Abstract: The present invention refers to a device for stepwise displacement of a work-piece or a similar body, the device comprising a rod made from a reversibly expanding or compressing material coupled to an activation device whereby the rod has its ends resting in clamping brackets to be clamped alternatively at the expansion or compressing of the rod.

Abstract: A four way corner level is provided with a first run, a second run extending perpendicular to the first run, and a third run terminating in a handle member extending from the external apex of the first and second runs. Vertical and horizontal level means are provided on the external sides of the first and second runs and magnetic attaching means may be provided on the internal sides of the first and second runs.

Abstract: There is provided a drying apparatus, which is particularly intended for drying the print on printed paper sheets for example, subsequent to said sheets leaving a printing machine. Means are provided for applying to the wet, printed surface heated air having a moisture content, which is at least substantially equal to the moisture content of the paper sheet. A heat exchanger is arranged to remove moisture from the used air exhausted from the system and to transmit this extracted moisture to fresh air drawn into the heat-exchanger for a subsequent drying operation.

Abstract: This invention relates to an improvement in a drying installation for treating a web of material including a drying hood having flow channels therein and heat sources and blowers for the circulation of a drying medium which is passed through apertures to said web and drawn off again through exhaust channels, the improvement comprising a plurality of profiled tube means mounted adjacent said web, the distances between said tube means constituting diffuser-like gaps serving as exhaust channels, and a plurality of apertures in said tube means directed toward said web, said apertures being in a triangular configuration and distributed over said tube means at a constant distance.

Abstract: A cooling container vessel, comprises a vessel hull with spaced apart bulkheads which define a storage space therebetween and which includes substantially vertically arranged guide frames disposed in the space at spaced locations from the bulkheads alongside a vertically elongated manifold for the supply of cooling air. A plurality of horizontally extending double-walled cargo supporting structures are engaged with the frames and are supported thereby in a horizontal position. The double-walled cargo supporting structures are provided with an interior cavity which is supplied with cooling air by a connection carried thereby which may be engaged with a connection to the manifold and include at least one wall which has openings for the flow of cooling air into the cavity of the double-walled supporting structures and outwardly through the openings in the wall thereof.

Abstract: To simulate the radar return from terrain of particular generic type (e.g. desert, forest, cultivated land) it is a known suggestion to employ closed-loop shift register with feedback suitable to produce particular "texture" of return from specified terrain. It is here disclosed to synchronize output of such register with azimuthal position of simulated search radar; but this alone gives "grainy" effect because "smeary" or slowly changing amplitude with range in PPI sweep is not matched by corresponding lateral, or azimuthal, "smear". This objectionable effect is overcome by providing three sets of output terminals on feedback register, giving outputs corresponding to shifts for azimuths N, N+1, and N+2. By buffing together the three outputs, an azimuthal variation at a slow rate, comparable with the variation with range, is obtained, giving a more deceptive (and thus better) simulation.

Abstract: A number board apparatus for teaching beginning set and number theory to young or educationally handicapped children and including a carrying tray having a generally rectangular base with an upright sidewall rising from each of its edges, a plurality of work blocks freely slideable on a top surface of the base until contacting a sidewall or another block, each work block having indentations in the form of a numeral and/or a rectangle which are receptive to removable numeral or rectangular unit marker pegs, respectively. Several optional members such as covering boards and specialized work blocks may also be used with the number board apparatus.

Abstract: This foot protector includes a front portion providing a protective cover for the toes and instep of the wearer and a wrap-around rear portion protecting the back and ankle portions of the foot, the protector being fully open at the bottom. The rear portion of the protector includes oppositely disposed sides and is formed into separable portions which are provided with lace openings so that they can be laced together by a single lace. The lace includes a side lace portion which draws the sides together, and a transverse portion which extends under the foot and cooperates with the side lacing to secure the protector to the foot. Reinforcing strips are provided to strengthen the lace margins and the junction between the front and rear portions of the shoe.

Abstract: A one-piece heel cushion formed of homogeneous elastomeric material adapted to conform to the insole of a wearer's shoe to relieve the pain of a heel spur. The cushion tapers toward its forward end and has an elongate cavity in the lower surface thereof extending directly under the heel bone, and a slight concavity in the upper surface located over the cavity. The cavity is approximately one-third the height of the cushion at it's rear end resulting in a bridging section over the cavity which flexes under the weight of a person's heel while the portions of the cushion surrounding the cavity bear the major portion of the wearer's weight.

Abstract: The present invention relates to a method for assisting in the identification of valuable articles which comprises selecting a carrier, transcribing information as to the identity of the valuable on the carrier, and fixing the carrier to a portion of the valuable. The structure includes a miniaturized carrier of relatively innert material and having identifying intelligence thereon, wherein the carrier is adapted to be fixed or otherwise embedded in the valuable article.

Abstract: An advertisement display pillar for door usage having a rectangular stand in which a plurality of units are mounted vertically and in parallel. Each unit has a plurality of frames comprising parts of a total poster display surface facing the viewer. The frames permit being turned like the leaves of a book according to desired programs. By so turning the frames several complete posters can be sequentially displayed.

Abstract: An aiming system for attachment to a weapon having a laser for projecting a beam of light onto a target to assist in aiming the weapon. The aiming system permits the laser to be releasably attached to the firearm by providing a mount which is releasably attached to an adapter secured to the aiming system. To protect the laser from severe recoil shock and to provide a rugged housing which prevents accidental damage or undesired contaminants from damaging the system, the laser is enclosed within a dust-proof housing and connected to a buffer means also carried within the housing. The aiming system further permits easy substitution of interchangeable housings, each enclosing a laser, by providing a mount fixed to the weapon which has a boresight adjustment mechanism that serves to adjust the position of the laser with respect to the barrel of the weapon.

Abstract: A hand gun has a cylinder, a chamber in the cylinder for holding a shell casing, an extractor rod extending through the cylinder adjacent the chamber, an extractor on an end of the extractor rod normally held in a closed position adjacent the chamber, and a return spring around the extractor rod for normally biasing the extractor into its closed position. The extractor normally can slide the casing entirely out of the chamber in response to travel of the extractor rod. A safety bushing is secured around a portion of the extractor rod, and the return spring is biased against the safety bushing. The safety bushing reduces the travel of the extractor rod which, in turn, limits the distance that the extractor can move the shell casing out of the chamber.

Abstract: An aeration device which can be adapted without permanent connection to an existing container such as an ice chest is disclosed. The apparatus provides a baffle which substantially conforms to the cross section of the container thus dividing it into first and second sections. One side of the baffle is provided with a pump which transmits fluid from the second section in the container through the baffle to the first section where it enters an aeration sparge thereby creating a plurality of high speed water jets which strike the water surface of the first section and aerate the same. The second section of the container houses a pump which is separated from the fish, thereby preventing the intake of fish and into the pump and halting its proper function. A flow opening can be provided in the baffle to enhance the flow of fluid from one side of the baffle to the other.

Abstract: An apparatus and method for attracting and killing mosquitos and other similar insects are disclosed. The device includes a body, within which is disposed heat generating means, and a surrounding porous sleeve which contains a charge of water and which carries a sticky substance on its outer surface. Upon activation of the unit, both heat and moisture are radiated to the surrounding environment, and the mosquitos and other insects which are thereby attracted to the device will adhere to the sticky substance and eventually be destroyed.

Abstract: A doll-dressing assembly kit including a full-bodied, three-dimensional doll having slots therein of precise location and configuration, patterns for use as guides in cutting out two dimensional fabric clothing pieces for enwrapment around the doll, and a special tool for inserting portions of the fabric clothing pieces into the slots for dressing the doll.

Abstract: Soil is stabilized to resist erosion due to weather exposure by depositing a latex coagulating amount of an aqueous solution of a polyvalent metal salt on the soil surface followed thereafter by depositing on that so treated surface a soil stabilizing amount of an aqueous polymer latex coagulable by said salt.

Abstract: A remote controller for remotely controlling the opening position of a hinged window of a vehicle, which comprises a flexible cable with one end operatively connected to a free end portion of the window, a cable guide member for guiding the cable, an operating device connected to the cable to longitudinally move the same causing opening and closing movements of the window when operated, and a one-way braking mechanism for braking the longitudinal movements of said cable induced by the opening and closing movements of the window while freely permitting the movements of the cable via the operation of the operating device.

Abstract: A vehicle window regulator employing a guide track and flexible rack rotary-to-linear motion converter, in which the track is bendable but rigid operationally and of T-shaped cross-section and the flexible rack comprises a strip with laterally offset, inwardly extending, longitudinally spaced integral flange portions at its opposite edges embracing the edges of the cross portion of the T-shaped track.

Abstract: A plurality of identical metal roof panels are secured to the roof purlins by spaced metal clips. Each roof panel, which may be installed without regard to end-to-end orientation in its own plane, includes deformable tabs extending outwardly of its side edges. Adjacent roof panels are interlocked with each other by interengagement of the tabs in response to positioning of the panels in place. The clips which secure the roof panels to the purlins are also provided with deformable tabs arranged to interengage with the tabs of the roof panels thereby to hold the roof panels in place even prior to bending of the tabs. The tabs are bent downwardly and a sealing strip is fitted over the bent tabs to weatherproof the seam. The roof is constructed using these panels by proceeding from one end of the building to the other in a single pass.

Abstract: A method and apparatus for harvesting and processing head lettuce wherein the lettuce is shredded immediately upon harvesting and before deterioration occurs. The shredded lettuce is retained in an insulated or refrigerated enclosure and then promptly transported to a mobile processing trailer where it is further cleaned and chilled and finally packaged for shipment. The practice of the method and apparatus permits the lettuce to be on its way to the consumer on the same day that it is harvested from the field.A method and apparatus for simultaneously chilling, washing and adding preservatives to the chilled lettuce in a continuous fashion. A mobile enclosure embodying the apparatus and adapted to perform the method wherein the lettuce is maintained at a reduced temperature throughout all stages of processing.

Abstract: Upper and lower continuous films are supplied intermittently, with the upper film being supplied in a direction to form an acute angle relative to the advancing direction of the lower film. A part of the upper film is made soft and expansible by heating and is pressed upon the lower film while both films are stopped from advancement in such a manner that the softened part of the upper film encloses a material on the lower film. The space between the upper and lower films and about the material is then vacuumized. An upper vacuum box having a lower open end is provided above the upper film and has heating means and vacuum suction means therein. The upper vacuum box is moved to an inclined position, in which the lower end of the vacuum box becomes parallel to the upper film, and is then descended to a position, in which the upper film is pressed upon the lower film by the lower end of the vacuum box.

Abstract: A system for packaging articles within containers, each including a lower article receiving portion, wherein a plurality of container receivers are continuously rotated in an endless path and displaced radially of their axis of rotation to various work zones. Each of the receivers is provided with a loading tube and a ram for positioning an article within a container lower receiving portion, and dispensing means are provided for rotating and accurately positioning the container lower portion within the receiver, and for positioning an upper lid or cap portion with respect to the lower container portion.

Abstract: The disclosed chute assembly is particularly adapted to collect the discharge from a rotary lawn or garden tractor, particularly a mower having a vertically adjustable rotary blade housing. In the disclosed embodiment, the chute between the blade housing and the hopper has two telescopically adjustable sections, including a discharge chute which is pivotally supported on the hopper opening lip and a spiral receiving chute which is fixed to and communicates with the blade housing. The mower blade may thus be adjusted vertically without affecting the chute assembly and the chute sections may be easily removed for cleaning, storage or repair.

Abstract: There is disclosed a method of and an apparatus for frictional spinning yarn on the open-end principle. Continuously supplied separated fibers are deposited onto a first, perforated frictional surface provided on a rotary carrier for conveying the fibers to the mouth of a wedge-like gap defined by said frictional surface and another, second, frictional surface provided on another rotary carrier. The second frictional surface moves relative to the first-named carrier, in the opposite direction, and with the first frictional surface twists the fibers in the mouth of said wedge-like gap to yarn, due to a contact with the two frictional surfaces. The yarn is withdrawn sidewards relative to the direction of movement of the frictional surfaces while preventing the twist propagation. In accordance with the invention one frictional surface is concave and the other is convex. This results in a number of advantages, including the elimination of undesirable slippage of the yarn in the yarn building region.

Abstract: Novel block copolymer formed by melt blending a melt spinnable polyamide, such as nylon-6, and a poly(dioxa-arylamide), such as poly(4,7-dioxadecamethylene terephthalamide) (also known as N-30203-T), is disclosed. Said copolymer has utility as a fiber. The fiber of a block copolymer, for example of nylon-6 and said poly(dioxa-arylamide) which is also known as N-30203-T/6, has superior moisture absorption and initial modulus characteristics than that of nylon-6. Furthermore, resulting fiber still substantially maintains the other desirable properties of the major constituent, for example, nylon-6.

Abstract: At least one plastic sheeting element which is oriented at least monoaxially and at least in part in a direction which differs appreciably from the longitudinal direction of the sheeting element is twisted to form a string for a ball-striking implement.

Abstract: An apparatus for controlling a plurality of spinning stations by evaluating yarn signals based upon detection of approximately periodic variations in yarn cross section provides for conversion of the signals to digital form and application of the digital signals to a microcomputer in which the sum of the differences between the original yarn signal and a yarn signal delayed in time is continuously formed. Specific fault signals are produced from the summed differences which are checked against predetermined reference values.

Abstract: A spindle for double twisting with pneumatic threading, comprising a tubular stationary part coaxially positioned above a rotatable part containing a yarn passage conduit therein, the stationary part and rotatable part together forming a nozzle creating a venturi effect along the axial portion of the yarn passage conduit, a pressurized fluid feed conduit in the rotatable part, the stationary part defining a reception and distribution chamber in communication with the pressurized fluid feed conduit, a pressurized fluid transport conduit, a yarn clamp within the tubular stationary part and a pneumatically operated piston for overcoming the braking pressure of the clamp.

Abstract: The invention of this application relates to strings for game rackets which are formed of large monofilaments of thermoplastic, fiber-forming resin in which the monofilaments are twisted to form a bundle and two or more bundles are cabled and twisted in the opposite direction from the twist of the bundle, the composite string being oriented and heat set to prevent unravelling of the string. The strings are laced into a game racket such as a tennis racket under a tension of about 50 pounds to form a racket which has good playing properties as well as tensile retention and good resilience retention.

Abstract: The illustrated embodiment of my invention is a wrist watch having a watch case and a fixed seat outside of it. The watch case is movably mounted relative to the seat and is recessed within that seat. A spring normally holds the case in a rest position recessed within the seat. The case contains a quartz crystal, a circuit board, and an electro-optical data display at a window in the case. Manual actuation of a press-on member, specifically here a push button, against the resisting spring causes the case to move and thereby close a switch that causes the current time reading to appear on the display. Other displays occur successively if the case is soon enough manually moved part of the way back to its rest position and allowed to pop back up from there.

Abstract: A combined cycle electric power plant includes gas and steam turbines and a steam generator for recovering the heat in the exhaust gases exited from the gas turbine and for using the recovered heat to produce and supply steam to the steam turbine. The steam generator includes a superheater tube through which a fluid, e.g. water, is directed to be additionally heated into superheated steam by the exhaust gas turbine gases. An afterburner further heats the exhaust gas turbine gases passed to the superheater tube. The temperature of the gas turbine exhaust gases is sensed for varying the fuel flow to the afterburner by a fuel valve, whereby the temperatures of the gas turbine exhaust gases and therefore of the superheated steam, are controlled. Loading and unloading of the steam turbine is accomplished automatically in coordinated plant control as a function of steam throttle pressure.

Abstract: The pilot burner for a high M.sub.N inlet burner is folded to substantially reduce the overall length of the combustor. The annular burner includes a splitter design where a diffuser surrounds the burner and connects to an outer shroud which contains the inlet of the pilot burner. Flow reverses into the pilot burner where it is directed to the primary burning zone of the combustion chamber.

Abstract: A manifold for internal combustion engines is provided which has a unique insulation system for maintaining a skin temperature of the manifold below 400.degree. F. The manifold includes an exhaust conduit made up of axially spaced and aligned segments with provision for preventing excessive leakage of exhaust gases between the spaced segments. Each segment has an exhaust port extending at an angle thereto. Two or more members of corrugated or crumpled thin foil are concentrically arranged about the ports and about the conduit with air gaps between the conduit and the innermost member, between the port and the innermost member, and between each member. An outer casing is cast about the members and embeds the ends of the members therein. The foil from which the members are made is polished on the surfaces to be highly reflective thereby reducing the transfer of heat through the successive concentric members. A method of manufacturing the improved insulated manifold is provided.

Abstract: A system for controlling the acceleration and/or deceleration of a mechanical power drive having a rotatable power output element and a rotatable reaction element with a hydraulic or pneumatic brake mechanism connected thereto, in which a motor drive pump or other pressure creating device is connected by a fluid pressure line to the brake mechanism, and a bleed line with an electrically controlled valve therein is connected to the fluid pressure line for relieving the pressure delivered by the pump to the brake mechanism. An electrical system responsive to the rotational speed of the output element of the power drive controls the pressure creating means to control the acceleration and/or deceleration rate of the output element. An accumulator and a pressure responsive relief valve are preferably included in the system to assist in regulating the pressure delivered to the brake mechanism, and a dump valve and overload control device are normally included in the system.

Abstract: An automatic control system for a hydrostatic transmission having a control circuit receiving a control flow from a control pump which represents a speed of a prime mover and valve components including a single adjustable valve which creates a delta pressure signal to control the transmission ratio which controls the speed of the prime mover.

Abstract: A device comprising two oil reservoir tanks communicating with the two respective oil-hydraulic chambers of a tandem type master cylinder and also with each other through an upper and a lower interconnecting oil passage. One of the two tanks has a top opening for oil filling use and normally closed with a vented cap while the other tank is closed at the top and provided therein with an oil level detector means which comprises a stationary reed switch connected with an appropriate external alarm circuit and a permanent magnet vertically movable with the oil level in the tank to close the reed switch as the volume of oil stored is reduced to a predetermined minimum. With the device, even if one of the two oil-hydraulic lines connected with the master cylinder fails to function due to oil leakage, the other line can properly function without any pressure failure as, in the associated tank, a predetermined minimum volume of oil remains on account of the height of the lower oil passage.

Abstract: Mining deposits, e.g., coal fields, are consolidated by injecting therein a composition which includes (a) an aqueous dispersion of a vinyl polymer, (b) at least one water-soluble acrylic monomer, and (c) a curing amount of an in situ polymerization catalyst for the acrylic monomer(s) (b); and thence permitting the composition to cure, in situ, into an adherent, consolidating gel matrix for the loose deposit.

Abstract: A clothes washing machine which recirculates wash or rinse water from a surrounding tub into a clothes holding basket to reduce the quantity of water required for wash and rinse cycles. The fill level is controlled by an adjustable pressure-sensitive switch which senses the pressure level at the drain outlet located in the bottom of the tub in order to control water fill levels at the beginning of each wash and rinse cycle. The pressure-sensitive switch is reset preparatory to the initiation of each wash or rinse cycle of the tub by the low pressure existing in the tub bottom after the tub has been drained at the end of each wash and rinse cycle.

Abstract: A locking arrangement is described particularly for safe doors including a dial combination lock and a locking-bar mechanism having a plurality of locking bars movable from an extended locking position to a withdrawn unlocking position with respect to the door, the combination lock comprising a rotatably-mounted dial ring circumscribing the rotary dial and coupled to the locking bars to move them between their locking and unlocking positions, the combination lock including a lock-bolt effect when in its locking position to immobilize the locking bars and the dial ring at their locking positions.

Abstract: A lock system has a master-only lock which can be opened only by a master key and a subordinate lock which can be opened by a subordinate key and a master key. The master-key slot of the master-only lock is formed with a plurality of parallel longitudinally extending and inwardly projecting guide ridges and a plurality of parallel longitudinally extending and inwardly open variable recesses interleaved with and parallel to the guide ridges. The master key is complementarily shaped. The subordinate lock has guide ridges and variable recesses identical to that of the master-only lock, and in addition is formed with further variable recesses in which fit corresponding further ridges on the subordinate key. Thus, the subordinate key is of larger cross-sectional area than the master key so that it cannot fit into the master lock.

Abstract: This invention concerns finned tubes for use in heat exchanging whereby the fins have a generally T or Y shape. There is disclosed process and apparatus for making these Y and T-finned tubes whereby a smooth tube is subjected to a rolling process with notching rollers being arranged between rolling discs. Bending rollers can be used to form Y fins and, if desired these can be subsequently flattened into T-fins.

Abstract: A single step in the form of a heavy forward displacing forging operation is used to manufacture cylindrically bored ferrous-metal multiple diameter nozzles with an outside diameter of at least 22 inches, weighing at least 4,000 lbs. and possessing an exterior configuration comprising a round cylindrical base section of largest diameter with an outwardly-extending flange at one extremity, spaced second cylindrical section of smaller diameter, and an interconnecting and intercommunicating frusto-conical section.

Abstract: A method and apparatus for testing the impact strength of materials which is especially effective for testing the impact strength of fiber reinforced concrete.

Abstract: A pressure indicator rod is attached to a spring pressed piston mounted upon a cap for a plumbing line. The rod is entirely retracted in the absence of pressure to be protected from impact and to be shielded from vandals. The indicator rod is visible from any angle for ease of reading.

Abstract: In the illustrated embodiment, the amplitude of sinusoidal pressure varians in the test piece is adjustable even during operation by summing the sinusoidal volume variations in two piston assemblies whose relative phase is continuously adjustable. The eccentric drives for the piston assemblies may be coupled via a bevel gear arrangement whereby angular shifting of the intermediate gear about the common axis of the outer gears shifts the phase relation between the eccentric drives. A desired minimum resultant pressure may be maintained in the test piece by introducing a bias pressure value equal to or exceeding the amplitude of the pressure variation, and such bias pressure may be adjusted in response to any permanent deformation of the test piece to maintain the desired minimum resultant pressure.

Abstract: Volatile content of a sample is determined by volatilizing a portion of such content, taking weight measurements at uniform intervals during such volatilization after a preselected delay, obtaining differences between weight measurements taken at times separated by a predetermined uniform measure and processing such weight differences.

Abstract: In accordance with an illustrative embodiment of the present invention, the respective volume flow rates of a gas and a liquid flowing in a conduit are determined by measuring the total volume flowrate, the pressure and the temperature of the two-phase mixture at first and second spaced points in the conduit, creating a pressure drop in the conduit between the first and second points, and determining the respective volume flowrates of the gas and liquid utilizing the measured values of total volume flowrates, pressures and temperatures. The invention has particular utility in well testing.

Abstract: A composition is disclosed of an N-thiophthalimide, a resinous carrier, and a solvent. The composition is applied to a portion of an electrical apparatus which is exposed to a gas stream. The solvent in the composition is evaporated to produce a thermoparticulating coating. When the electrical apparatus overheats the N-thiophthalimide in the coating forms particles in the gas stream which are detected by a monitor.

Abstract: A temperature probe has a tubular sheath open at one end and a mounting body for mounting the probe in an operational location. The sheath is secured to the mounting body by means of a clamping member in screw-threaded engagement with the mounting body and trapping an olive encircling the sheath. The clamping member and mounting body are screwed together to compress the olive onto the sheath and form a fluid-tight seal between the sheath and the mounting body.