Abstract: A multipurpose exercise apparatus has a pair of interchangeable lever arm assemblies which can be moved to provide a plurality of exercise positions. The apparatus has a frame with a seat on the frame and the lever arm assemblies are interchangeably mounted on opposite sides of the ends of the frame in various configurations to provide the exercise positions.

Abstract: Ceiling block construction comprising cast concrete bottom parts with planar walls and upwardly opening depressions for the selective reception of depending projections integrally formed with foam plastic top parts, providing an interlocking structure. A single top part can be of a size so as to overlay multiple bottom parts with depending projections engaged within the depressions of each of the multiple bottom parts.

Abstract: A quadrant impression carrier is provided with ribs bearing on the edge of a through aperture of corresponding shape provided in an occlusion table of an articulator. The impression carrier is thus hooked in the opening, which enables the articulator to be used for the production of small prostheses whereas, originally, such apparatus was provided for the production of complete prostheses, the small prostheses normally being executed on occlusors the arms of which are merely articulated and do not have several degrees of freedom in their movements.

Abstract: A device for heating or cooling a baby bottle or similar article by heat exchange with a thermal transfer fluid includes a container for holding the bottle in contact with the fluid, preferably water from a conventional faucet. The bottle is held on a platform above the bottom of the container and the fluid is directed to flow upwardly through the platform against the bottle.

Abstract: There is described a photomechanical method for forming pressure sensitive transfer reproductions of multicolor images upon a substrate involving the forming of a base coat protective layer on a substrate, applying one color ink on the base layer and a white ink overlayer on the color ink layer. The surface of the white ink overlayer is powdered and a layer of photoresist composition is applied. The photoresist covered layered substrate is exposed to a light source through an image carrying photographic negative film to harden the photoresist at the imaged areas forming a mask. Nonhardened photoresist composition areas along with their underlying layers are removed using stepwise solvent development steps. The steps are repeated for different colors with the final multicolor image being thoroughly dried and coated with a pressure sensitive adhesive to form the image transfer sheet. Drying between each step of formation is essential.

Abstract: A pressure and vacuum relief valve mechanism which can be installed in a vent opening in the top wall of a fluid storage tank. The valve mechanism includes a valve housing with a central bore therethrough. One end of the bore communicates with the vent opening to ambient atmosphere and the opposing end communicates with the interior of the tank above the stored fluid. A valve seat within the bore. A single, integral valve member is movable in the bore of the housing. The valve member has a valve component or head formed thereon cooperably engageable with the valve seat within the bore for relieving excessive vacuum in the tank interior. The integral valve member also includes a valve seat and a cooperating valve head for relieving excessive vacuum in said tank interior. These valving arrangements normally being biased closed.

Abstract: A magnet support and retainer for post-construction installed interior storm windows formed as a unitary plastic extrusion having a U-shaped pane-receiving portion, a rigid magnet mounting portion and a connecting portion, preferably flexible, formed therebetween. The magnet mounting portion includes an elongate rigid planar strip having a pair of depending edge flanges defining a cavity for tightly receiving a strip magnet of generally rectangular cross-section and an intermediate depending flange including barb portions adapted to be received tightly within a facing groove formed in the magnet. The opposite magnet face is engaged upon a ferromagnetic strip or sash surface for installation of the storm window. Resilience is afforded sufficient to compensate for irregularities in the pane or in the cooperating ferromagnetic surface when the storm window is installed. The magnet is force fitted in the cavity enabling easy assembly.

Abstract: A ballast circuit for starting and operating a preheat type circular fluorescent lamp, which replaces a multiple wattage incandescent lamp in a three-way incandescent lamp socket, so that the fluorescent lamp can be ignited to function at three different operating wattages. A lamination stacked core structure mounts first and second coils. A passive circuit element, such as positive temperature coefficient resistor also known as a thermistor, is connected in the circuit, which includes a three-way incandescent lamp screw base, for current switching functions to achieve the desired ignition and operating currents for the fluorescent lamp at its different operating wattages.

Abstract: A condensate drainage device for a steam system which includes a series-connected arrangement of orifice-type devices particularly suitable for relatively small condensate drainage capacity. The orifice-type devices are selected for installation in housings or bodies having advantageously placed heat exchanger fins which cooperate with the size of orifice devices installed for desired condensate drainage over a range of different steam system pressure and volumetric capacities requirements.

Abstract: A conveyor belt roller having a pair of opposed double tracks or threads formed on the surface thereof. Each pair of tracks spirals around the roller a plurality of times to provide a respective double helix pattern track running left and right from the midpoint of said roller. Each respective double helix pattern track commences upon the roller surface at starting points positioned 180.degree. apart about the circumference of the roller, and extends to the respective ends of the roller. The roller also is provided with interchangeable bearing and shaft housings for mounting at the respective ends of the roller to maintain the same in desired disposition during operation of the conveyor belt associated with the roller.

Abstract: A connector for memory cards includes a connector housing having an opening for receiving the memory card and at least one contact which contacts a connecting portion of the memory card inserted in the opening to connect the card to a computer circuit. According to the invention, the contact is arranged so as not to be in contact with the connecting portion of the memory card and there is provided a contact operating plate slidably movable in the connector housing to bring the contact into contact with the connecting portion of the memory card when the contact operating plate has moved toward said contact. The housing further comprises an operating lever pivotally connected thereto and having one end inserted into an aperture formed in the contact operating plate such that upon pivotally moving the operating lever, the contact operating plate is slidably moved in the housing.

Abstract: A process for producing pig iron from iron ore concentrate, in a reactor vessel into which iron ore concentrate, coal, oxygen gas and slag formers are injected beneath the surface of a molten iron bath. According to the invention, the ratio CO.sub.2 /CO in the waste gas (11) from the reactor (2) is increased to a value higher than corresponding to the condition of equilibrium at atmospheric pressure. As a result greater heat is generated in the bath for a specific coal amount. The injected amount of coal in relation to injected amount of concentrate is predetermined for finally reducing pre-reduced iron ore concentrate (4) in the reactor (2). According to the invention, CO and H.sub.2 in the exhaust gas is passed to a pre-reduction step (1), where unreduced iron ore concentrate is pre-reduced and thereafter can be injected into the reactor.According to a preferred embodiment, the reactor (2) is pressurized to cause the CO.sub.2 /CO ratio to increase.

Abstract: A control assembly comprises a housing; a control lever extending from the housing and pivotally mounted therein; spring means arranged in the housing and effective to return the control lever automatically to a neutral position; and a potentiometer for converting movement of the control lever relative to the housing from the aforesaid neutral position to an electrical signal. According to the invention, the spring means (4) comprises two mutually connected tubular parts (8,9), between which the end of the control lever (3) located in the housing (2) is mounted for pivotal, but not rotational, movement, wherein in the neutral position of the control lever (3) the longitudinal axis of respective tubular parts (8,9) extends substantially at right angles to the longitudinal axis of the lever.

Abstract: The invention relates to a method of securing simple codes (5), which are built-up of a plurality of lines, symbols or patterns, which are readable by a machine, and which codes (5) are intended to be located on documents (2), valuable documents or marked units.The invention is characterized in that in the generating or writing-down of the codes (5) one or more of said lines, symbols or patterns constituting the code (5) each are caused to transform to a line (11) or an area, which does not constitute a part of the code (5), but constitutes a part of a pattern, in order to render a falsification by altering the code after its writing-down substantially more difficult.According to a preferred embodiment the invention further is characterized in that a so-called line code (5) is generated, and in its generation or writing-down one or several of the lines associated with the code are caused to continuously or intermittently transform to a line (11) deviating from the line associated with the code.

Abstract: The disc, made of plastic material, is provided with a circular collar coaxial with its central hole and which is provided, diametrically opposed, with two arms bent at 90.degree., each arm terminating with a small tongue the end of which extends beyond the said central hole. These small tongues are intended to engage an annular groove provided in the shaft of the machine at the vicinity of its end. The radial displacements of the small tongues are effected during the deformations of the arms which, due to their elasticity, return the small tongues into position.

Abstract: Automatic food dispensing apparatus comprises a hopper (4), a rotatable cylinder (12) having a recess for receiving and dispensing a predetermined amount of food to a food container (40) in the form of a perforated metal rectangular container, the container being movable between a rest position, a first portion in which the container is disposed in a food cooker (26) for cooking the food dispensed in the container, and a second position in which the container (4) is held above a food dispenser (76) so that the food in the container is dispensed to a cup (76). The container (40) has a pivotable base (44) and spring clips (50) along one side which hold the base (44) in place. In the first position in the cooker (26), a spring metal strip holds the base in place and defines the lower limit of movement of the base. In the second position in the cooker, the clips (5) engage a metal bar (92) for releasing the clips and the base (44).

Abstract: A flexible connector includes a molded body of a soft material integrally molded with a connector body and connecting at least one cable, and locking screws passing through mounting lugs of the molded body and threadedly engaging internal threads of a mating device such as a receptacle. The connector comprises sleeves each fitted in the mounting lug and having an inner diameter larger than an outer diameter of a screw-threaded portion of the locking screw.

Abstract: A unitary pivot corner member having a separate pivot pin for engaging the sash balance of a double-hung sash window assembly and a slide guide integral with the member for riding in a guide rail of the master frame jamb of the window assembly. A pair of the same members are installed at opposing bottom corners of a sash window. Each of the slide guides rides in a guide rail and functions to retain the engaged guide rail in square alignment relative to the sash window whereby to eliminate gapping between the sash window and master frame jamb as the sash window is slided.

Abstract: A valve is mounted on a conduit from which it is desired to take a sample of the liquid which flows along the conduit. The body of the valve includes a through passage within which a needle valve member is removably inserted to close the valve. The body is provided, opposite said passage, with a collar in which is engaged the end of a rigid tube with a sampling vessel provided with a needle valve. Thus, it is possible to withdraw samples of the liquid into the vessel without any leakage of liquid and even without any emanation therefrom occuring, which is of the highest importance in the case of toxic or noxious liquids. Moreover, the device does not produce any dead volume of liquid which it would be necessary to purge before each taking or sampling of liquid from the conduit.