Abstract: An armrest of a seating structure has one end connected to a back through means such that the armrest pivots between a horizontal forwardly projecting arm support position and a storage position in which it is disclosed in a recess in a corner formed by front and side surfaces of the back. The pivot axis is so oriented that the armrest moves into a recess which is inwardly sloped because of a corresponding slope of the side of the back. The connection means provides for relative axial movement to allow the armrest to slide sidewardly outwardly during movement from the storage position to the arm support position. A radially extending pin in one member extends into an angularly and axially extending slot in another to obtain such axial movement in response to pivotal movement of the armrest.

Abstract: A convertible seat-bed is provided in which seat and back cushions are attached to frames which are supported from a linkage for movement between a seating condition in which the back cushion extends upwardly and rearwardly from the rear edge of the seat cushion and a bed condition in which body-engaging surfaces of the cushions are in a common horizontal plane. The linkage includes a front swing arm pivotally connected at its upper end to a back frame, a rear swing arm connected at its upper end and to the back frame through a short link and a link between the swing arms extending forwardly to the lower end of another link which is pivotally connected at its upper end to a seat frame and which is connected through a further link to the front swing are. The linkage operates to keep the rear edge of the seat cushion in close proximity to an adjacent edge of the back cushion in both conditions and is located below and behind the seat and back cushions.

Abstract: A swivel pedestal for a vehicle seat is provided in which a vertical tube is secured at its lower end to a base member and at its upper end is supported by a horizontal top wall of a housing, the tube receiving a tubular shaft rigidly secured to and depending from a rectangular mounting plate adapted to be secured to the other side of a vehicle seat. A brace plate is secured to the mounting plate and has a horizontal portion between the mounting plate and the housing top wall, with a cam portion for camming the upper end of a lock bar outwardly, terminating in a V-shaped notch receiving a V-shaped locking portion of the lock bar, the lock bar being pivoted at its lower end on a horizontal axis and being spring-urged inwardly, and an actuating handle being secured to the upper end of the lock bar. A stop is provided for limiting angular movement of the brace plate and for insuring alignment of the lock bar with the notch at the locking position.

Abstract: A set of matched golf clubs is provided, each including a shaft having a step at the junction between a smaller diameter lower portion thereof and a larger diameter upper portion thereof, both portions being of substantially uniform diameter. The step is located either at a uniform distance from the club head end of the shaft, preferably at about 8-1/2 inches, or at a distance increased slightly and progressively from the shortest club to the longest club, and the step is positioned more than 27 inches from the lower end of a grip on the upper end of the shaft and at least 27 inches from the upper end of the grip, with detectable means being provided on or within the grip at a distance of 27 inches from the step, such as an outward or inward formation on the grip or a concentrated weight within the grip.

Abstract: A storage system is provided in which digital numbers are read into a memory by periodically sampling a pair of analog input signals and in which the memory is scanned in timed relation to the signal sampling and also in timed relation to the scanning of a cathode ray tube screen in a raster pattern, the scanning spot being brightened when a stored digital number is detected.A pair of digital-to-analog converters are used both in sampling and for raster scanning. In sampling, the outputs thereof are compared with the input signals to control analog-to-digital logic circuits and the inputs thereof are connected through multiplexers to the output of the analog-to-digital logic circuits which operate as successive approximation registers. In raster scanning, the inputs of the digital-to-analog converters are connected to counter sections driven from a high frequency clock one being operative to develop a sawtooth signal to generate a sweep line and the other being operative at a field or frame rate.

Abstract: An open cycle external heat engine is provided which is of the reciprocating piston type, having compression cylinders separated from larger power cylinders; the heating of the compressed air being accomplished in an air heater with the compressed air never mixing with the heating gases, a heat exchanger being provided for recovering and recirculating the heat of the combustion gases.

Abstract: An X-ray unit is provided having a self-contained high voltage supply including a pair of capacitors charged through diodes from a pair of transformer secondary windings and connected in series through the windings to the anode and cathode of an X-ray tube. Switching means are provided for operation either in a first mode in which the alternating voltages across the secondary windings are in phase and in which the output voltage is equal to the sum of the DC voltages across the capacitors to be substantially constant, and a second mode in which the alternating voltages across the secondary windings are out of phase and in which they are added to produce a pulsating output voltage having a peak value which is approximately double that of the substantially constant voltage obtained in the first mode of operation.

Abstract: Teaching devices are provided which include a transparent element simulating a human head and movable elements simulating articulating organs such as a lower jaw, front and rear portions of a tongue and an uvula, such movable elements being connected to control rods which are manually operable to place the movable elements in positions normally used to produce particular sounds. In addition, elements of elastomeric material having spiral springs cast therein are provided and are operable through tensioned wires for simulating the larynx and lips and positions thereof. A cassette carrying an endless magnetic tape is insertable into a slot in the device and a reproducing head is positioned for cooperation with any selected one of a plurality of tracks on the tape to reproduce a sound corresponding to the positions of the movable elements.

Abstract: A method and an apparatus for packaging of ground coffee or a like material are provided in which an inert gas such as carbon dioxide is supplied to surround discrete quantities of the material carried in a longitudinally moving folded trough-like web of impervious material, the gas being supplied into a region in which the discrete quantities of material enter a sealing region in which portions of the folded web are sealed together ahead of, above and behind the discrete quantity of material. Important features relate to the covering over of the folded web to enclose a space therein as it enters the sealing region, to the guiding of the edges of the web to cause them to converge as they approach the sealing region and to the injection of the gas at an angle and with a flow rate and velocity such as to cause the gas to completely surround the material without displacing the material relative to the web.

Abstract: Conductivity measuring instruments are provided in which a test coil is supplied with alternating current and a detector responds to the voltage across the test coil to develop an analog voltage which is applied to a linearization circuit to develop an output voltage as a linear function of conductivity, the output voltage being applied to a digital read-out unit. As a function of conductivity, the analog voltage is single-valued, preferably with no more than a gradual slope change over a wide range of conductivity values. In one embodiment, a high impedance is provided in series with the test coil, the detector is a phase detector operated to respond primarily to the inductive component and linearization circuit is of a diode-function type. Alternatives are in the use of a phase-to-voltage type of detector and in the use of a digital type of detector and in the use of a digital type of linearization circuit.

Abstract: A magnetic testing device is provided in which a magnetic recording tape or paper is wrapped around the outside of a tubular pressure member of elastomeric material which is disposed between two circular end plates which form pole portions of a yoke having a central core extending between the end plates and having a coil wound thereon with a copper shield being disposed around the outside of the coil. The device is disposed in a pipe or the like and compressed air is supplied to inflate the pressure member and press the magnetic tape paper into intimate contact with the interior surface of the pipe while an AC current is supplied to the coil to apply a magnetic field to the pipe and to record a magnetic field pattern on the magnetic tape or paper.

Abstract: Educational system for facilitating the learning through the discovery and inductive reasoning process wherein expression means as to a set of interrelated concepts are divided into first and second groups on objects which are physically manipulatable to disclose any expression of the first group into adjacent relation to any expression of the second group, to provide a number of correct examples in which the objects physically mate and a number of incorrect examples in which they are in non-mating relationship physically, with the numbers of correct and incorrect examples being such as to enable the student to learn the interrelated concepts, without pre-instruction, and solely from the discovery and inductive reasoning process during trial and error manipulation of the objects and to facilitate the development of the discovery and inductive reasoning process itself irrespective of the subject matter of the concepts.

Abstract: A compact hood assembly is provided for use with griddles and other types of cooking range units which generate grease-carrying vapors. A vapor treating section overlies the rear part of a range unit to receive vapors into a vapor treating zone into which water is sprayed with grease-carrying water being collected in a trough, and a water treating section is disposed alongside the range unit and includes a tank receiving water from one side of the trough with the water being pumped from the tank to spraying means of the vapor treating section. Important features relate to the construction, disposition and operation of baffle means which extend downwardly and forwardly toward the trough means and which includes spaced vanes, the baffle means including one or more sections which are removable for cleaning and for access to the interior of the vapor treating section.

Abstract: A portable device usable with a fishing rod for selectively projecting or casting a fish lure outwardly to desired areas by means of stretching or retracting a flexible elastic or stretchable line or a stretchable spring, which is mounted on and connected to a fishing rod or pole, and which has a movable, slidable carrier or open ended slidably mounted container, which is connected to an end part of the elastic or spring, and which is adapted to be pulled back or stretched, and then released to cause the carrier or receptacle to snap forward to thereby project a lure from within the receptacle into areas in which the user desires the lure to fall.

Abstract: A seat-bed unit is provided in which at each end, first and second arms are respectively pivotal on a first stationary axis close to a floor and a second stationary axis behind the first axis and preferably spaced upwardly from the floor. The rearward end of a seat frame and the lower end of a back frame are pivotally connected to each other and to the upper end of the first arm, while a connection is provided between the back frame and the upper end of the second arm, preferably including a short link which is pivotally connected at its forward end to the back frame and at its rearward end to the upper end of the second arm. Preferably, a second link is provided between intermediate portions of the first and second arms with stop pins on the first and second arms engagable with the second link.

Abstract: The invention relates to a system and method of testing small cylindrical parts wherein a part is journalled for free rotation about a substantially stationary axis with one side of the part being frictionally engaged with a magnetic tape moved longitudinally to rotate the part and to transfer a magnetic flux pattern at the surface of the part to the tape. Important features relate to the provision of engagement means for obtaining non-skid intimate contact between the tape and the part, to the application of a biasing field to the tape at the area of interengagement between the tape and the part and to the manner of supporting the part.

Abstract: A spring-frame assembly is provided for seats or the like including a plurality of wire springs in horizontally spaced relation between a pair of horizontal tubular frame members in spaced parallel relation. A pair of clips are provided for each spring, receiving opposite end portions thereof and including hook sections extending over the frame members downwardly around the outside thereof and thence inwardly and further including retaining sections engaging over portions of the spring spaced inwardly from the end portions thereof. The springs are preferably sinuous springs pre-formed to assume an upwardly bowed configuration and to apply torques and forces on the clips insuring secure engagement of the clips with the frame members. The clips have a ribbed construction for increased strength with flanges to provide extended areas of contact with the frame members.

Abstract: Automatic balancing circuits are provided for non-destructive testing systems such as eddy current systems in which an unbalance of a probe circuit including a test coil produces undesired deviations from a null indication. Error signal components are generated from a probe circuit output signal, stored in storage means and then applied in a balancing direction to cancel the effect of the unbalance of the probe circuit. Preferably, the error signal components are generated by a pair of quadrature phase detectors and the storage means comprises either a capacitor or the combination of digital storage and digital-analog converter means. The balancing is performed either automatically, with a delay in the storage operation, or by operation of a switch means between a sample or null condition in which the error signals are stored and a hold condition in which the stored error signals are applied.

Abstract: A seat-bed assembly is provided including a pair of units in facing relation each including a seat and a back, the units being operable between a seat condition in which forward edge portions of the seats are spaced a substantial distance from each other with the backs projecting upwardly and rearwardly from rearward edge portions of the seat and a bed condition in which the seat sections are moved forwardly to position the forward edges thereof in contiguous relation and in which the backs are moved down behind the seats, the upper surfaces of the seats and backs being then in a common horizontal plane. An important feature is in the provision of an operating mechanism for each unit including pivotal arms pivotally connected to the back, first links pivotally connected between intermediate points of the arms and the rearward part of the seat and second links pivotally connected between intermediate points of the first links and the back.

Abstract: A remoistening adhesive composition based on high amylopectin, low amylose starch includes poly(vinyl methyl ether-maleic acid monoalkyl ester) in a preferred proportion of about 1.5-20% by weight of the composition, thereby providing improved quick tack and shorter bonding times. An adhesive sheet comprises a sheet of paper coated on one side thereof with the composition.