Abstract: In a handcuff device of the double locking type having a latch with inclined teeth which allows the locking arm of the cuff to rotate about and enclose the wrist and hold the locking arm in place around the wrist and having a bolt behind the latch that is slideable under the action of an externally actuated drift pin over the latch to a locking position that locks the latch against the locking arm preventing movement of the locking arm in either direction. The unintentional movement of the bolt into its locking position is prevented by providing a restraining means--a spring loaded pin--that operates against the casing and the bolt to resiliently urge the bolt against the latch and against the spreading action of mating shoulders on the bolt and latch that cause the two to spread apart against the action of the restraining means as the bolt moves forward towards the locking position and the shoulders engage.

Abstract: A stamped and scored one piece push-in tear tab can lid has a beak embossed in the tear tab along with a finger or thumb push area to the rear of the beak. When the push area is depressed the beak tears the tab loose and rotates with the tab into the can, buckling at a hinge line between the tab and push area. As the user's digit applies pressure behind the opening and not over it as in prior constructions, there is little opportunity for the user's finger or thumb going into the opening.

Abstract: A draft inlet or control for admitting outside air to a fireplace comprises a conduit sized to be set in and through the brickwork of a fireplace, preferably in the rear wall. The end facing into the fireplace has a face plate with radially spaced openings therein over which is a finger or poker operable rotatable shutter having like radially spaced openings permitting closing of the draft inlet when the two sets of openings are out of register. In one design, the shutter is held in place by a top plate spot welded to flanges on the conduit and having a circular opening with a restraining lip stamped in the edge of the opening to hold the shutter. In another design, the end plate and shutter are cast of a metal such as case iron, aluminum or brass and are held together and to the conduit by suitable fastening means, a top plate not being required.

Abstract: A polyurethane RIM system has at least two molding stations. The reactants are brought to the mixheads as three separate streams. One stream contains the isocyanate, the second stream contains some of the polyol, the chain extender and crosslinker and a third stream contains additional amounts of the polyol, along with what additives might be desired. At each mixhead the proportions of ingredients are controlled to give an isocyanate index of about 100, but the ratio of one polyol stream to the other is regulated to control the flex modulus and other properties of the molded product as may be desired. In this way, one source of supply can be used to feed several molding stations, each of wich may produce a product of different physical properties and thus of different costs.

Abstract: A heating device generates heat by working a liquid in a closed container with a rotating stack of finely perforate square plates and recovering the heat from the thus heated liquid. In one embodiment a stack of a multiplicity of flat square plates radially offset one from another is rotated in an oil bath in a container under an inner perforate non-rotating cover over which is a similar non-rotating cover that is imperforate. The thermal energy developed through the mechanical working of the liquid is transferred to the main liquid bath and is then removed, as for example, by circulating air or a liquid around the outside of the container with the thus heated air or liquid being used to heat a house or the like.

Abstract: A pneumatic exercising device uses a lever arm operated by the exerciser which works against a pneumatic cylinder. The pneumatic cylinder is connected to a much larger reservoir, the pressure in which can be adjusted as desired by means of an auxiliary pump. The reservoir is contained in one of the support members for the exercise device. A preferred embodiment is a bench press wherein the height of the lever arm above the bench is adjustable by setting the height of the lever arm fulcrum on a vertical support therefor, which vertical support is hollow and contains the air reservoir, the pneumatic cylinder being connected thereto by a length of flexible hose. The air reservoir is preferably sized so that the pressure remains essentially constant as does the force offered by the lever arm.

Abstract: An improved polyurethane RIM process using a polycarboxy-functional alkyl siloxane as an internal release agent characterized by:(1) Tool break-in or preconditioning with siloxane treatment of the surfaces;(2) Supplying the siloxane to the mix head as a third stream when necessary to prevent undesired side reactions;(3) Using a minimal amount of siloxane that is inadequate for mold release in the absence of the tool preconditioning;(4) Adjustment of catalyst package to counter the inhibiting effects of the siloxane.The use of a bare minimal amount of siloxane prevents excess siloxane from appearing in the surface of the article and causing subsequent paint wet-out and like difficulties. The third stream isolating of the siloxane prevents its carboxy-functional groups from reacting with the prepolymer or with other ingredients that may be carried in the polyol blend.

Abstract: A device for extracting the stone of a drupe and simultaneously injecting a filling into the stone cavity comprises a claw member comprised of three to four hollow prongs through which a flowable filling can be injected. The prongs are adapted to be jabbed into a drupe such as a peach, to be closed about the stone thereof to firmly grip it, and to extract or tear the stone from the drupe while a filling is being injected via the prongs into the drupe.

Abstract: Marine shellfish, such as bivalve mollusks, are grown to edible size in surface-floating, partly submerged trays comprising a frame enclosed with a mesh having a size small enough to retain the species to be grown. A plurality of these trays are connected together in series and anchored in nutrient-providing water, such as an estuary, that while protected nonetheless is subject to wave action. These trays are attended by periodically flipping them over every two to three days and, if necessary, removing any fouling that may have built up on the undersurface. By means of this system, marketable-size oysters can, for example, be produced in fourteen months compared to the twenty-two to forty-eight months of other methods.

Abstract: A heavy-duty floor-cleaning machine for such work as cleaning encrusted diamond-plate catwalks in ship engine rooms comprises a housing on wheels spacing it from the floor with the housing containing a rotating cylindrical wire brush driven by belts by an electric motor mounted rearward thereof inside the housing. The shaft of the wire brush is mounted in manually adjustable supports that permit the wire brush to be lowered with respect to the housing as brush wear occurs. The electric motor also drives air impellers or fans that expel air and debris from the housing into a collecting bag in the manner of a vacuum cleaner.

Abstract: A method of manufacturing a segmented clog sole comprising the steps of forming a thick unit sole having a plurality of transverse slots on the mid sole side running across the width of but not through said unit sole, applying an adhesively attached mid and outer sole to the unit sole and then extending or cutting said slots completely through the outer sole and unit sole up to but not through said mid sole.

Abstract: A greeting card-calendar comprises a single folded sheet of card stock forming a front panel or cover over a back panel. The fold is on the vertical side of the card and the front panel is made to be manually removable from the back panel as by the fold being perforated. The front panel has an aperture. A calendar pad or like tablet is mounted on the back panel so that it can be viewed through the aperture. The calendar pad has a decorative top sheet which when the card is in the closed position is seen through the aperture in the front panel. The back panel is scored and/or die cut to permit it being folded into a triangular easel that mounts and displays the calendar pad.

Abstract: A handicraft device for winding strips of sheet material such as paper into tubes or beads with hollow cores comprises two upright members supporting a plurality of winding spindles each of a different diameter and having a finger operable crank handle at one end. A spindle may be removed by sliding it out of the upright. The uprights are fixed into a mounting means adapted to attach the device to the edge of a tabletop. In operation only one winding spindle of the desired diameter can be used at a time, the others being removed and set aside. The device is principally characterized by the fact that it is made of snap-together molded plastic elements.

Abstract: A single-stone containing fruit of the drupe family is laid open to permit removal of the stone and implanting of a filling, if desired, by centrally impaling it on a row of tines, every other one of which is held on one half of a split platform with the remainder being held on the mating other half of the platform such that when the split platform is forceably opened the fruit is torn open exposing the stone. The row of tines has tines of lesser length in mid-portion to accommodate the stone and an overhead moveable bar carries a mating row of tines that pierce the fruit above the stone. This bar can be carried on a strike arm adapted to engage a strike plate on one of the platform halves and force the platform to open when the bar is forced downwardly as by being struck smartly with the hand.