Abstract: A pellet feeder (A) feeds pellets of vulcanized rubber or other materials and water or another fluid at controlled rates into a mixing tank (30). An agitator (32) mixes the pellets and fluid into a slurry. The slurry is pumped from the mixing tank to a mill (C) by a pump (34). The mill has a receiving region (70) defined between a stator (48) and a rotor (68) for receiving the slurry. The stator and rotor define a peripheral grinding zone (72) around the slurry receiving region. An impeller (74) has vanes which extend from the upper surface of the rotor to an abrasive surface (82) of the stator such that the impeller vanes are ground at the same rate as the stator and rotor wear to maintain a fluid seal around the impeller blades. Fluid cylinders (50, 52) maintain a constant pressure between the stator and rotor. The stator has a plurality of recesses (86, 86') which preferably have downstream extending relief areas (214).

Abstract: A pellet feeder (A) feeds pellets of vulcanized rubber or other materials and water or another fluid at controlled rates into a mixing tank (30). An agitator (32) mixes the pellets and fluid into a slurry. The slurry is pumped from the mixing tank to a mill (C) by a pump (34). The mill has a receiving region (70) defined between a stator (48) and a rotor (68) for receiving the slurry. The stator and rotor define a peripheral grinding zone (72) around the slurry receiving region. An impeller (74) has vanes which extend from the upper surface of the rotor to an abrasive surface (82) of the stator such that the impeller vanes are ground at the same rate as the stator and rotor wear to maintain a fluid seal around the impeller blades. Fluid cylinders (50, 52) maintain a constant pressure between the stator and rotor. The stator has a plurality of recesses (86, 86') which preferably have downstream extending relief areas (214).

Abstract: A heated wiper arrangement for windshields and like surfaces including an elongated backing member having means along the inner face area thereof to retainingly receive an elongated wiper blade longitudinally therealong. A heating element is closely associated with the backing member at generally the neutral surface or plane thereof for heating the wiper blade by conduction. Location of the heating element at generally the backing member neutral surface or plane prevents stresses from being applied to the element during bending of the backing member for accommodating the windshield surface contour. The heating element may be advantageously located generally along the backing member longitudinal neutral or moment of inertia axis as well as at locations spaced laterally outward therefrom in the neutral surface. Means may also be advantageously provided for protecting the heating element from natural and other corrosive elements.

Abstract: An improved battery plate comprises a grid or web of woven non-conductive material having lead metal or other electrically conductive material wires as some of the weft and possibly some of the warp threads. By alternately applying positive and negative active materials at laterally spaced locations across a wide web of such material and gathering portions of lead wires to form terminals, plate pairs are produced which are joined by a length of woven material of suitable strength for supporting the plates in a battery. Thus, pure lead metal wires may be used for improved electro-chemical properties, while simultaneously a great reduction in plate weight is achieved. A method of making such plates is also disclosed.

Abstract: A chart recorder writing pen of the kind in which the oscillating shaft of a motor drives an arm in a plane perpendicular to the shaft through a linkage causing the writing tip of the arm to move in a straight line; the writing device of the pen being an ink jet supplied with ink through a substantially rigid conduit having substantial portions on opposite sides of the axis of the shaft and being journaled on an axis colinear with the motor shaft axis.

Abstract: An improved battery plate comprises a grid or web of woven non-conductive material having lead metal or other electrically conductive material wires as some of the weft and possibly some of the warp threads. By alternately applying positive and negative active materials at laterally spaced locations across a wide web of such material and gathering portions of lead wires to form terminals, plate pairs are produced which are joined by a length of woven material of suitable strength for supporting the plates in a battery. Thus, pure lead metal wires may be used for improved electro-chemical properties, while simultaneously a great reduction in plate weight is achieved. A method of making such plates is also disclosed.