Abstract: This apparatus involves an assembly of a test tube and paddle insert. The tube has a frustoconical body and a tapered tip in which is a well, having opposed tapered wide flat walls and narrow walls. The paddle insert has a long handle integral with a transparent tapered paddle head that is shorter than the tapered well in which the paddle head seats. Flexible fingers extend away from the head to frictionally engage the narrow walls of the well and prevent the paddle from falling out of the tube when the tube is inverted or tipped. A ridge on the edges of the side walls and the back of the paddle head retains a specimen in a narrow chamber defined between adjacent walls of the tube tip, the paddle head and the ridge for microscopic examination thereof.

Abstract: In this system, a receiver having adjustable sensitivity to movement by a room occupant picks up continuously generated compressional waves of ultrasonic frequency reflected from the occupant. Movements of the occupant cause changes in frequency of the reflected wave which are detected, and pulses are applied to a timer which applies a timed voltage to a logic circuit. A signal indicating a difference between a preset ambient temperature and that sensed by an electronic sensor is applied to the logic circuit. The logic circuit is arranged to actuate relays to turn a selected heating or cooling unit on if occupant movement is detected and ambient temperature difference exists, and to turn the selected unit off if the room becomes unoccupied. The logic circuit is effective to turn on the heating unit if ambient temperature falls below a preset, low other temperature, even if the room is unoccupied.

Abstract: A sector motor has a rotor which is rotatable to one of three positions in a housing. The rotor carries field magnets surrounding stationary armature poles carried by the housing. An arcuate 90.degree. slot in one end of the housing receives an arcuate 45.degree. arm projecting from the rotor thereby limiting the rotor to a total angular rotation of 90.degree.. Spaced latching magnets coact in mutual repulsion or attraction or both to latch the rotor at either end of rotor rotation. The motor's inherrent magnetic restoring force assisted by a magnetic detent carried by the housing and rotor and located midway between opposite ends of the 90.degree. slot latch and prevent vibration of the rotor in a central position between opposite ends of its range of rotation.

Abstract: A process and apparatus for improving a steam sterilization cycle by shortening the time of the drying stage of the cycle. Sterilized articles in a sterilization chamber surrounded by a steam jacket chamber, are enveloped in water vapor which is quickly cooled and condensed by draining steam from the jacket. In addition, a heat exchanger comprising pipe coils mounted within the sterilization chamber completely below the articles to be sterilized with a cold coolant circulated therethrough may be used to further cool and condense the water vapor in the sterilization chamber, from which water and water vapor are quickly drawn off by an applied vacuum. The process involves the simultaneous steps of: withdrawing steam from the steam jacket to cool the walls of the sterilizing chamber; removing water and water vapor by vacuum from the sterilizing chamber; and circulating cold coolant in the heat exchanger.

Abstract: A glide path instrument for an aircraft to display to a pilot that the aircraft is descending on a predetermined inclined glide path. The instrument includes a rectangular casing mountable in stationary position in the aircraft and carrying a freely pivotable frame which has sighting elements at opposite ends spaced different vertical distances from the plane of the frame. The frame carries a pendulum-like structure including depending legs supporting free swinging weights. The sighting elements align in a single sight plane with a runway reference point when the aircraft is at the predetermined glide angle. A lamp in the casing illuminates the sighting elements.

Abstract: An instrument for holding and chipping a bond has a pair of elongated curved handles spaced apart at one end, and pivotally connected at other ends to ends of flat elongated jaws. Central portions of the jaws are pivotally connected together. Outer ends of the jaws and handles normally flare outwardly and are held by outwardly biased leaf springs secured to the handles. The handles pivot on a free floating disk disposed in slots formed in facting edges of the handles. The outer ends of the jaws are formed with interfitting teeth and recessed having side walls formed with sharp cutting edges.

Abstract: A lift chair for a disabled person has a seat comprising a stationary horizontal rear seat portion and a rotatable front seat portion to support a person in seated position. The rotatable front seat portion is rotated between a horizontal position and an elevated position by a drive means including an electrically driven motor. The rotatable seat portion may carry a seat pad which overlays the rear seat portion. The chair may have a fixed or movable back. The movable back may carry a back pad and may be operatively connected by frame members to the drive means to rotate upwardly when the front seat portion rotates upwardly and forwardly. An assembly may be provided for adjustably elevating the seat to accommodate persons of different heights. A sling is provided between the back and the front seat portion to close the space defined therebetween when they are rotated upwardly.

Abstract: A bracket structure for supporting a horizontal or vertical sheet-like member and adapted for attachment to a supporting apertured panel having a first U-shaped clip with two opposing spaced flat side walls joined by an integral end wall. A stem extends outwardly of the end wall which has a cylindrical slotted neck to define flexible spaced bifurcations. When the bifurcations are pressed together they define a round head which may enter an aperture in the supporting panel.

Abstract: Apparatus for microscopic examination of a specimen includes a cylindrical test tube having a well, defined by closely spaced transparent flat walls at the closed end of the tube. A paddle-shaped insert has transparent insertable flat sided body at one end insertable into the well with a long stem extending out of the open end of the tube. The thickness of the body is slightly less than the spacing of walls of the well to spread specimen therein between and to support the specimen when the apparatus is placed in or on a microscope for examination of the specimen.

Abstract: A rotor for an electromagnetic indicator comprises a flat circular disk made of thin, pliable, nonmagnetic material. The disk has integral tabs extending out of diametrically opposite edges and a rib extends diametrically of the disk to outer ends of the tabs. The rib and tabs define T-shaped trunnions which engage in T-shaped slots in respective sides of a rotary magnet, and a journal block. The disk is fabricated from a single flat sheet having flat tabs extending outwardly of opposite edges. A V-shaped groove is made in the sheet extending centrally across the disk and tabs. Opposite sides of the groove are then brought together to form the rib with T-shaped trunnions at opposite edges of the disk.

Abstract: Apparatus for winding a coil or wire or thread on a C-shaped core structure where the coil width is greater than the gap through which it is being wound comprising, a stationary pedestal having a stationary base and upper platform. A first arm having a central slot engaging a stationary pin on the platform slides and turns angularly. A block and shaft are connected to one end of the arm and are reciprocated by a motor driven cam so that the end of the arm moves in a straight line. At the end of the arm is a post carrying an upper other arm which extends in cantilever fashion over the first arm. Jeweled bearings on the upper arm guide a wire to the rotating C-shaped core structure. The free end of the upper arm extends into a pole gap between ends of the core structure and moves with the lower arm in a straight line while the arms turn and slide on the pedestal, so that the coil is wound uniformly layer on layer on the rotating C-shaped core structure.