Abstract: A torque wrench having a main body of fixed overall length and having a torque adjusting mechanism enclosed within the main body. The adjusting mechanism is controlled by a rotatable handle disposed about the main body. The adjusting mechanism includes a first part which is connected with the handle for joint rotation therewith, but which is constrained against axial movement. The adjusting mechanism further includes a second part having a polygonal portion extending into a polygonal recess in the first part to couple the first and second parts for joint rotation while permitting linear movement of the second part. The second part is designed to move linearly in response to joint rotation of the first and second parts in order to effect adjustment of the torque setting of the wrench. The handle contains a locking mechanism to prevent movement of the adjusting mechanism during operation of the torque wrench.

Abstract: Method for making polymer from a polymer emulsion. An extruder is provided with a screw rotating in a barrel. Means are provided for injecting a latex emulsion under pressure, directly into the barrel, and a polymer seal is formed at the injection point. Means are provided within the barrel for coagulating the latex emulsion upstream of the seal, and for providing a polymer seal and a pressure drop downstream of the seal, into a zone in which the screws are running less than full of polymer, whereby the polymer and the water separate in the spaces between the screws. The liberated water is taken off and the coagulated polymer product is continuously extruded and may be subjected to devolatilization, countercurrent washing, pelletizing and drying.

Abstract: Apparatus for separating a substantially insoluble liquid from a mixture containing a polymer or polymer mixture. The liquid is a vapor at the usual temperature and pressure of the polymer extrusion operation and is kept in liquid form by providing a high pressure region in the extruder. A liquid outlet is provided upstream of the high pressure region and the liquid is maintained under pressure and taken off as a liquid. The pressure restricting means may be a liquid outlet provided with a pressure control valve, trap or the like.

Abstract: Apparatus for making polymer from a polymer emulsion. An extruder is provided with a screw rotating in a barrel. Means are provided for injecting a latex emulsion under pressure, directly into the barrel, and a polymer seal is formed at the injection point. Means are provided within the barrel for coagulating the latex emulsion upstream of the seal, and for providing a polymer seal and a pressure drop downstream of the seal, into a zone in which the screws are running less than full of polymer, whereby the polymer and the water separate in the spaces between the screws. The liberated water is taken off and the coagulated polymer product is continuously extruded and may be subjected to devolatilization, countercurrent washing, pelletizing and drying.

Abstract: Means and method are provided for feeding through a feed port, to a plasticized polymer mass, a powdery material which contains entrapped air. An extruder is used having an entrance for feeding the polymer, and having a rotating worm, transporting the polymer from its entrance to a polymer exit; means are provided forming an entrance port for the powdery material downstream of the polymer entrance, and positive vent means are provided in the housing upstream of the powdery material entrance but downstream of the polymer entrance for drawing out the air, to prevent entrapped air or volatiles from fouling the powder feed port.

Abstract: Dilute polymer solution (about 5 to 50% by weight of solid polymer) is heated and flashed in a concentrator, is delivered to an extruder at a concentration of about 30 - 80% by weight of solid polymer, further solvent is vaporized and vented off, and the solid polymer material is subjected to counter-current fluid flow in single or multiple stages, with back pressure control at the polymer exit.