Abstract: A substantially flat but relatively thick sectioned sample protector is disposed within a closed and readily openable envelope. It has a sample holding pocket into which a fragile, relatively flat sample is disposed.

Abstract: An advertising leaflet has an attention-getting movable flap cut out from one of its sheets which is moved into raised position when the leaflet is opened by a slender activating strip which is cut out from the opposed sheet of the leaflet and has its free end glued to the flap.

Abstract: A municipal water supply system for providing potable water under pressure from sea water including a nuclear reactor heated boiler for raising the temperature of sea water to at least 250.degree. F and at superatmospheric pressure means for conveying the superheated steam to an expansion turbine, whereby the superheated steam drives the turbine while the temperature of the steam is reduced to about the boiling point of water at atmospheric pressure, a heat exchanger for condensing the exhaust from the turbine while simultaneously preheating incoming sea water to the system, and liquid pumping means driven by the expansion turbine for conveying the condensed water under pressure to a municipal distribution system. Additionally, means are provided for controlling the temperature within the boiler chamber by controlling the volume of incoming sea water.

Abstract: This disclosure is directed to an interlocking construction panel, which when interlocked with an identical panel, will present a smooth flat surface on one side, with a plurality of longitudinal integral channels projecting from the opposite side.

Abstract: An attachment for a power tool adapted to perform materials working or shaping operations by means of a rotatable working or shaping element thereof. The attachment has a base member adapted to be secured to the housing of the tool, adjacent the shaping element; at least one arm mounted on the base member and projecting therefrom; and a guide member mounted on the arm and movable relative to the base member to provide a variable guide which, in use of the attachment on a power tool, engages a surface of material to be worked or shaped and guides the shaping element of the tool in relation to that material.

Abstract: A process for making a removable cannula using a laser to make a longitudinal cut and a longitudinal score line in the cannula wall and the cannula made thereby.

Abstract: A process for preparing a heterograft substitute blood vessel comprises digesting a properly pretreated pig blood vessel with a digesting solution containing an animal proteolytic enzyme so as to retain collagenous and elastic fiber constituents substantially in the original state and substantially remove away other tissue constituents of said blood vessel than said two kinds of constituents, and then fixing the resulting digested blood vessel into a desired shape with a liquid fixing agent.

Abstract: A device for determining angle relationships of or between planes, such as in geological structures, having a first member having on a planar surface thereof a family of concentric circles indicative of angles from the range 0.degree. to 90.degree., the circles each being indicative of an angle that is the complement of the half-angle of a respective one of a family of notional right circular cones of equal height based on the surface concentrically of the circles and having a diameter corresponding to that of its circle; and means mounted on and extending across the surface, the means being rotatable with respect to the circles to permit correlation between (a) the angle of inclination of a plane in one direction as indicated by a circle and (b) the inclination of that plane in another direction, or another direction in which a particular inclination of the plane occurs.

Abstract: An internal combustion engine having at least one cylinder in which at least one piston is reciprocable; the air, or air and fuel, induction being by means of an inlet port giving rise to helical flow of air, or air and fuel within the cylinder. In one form, the inlet port is substantially tangential to the cylinder. The cylinder may have a pair of pistons therein movable in unison to adjacent top dead center positions wherein they define with the cylinder wall, an annular combustion chamber.

Abstract: A camouflaged aircraft, surface vessel, vehicle or the like comprising an aircraft having upper and lower surfaces and having a plurality of visually contrasting surface coatings thereon, the coatings having lines of demarcation therebetween the surface coatings comprising one light and one dark coating, the dark coating being on a major portion of the upper surface of said aircraft, the light coating being on a major portion of the lower surface of the aircraft, substantially all of the lines of demarcation of the coatings when viewed from the side of the aircraft generally paralleling the longitudinal axis of the aircraft, and substantially all of the lines of demarcation of the coatings when viewed from above the aircraft being generally diagonal with respect to the longitudinal axis of the aircraft and substantially all of the lines of demarcation running in substantially the same direction.

Abstract: An automotive vehicle body and frame straightening apparatus including an endless track member of generally rectangular shape and having arcuate corners, the track member being of substantially round cross section and having at least one portion of reduced thickness so as to be engageable by both a force applying unit and anchoring unit at the portion of reduced thickness, each of the units being slidably positionable to any point of the track member to provide great flexibility in the locations at which the force applying unit and the anchoring unit may be attached to a vehicle.

Abstract: A module for forming the side walls of a cavity resonance device comprises a metal extrusion shaped in cross-section to be of a rectangular U-shape. The walls forming the free ends of the U are provided adjacent each of their free edges with first shaped portions forming part of the extrusion and extending longitudinally therealong. At least one of the walls forming the U-shape module is provided adjacent each edge of the outer surface of said wall with second shaped portions forming part of said extrusion and extending longitudinally therealong. The first shaped portions and the second shaped portions are respectively designed so that the two first shaped portions of one module may respectively be slid longitudinally into to interfit with, the two second shaped portions of another module to connect such modules mechanically and electrically at each interfitting of a first and a second shaped portion.

Abstract: A pneumatic jack comprising a cylinder having a removable cover, an inlet for pressurized gas near the bottom of the cylinder, a piston having a resilient piston cup within the cylinder and positioned for vertical movement therein, the cover including a centrally positioned piston rod bushing and at least two laterally offset stabilizer rod bushings, the bushings extending above and below the cover, a piston rod secured to the piston and extending through the piston rod bushing, and at least two stabilizer rods also secured to the piston and extending through the stabilizer rod bushings, and helical springs surrounding each of the stabilizer rods and engaging the piston and the cover for urging the piston downwardly within the cylinder.

Abstract: A readily assembled and self-contained motorcycle rack assembly raises a motorcycle from ground level to a stored position on the carrying vehicle. A unique hinged socket connection and an adjustable contour bumper engaging assembly makes it possible to quickly install the rack. It has two inverted simultaneously operable ratchet type jacks which raise the rack assembly and coact with a retention bar to bring the motorcycle and rack assembly into a fixed locked position on the carrying vehicle.

Abstract: A bind-in insert of lightweight paper stock for use in magazines, catalogs and booklets, has a paper envelope and a narrow, elongated, and impermeable thickened binding strip section disposed along the edge to be bound, the binding strip being formed by folding over and gluing the edge portion of the insert.

Abstract: An automobile trunk lock which permits the trunk to be opened from outside or inside thereof. One end of a release arm is connected to a cylinder lock in the trunk lid and the opposite end extends through the latch release of a latch mechanism. A key is engaged with the inner terminal of the release arm. Actuation of the cylinder lock by a key or rotation of the interior key effects rotation of the release arm about its longitudinal axis to trip the latch release to disengage the latch mechanism and open the trunk.

Abstract: An adjustable tool holder for use on machine tools such as lathes or the like is disclosed and comprises a base member adapted for mounting on the machine tool and for adjustably mounting a tool holding assembly therein. The features of the base member and the tool holding assembly permit adjustment of a tool bit along X, Y and Z axes with extreme precision.

Abstract: A dispenser for soap or the like comprising a hopper having a lower discharge outlet and a rotatable metering device within the outlet including a plurality of circumferentially arranged chambers which sequentially communicate with the hopper and the discharge opening as they are rotated. The metering device includes a manually operated knob including a spring loaded detent extending rearwardly therefrom and cooperating with a plurality of recesses on the front panel of the hopper. A holder for a cup or the like is provided beneath the discharge outlet of the hopper so that the dispensed soap may be transferred to the washing machine.

Abstract: A method of producing bearing pulleys for conveyer belts and roller gravity conveyers in which the bearing pulley includes a cylindrical portion and common central pivot pins secured to the cylindrical portion by a hub or roller base, which comprises providing a cylindrical pipe of a desired bearing pulley diameter, tapering the end portions of said pipe in a truncated configuration by non-cutting cold deformation down to the diameter of the pivot pins, and subsequently inverting the tapered end portions of the pipe centrally within the cylindrical portion of the pipe a distance sufficient to provide the desired spacing between the ends of the pulley.

Abstract: A vignetting device has plural sets of matching vignetting plates which are accurately aligned and successively shifted to a central opening to block out different parts of the photograph area so as to permit fast and accurate preparation of special effect and composite prints.