nipple (30) can be removed by the teeth (44) leaving a required profile.