摘要:
An apparatus for forming and producing elongated threads or filaments of synthetic material such as fluorocarbon resins which can be used to form yarns utilizes, a turning machine having, a chuck assembly for mounting a billet of the fluorocarbon resin material therein, and a lead screw assembly with a tool holder assembly thereon. The lead screw assembly is disposed to move a cutting tool in the tool holder assembly longitudinally and parallel to the axes of rotation of the billet so that a plurality of cutting edges on the end cutting face of the cutting tool can cut simultaneously from the billet a corresponding plurality of sized, shaped and dimensioned threads or filaments which can be combined and formed into the desired yarn. Means are provided to synchronize the movement of the cutting tool with the rotation of the fluorocarbon resin billet.Additionally, the apparatus and method as above described wherein a plurality of spaced cutting tools are disposed for simultaneous engagement of the billet each adapted to cut threads or filaments therefrom.
摘要:
Method of making slabs of building material which can be used in place of slabs of compact marble are prepared by lining at least one surface of a mold with bonding material, introducing into the mold pieces of solid material to form an aggregate of individual pieces of said solid material with interstices therebetween, filling these interstices with bonding material which chemically bonds to the bonding material utilized for lining, allowing the bonding material to cure and harden to form a solid block of lined material, removing the solid block of lined material from the mold and slicing said block to desired size.
摘要:
Apparatus for molding curd in calibrated portions, a mixture of curds and whey, introduced into a hopper, fills perforated tubes in which the whey is separated from the curd and becomes compact. A plate closing off the base of the tubes retracts periodically and the curd drops abruptly by a predetermined height onto a subjacent plate, which is sliced by the first plate returning to its original position. The slices of curd are then transferred into one of the molds with a plurality of cells. This is applicable to the manufacture of cheeses of small size.
摘要:
A method and tool for making tapered, layered plastic toothpicks from a solid plastic slab wherein a rapidly rotating tool having a single cutting edge configured to simultaneously cut and roll a thin film of plastic into a toothpick of the desired shape with each complete revolution is brought into contact with the plastic slab at a predetermined angle.
摘要:
A machine is described by means of which a block of plastics material is cut in sheets forming a pile of sheets resting upon the remaining part of the block. A table carries the block past a band knife running in slits in a transverse supporting beam which is vertically adjustable. The band knife which forms an endless loop, runs in a slit along one edge of the beam, is twisted and returned through a slit in the other edge of the beam. The band knife cuts the block during each passage, back or forth, of the table.
摘要:
A predetermined volume of the face part of a segment of boneless fresh whole-muscle meat (e.g. strip loin, tenderloin, top sirloin butt, or ribeye roll) is positioned in engagement with a stop plate and constrained in a first shaping clamp of given cross-sectional configuration and thickness, and an additional part of the meat segment is constrained in a second shaping clamp of approximately the same cross-sectional configuration, with both shaping clamps solidly filled; cutting the meat segment between the two shaping clamps forms a steak or other meat portion of closely controlled volume and weight.
摘要:
A method of producing threads and fibers of synthetic materials uses a cylindrically-shaped body of the synthetic material which is allowed to rotate against a scratching tool and a peeling knife arranged to follow the scratching tool in the direction of rotation. The peeled-off curtain of parallel threads is stretched, possibly while being simultaneously heated, and possibly the threads are cut to form a staple fiber or are ground to a short-staple floccule. A device for carrying out the aforementioned method, has a turning mechanism, a foil-peeling knife secured to a carriage of the turning mechanism, and a scratching tool arranged to precede the peeling knife.
摘要:
A method of forming an imaging member consisting essentially of (a) preparing a photoconductive layer comprising a block copolymer which exhibits a lamellar morphology, said copolymer having lamellae of at least 2 phases, one phase comprising a photoconductive material and the other phase an elastomeric material, with said lamellae being disposed in a direction substantially normal to the horizontal plane of said layer and (b) placing said layer upon a conductive substrate.
摘要:
AN IMPROVED PLASTIC ANTI-FRICTION BEARING MATERIAL IS PRODUCED BY CUTTING, TURNING OR OTHERWISE SUBDIVIDING SINTERED POLYTETRAFLUOROETHYLENE PLASTIC MATERIAL FROM A SOLID BODY THEREOF, COLLECTING THE RESILIENT SHAVINGS OR CHIPS SO PRODUCED IN A LOOSELY-PILED INTERLOCK MASS THEREOF WITH INTERVENING INTERSTICES RESEMBLING A MASS OF EXCELSIOR, PLACING THIS MASS IN A MOLD IN ENGAGEMENT WITH THE SIDE WALLS OF THE MOLD. A POLYMERIZING LIQUID MIXTURE SUITABLE FOR PRODUCING A SOLID POLYAMIDE PLASTIC MATERIAL IS THEN POURED INTO THE MOLD, AND THEREBY FILLING THE INTERSTICES BETWEEN THE INTERLOCKING SHAVINGS OR CHIPS OF THE POLYTETRAFLUOROETHYLENE PLASTIC. ALTHOUGH THE LATTER ARE LIGHTER THAN THE POLYMERIZING LIQUID MIXTURE, THEIR INTERLOCKING ENGAGEMENT WITH ONE ANOTHER AND WITH THE SIDE WALLS OF THE MOLD PREVENT THEM FROM FLOATING TO THE TOP OF THE MOLD, SO THAT THE POLYTETRAFLUOROETHYLENE CHIPS OR SHAVINGS BECOME UNIFORMLY DISTRIBUTED THROUGHOUT THE INTERIOR OF THE SOLID POLYAMIDE BODY PRODUCED UPON POLYMERIZATION SUBSEQUENT REMOVAL OF THE SURFACE LAYER OF THIS BODY UNCOVERS THE SOFTER POLYTETRAFLUOROETHYLENE CHIPS FIRMLY EMBEDDED THEREIN. IN SUBSEQUENT USE, AS A BEARING ELEMENT, UNDESIRED PARTICLES OF FOREIGN MATTER SUCH AS GRIT OR METAL PARTICLES MERELY MOVE A SHORT DISTANCE ACROSS A POLYAMIDE PLASTIC AREA INTO THE NEAREST POLYTETRAFLUOROETHYLENE PLASTIC AREA INTO WHICH THEY IMBED THEMSELVES BECAUSE OF THE GREATER SOFTNESS OF THE POLYTETRAFLUOROETHYLENE PLASTIC, THEREBY RENDERING THEM HARMLESS.
摘要:
A flexible sheet material shaped article comprises a thermoplastic material having a plurality of spaced breathing apertures extending through the thickness thereof, each breathing aperture filled with a porous fibrous material. The flexible sheet material shaped article is formed by utilizing a vertical mold, and hanging a plurality of spaced strands of porous fibrous material from the top of the mold. The mold has a plan or cross-sectional shape corresponding to the shape of the article being provided. The mold is then filled with liquid thermoplastic material, and after cooling a slab of thermoplastic material with strands of fibrous material is produced. The slab is then sliced in a dimension perpendicular to the dimension in which the strands extend, and to the desired thickness to provide the flexible sheet material shaped article.