Abstract: Automotive gas purifiers having a tubular core for conveying hot exhaust gases from an entrant opening to an exit opening in a hollow casing which surrounds the core, a plurality of transversely louvered openings in said tubular core and providing a plurality of small passages in said core means for passage of exhaust gases into and out of the annular space, a transverse wall dividing said annular space into an upstream segment and a downstream segment, a body of small catalyst particles for purifying said hot exhaust gases in said annular space of said upstream segment and surrounding said passages within said upstream segment, wrappings of fiberglass substantially filling the downstream segment of said annular space, said tubular core being a one-piece tube or a two-piece tube in which tubular core is divided into an upstream part extending from the gas entrant end of said casing to one side of said transverse wall and a downstream part extending from the opposite side of said transverse wall to the gas exi

Abstract: Track driven machines useful in slip form and other road paving operations embodying a support frame, with hollow frame members serving as cooling reservoirs for hydraulic fluid, supported by hydraulic cylinders on a pair of power driven, endless tracks. The frame is maintained in a pre-oriented plane as the machine moves along terrain by a hydraulic fluid control system operating cylinders in response to torsion bar-registered twist of the frame, string-line feeler means and a level controller. Two winches driven by respective hydraulic motors are mounted ahead of each track. Cables wound thereon may be attached to stationary objects to provide auxiliary forward drive(s) for each track, or in emergencies as the replacement drive for a disabled track.

Abstract: Machines for spreading wet concrete pavement and/or laying reinforcing rods in the spread wet concrete embodying a main frame movable along a subgrade for pavement by power-driven endless tracks, one or two power-driven, transverse, rotatable augers for spreading wet concrete laterally between slip form side plates and ahead of a height-adjustable strike-off blade or plate on the frame, said side plates optionally including plates projecting forwardly of the machine from opposite sides thereof, and a cross plate extending transversely between respective forward portions of said plates to define a three-sided enclosure into which wet concrete to be spread by said machine may be dumped, and a plurality of height-adjustable, side-by-side, substantially horizontal tubes extending in the forward-to-rearward direction and along the lower side of said three-sided enclosure at a level at which reinforcing rods, which pass through said tubes, are to be placed in the spread wet concrete, the rearward, exit ends of said

Abstract: Electro-mechanical, milk transfer systems which interlock the dairy farmer's milk holding tank agitator and the pump for drawing milk from the tank into a milk transport vehicle to preclude energization of the pump until the agitator has operated for a minimum, predetermined time; tamper proof circumvention-preventing devices to preclude by-pass of the interlock systems during milk transfer to the transport vehicle; and milk sample-taking units for automatically taking one or more samples of the milk being pumped into the transport vehicle.

Abstract: Expansion and cast-in retainer dam for sealing pavement joints against intrusion of water, dirt, etc., into the joint space, said dams utilizing a pair of rolled steel frames on opposite sides of the joint and a continuous elastomer strip spanning the joint and interlocked along its opposite edges in slotted openings in the frames by a bead of triangular cross-section on each edge of the strip.

Abstract: On-line samplers using a piston having its rod reciprocally mounted in a tubular member which reciprocates in a passage, at least the piston and its rod adapted to project out of said passage into the line in which fluid to be sampled is flowing. Upon return of the piston and the tubular member into the passage, a constant volume of sample between the annular faces of the piston and the tubular member is taken into the passage, from which the sample is discharged under positive pressure by moving one of said annular faces into substantially face-to-face contact with the other annular face.

Abstract: Apparatus useful in foundry moulding or casting embodying a turret having a lurality of arms rotatably mounted on and extending radially from a hub or drum rotatable about a vertical axis. The arms comprise a base, an inclined intermediate portion and an end portion parallel with the base. A fixed rack is disposed horizontally on the turret frame and extends along the arc of a circle in part of the zone swept by the arms during rotation of the hub. Each of the arms carries a pinion, whose teeth mesh with the teeth of the rack to induce rotation of each arm by 180.degree. to invert the mould or die carried on the end of the arm.