Abstract: A rotary dial telephone set has the normally opaque disc-shaped member, which closes the aperture in the top housing through which the dial passes, replaced by a transparent member behind which is held an opaque insert having indicia thereon giving both dialling numbers and related service indications in association with the finger holes in the dial. The opaque insert is held in the transparent member by a backing member. The form of numerals, i.e. Roman, Arabic, Hebrew, can readily be provided without separate disc-shaped members and similarly the service information can easily be changed without having to prepare new disc-shaped members or alternatively having to stick labels thereon.

Abstract: A spin casting fishing reel assembly is presented wherein actuation of the reel and feathering of the fishing line leaving the reel may both be accomplished at a single point forwardly of the reel itself. Fundamentally, the invention consists of a casing maintaining therein a spool about which the fishing line is wound. A tubular handle is connected to a front end portion of the casing with the fishing line leaving the reel and passing through the tubular handle. The handle includes an outer tubular member having an inner tubular member slidingly received therein. A spring-biased slide button is connected to the inner tubular member and rearward motion of the slide button by the user's thumb causes the inner tubular member to engage a cam maintained within the casing. This cam causes a retraction of a carrier pin to allow the line to be released from the spool, through the tubular handle, and across the slide button.

Abstract: A line guiding tip for trolling apparatus used with a boat is shown which line guiding tip is carried by a boom extending from the apparatus and includes a mounting plug rotatably carried by the boom and a sleeve support attached thereto which carries a pulley over which passes line from a reel carried on the apparatus, over the boom through a guide over the pulley and out through a readily removable bushing carried by a bracket also mounted to the sleeve support. The bracket is rotatable in response to changes in direction of the line. Movement of the bracket to a position approximately parallel to the boom is obtained improving access to and reducing damage to the line when the end of the line is pulled aboard the boat.

Abstract: A combination toy assembly having individual removable component parts is provided to form a versatile toy for a child. Mounted within the body member is a randomly activated indicator member capable of providing random values for a game of chance and the like. Various forms of power devices can be appended to the body member for locomotion such as a motor with a pair of drive wheels and a waterproof motor assembly with a propeller. Pontoons and a float member can be attached to the body member to permit the mobile toy to operate in water. An articulated extension member can be mounted on the rear of the body member to provide a tail stabilizer or simulated antenna, or can be further bent and mounted on the top of the body member to provide a simulated steering column.

Abstract: An improved instrument is provided for simulating melodious and harmonious sounds of singing birds, such as tropical varieties and the sounds of nighttime insects and small animals, such as the Puerto Rican "coqui". This instrument includes a construction of a plurality of axially aligned air chambers, each having an opening with beveled edges having a bevel angle of 30.degree. into the interior of the respective air chambers, so that upon movement of the instrument through the air by swinging and rotating, a wide variety of melodious and harmonious sounds are produced resembling those of birds and nighttime insects and animals. The plurality of air chambers may be cylindrical, conical or a combination of cylindrical and conical air chambers, and further each air chamber may be sub-divided into two, three, or four sub-chambers, wherein each sub-chamber also includes one opening having beveled edges with a bevel angle of 30.degree. into the interior of the sub-chamber.

Abstract: A means of preserving cut flowers placed in water, said means comprising one or more bactericidal substances, with the possible additions of one or more bacteriostatic substances, one or more surfactants, and/or one or more nutritious substances. The bactericidal substance may be 1.3-dichloro-5.5-dimethylhydantoin which splits off chlorine in relation to the pH-value of the aqueous solution. Said derivative forms part of a thin coating applied to the front surface of a strip of paper or cardboard which is very small in relation to the length of the stems of the flowers. A layer of non- (or very little) water-soluble self-adhesive substance is applied to the back surface of the strip, the substance being tolerable by the stems of flowers. The consumer can easily fasten the strip unit close to the lower end of the stem before placing the latter in water. The strip unit is easily dispensible from a protective container.

Abstract: An overhead garage door opener in which an actuating motor is secured to the door and is coupled to a capstan. A heavy cord, secured at one end to the garage wall above the door and at its other end near the back of the garage, is wound around the capstan. A motor control system such as a coded sound producing device and a time delay receiving circuit is disclosed, to start the motor to open or close the door.

Abstract: A power window regulator for an automobile vehicle in which a substantially vertical post of special design is formed from sheet material and is provided at a laterally projecting edge with a series of rack teeth. A window is provided with a mounted bracket at its lower edge. The bracket supports a motor and transmission including a pinion engageable with the rack teeth to effect vertical movement of the window, bracket, motor and transmission on the rack.

Abstract: A window construction for pivot-out sash wherein a demountable sash guiding lock is mounted on the top rail of said sash. The lock includes a spring actuated plastic latch having either left or right hand openings for receiving a finger button which is demountable from said sash and a retaining clip for maintaining the spring for actuating the latch within the top rail of the sash.

Abstract: A profile grinding machine for grinding the contour surface of an article to be ground such as a wrist watch case or the like is disclosed. The machine comprises a work shaft provided at its one end with a chuck for supporting the wrist watch case to be engaged with a grinder and a profile cam shaft provided at its one end with a profiling cam to be engaged with a profiling cam follower and at another end with a head swing control cam engaged with a cam follower roller. Both the work shaft and the profile cam shaft are rotatably supported by a head swing supporting shaft provided on a profile slide and driven in synchronism with each other. The profile slide is biased in a direction toward the profiling cam follower so as to urge the profiling cam against the profiling cam follower.

Abstract: A method and apparatus are disclosed for grinding a surface upon a workpiece having disparate grindability characteristics. A mechanical cam is used in the preferred embodiment to model the characteristics of a cylindrical surface and is rotated with the workpiece. The cam imparts motion to a follower which in turn imparts the motion to a pulse generator. Electrical signals which are dependent upon the angular orientation of the workpiece and the grindability characteristics of a circumferential sector of the workpiece in grinding contact with an abrasive wheel are produced by the pulse generator and used to partially control the infeed movement and the interface force between the workpiece and the abrasive wheel.

Abstract: A building suitable for use as a greenhouse within which to conduct hydroponic gardening is formed by a pair of side walls and a pair of end walls each of which is provided with a peripheral frame. It is covered by a roof that also has a peripheral frame that fits within the upper portions of the frames of the several sides. The roof is covered with a sheeting material which extends beyond the margins of the frame and is resilient whereby those resilient extensions rest upon the upper portion of the frame of the several sides in assembled condition and form a seal between the roof and sides. Similar extensions of sheeting beyond the peripheral frame of the sides provides sealing at the vertical corners of the building. The sides and roof are secured together by fasteners that can be selectively fastened and unfastened from the interior of the structure permitting complete dissembly and reassembly of the building at will.

Abstract: A glass pane has a broken pattern of dots of an opaque non-reflective material applied to one side thereof. The pattern is applied as a ceramic ink fused into the glass surface in a heat toughening step. The arrangement of dots is such that the pattern occupies 10% to 30% of the pane surface and comprises 30 to 50 dots per linear inch. A squash or like court formed from a number of such glass panes is such that players within the court are not distracted by spectators outside and can follow the path of a squash ball with ease, whereas spectators outside the court, by virtue of differential lighting as between court and spectator area, can watch the activity within the court without diminished vision.

Abstract: A hollow building-block-type module for a wall construction that utilizes a plurality of such modules laid up with mortared joints in staggered courses and with horizontal and vertical reinforcing bars embedded in concrete poured into the spaces or voids within the hollow blocks. The module comprises parallel side walls joined by vertical webs to define an integral void between adjacent webs of the module and voids between adjacent webs of abutting modules. The voids in each course are vertically aligned in stacks with voids of other courses and the webs are provided with notches for locating the horizontal reinforcing bars away from an adjacent side wall. The module also has lips projecting inwardly from the side walls defining an integral void so that a vertical rod inserted in a stack of voids between a side wall and the horizontal reinforcing bars is also spaced away from the interior surface of the respective side walls of the vertically aligned voids.

Abstract: Apparatus for wrapping a stretchable foil around goods to be packed, comprising an upper supply roller for a packing foil with a hold-down and stretch beam and a lower supply roller for a packing foil with guide and stretch means. Clamping, sealing and cutting means are provided for effecting a seal and cutting the tensioned foil wrapped around the goods, wherein the lower clamping means with the lower guide and stretch means are adapted to effect a differential tension in the lower foil web in such a manner that the tension in the foil web between guide means and goods to be packed is considerably greater than between guide means and clamping means. A method of wrapping in which a differential tension is effected in a lower foil web in a package wrapping operation between the goods and a guide, and between the guide and a clamp.

Abstract: A reader-filler machine adapted to cut and insert sections of microfilm into the channels of a multi-channel microfiche jacket, each channel having an entry slot adjacent its rear end. The jacket to be loaded is placed on a platform that is shiftable stepwise with respect to a film trackway guiding a film web, the trackway being parallel to a film pusher station. In the insertion mode, after a section of film of a desired length is extended from the trackway for insertion in a given channel through its entry slot, an automatic three-phase insertion cycle is initiated. In the first phase, the section is cut to produce a film chip whose tail projects beyond the entry slot. In the second phase, the platform is indexed one forward step to align the next empty channel with the trackway and the tail of the chip with the film pusher. In the third phase, the film pusher acts to engage the tail and push it into the channel, thereby loading the chip in the channel.

Abstract: Apparatus for rolling a swath of fodder into a bale in contact with the ground includes a frame, a driven pickup shaft with several transversely spaced sets of fodder pickup tines the tips of which sweep the ground to roll fodder in the swath forwardly to form a spiral bale, bale compacting means in the form of endless bands with raddles therebetween which has a lower working run the rear of which is immediately above the tine tips and the front of which is near the front of the frame, a pair of disks which are journalled on the sides of the frame on a common axis and which support the ends of the raddles so the working run arches upwardly between the rear and the front, spring means tensioning the bands so that when a forming bale is larger than the disks the raddles heavily compress the fodder in the periphery of the bale, and a transverse, driven beater roll immediately forward of the disks which tend to beat fodder loosened by the raddles back into the forming bale.

Abstract: In a crop roll forming machine having cooperating upper and lower bale forming means there is provided an improved automatic twine wrapping mechanism for binding a completed crop roll with binding material. The automatic twine wrapping mechanism is triggered by one of either two trip devices to automatically effect the serial steps of the twine wrapping cycle.

Abstract: The shaft of a spinning rotor is journaled for rotation on pairs of rollers, and is urged against the rollers by a drive belt. The end of the shaft away from the rotor has a taper fitted into a corresponding taper of the central hole of a rolling bearing. The shaft may be held in the bearing by a permanent magnet spaced from the end of the shaft, or by an O-ring engaging grooves in extended portions of this shaft and bearing inner ring.

Abstract: Disclosed is a method of manufacture of a rotor for the open end spinning of staple fibres into yarn which is formed of a steel and has hardened surfaces at its fiber contacting and collecting surfaces, wherein the rotor may be fashioned by machining from a block of steel or formed from sheet steel, then hardening its internal fiber contacting surfaces by induction heating or carburizing or nitriding or carbonitriding at least in the region of the rotor's maximum diameter, then quenching and thereafter stress-relieving the entire rotor. Such method provides a rotor with exceptional properties of wear resistance in the area most prone to abrasive wear which latter otherwise reduces the rotor's useful service life and substantially increases yarn processing costs.

Abstract: Disclosed is a bulky yarn made from a thermoplastic multifilament yarn. Each of the individual filaments forming the yarn has a randomly varying thermal shrinkage along its length. The filaments in the cross-section of the yarn also have randomly varying thermal shrinkages. The bulky yarn forms a plurality of loops having a stable and compact configuration, while the number of filament slack portions which project outwardly from the yarn surface is significantly decreased.A method for producing a bulky yarn possessing the above-mentioned construction is also disclosed. In the method, individual filaments forming the multifilament yarn are interlaced with each other, before or after which the yarn is subjected to a so-called random heat treatment. The interlaced and randomly heat-treated yarn is supplied at an over-feed condition to a fluid turbulent flow region which causes the individual filaments to form a plurality of loops and entanglements, and then the yarn is wound onto a package.

Abstract: A driving device including a magnetized driving rotor mounted for rotation within a magnetic field produced in a coreless coil, and, in order to make the magnetic pole of said driving rotor deviate by a definite angle relative to the magnet field direction of said coil, a supplementary magnetized rotor mounted for rotation outside of the coil and magnetically coupled with the driving rotor. And the supplementary rotor is provided with magnetic poles, the number thereof being greater than the number of poles of said driving rotor. The driving rotor has an odd number of pole pairs.

Abstract: A waterproof acoustic vibrator for a timepiece and comprising a waterproof housing and a plate-like member having a magnetic portion. The plate-like member is mounted for oscillation opposite the waterproof housing and is maintained in a rest position by first magnetic biasing structure. Second magnetic biasing structure magnetically biases the plate-like member to oscillate and develop audible acoustic waves. The first magnetic biasing structure is a permanent magnet, and the second magnetic biasing structure is an electromagnet disposed within the waterproof housing.

Abstract: A watch case and band in combination comprising a back portion containing on the outer periphery thereof first locking means; a center portion comprising a portion of the band containing therein an opening sufficient in size to allow a watch module to pass therethrough and having in the outer periphery of the band around said opening a plurality of smaller openings in alignment with said first locking means; and a top portion having in the outer periphery thereof second locking means located so as to mate with said first locking means locking through said plurality of smaller openings in said band.

Abstract: An energy producing device is driven by a motor vehicle equipped with a gas turbine engine to produce an energy stored and concurrently to give an engine braking effect to the engine to provide a braking force to decelerate the vehicle and the supply of fuel to a combustion chamber of the engine is stopped during coasting of the vehicle and during idling of the engine and the stored energy is employed for rotation of a compressor and a power turbine of the engine in lieu of fuel during coasting of the vehicle and during idling of the engine.

Abstract: An arrangement of dual element alternate flow exhaust cleaner and burner device for diesel engines is disclosed which provides trapping of particulates in the engine exhaust gases by their passage through either of the two elements. Collected particulates of carbon and other combustibles in the other nonactive element are electively incinerated by excess air or oxygen containing gas heated by a suitable burner or heater device. The incinerated products from the inactive element are redirected into the exhaust stream to pass through the active element for the cleansing of particulates remaining from the burnoff process before discharge.

Abstract: An automatic control for an automotive-vehicle hydrostatic transmission in which the engine drives a variable-displacement hydrostatic (axial-piston) pump which is connected with the motor by hydraulic lines. The hydrostatic (axial-piston) motor can be connected to the wheels of the vehicle. The control circuit comprises a filling pump, a metering throttle, a reversing valve and an adjusting device. The metering throttle is provided in a bypass between the filling pump and the reversing valve and is connected to the line communicating with the control element. A further throttle is provided in this line and has a diameter/length ratio less than 1.

Abstract: Gearing is normally used to obtain reverse operation from an output turbine. An improvement is provided herein in a torque converter (10) which comprises a stator (12), an impeller (14) and an output turbine (16). The improvement comprises a plurality of self-cambering blades (42) carried by the output turbine (16) with the angle at which fluid impelled by the impeller (14) attacks the self-cambering blades (42) being adjusted to select the direction of rotation of the output turbine (16). In this manner, the output shaft (36), which is driven by the output turbine (16), can be rotated in either a clockwise or a counterclockwise direction thereby driving a vehicle or other machinery in either a forward or reverse direction without the necessity for gearing.

Abstract: A hydrostatic transmission control system is provided of the type utilizing a main control valve to vary the control pressure being ported to the strokers which control the swashplate position of a variable displacement pump. The control valve includes a control port connected to a source of control pressure fluid and a pair of stroker ports, each of which is connected to one of the strokers. The control valve includes a valve member having a valve land associated with each of the stroker ports, the lands preferably being either zero-lapped or under-lapped and disposed to provide a substantially zero neutral band to provide an improved control response when it is necessary for the valve member to cross the neutral band and port control pressure to the opposite stroker.

Abstract: A solar-thermal power plant, comprises an open air circuit wherein the eftive heat obtained from solar energy is supplied to the air current between a compressor and an expansion machine. The construction includes a solar heater which is exposed directly to solar radiation and which is traversed by the air current and provides a means for the direct solar heating of the air current which is conveyed from the compressor to the expansion machine.

Abstract: A marine Diesel engine consists of parallel left and right engines mounted on a common bed plate having integral independent columns on which the cylinders of the engine are supported, the bed plate and columns forming the crank chambers of the engines. The exhaust and scavenging pipes for the engines are constructed as common parts, the scavenging pipe being mounted between the engines and being flexibly connected to at least one of them so as to permit relative movement between the engine upper portions. A single propeller shaft is driven at a desired low r.p.m. from the crank shafts of the engines through a gearing device consisting simply of a gear on the propeller shaft meshing with a pair of pinions each connected to one of the engine crank shafts by an elastic coupling.

Abstract: In the pipeline of a refrigerator system comprising a compressor, a condenser, an expansion valve and an evaporator, a thermistor adapted to serve as a detector for detecting the dryness of refrigerant is disposed so as to be immersed in the refrigerant at a position where the refrigerant is changed into a homogeneous gas-liquid mixture under the low refrigerant condition. The dryness of the refrigerant is detected by utilizing the fact that while the thermistor is cooled by the refrigerant when its quantity is normal, when its quantity is below normal the refrigerant is changed into a dry gas so that the thermistor is not cooled by the refrigerant and its resistance value is changed. Also a control circuit is provided which is responsive to the signal from the detector, whereby when the dryness of the refrigerant reaches a predetermined value, a signal is generated to render the compressor inoperative.

Abstract: A universal joint assembly comprising a yoke to be connected to a drive shaft, another yoke to be connected to a driven shaft, a spider and needle bearings for rotatably supporting the trunnions of the spider. The joint is used to interconnect the drive shaft and the driven shaft at an angle of intersection of up to 15 degrees. The ratio of the diameter d of the trunnion to the allowable swing diameter D of the universal joint, namely d/D, is greater than 24%.

Abstract: A universal joint of the type including: a first shaft to which tripod shafts are secured radially from the axis thereof; three rollers formed at the outer peripheries thereof with spherical surfaces and with which the tripod shafts are crowned; and a second shaft provided therein with raceways identical in number with the rollers and on which the outer peripheries of the rollers roll and are supported. The universal joint further includes a plurality of oil grooves provided at contact-roll surfaces between the rollers and the cylindrical raceways.

Abstract: In a flatbed knitting machine having one or more carriages movable reciprocally or, on a closed path with respect to one or two needle beds, control data is conveyed to the or each carriage by light or other electromagnetic radiation or acoustically, one or more data transmitters being located externally of the needle bed or beds and the carriage having means for processing and storing data relating to at least one knitting course. The transmission zone is screened or otherwise shielded against interference. The transmitted signals may be modulated in various ways and alarm and timing control arrangements are described.

Abstract: This anti-theft device has a plurality of arcuate metallic sections hingedly connected to be removably applied to an airplane propeller blade at one side of the propeller shaft and locked in place to prevent unauthorized removal. The device forms an eccentric weight mass which when the engine is operated, causes vibrations so severe that the aircraft cannot take off or fly successfully. A warning flag or banner is attached to the device and anyone at all familiar with aircraft operation will not attempt to take the plane.

Abstract: A key ring assembly comprised of a flexible finger loop member carried on a key ring. The finger loop member is formed from a flat elongated sheet of a suitably flexible material and has an aperture formed in each end thereof through which the key ring is received, the flat elongated sheet comprising the finger loop member being formed into a loop when assembled onto the key ring. The material from which the finger loop member is formed preferably comprises a 3:1 mixture of high density to low density polyethylene, the thickness of the flat elongated sheet comprising the finger loop member preferably being between 0.035 and 0.040 inch in order to provide the desired flexibility and conformational integrity.

Abstract: Disclosed herein is a process of compression stressing a metal workpiece having a body with a central bore so as to produce a residual compressive stress in the workpiece to increase the fatigue strength of the workpiece. The process includes the steps of forcing the workpiece onto a mandrel to induce an initial tensile stress in the body, thereafter inducing a compressive stress in the surface of the workpiece by shot blast treatment of the surface of the workpiece, and thereafter separating the workpiece from the mandrel to increase the compressive stress in the surface of the workpiece.

Abstract: A hand-operated bender apparatus for forming relatively thin metal stock into parts having predetermined shapes, comprising a base, a clamp on the base for holding portions of the metal stock to be shaped, and a elongate handle which is pivotally carried on the base and which can swivel about an axis thereon. The handle carries a spring-biased slide member on which there is mounted a transverse, upstanding pin constituting a shoulder adapted for engagement with the metal stock. The clamp is in the form of a vise having a fixed jaw constituted as a die, around which the metal stock is formed. The slide member is normally biased toward the pivotal axis of the handle but can yield outwardly in a direction away from such axis as the handle is swiveled, this occurring under the action of forces transmitted through the metal stock as it is being formed. The yieldable shoulder on the handle permits the use of dies having irregular shapes.

Abstract: A process and device for manufacturing, composite sections, by means of extrusion, are described. The composite sections comprise at least two components one of which is fed into the stream of metal being extruded and is securely joined to the face of the product without coming into contact with the face of the extrusion die.

Abstract: An apparatus for testing the stability of a liquid composition comprising a thermal means, one or more liquid sample chambers, one or more reservoirs for a standard solution, a first flow path for extracting a metered quantity of liquid, a second flow path for extracting a metered quantity of standard solution, and valving means for forming said first and second flow paths.

Abstract: A hose testing system comprising a source of pressurizing fluid, a distribution system for supplying the fluid from the source to a hose under test, a pump for pumping fluid through the distribution system into the hose under test, a regulator for maintaining a constant volume flow rate for the fluid being pumped into the hose and a gauge for indicating the fluid pressure existing in the hose at any specific time. Because of the constant volume flow rate provided by the test system, the monitored pressure vs. time of the hose under test is indicative also of its pressure vs. volume. Consequently, the system can be used to dynamically measure the internal pressure vs. volume characteristic of a given hose which measurements can in turn be employed to predict its structural integrity.

Abstract: An apparatus for measuring the incremental grooming force experienced by a hair tress during combing, and supplying an instantaneous readout of that force. The apparatus includes a comb or brush with strain gages attached to it which change resistance when mechanically deformed. The change in resistance is electrically measured to provide an indication of incremental grooming force. A continuous monitor is connected to the resulting electrical signal to provide an instantaneous indication of incremental grooming force. A method for using the apparatus to reduce the creation of split ends during hair grooming is also provided.

Abstract: Instantaneous mass flow rate of a component of interest in a flowing fluid is determined by structure for and method of introducing a tracer at a known mass flow rate into the flowing fluid, then analyzing for the concentration of the tracer and that of the component of interest in the mixed flowing fluid, and obtaining the product of the concentration of the component of interest, the reciprocal concentration of the tracer, and the mass flow rate of the tracer. To obtain the total mass flow of the component of interest, the instantaneous mass flow rate is time integrated over the desired period.

Abstract: An electromagnetic flowmeter capable of accurately measuring the flow rate of fluid conveyed on a line in either direction. The flowmeter includes a primary whose flow tube is provided with electrodes yielding a signal depending on the flow rate of the fluid intersecting a magnetic field established in the tube, the sense of the signal changing with the direction of flow. This electrode signal is applied to a secondary in which the electrode signal is converted by demodulator means into a d-c signal whose magnitude is a function of flow rate and whose polarity depends on the sense of the electrode signal. This d-c signal is converted into variable-frequency pulses which exhibit a duty cycle proportional thereto, the pulses being sampled and fed back through a feedback loop to one input of a summing junction to which the electrode signal is also applied as another input, the ouptut of the junction being fed to the demodulator means.

Abstract: A data collection and reduction system for a shock suppressor valve test system is provided. The test system includes a flow meter for generating a DC voltage signal corresponding to the velocity of fluid flowing through the flow meter and a recorder for recording and outputting an AC voltage signal corresponding to the velocity of fluid flowing through the flow meter. The data collection and reduction system includes circuitry interconnected to the flow meter for amplifying the DC voltage signal generated by the flow meter to produce an amplified DC voltage signal. Circuitry converts the amplified DC voltage signal to an AC voltage signal for application to the recorder for recordation of the velocity of the fluid flowing through the flow meter. Circuitry is further provided and interconnected to the recorder for amplifying the AC voltage signal output by the recorder.

Abstract: A flow meter comprising a fluidic switching device coupled as a free-running oscillator. The frequency is dependent on the flow rate of the medium. The device called a fluidistor has a nozzle (edges) arranged upstream of the control chambers and a first region downstream of the control chambers, within which first region the flow of medium lies either on one side or the other side in dependence upon the pressure conditions and flow conditions prevailing in the oscillator circuit. A second region is located downstream of said first region. Mutually spaced apart orifices of a cross-connecting line, said orifices preferably being arranged transversely to the flow direction, are arranged at a location at which the stream of fluid is deflected, in a manner such that said orifices are coupled together, through a line. In said line is a pressure-sensing device arranged to generate a signal corresponding to the measuring result and that said deflection location is placed downstream of the control chambers.

Abstract: A device for indicating the volume of liquid in a fuel tank or like container includes a linear variable differential transformer (LVDT) mounted within the tank, which is divided into a liquid containing section and a gas containing section by a longitudinally movable piston. Pressure gas is provided to the gas containing section of the tank through a port in a tank wall, and urges the piston to follow the liquid level in the tank. The LVDT has a fixed coil housing with a fixed electrical input and a rotatable core actuator. The core actuator is coupled for rotation in response to movement of the piston. Rotation of the actuator effects translational movement of the core within the coil, thereby producing a variable electrical output in response to changes in liquid volume.

Abstract: Apparatus for treating samples comprising a sample holding element; a wash trough removably positioned over the sample holding element; transfer tubes or conduits in sample receiving contact with the sample holding element, extending through the wash trough to a transfer head positioned over a vacuum manifold which elements, in combination, deliver sample from the sample holding element directly to a plurality of filter discs in said vacuum manifold means. A cutter block is positioned between the transfer head and manifold. The apparatus is designed and arranged so that the cutter block will simultaneously cut and position a plurality of filter paper discs on said filter discs. A plurality of individual samples can be treated rapidly while minimizing the amount of filter paper used with assurance of quantitative sample transfer.

Abstract: Method for the determination of settlement in foundation structures for buildings such as dams using a long length of tubing installed within the foundation structure in which mercury and water with a defined interface is forced along the tube from one end against a constant back pressure applied at the other end, the quantity of mercury displaced along the tube being measured together with the pressure applied to compute the position of the interface in the tube and the height thereof above a datum point. A construction of unit to provide the constant back pressure is also disclosed in the specification.