Abstract: The invention contemplates slit-lamp apparatus for ophthalmological examinations and is characterized by simplicity of components designed to facilitate use, the use being assumed to involve the analytical operations most often needed. The instrument is portable and provides ready availability of slit-projector means and tonometer means when desired, on the microscope-viewing axis. All components are upstanding, with respect to the mounting base, and simple knurled-ring adjustments enable selection of projected-slit dimensions and filters.

Abstract: The invention contemplates an improved folding machine for providing different types of folds. The machine includes a folding knife mechanism which is rotatably mounted in the machine frame about an axis of rotation which lies in the plane of the sheet to be folded so that at a first position the knife operates upwardly and at a second position the knife operates downwardly. These different directions of operation will produce different types of folds without the need of different folding mechanisms for each type of folds.

Abstract: A transistorized power amplifier includes a differential pair coupled to a push-pull driver. The latter provides an amplified signal to an output stage through a compound driver, which comprises a pair of complementary transistors. The collector of the input transistor of the compound driver is connected to the base of the other transistor in the compound driver.

Abstract: The invention contemplates an improved drive and measurement-scale configuration for a measuring machine of the type in which the measuring head and its work-contacting probe are carried in the arch of a gantry which is slidable along base ways (in the x-direction) on opposite sides of a workpiece on which one or more surface points are to be measured for their x, y, and z coordinates. The configuration of x-drive action and x-scale measurement is of inherent precision, with attendant minimizing of displacement error in the measurement of all three positional coordinates of a given point on the workpiece.

Abstract: The invention contemplates a single machine comprising two different wire feed systems and two different link-forming counter-pliers systems, each unique to a preselected different link size and/or shape, and a shuttle-borne counter-pliers unit is caused to cooperate, in a preselected program pattern, with one or with the other of the pliers systems (and associated wire-feed system), whereby the cumulative chain assembly of differently sized and/or shaped links may be developed in accordance with the pattern of shuttle operation.

Abstract: The invention contemplates a viewing-head attachment removably securable to the body of a microscope and adapted to accommodate binocular viewing elements. The attachment employs two housings which are pivotally connected so that the binocular-viewing elements on one housing are enabled to stereoscopically view an object examinable under the microscope body to which the attachment is secured. The quality of stereoscopic viewing is unaffected regardless of the instantaneous pivot-angle relationship as between the two housings, and no further optical adjustments are needed.

Abstract: Apparatus for the storage of commodities which includes a plurality of shelves arranged to provide storage positions in the vertical and horizontal direction and a commodity carriage, containing a commodity to be stored, designed to move up and down and left and right along a front face of the shelves. The commodity carriage is positioned at a point facing a predetermined storage location in the shelves and apparatus "pushes-aside" the commodities contained in adjacent storage location so that thecommodity contained on the carriage can be stored without interference.

Abstract: The invention contemplates use of a single magnetic-field (flux) sensor mounted within an elongate probe housing, to continuously generate telemetered electric signals from which the instantaneous orientation of the housing is at all times known and from which changes in orientation may be tracked as a function of probe depth within the borehole in which the probe housing may be displaced. The telemetered electric signals provide accurate and current indications of (a) magnitude of the horizontal component of the earth's magnetic-field lines, (b) direction and magnitude of probe-axis tilt with respect to the gravitational vertical, and the direction of the earth's magnetic field, and (c) a probe-housing frame-angle reference; provision being made within the probe housing for performing substantially all discriminating, detecting and other problem-solving functions, whereby the telemetered signals are directly utilizable by recording and/or display equipment at surface end of the borehole site.

Abstract: A sealed electrical energy storage container is provided which is cylindrical in shape and has upstanding sidewalls of generally uniform thickness. The upstanding sidewalls of the container include at least one area of reduced sidewall thickness and the reduced sidewall thickness area is designed to rupture in response to predetermined circumferential stresses occurring within the cylindrical container. The circumferential stresses occurring within the cylindrical container can be concisely calculated, allowing the thickness of the reduced thickness area to also be calculated, such that container venting will occur in response to a concise and predetermined internal pressure within the container.

Abstract: A sintered titanium carbide tool steel composition is provided comprising by weight about 15% to 40% primary grains of titanium carbide dispersed through a steel matrix making up the balance, the composition of said steel matrix consisting essentially by weight of about 3% to 7% chromium, about 2% to 6% molybdenum, about 2% to 8% nickel, about 0.2% to 0.6% carbon and the balance essentially iron.

Abstract: The invention contemplates an improved traction-drive transmission of the variety in which plural planet wheels are radially displaceable in orbital motion about an axially opposed pair of axially shiftable sun wheels and within an axially opposed pair of rotationally fixed reaction rings, said planet wheels having constant angular-contact with the wheels and rings of both pairs. An axially fixed pivotal reference between the sun wheels is used for linked connection of the sun wheels such that displacement of the respective sun wheels is always equal in magnitude but in opposite axial directions with respect to the axially fixed reference, thus assuring that the instantaneous radius of planet-wheel orbit between the sun wheel and reaction ring on one axial side of the fixed reference will at all times match the instantaneous radius of planet-wheel orbit between the sun wheel and reaction ring on the other axial side of the fixed reference.

Abstract: Automated dispensing apparatus is disclosed for administering intravenous fluid to a patient at a controlled volumetric rate such that deviations from the desired fluid volumetric flow rate are automatically corrected. In accordance with the invention, the width and silhouette of each drop of fluid are measured and give rise to representative signals of each such parameter. These signals are then multiplied to obtain a signal proportional to the volume of the drop. This drop volume signal is combined with a rate control signal to modify the latter to reflect deviations in the measured drop volume from a nominal value. The thus modified control signal is compared against the actual rate of drop administration, and any necessary adjustment made in the constriction of a fluid-passing tube. The rate at which intravenous fluid is supplied to the patient is thus maintained at the desired volumetric rate.

Abstract: Relates to a sintered age-hardenable titanium carbide tool steel comprising by volume about 15% to 50% primary grains of titanium carbide dispersed through a high cobalt-containing steel matrix making up the balance, said matrix consisting essentially by weight of about 10% to 25% cobalt, about 5% to 20% chromium, about 0.5% to 5% molybdenum, 0 to 2% nickel, 0 to 0.15% carbon and essentially the balance at least about 50% iron.

Abstract: A semiconductor device is provided with a metal header of a size sufficiently small such that only a semiconductor element holding plate which requires heat dissipation can be mounted thereon. The metal header supports at its upper fringe portion an apertured member having a penetrating opening sealed along the opening. An insulative outer frame having a thermal expansion coefficient of the same order as that of the apertured member is supported on the peripheral portion of the apertured member. A lid member for hermetic sealing is bonded onto the outer frame.

Abstract: The invention contemplates a modular wall-mountable lavatory unit, particularly adapted to side-by-side adjacent mounting in multiple, and comprising interrelated basin and other lavatory-utility features defined by intermediate and side panels and by the contoured wall and shelf elements by which the panels are integrally connected and mutually reinforced. The unit structure accounts for such complete wall coverage as to be directly applicable to (suspendable from) rough stud-framing of a wall and, if desired, to both sides of a single stud-framed wall. The unit structure is also directly applicable to a wall which externally mounts horizontal courses of water-service and drainage plumbing.

Abstract: A refrigerant compressor for use in an automotive air conditioning refrigerating system is provided with an electromagnetic clutch and an AC electric generator assembled on the compressor. The electromagnetic clutch comprises a pulley rotatably mounted on the compressor housing to be driven by the engine of the car, a magnetic attracting surface, and a magnetic armature connected to a drive shaft of the compressor to be magnetically attracted to the magnetic attracting surface to selectively drive the compressor by the engine. The AC electric generator comprises a stator statically mounted on the compressor housing and a rotor mounted on the pulley. One of the stator and the rotor includes concentric magnetic pole pieces of permanent magnets or of electromagnets, and the other of the stator and rotor includes a coil member to which AC current is induced upon the rotation of the rotor together with the pulley.

Abstract: Xylose is produced from residues of annuals by (a) extracting soluble and solubilizable undesired substances from the residues countercurrently with an aqueous acid solution, (b) pressing the extracted residues to remove as much as possible of the proportion of undesired substances, (c) moistening the pressed residues with an acid solution which contains xylose; (d) hydrolyzing the pentosans present in the residues by increasing the temperature of the acidified moistened residues, (e) terminating the hydrolysis by decreasing the temperature of the hydrolyzed residues, (f) extracting the pentoses from the hydrolyzed residues with water, (g) purifying and concentrating the xylose solution obtained, and, if desired, (h) winning xylose by crystallization.

Abstract: A method is provided for treating waste water containing solids of difficultly-soluble compounds of at least one heavy metal, the method comprising the steps of adding an amount of ferrous ions to said waste water corresponding on a molar basis to about 2 to 100 times the total molar amount of heavy metal present in said waste water, adding an alkaline substance to said waste water in an amount corresponding to about 0.9 to 1.2 equivalent of free acid present in said waste water, and stirring the waste water without aeration at a temperature of at least about 40.degree. C., whereby insoluble ferrite crystals are precipitated having said heavy metal incorporated therein.

Abstract: An electric hair dryer includes a heating source and a heating element to produce a supply of heated hair. The heating element is connected to a regulating element which is also connected to a temperature probe placed in the hair. By means of this arrangement, heat is supplied to the hair in varying amounts so as to maintain the hair temperature at a substantially constant level.

Abstract: Thin potato slices are fried to chips in a two-stage operation. In the first stage the slices are fried in oil to a moisture content of 3-10% by weight. This product is removed from the oil and the moisture content is reduced to 1.5-2.5% by weight in a second stage by the supply of heat. To reduce the moisture content in the second stage at least a portion of the frying vapors substantially without false air and having a temperature of at least 120.degree. C., is guided from the space above the oil of the first stage to the slices removed from the oil.