Abstract: An in-bin, controlled atmosphere, grain drying system has a storage chamber for holding a supply of grain or the like with a recycling duct leading from the upper end of the chamber back to a conduit for introducing air to the lower end of the chamber. A humidistat mechanism sensitive to the humidity of the air flow is provided. Also, a proportioning conduit portion has side-by-side inlets lying in substantially a common plane, one inlet connecting with the recycling duct and the other being open to atmosphere. A valve controlled by the humidistat mechanism is movable crosswisely relative to said inlets such as to admit more atmospheric air and less recycled air, or less atmospheric air and more recycled air, dependent on the humidity sensed by said humidistat mechanism.

Abstract: A method and a clip system for installing insulation on the purlins of a sheet metal roof construction is disclosed. The clip is of one-piece resilient construction and of a shape to be snapped over a portion of an insulating blanket and the upper portion of a roof purlin to snugly clamp the engaged portion of the blanket against the top and upper opposite sides of the purlin. The blanket is thus contained by the clips below the tops of the purlins so that a pocket suitable for the reception of an unfaced batt of insulating material is formed in the top of the blanket between adjacent purlins. The top of the clip may be provided with suitable means, such as adhesive or projecting barbs, for positively retaining a board of insulating material such as that sold under the trademark, above each purlin and retaining the board against movement during the assembly of overlying roof panels.

Abstract: Rectangular panels, such as standing seam roof panels, which have upstanding flanges or seam sections extending along two opposed longitudinal side edges are stacked in a nested relationship. Each panel in the stack is transversely bowed about its longitudinal axis to spread the upper edges of the upstanding flanges or seam sections apart by a distance sufficient to permit the next uppermost panel to be nested between the flanges or seam sections of the lower panel. A longitudinal support member is located under the longitudinal centerline of the lowermost panel of the stack to support that panel in its bowed position. The support member and panel stack are in turn supported on a rigid, flat support base, and straps passing transversely around the support base and panel stack bind these elements into a unitary package for shipping or storage.

Abstract: A standing seam roof panel joint assembly for standing seam roofs includes a pair of upstanding seam forming mating walls at the side edges of adjacent roof panels which may be interlocked and embraced by a cap strip. These walls of each panel are formed with opposed complementary pockets located substantially the same distance down from their upper ends, adjacent reversely bent contiguous wall sections which are embraced by the cap strip. Mastic or "hot melt" beads of predetermined volume are disposed in the pocket in each wall section, and distributed when the pockets are deformed during the seaming operation in which the seam forming edges are interlocked.

Abstract: An end lap seam construction for metal roof panels in a standing seam roof is provided wherein a continuous water-tight seal extends around the entire periphery of each panel. Mating factory installed mastic strips are employed to seal the standing side seams of adjacent panels. The end lap seam of the present invention incorporates a mastic tape which may be field-applied without any great degree of precision to mate with and bond to the side seam mastic strip of an overlapping mating panel.

Abstract: The machine of the present invention is an internal milling machine designed to mill the crank pins and crank arm cheeks of heavy crankshafts to precise dimensions. Positively locked clamping systems are employed to rigidly fix the headstock at indexed positions on the machine ways and to rotatively lock the chuck at rotatively indexed positions. Both clamping systems are capable of shifting the headstock and headstock chuck to a final precisely located indexed position as the locking members are moved into their locking relationship.

Abstract: The machine of the present invention is an internal milling machine designed to mill the crank pins and crank arm cheeks of heavy crankshafts to precise dimensions. By relatively simply substitutions of gage blocks, the machine is capable of milling crankshafts having a wide range of crankshaft throw and pin diameters. An internal milling cutter is mounted on the machine frame for operation within a general plane which is stationary with respect to the machine frame, the crank pins to be milled being axially and rotatively indexed in succession to a fixed position in operative relationship with the internal milling cutter. The crankshaft is supported at its opposite ends by chucks mounted in a headstock and a tail-stock which are rigidly coupled to each other by tie-rods for simultaneous axial indexing movement.

Abstract: A cam controlled contour turning, facing, and boring machine tool having a frame on which a first slide is mounted for reciprocable movements along a generally horizontal path and a second slide mounted on the first slide for movements with the latter and for lateral movements relative to the first slide either normal to or at an inclination of less than 90.degree. to the path of movement on the first slide. On the frame is mounted supporting means for one or more workpieces and on the second slide is mounted tooling engageable with the workpieces. The movements of the slides are effected by two cams, one of which controls the movements of the first slide and the other of which controls the movements of the second slide, the cams being rotated simultaneously by driving means mounted on the first slide.

Abstract: The machine of the present invention is an internal milling machine designed to mill the crank pins and crank arm cheeks of heavy crankshafts to precise dimensions. By relatively simple substitutions of gage blocks, the machine is capable of milling crankshafts having a wide range of crankshaft throw and pin diameters. An internal milling cutter is mounted on the machine frame for operation within a general plane which is stationary with respect to the machine frame, the crank pins to be milled being axially and rotatively indexed in succession to a fixed position in operative relationship with the internal milling cutter. The crankshaft is supported at its opposite ends by chucks mounted in a headstock and a tail-stock which are rigidly coupled to each other by tie-rods for simultaneous axial indexing movement.

Abstract: A long wearing mechanical seal assembly comprising two paired sealing members of predetermined composition wherein the contacting surfaces are in rotating relationship with respect to one another, and wherein the members cooperate to prevent fluid flow between the contacting surfaces, a first one of said members being composed of a material suitable for a seal seat (e.g., cast iron, alumina ceramic or chrome plated steel) and the second member comprising a seal composed of a graphitic matrix that is filled with particulate, non-abrasive matter (e.g. Nepheline syenite, alpha-alumina or quartz) which is harder than the matrix and which has a microhardness greater than the matric to prevent the seal from wearing at the wear rate of the matrix.

Abstract: A long wearing mechanical seal assembly comprising two paired sealing members of predetermined composition wherein the contacting surfaces are in rotating relationship with respect to one another, and wherein the members cooperate to prevent fluid flow between the contacting surfaces, a first one of said members being composed of a material suitable for a seal seat (e.g., cast iron, alumina ceramic or chrome plated steel) and the second member comprising a seal composed of a graphitic matrix that is filled with particulate, non-abrasive matter (e.g. Nepheline syenite, alpha-alumina or quartz) which is harder than the matrix and which has a microhardness greater than the matrix to prevent the seal from wearing at the wear rate of the matrix.

Abstract: A machine for assembling reels and the like having a conveyor adapted to transport a predetermined number of segments disposed in side-by-side relation to an assembly position, a pair of substantially circular guide frames mounted in substantially coaxial alignment transversely of the conveyor in the assembly position in receiving relation to segments borne by the conveyor, and a mechanism for retention of the segments in side-by-side relation and in engagement with the guide frames to cause the segments to assume a substantially cylindrical configuration within the guide frames.

Abstract: A grinding machine for grinding surfaces of workpieces supported on a frame comprises a first slide mounted on the frame for reciprocating movements along a fixed length path toward and away from the workpieces, the first slide supporting a second slide which carries grinding wheels. The second slide is adjustably mounted on the first slide for movements with the latter so as to effect movement of the grinding wheels into and out of engagement with the workpieces and for movements relative to the frst slide so as to compensate for erosion of the grinding wheels caused by grinding or dressing operations. The machine includes dressing tools for the grinding wheels and which are operable in timed relation to the reciprocating movements of the slides to effect dressing of the grinding wheels.

Abstract: A liquid level monitoring device operable either to detect leakage from a body of liquid or to detect deviations from a controlled rate of withdrawal from a body of liquid. The device employs a pressure responsive diaphragm which, in the face of unequalized pressures applied to its opposite sides, is operable to actuate a control switch. One side of the diaphragm is exposed to a constant pressure, which may be atmospheric, while the other side of the diaphragm is connected to an open ended probe submerged in the body of liquid. When employed as a leak detector, the device is set by opening a solenoid controlled valve connected across a diaphragm to equalize pressure at opposite sides of the diaphragm while the probe is submerged in the body of liquid.