Abstract: This is a teaching machine in which in a teaching mode, a question and its answer are displayed and the pupil sets the answer for that question into a number of settable memory units. In the examining mode, when the same question is displayed, the pupil sets in what he thinks is the correct answer, and that is compared with the answer in the memory units.The apparatus can be reset for different questions.

Abstract: A universal transfer device for performing specific repetitive functions in an industrial environment and comprising a gripper arm means rotatably mounted on a suitable frame and capable of sweeping through a predetermined maximum radian displacement is provided with an intermediate stop means which can be actuated as required to limit said radian displacement in any given instance without a need to reset the maximum radian displacement. High degree of reproducibility of the path travelled by the gripper arm means in several planes is achieved by maintaining a positive force which urges the gripper arm means against a stop at the end of its movement in any particular plane.

Abstract: A strap dispenser is mounted for vertical movement on a frame from an elevated rest position to a strap dispensing position therebelow. The dispenser includes a coil of strap that is clamped by a hub, and upon demand for strap, the hub is permitted to fall from the rest position to transform the potential energy of the strap coil to rotational energy through a one-way clutch, which overcomes the inertia of the strap coil and initiates its rotation. When the demand for strap ceases, a mechanism is actuated in response thereto for positively holding the hub against rotation with respect to the shaft, and the inertia of the formerly rotating coil is utilized to return the hub mechanism to a rest position.

Abstract: Fractionation of liquid or solid mixtures of fatty acids is enhanced by a pretreatment which comprises whipping and maceration of the mixture to form a gas-entrained slurry. Preferably the whipping and maceration are carried out in the presence of air. During the pretreatment normally solid fatty acid mixtures are slurrified and the obtained slurry is filterable to separate liquid and solid fatty acid fractions therefrom.

Abstract: An iron holder is constituted by a U-shaped body of open-work material having a generally flat bottom and inwardly extending curved side walls adapted to enclose the iron while limiting engagement therewith to the edges of the sole plate, and a support is secured to the lower end of the body to carry a bracket which extends beneath the ironing board to secure the holder to the board with the body of the holder extending vertically above the board.

Abstract: In heavy mobil construction machinery such as backhoes, power shovels and boom cranes, wherein outriggers are extended for lateral stabilization, an automatically self-locking and self-releasing mechanism is provided to restrain an outrigger in its retracted inoperative position when not in use. The mechanism is operable in response to simple hydraulic actuation of the outrigger, and does not require manual operation or remote controls to effect locking or release of the mechanism.

Abstract: An animal food dispensing apparatus comprising a container with a bottom opening and an insert suspended in the opening. The insert is in the form of a sleeve open at its upper and lower ends. A vibrator is mounted within the sleeve and has a vibrating portion extending through the lower sleeve opening. The vibrating portion is attached to a food dispensing plate which extends across the lower sleeve opening and is spaced below it. When the vibrator is energized, food will fall from the edge of the plate.

Abstract: A method and apparatus are provided for separating fine oily particles from aqueous liquids at very high flow velocities by passing the mixture upwardly through an unconfined mass of oleophilic granules in a column with adequate velocity to separate and lift the individual granules into the upwardly flowing mixture within the column where movement of the individual granules serves to collect and coalesce the fine oily particles, and finally to release large oil drops back into the mainstream of the upwardly flowing mixture column. These large oil drops are then intercepted and extracted by a steeply inclined screen and caused to flow to storage in the form of a fine oil film propelled by the force of the flow of the aqueous liquid through the screen.

Abstract: A method and apparatus are provided for separating oily particles from an emulsion thereof in an aqueous liquid. The emulsion is passed through a bed of oleophilic granules supported on a foraminous support, the oleophilic granules, by virtue of their density, pressing against the foraminous support and the bed is unconfined downstream thereof so that the granules in the bed are fluidized by the passage of liquid therethrough. The oily particles are removed from the emulsion by the oleophilic granules in the bed, and the oily material accumulates and agglomerates and is transported out of the bed by the passage of liquid therethrough. The movement of the liquid then carries the oily droplets which are formed in the bed and deposits them upon a screen positioned downstream of the bed, the aqueous liquid passing through the screen in purified form. The oil accumulates on the screen and is propelled by the moving liquid into an oil reservoir positioned downstream of the screen.

Abstract: Monoethylenic monomers, including from about 1 to about 30% by weight of monoethylenic carboxylic acid, are placed in solution in a liquid mixture containing a low molecular weight polyhydric alcohol. This liquid mixture is dispersed in water and polymerized at an elevated polymerization temperature using agitation and in the presence of a free radical polymerization catalyst. The dispersion of polymer particles is then at least partially neutralized, preferably with ammonia or an amine to form an aqueous dispersion which is stable in the absence of emulsifying agent and which is useful in coating.

Abstract: New sealing adhesive bed compositions for glazing are form retaining and comprise elastomeric material initially mixed with plasticizers of low volatility and finely divided solids which either are of fibrous form or produce thixotropic mixtures with the plasticizers. A ratio range of from 3/4 to 21/2 parts non-volatile plasticizers to one part elastomeric material, and from 0.3 to 21/2 parts such finely divided solids to one part elastomeric material is present. Other kinds of finely divided solids and other ingredients may be present. The glazing strand is formed by extrusion, and the formed strand is not cured after extrusion. The tapes permanently deform under pressure when the glass is installed, have low spring back and exhibit little or no creep or cold flow in service.

Abstract: Marking dial in an electrically actuated nameplate marker is indexed by a ratchet gear means having two adjacent rows of gear teeth which are out of phase relative to each other. A solenoid-actuated detent plate is adapted to engage a gear tooth in one of the two rows of gear teeth in response to a signal from a rotary switch means, thereby positioning the marking dial so as to imprint a desired character. The rotary switch means is operably connected to an alphanumeric keyboard which completes a circuit to solenoids which actuate the detent plate.

Abstract: An improved adjustable cross frame member for use in a bed frame having side frame members and another such adjustable cross frame member. Each cross frame member comprises a pair of elongate elements including first and second perpendicular legs. One of the first legs has a plurality of longitudinally spaced position defining apertures corresponding to selectable positions of the cross frame member. The other of the first legs has a protrusion engageable with one of the apertures for retaining the elements against longitudinal movement in both directions when like legs of the elements are positioned in surface-to-surface adjacency. A locking means retains the elements against separation and includes a plurality of longitudinally spaced threaded openings in the first leg of the first element, each opening being associated with a corresponding aperture.

Abstract: The pulsations produced by a pulsating positive displacement pump are damped by interposing in the inlet line to the pump a conduit carrying at least one upstanding open ended tube having its lower end communicating with the conduit.

Abstract: A game table with a playing surface and cushion rail assembly surrounding the playing surface is disclosed herein. The playing surface has a plurality of lateral edges at least two of which merge to produce a right-angle corner which is adapted to fit in the corner of a room. A plurality of pockets are located on the periphery of the surface opposite the right-angle corner while the right-angle corner is devoid of any pockets.

Abstract: A sandwich bin for fast food restaurant service. The sandwich bin provides always open front and rear service openings and air curtains for each of the service openings. The air in the air curtains is recycled through chambers at the sides of the sandwich bin to beneath the floor from where it is recirculated through ducts and over heaters to be discharged through air curtain forming nozzles. The turbulence in the sandwich bin is at a minimum, thereby providing an atmosphere in which sandwiches will remain hot and moist, without significant drying.

Abstract: Vinyl esters, such as vinyl acetate, are copolymerized, especially with ethylene or maleate or fumarate diester to provide adhesives which develop water resistance through cure by including in the copolymer at least 0.5% of an N-methylol functional derivative of an allyl carbamate etherified with a C.sub.1 - C.sub.8 alcohol. The monomers are stabilized during the copolymerization by an hydroxy functional protective colloid.

Abstract: In a friction-fusion apparatus a solid state control circuit including a triac connected in series with an electric motor, and a control circuit connected across said triac including a resistor and a capacitor and a diac connected between the junctions thereof and the gate electrode of the triac. A voltage control circuit across the capacitor normally limits the voltage across the capacitor to an amplitude insufficient to trigger the diac and is operative in response to a manually actuated switch to increase that voltage, thereby triggering the diac and rendering the triac conductive to operate the motor for a selected time interval.

Abstract: Apparatus for harvesting, delimbing and cutting trees into sections is disclosed herein. The harvesting apparatus includes grapple means and cutter means on a mast which is supported on a boom of a vehicle. The delimbing and cutting into sections is accomplished with a separate frame that may be in the form of a trailer processor attached to the vehicle and positioned so that the mast and boom may be utilized for forcing the tree into engagement with a tree advancing mechanism on the trailer and the cutter means on the mast may be utilized to cut the delimbed tree into sections. The system is also designed so that the hydraulic circuitry for driving the vehicle may be used as the power source for the processor.

Abstract: A method of simultaneously producing a plurality of plural walled members by applying localized areas of adhesive to a first continuous web of one material, feeding a second continuous web of material in super-posed relation to the first web with the adhesive located between the webs, pressing the webs into engagement with each other to adhere the webs along at least some of localized areas of adhesive, severing the adhered webs along spaced lines to produce a plurality of plural walled members capable of being transformed into pouches.