Abstract: The valve assembly comprises a body formed of substantially identical, or identical plates, in which one is the mirror-image or reverse of the other. The plates are held apart, in parallel planes, by an enveloping seal. Each plate is ported for the conduct of fluid therethrough in cooperation with a fluid-conducting void formed in the confronting plate. Flapper-type valving elements are confined within the body, between the plates. A single, centrally-disposed fastener secures the plates and the assembly together, and constitutes the means for the simple disassembly of the unit.

Abstract: The compressor is formed of a simple, straight cylinder clamped between end headers by means of tie bolts. Confined within the cylinder are inlet valves--one at each end thereof--and inlet ports formed in the cylinder open onto these valves. A reciprocable piston rod carries a pair of spaced-apart discharge valves thereon. The latter valves, having annular bodies, have piston ring grooves formed thereabout, to receive sealing piston rings therein; too the discharge valves serve as the gas compressing pistons.

Abstract: The Device is a circular body which takes the form of a disc. It has a first plurality of apertures formed therein in which to receive the little, ring, middle and index fingers of a hand. Spaced apart from the first plurality of apertures is a second plurality of apertures in which to receive the thumb of the hand. By disposing the thumb, randomly, in different apertures of the second plurality thereof, with the other fingers in the apertures of the first plurality thereof, and straining to squeeze all the fingers and thumb, forcefully, toward the center of the body, the muscle which joins the thumb to the hand gets especially exercised. The Device is non-handed; it is usable with either a left hand or a right hand.

Abstract: The assembly, designed for use in combination with a straight-cylinder, gas-compression chamber, has a center bolt which is threaded at opposite ends thereof to receive a pair of valve sets. Each of the latter has a ported valve seat, valve guard, and ported valve plate. The guard is set about the bolt, and against a shoulder formed on the bolt therefor. The seat is centrally threaded, to engage one of the threaded ends of the bolt, and it and the guard confine the valve plate therebetween. In that one of the valve sets is turned 180.degree. from the other, i.e., the two guards being in confrontation, and the two seats remotely disposed, vis-a-vis, the one valve set is open to fluid flow, while the other is closed, as the assembly is reciprocated in such a straight-cylinder, chamber. Identical valve sets, on different, short bolts set in end closures of such a chamber, serve as gas inlet valves, while the reciprocable assembly carries the discharge valves.

Abstract: A time-delayed mechanism obstructs movement of a latchbolt from its latched position to an unlatched position. Linkage coupled to the latchbolt, and manually acutated (by a push pad, or the like), includes an arm which normally pivots, with the manual actuation of the linkage. An initial, limited movement of the linkage activates a switch, and the latter activates a time delay circuit component. The latter component, following a specified time delay, interrupts power to a solenoid. The solenoid, normally powered, has a bar inductively movable therein with a rod joined thereto for coincident movement. An end of the rod carries a roller which intrudes into the pivotal arc of the arm, preventing full pivotable movement thereof. Consequently, the linkage, which is to move the latchbolt to its unlatched position is blocked until the time delay has run its course, whereupon the solenoid is de-energized.

Abstract: The apparatus has a housing which slidably mounts a blade assembly for reciprocation thereof, fore and aft, perpendicular to the longitudinal axis of the housing, for the purpose of cutting shingle nails. The blade assembly slides upon a plate, which terminates in a series of juxtapositioned teeth, which lifts shingles to give the blade assembly access to the nails. A prime mover, an electric motor in the disclosed embodiment, drives the blade assembly in reciprocation through a gear train and cranks confined within the housing. Vibration-induced, free-flow lubrication for the blade assembly is provided by a lubricant reservoir and manifold mounted upon the housing.

Abstract: The universal assembly comprises components and parts interchangeable between, for being common to, a top latch and a bottom latch in vertical-rod exit devices. Simply by adding a few discrete parts to the assembly, the same becomes, selectively, a top latch or a bottom latch, The top latch, and the bottom latch, comprise the universal assembly to which the respective, discrete parts have been added. The assembly, and the latches have a rotatable input member with must be rotated to enable retraction of a latch bolt, and a limb operative to block retraction of a latch bolt if the input member is not rotated.

Abstract: The tool has a circular body, and an actuating lever pivotably coupled thereto. The lever, however, has two limbs, joined through a bight, and one of the limbs is fully nested in a recess formed therefor in the body. Consequently, one may grasp the tool about the body, whereat the one limb is nested, without turning the tool on, inadvertently. The other limb extends outwardly from the body, however, and by grasping the tool thereat, and depressing this other limb, the tool is turned on.

Abstract: The pin assembly comprises a piston or crosshead connecting pin which has a throughgoing, axial hole formed therein which is tapped at one end to receive a headed fastener. Radial bores are formed in the connecting pin which bores open onto the axial hole and also onto the outer surface of the connecting pin. Locking pins are slidably disposed in the radial bores so that, as a headed fastener is threaded into the tapped end of the axial hole, the head of the fastener forces the locking pins to protrude from the radial bores and engage an annular groove, provided therefor, in the piston or crosshead.

Abstract: The unit restores existing, masonry fireplaces without entailing dismantling of the latter. A heating jacket base, heating jacket, smoke chamber and flue lining are set into the existing firebox, smoke chamber and flue. Ducting is provided to move heating air through the heating jacket, and ducting is provided to pass combustion gases into the smoke chamber and flue. Internal air, or outside air, is accommodated in the unit for heating and combustion. Blowers are provided to move the heating air into the fireplace site (room) and/or to draw in outside air simply to exchange interior, stale air.

Abstract: The Compressor comprises three stages of compression, having three cylinders, each of the latter having a piston reciprocable therein. Two of the pistons are in-line along a common axis, and the cylinders therefor are in confronting relationship. The third cylinder lies along an axis which traverses the two-piston axis. All three pistons are reciprocated by two connecting rods, in that the in-line pistons are joined by tie rods. Both connecting rods are coupled to the single crank of a crankshaft which is journalled in a crankcase, and all three cylinders are removably bolted to the crankcase.

Abstract: In lieu of the customary concentric annuli upon which to receive a ported valving plate, the seat has a plurality of lands at a common radial distance inwardly from the periphery thereof. The separations between the lands, circumferentially, define additional, fluid flow paths which increase the efficiency of the plate valve in which the seat is employed. Too, as the lands are circumferentially non-continuous, unlike the known, concentric annuli, surface-tension adhesion of the ported, valving plate is greatly minimized.

Abstract: The system is designed to shut-off the flow of liquid in a conduit, unattended, i.e., automatically, in the event of a liquid conduit rupture, liquid overflow, or the like. A float which carries a mercury switch is set over a recess formed therefor and into which liquid can flow and collect. The float rises with the collected liquid, and the mercury switch activates a solenoid valve which is interpositioned in a pressured-liquid conduit, to halt the flow of liquid through the conduit. The recess is formed in a lowermost portion of an area in which the subject conduit is sited.

Abstract: A platform includes linear trackways which diverge and then lie in parallel along a given axis, and spaced apart. A plurality of flight bars, equally spaced apart, and lying traverse of the trackways, are movable along the axis and upon the platform. The bars engage rearmost, axial ends of juxtaposed, elongate products and push the products toward the trackways. Shoes supported above the platform, and lying above the trackways where they diverge, engage the products, as they are pushed along the platform, and force the products into and along the divergent trackways.

Abstract: The announcement is formed of one hundred percent cotton fiber paper on which, in colored ink, an inscription has been formed, and a lamination fixed over the paper and the inscription. Selected pigments are used to coat the paper, and polymers or an acetate is fixed thereon as a laminate. The paper chosen, having a starch surface sizing, a bases weight of from 19 to 21 pounds per ream of seventeen inch by twenty-two inch stock, a caliper of 3.4 to 3.7 mils, an opacity of seventy-eight to eighty-six percent, and a softening point of one hundred and sixty to one hundred and eighty degrees F., causes the colored ink to flow and fill-in, and stand out to appear to be a solid, printed image, when such coated paper is employed, and the noted laminates are fixed thereon. With even very limited reflected light, the announcement, and especially the colored ink inscription thereon, glows and shimmers, nearly simulating neon or other illuminated announcements.

Abstract: A decorative modular picture frame is described, in which the frame sections employed are milled at their opposing ends to accept corner bracket extensions in an interlocking and interchangeable relationship, so as to provide a construction characterized by the corner brackets becoming an integral part of the frame, affording both structural integrity and a decorative appearance according to individual user preference.

Abstract: The tool is formed of a pair of planar webs which are spaced apart, in a parallel disposition, and are joined, along common sides thereof, in a spine. One of the webs has a diagonal cutting edge formed therealong, and the other thereof is integral with an apertured tab which extends therefrom in an obtuse angle. The web with the cutting edge further has an upturned lip which closes into proximate interface with the other web. Ends of strapping are slid into the tool, after having been enwrapped about a crate, box, stack of lumber, or the like. The tool can be crimped, to secure the strap ends therein, or the strapping can be crimped elsewhere, for or aft of the tool. When the strapped crate, box, or whatever, needs to be opened, one has only to insert a tire iron, rifle barrel, or the like, into the aperture of the tab and, bearing against the tool with the end thereof, pull the cutting edge across the strapping to sever the same.

Abstract: The System is designed to shut-off the flow of liquid in a conduit, unattended, i.e., automatically, in the event of a liquid conduit rupture, liquid overflow, or the like. A float which carries a mercury switch is set over a recess formed therefor and into which liquid can flow and collect. The float rises with the collected liquid, and the mercury switch activates a solenoid valve which is interpositioned in a pressured-liquid conduit, to halt the flow of liquid through the conduit. The recess is formed in a lowermost portion of an area in which the subject conduit is sited.

Abstract: The seal, for use especially in non-lubricated, high-pressure, as compressors, in a one-piece, continuous sleeve which envelopes a reciprocable piston for sealing against the piston, or against the cylinder in which the piston translates. One end of the sleeve effects the sealing engagement, and the other end is spring-loaded to maintain the engagement. During operation of the compressor, or the like, it is the high-pressure gas which urges the seal into sealing engagement.