Abstract: A grip assembly and method for detachably mounting a chair, gondola or the like to a movable cable is disclosed. The grip assembly includes a movable jaw, spring biasing means coupled to bias the jaw to a closed position, and jaw actuating means in the form of opposed toggle joints coupled to move the jaw between open and closed positions upon the application of equal, opposite and aligned forces to knee portions of the toggle joints. A mechanism for applying the actuating forces to the grip assembly is also disclosed.

Abstract: A device for cleaning a paint roller which includes a cylindrical cylinder in which the roller may be suspended while it is still attached to its operating handle, and a nozzle fixed to direct a stream of water against the roller in a non-radial direction to wash paint from the roller while at the same time causing it to rotate on its axis to expel water and paint centrifugally.

Abstract: A surface grading device adapted to be towed over a surface to be graded, capable of self adjustment in accordance with a pre-established signal such as a laser beam, capable of grading cross sloping surfaces, capable of minimizing blade deflection caused by carrier wheels hitting a flaw in grade, and adaptable for highway towing along a single lane of a highway.

Abstract: A friction-based, motion damping assembly for a chairlift or the like is disclosed in which the damping assembly is mounted between a hub provided on a cable grip assembly and the chairlift hanger arm. The improved damping assembly is formed as a sleeve mounted to the hub of the cable grip with concentric rubber block members mounted around the sleeve. The hanger arm is formed with a collar having tapered surfaces, and an axially displaceable nut on the hub is used to wedge the rubber blocks into radial compressive engagement of the sleeve to generate the necessary compression of the sleeve about the hub for frictional damping.

Abstract: A vertical bulkhead is constructed for insertion in the interior of a cargo transporting vessel such as a truck, freight car, or marine cargo carrier to support the cargo during movement of the vessel. The bulkhead is constructed of any suitable stiff material and has positioned upon it a pair of pads or bearing elements at opposite edges disposed to frictionally engage opposite inner walls of the vessel. One of these pads is mounted on an adjustable mechanism disposed to move the pad horizontally and to lock it and consequently lock the bulkhead in a fixed position inside the vessel against the cargo.

Abstract: A box beam reinforced concrete and steel construction providing spaced apart wire mesh reinforced concrete skin walls and interior concrete supporting frangible sheets providing for solid concrete cores contiguous to and monolithically integrated with the skin walls.

Abstract: A tennis racket having string receiving holes in coaxial opposed pairs and having a slot in the throat between the bow and the handle through which the axes of holes pass so that strings can be pulled to the proper tension during stringing of the racket without frictional contact with the holes.

Abstract: A tool for cracking the shells of sea urchins, comprising a blade formed with central recess which enables the blade to penetrate the shell in the region of the mouth thereof without causing significant damage to the internal organs or roe of the sea urchin, and means for restraining the shell and for moving said blade laterally with respect to said restraining means to thereby open the shell. In its simplest form, the blade is formed at one end of one handle of a hand tool while the restraining means is formed at one end of a handle to which the first mentioned handle is pivoted to achieve said lateral movement of said blade. In a more sophisticated embodiment, the blade is mounted for vertical movement by means of a pneumatic cylinder and is arranged for lateral movement relative to the restraining means by means of a further pneumatic cylinder which operates when the blade is in the shell penetrating position.

Abstract: A device for securing together crossing re-inforced rods or bars, commonly referred to as rebar, and comprising a spring wire clip having a curved saddle-shaped mid-portion formed to seat on the posterior side of the vertical rebar, i.e., the side away from the horizontal rebar, and having a pair of parallel legs dimensioned to extend across the top of the horizontal rebar and curved in parallel vertical planes to provide concavities to receive, grip and provide vertical support for the horizontal rebar. The clip is formed for manual application in a one-handed operation.

Abstract: The subject is a carbon film, which consists of a transparent plastic film as base, a coloring, dark pigmented carbon layer, and a thin intervening layer located between the base and the carbon layer. Such a carbon film can be used as "carbon paper" or for the production of typewriter ribbons. The intervening layer contains synthetic lustrous pigments, color-doped as necessary, whereby the back of the film acquires an excellent coloring, without requiring a special covering layer for it.

Abstract: A floor buffing machine having a pivoted buffer plate holding means to keep the buffer flat on the floor as the buffing pad wears is improved by a drive which includes a pulley on a shaft journaled above and below a yoke to provide a pulley that is above both bearings and is therefore free to have a drive belt installed or removed without disassembling the buffer plate holding means.

Abstract: A multiple language electronic keyboard system is disclosed for generating and modifying musical note information. The system includes a plurality of manually activated switches arranged in a matrix of rows and columns with the switches sufficiently close to allow a single finger of the user to activate a plurality of switches in a single stroke. A decoder detects and distinguishes between a first language and a second language of distinct switch activation patterns. Musical note information is generated by a processor which receives information from the decoder concerning the location of each activated switch and the language detected by the decoder. The versatility of this system is further enhanced by the addition of envelope and tone generators and also by visual display devices. In the preferred embodiment the keyboard is arranged to positionally and operationally emulate a guitar fret board.

Abstract: The present invention provides a propeller or windmill blank comprising a planar sheet of material having markings defining, or being shaped to have, a central or hub region and two blades extending in opposite directions along imaginary lines; and wherein the blank has a marking or line of preferential folding inclined to the first mentioned lines which, when the blank is bent therealong, will result in pitch being applied to the blades.

Abstract: A cradle for an infant is disclosed which is collapsible and which provides several different rocking motions. The framework of the cradle is comprised of an outer frame with an inner frame suspended therein. The outer frame has an open position and a collapsed position and comprises two hoops connected at a first pair of pivots to pivot between the open and collapsed positions, the lower portions of the hoops serving as rockers. The inner frame comprises two U-shaped portions connected to each other at a second pair of pivots. The inner frame is connected to the outer frame at a third pair of pivots proximate the apexes of the U-shaped portions at opposite upper portions of the hoops equidistant from the pivots of the first pair, so that the inner frame can swing within the outer frame about the third pair of pivots. A collapsible receptacle is supported by the inner frame and oriented for side-to-side swinging motion about its longitudinal axis.

Abstract: In many branches of industry large quantities of small items (e.g., wire components) or assembly components are frequently required, which have a strong tendency towards entangling and which conglomerate in a pile. These components, termed entangled components, can be isolated only with great difficulty when required for processing. This invention provides a device for isolating such entangled components with relative ease. For this purpose, a horizontal disentangling plate (1) is provided on which the entangled components (7) are placed. A vibrating device (2) shakes the disentangling plate (1) in a reciprocal motion in vertical direction, thus enabling the entangled components (7) to become isolated.

Abstract: A physiologic analyzer is disclosed for continuous measurement of a subject's metabolic functions in which signals from ventilatory flow rate sensors and gas analyzers are processed to provide continuous measurement of the subject's ventilatory volume, carbon dioxide production, oxygen consumption, respiratory exchange ratio, and other metabolic functions of interest. An expiratory oxygen concentration sampler is enabled only when oxygen concentration deviates from the inspired value. When enabled, the sampler provides at its output a series of discrete signals proportional to successive instantaneous values of oxygen concentration in expired breath. A similar sampler is used in the processing of the carbon dioxide concentration signals. A respiratory cycle timer measures elapsed time between successive inspirations and provides a breath duration signal which is used for rate computations.

Abstract: Determining saturation vapor pressure of a hydrocarbon mixture by chromatographic analysis of the mixture, recording n-paraffin positions on said analysis establishing n-paraffin bisectors halfway between n-paraffin positions, determining the number of moles of compounds represented between n-paraffin bisectors by assigning the C-number of the n-paraffin between bisectors to all compounds between bisectors, determining the mole fraction of compounds between each pair of n-paraffin bisectors, determining the partial pressure of the compounds between n-paraffin bisectors by assigning to that mole fraction the saturation vapor pressure of the n-paraffin, and adding all partial pressures thus obtained.