Abstract: A device for susceptibility testing of microorganisms comprising a transparent, sealable container (1), a rectangular carrier (3) coated with a growth medium, a sealing arrangment (2) for sealing the container (1), and a rectangular, transparent, non-porous, inert test strip (4) optionally provided with a grip. Two antimicrobial substances separated by a substance-free zone are applied on one side of the strip in concentration gradients exhibiting maxima and minima. On the other side of the test strip is a scale for direct reading of the susceptibility the above-mentioned concentration gradient(s) being pre-defined and adapted to the reading scale.

Abstract: A composite reflecting mirror for a headlamp comprises a plurality of paraboloidal columnar reflecting surfaces, the reflecting surfaces having their respective focal points fall on a horizontal line extending through approximately the axis of symmetry of the mirror. The composite reflecting mirror is laterally substantially divided into three portions, i.e., a left end portion, a right end portion and a central portion. The relationship of the average value of the focal lengths of the plurality of paraboloidal columnar reflecting surfaces included in the respective portions is such that the average value of the focal lengths of the left end portion is greater than that of the central portion, and the average value of the focal lengths of the right end portion is greater than that of the central portion.

Abstract: A disposable heat storage unit comprises a hermetically sealed, heat conductive pouch containing a quantity of a latent heat substance which may be preheated to an initial temperature higher than that of its heat of fusion so that, upon cooling, it releases first its sensible heat followed by the release of the heat of fusion at a constant temperature over a sustained period of time. The unit may be placed in a container within which is positioned an article whose temperature is to be maintained at an elevated level.

Abstract: A barometric damper includes a swingably mounted damper blade having a first adjustable counterweight assembly lying in a common plane with the damper blade and mounted for rotation therewith. The torque arm mass loading can be varied. A second adjustable counterweight assembly coupled to the damper shaft adjusts the static control point of the damper.

Abstract: A method of gas ignition comprises energizing a permeable, porous electric heating element to an appropriate temperature for igniting a gas, and allowing the gas to contact the heating element.

Abstract: A portable cooking device having a centrally disposed burner, with utensil support members having short horizontal arms to hold small cooking utensils above the burner as well as having a shoulder configuration to hold a large pot. A removable annular retaining ring encircles the pot to prevent it from sliding. The burner has channels in the inner wall of the burner body to provide better burning of the fuel mixture.

Abstract: A food warming apparatus is provided with a cabinet defining a food treatment space and a food storage space above the food treatment space and in communication therewith. A wall at the bottom of the food treatment space supports a supply of food. Structure is provided to gain access to the food storage space to introduce a food supply and separate structure is provided to gain access to the food in the food treatment space for removal of the treated food. Heat is directed in a circulating path upwardly through food at one portion of the treatment space and downwardly through food in another portion of the treatment space.

Abstract: The disclosed gaseous fuel torch apparatus is adapted for use in cutting, welding, heating or other such operations involving the heating, cutting, or fusing of either metallic or non-metallic materials. The apparatus includes a fueling module for supplying gaseous fuel to a torch at an elevated pressure from a relatively low pressure gaseous fuel source, such as a natural gas supply system for example. The fueling module also preferably includes a selectively-operable alternate system for supplying such compressed gaseous fuel for other applications, including the recharging of one or more storage vessels for example. The fuelilng module includes features by which its gaseous fuel discharge pressure can be infinitely varied and preselectively adjusted within the capabilities of the fueling modules's compressor device.

Abstract: A portable hair roller heating device for heating flexible hair rollers, includes an enclosed heating chamber defined by a top wall, side wall and bottom wall, the top wall having a plurality of apertures through which the hair rollers to be heated can be inserted; a cover hingedly connected on the top wall so as to cover portions of the hair rollers extending through the top wall; first and second burners positioned adjacent the heating chamber, the first burner having a first burner tube with a free end and the second burner having a second burner tube with a free end; a single junction tube joining together the free ends of the first and second burner tubes, the junction tube having a free end extending into the chamber for heating the same; a fuel supply cartridge which supplies fuel to the burners and which controls the flow of fuel from the cartridge, the cartridge including a fuel supply valve; an ignitor assembly for igniting the fuel escaping from the free end of said junction tube; and a plunger whi

Abstract: A device for simultaneously performing multiple biochemical or immunological reactions. A manifold plate rests atop a waste fluid collection chamber or receptacle suitable for attachment to a vacuum pump. The manifold contains a series of wells that serve as reaction vessels. The sides of each well are fluid-impermeable, and its lower end provides a planar, annular base. A hydrophobic membrane is sealed to the lower surface of the base of each well. The membrane is formed of a material through which fluid can be drawn upon application of vacuum while retaining the fluid within the well in the absence of vacuum. By placement of a solid-phase support for binding biological coreactants atop the membrane prior to initiation of the reaction, solid-phase reaction products can be collected when vacuum is applied and can then be freely withdrawn from its well.

Abstract: A flashlight comprises a battery housing component and a lamp housing component, both with peripheral walls of elliptical cylindrical shape having, respectively, the same major and minor diameters, and terminating at one end, respectively, in a circular edge that lies in a plane that is oblique to the axis of the cylindrical wall by a selected angle A and includes a major diametrical chord of the ellipse of the walls. The minor diameter of the ellipse of the peripheral walls of each component is equal to the cosine of the angle A times the major diameter. The housing components are joined together with their circular edges meeting for rotation of the lamp housing component on the battery housing component, thereby permitting adjustment of the direction of the light beam relative to the axis of the battery housing component.

Abstract: A portable heater comprising a double-wall vessel which forms a combustion chamber and encloses a suitable fuel. Air passages provide an airflow through the vessel for supporting combustion. Also included are endless conduits which entrap displaced fuel to prevent it from escaping from the heater through the air passages. Thus, fuel is prevented from escaping from the heater in all positions of the same in the event that the heater is dropped or otherwise upset. A set of cooling fins, encircling a fuel holder, cool the fuel to help maintain an even burn rate. The heater further includes an adjustable flame attenuator for selective heat control. At a low heat setting the invention may be used as a personal or close contact heater wherein an outer wall serves as a guard for preventing contact burns. A modified embodiment of the heater, for use in a tent, includes an air intake tube and a fuel for exchanging gases with the outside of the tent.

Abstract: A training mannequin which exhibits many of the tactile sensations of a real human body to a student. The mannequin includes an anatomically correct human skeleton including a skull, a jawbone and a spinal column which together define a throat cavity. An anatomically correct larynx and its associated trachea are disposed in the throat cavity. A plastic skin covers the mannequin and a plastic packing material is utilized between the skin covering and the skeleton. An inflatable member is disposed in a chest cavity defined by ribs and the spinal column of the skeleton. The inflatable member substantially fills the chest cavity when inflated. An air pump is in fluid communication with the inflatable member to inflate the inflatable member. A student can insert a sharp instrument, such as a needle, through the skin and into the larynx, or between the ribs and into the inflatable member to deflate the member.

Abstract: An omelet pan consisting of a pan having a handle, a spatula for the pan, the spatula normally resting in the pan and having a handle, the handle of the spatula being rotatably affixed to the handle of the pan so the spatula can be rotated with respect to the pan.

Abstract: The invention relates to a motor vehicle lamp with several light bulbs. The light bulbs are electrically connected by cables with a multiplug connector disposed at the casing of the lamp. The multiple plug connector comprises contact parts produced from sheet metal strips and provided at the center region with an attachment means. The contact parts are formed as flat plugs at one end section while the contact parts are provided at the other end section in each case with a protruding bent off flag. The clamping jaws of a cutter clamping device generated by a slot are set in the flag. The slot runs in the direction of the longitudinal extension of the contact parts. The contact parts are inserted with the flat plugs in slot-shaped openings and are sequentially disposed in a plane with their wide extension at a distance from each other. The neighboring contact parts in a row are rotated by 180 degrees relative to each other about the longitudinal axis.

Abstract: An induced draft stove has a housing in which a food-supporting grate is disposed above a solid fuel-supporting grate. Burning solid fuel within the stove creates an induced flow of ambient combustion air to the fuel which is sequentially drawn into a pair of manually dampered inlet plenum boxes carried by the housing, through an air supply manifold, and into the open ends of a laterally spaced series of horizontally extending air delivery tubes which are removably positioned within the housing beneath the fuel grate. Combustion air entering the tubes is drawn downwardly through bottom outlet openings therein, flowed upwardly along lower exterior surface portions of the tubes, through the spaces between adjacent tube pairs, and then upwardly to the burning fuel. Upper side portions of the tubes shield the bottom outlet openings therein to prevent ash and other fuel bits falling from the fuel grate from clogging these outlet openings.

Abstract: This invention is an attachment for installation along a flue duct between a heater and a chimney, including a flue duct section, having a jet tube therein, receiving air from an exterior motor-driven fan, so as to create a vortex and a third stage burner at the jet tube end.

Abstract: In a flashlight, the bulb is attached to a bulb-holding frame within the body of the flashlight instead of to the reflector. The bulb-holding frame has a mounting member with an inner diameter larger than the base of the bulb but smaller than a flange formed on the bulb. A locking hook extends from the mounting member and cooperates with a notch formed in flange so as to connect the bulb to the bulb-holding frame.

Abstract: A snap on fillerneck for a tank 52, 76 on a heat exchanger includes a hollow body 10 having an interior sealing surface 20 intermediate its ends 12, 14 which is adapted to be engaged by a seal 22 on a pressure cap 24 and which faces axially toward one end 12 of the body 10. An exterior flange 28 is located on the end 12 of the body 10 and has a pressure cap retaining surfaces 30, 32 for retaining the pressure cap 24 thereon. Resilient fingers 36 extend from the other end 14 of the body 10 and have integral, generally radially movable retaining surfaces 38 for retaining abutment with an end 58, 58' in a mounting element 50, 50'. The body 10 includes an exterior sealing surface 44 intermediate the ends 12, 14 thereof for cooperation with a seal 46 to seal the interface of the body 10 and the mounting elements 50, 50'.

Abstract: An improved table top grill which includes a modular fire grate configuration for holding heat retention material in a predetermined area, the fire grate configuration being easily removeable from the grill. Two sets of fire grate modules are provided along with a heating grate so that a dual-purpose grill is obtained, wherein both a grilling operation and a pot or pan cooking operation can be conducted simultaneously.