Abstract: A panel with a counterweight for opening and closing and/or bridging an opening or a space. In a preferred embodiment the construction is such that when the panel is in its closed position, the counterweight lies substantially in the same plane as the panel and relative to the pivot the counterweight extends in opposite direction to the panel; when the panel is in the open position, the counterweight lies mainly in the same plane as the panel and relative to the pivot said counterweight extends in the same direction as the panel.

Abstract: An electrically driven motor operated belt sander is provided having a low profile and a center of gravity close to the sanding plane by passing the belt about three generally triangularly located belt drums with the motor disposed within the belt path and the motor and support mechanism being mounted to a one-piece frame or bracket which hangs the entire drive and support mechanism from the tool housing, the one-piece frame or bracket including a wear plate or strip which provides positive protection for the wiring between the operating trigger switch and the motor.

Abstract: The disclosed deployable lattice column includes a plurality of longeron elements connected together and reinforced by lateral elements including both diagonal members and battens. The diagonal members are cross-connected between laterally opposed points along the longerons and define a bay of the column by the spacing of their attachment points. Adjacent bays of the column substantially overlap each other. By this overlapping relationship, should one of the diagonal elements fail, the strength of the column is substantially maintained by the adjacent, overlapping diagonal elements. Preferably, the longeron elements are integral, coilable elastic members.

Abstract: A high strength, modular screw anchor is disclosed which exhibits enhanced failure resistance notwithstanding use of essentially the same amount of material as conventional anchors, and which can be installed using existing installation equipment. The preferred screw anchors of the invention include an elongated rod having one or more separate, specialized anchor members supported thereon, and an improved, obliquely oriented, beveled earth-penetrating lead to facilitate installation, particularly in rocky soils. The anchor member includes a tubular, central, rod-receiving hub presenting a polygonal in cross-section bore therethrough, and an outwardly extending helical blade affixed to and coaxial with the hub.

Abstract: An earth-sheltered structure having a foundation wall comprised substantially of wood. The remaining structural members that contribute towards supporting the structure are also comprised substantially of wood, including a ceiling-to-wall juncture that makes use of stud-supported notched ceiling joist members.

Abstract: The insulated outer coating of walls of building structures includes a cured foamed insulation material applied in a flowable state and an outer plaster means. Metal plates forming the moulding form for the injected foamed insulation material are connected by means of threaded bolts with the wall of the building structure, whereby a space is defined between the outer surface of said wall and the inner surface of each metal plate. A flowable insulation material containing urea-formaldehyde is injected into this space and cured therein. Each metal plate comprises protrusions and perforations. The perforations extend through the protrusions as well as through the metal plate. The plaster material applied on the outer face of the metal plates penetrates in its flowable state the penetrations and when cured in anchored by means of the protrusions and the penetrations.

Abstract: This disclosure relates to an insulating system which is particularly adapted for insulating the walls, floors, ceilings and like structure of buildings and includes a panel having a hollow chamber or interior under negative pressure (vacuum) and being of a variety of external peripheral sizes and shapes to fit within areas defined by wall and/or floor and/or ceiling studs, beams, or the like, a plurality of springs, chains or the like for supporting the panel in generally spaced relationship to an associated building wall, ceiling, floor or like structure, and a plurality of pin-like elements of relatively small cross-sectional configuration normally spaced from the exterior surface of the panel for contacting a limited exterior surface area of the panel only upon the springs, chains or the like becoming inoperative which would in the absence of the pin-like elements result in direct contact between the panel and the associated building wall, ceiling, floor or like structure and thus reduce the insulating ef

Abstract: A panel (10, 60) applicable to siding, soffits and related construction elements used as coverings for houses, buildings and like structures includes new, improved intercooperating gripping portions (18, 28 and 62, 64) at first (16) and second (26) edges for effectively locking panels of successive courses. The gripping portion at the first edge comprises a nail hem of double thickness for nailing the panel to an adjacent structure and there is an insulative layer (66) providing a wind resistance medium.

Abstract: A masonry wall is formed of a plurality of masonry blocks, i.e., bricks, with mortar, therebetween and in which spacing of the bricks from each other, both vertically and horizontally, is dictated by plastic spacer elements. The spacer element includes a plurality of connecting struts joined together in a common plane or in planes which are perpendicular to each other. Spacer fingers or protrusions protrude in opposite directions from the struts so as to contact the adjacent surfaces of the blocks and dictate the spacing of one block from the next, accordingly. The spacer elements remain embedded in the mortar.

Abstract: The multi-paned window is provided with an insulating element made of plastic film. The film is bi-axially stretched within the window frame by a clamping means in a uniform manner. The clamping means employs elongated elements which cooperate with each side of the film along an arcuate line so that in a clamped state, the film is caused to stretch bi-axially. The elongated elements may fit together as a frame or may be separate from each other.

Abstract: This invention provides an apparatus for transferring a strip-like plastic bag material in a packing machine. The apparatus comprises a pair of intermittently operated pinching rollers for intermittently transferring the bag material, said bag material comprising a series of interconnected bags each having a heat-sealed bottom portion with a flap-like margin, a mechanism for raising said flap-like margin during transfer of said bag material, a microswitch for detecting said bottom portion, said microswitch having an elongated contact adapted to be releasably engaged with said flap-like margin as said flap-like margin is raised during transfer of said bag material and means for stopping said bag material in response to detection by said microswitch of said bottom portion.

Abstract: Apparatus for making a yarn comprises two juxtaposed, closely spaced apart suction drums which rotate in the same sense and a delivery duct which protrudes into the triangular space between the suction drums and has an exit adjacent to the suction zones and serves to deliver through said exit singled covering fibers to a drawn roving, which has been delivered by a drawing frame disposed to said triangular space at one end thereof. The yarn thus formed in the triangular space between the suction drums is withdrawn by withdrawing means disposed from said triangular space at the other end thereof. In order to improve the wrapping of the roving with the covering fibers, the surfaces of the suction drums are rough and have a microstructure which will prevent a positive coupling to individual covering fibers and has a peak-to-valley depth up to one-half of the yarn diameter.

Abstract: A filament yarn of greater than 60 percent extensibility is combined with a carrier yarn. The combined yarn is false-twisted under tension in a unit employing rotary friction elements so that the filaments of the extensible yarn break intermittently while the carrier yarn remains intact to produce a spun-like textured yarn. The tension during false-twisting may be increased to a level at which the broken filaments snarl and form slubs in the yarn. The process may be carried out with no heat setting of the false-twist to form crimps. Suitable extensible yarns include undrawn and partially-orientated yarns, polyamide and polyester yarns, and suitable carrier yarns include fully-drawn filament yarns and spun yarns.

Abstract: A process and apparatus for lubricating a ring traveler of ring spinning or ring twisting frame is disclosed in which lubricant is supplied to the ring traveller (18) and to the contact surface between the spinning or twisting ring (12, 16) and the ring traveller (18) from a lubricant store (24), which is disposed on the inside of the spinning or twisting ring (12) and which is provided on its upper side with lubricant outlet openings. The air current which rises during the spinning or twisting serves to convey the lubricant. Such lubrication makes it possible to operate the ring traveller (18) at a greater rotational speed, without increasing its wear. The productivity of the machine is thus increased by this a greater rotational speed.

Abstract: An open end spinning machine includes a plurality of spinning units. Each spinning unit includes a first yarn breakage sensing device assuming a yarn sensing, operative position, in which it contacts the yarn, when the spinning unit is in a normal spinning operation and an inoperative position, in which it is not in contact with the yarn, when the spinning unit is in a transient condition either from or to the normal spinning operation, and a second yarn breakage sensing device assuming a yarn sensing position at least when the spinning unit is in the transient condition. Upon occurrence of yarn breakage when the spinning unit is in the transient condition, such breakage is detected by the second yarn breakage sensing device and the supply of fibers to the associated spinning unit is interrupted by the second yarn breakage sensing device.

Abstract: There is described a two-for-one twisting spindle having a supply receptacle for a lubricant arranged in a base of a protective pot, a region of an outer circumferential surface, of the protective pot, over which the revolving thread passes when the spindle is operating, communicating with the supply receptacle in such a way that lubricant is brought to the said region of the circumferential surface. Thereby the supply receptacle is in a stationary part of the spindle, so that lubricant content in the receptacle has no inertial effect on the running of the spindle. The arrangement enables consistent but not excessive wetting to be provided for the thread without the thread being subjected to undesirable stresses while the spindle is operating. In the arrangement shown, a protective pot 4 has a sidewall 5, over which thread 16 passes when the spindle is operating, and a base 7 having a cavity holding a supply of lubricant 10.

Abstract: There is described a stator section, for a spindle which has a spindle rotor at least partly enclosing the stator section, wherein the stator section incorporates, in the region occupied by surfaces situated opposite the spindle rotor, a dust and thread catching means. To provide this means, parts of surfaces of the stator lying opposite the rotor may be roughened. For this purpose the stator may be provided with grooves having mechanically-roughened surfaces or may have wound around it a strip of Velcro or strip of some other material, whereby the foreign bodies which are carried by the air, which flows through the rotor on the counter-current principle, collect on the said roughened parts of the surface of the stator or on said strip, as a result of which the foreign bodies are prevented from reaching the region occupied by a spindle bearing arrangement.

Abstract: A liquid fuel supply system for an engine having a power demand adjuster, e.g. a manually operable control acting in conjunction with operational factors associated with the engine to determine fuel flow to the engine, in which apparatus is provided responsive to failure of part of the fuel system to cause an auxiliary to become effective to control fuel flow to the engine in accordance with the setting of the power demand adjuster, the arrangement being that for any setting of the power demand adjuster the fuel flow to the engine will not alter instantaneously when the auxiliary becomes effective to control fuel flow. It may be arranged that the relationship between fuel flow to the engine and the setting of the power demand adjuster may alter within a short period after the auxiliary has become effective.

Abstract: The disclosure is of a system for operating a turbine without production of steam by compressing a gas, supplying the gas to the turbine, and returning the reduced pressure gas to the compressing means.

Abstract: An apparatus and method of controlling the input power to a drill feed or other hydraulic system in which the hydraulic power source is obtained from a compressed air supply. Wherein, the flow of air is varied in response to a hydraulic signal controlled by the load demand of the hydraulic system. Low and high mode controls are provided to operate hydraulically actuated mechanisms; and a hydraulic absorbing load is imposed to prevent stall or overspeed of the pump and motor during low load conditions.

Abstract: A method and a device for recovering energy from a supercharged internal-combustion engine by producing a complementary amount of energy from a system operating on a Rankine cycle, includes preheating the working fluid used in the Rankine cycle through heat exchange with the air issuing from the compressor of the supercharger of the internal-combustion engine.

Abstract: The invention relates to a tank designed to contain a liquefied gas, constituted by the tank proper, by a feedpipe, and by a valve closing off said feedpipe.Said tank is provided with a heat-responsive device controlling the valve, whose temperature responsive element is placed inside the tank, close to a preset filling level and whose effect is to place the valve in a configuration where the feedpipe is completely closed off, when the pre-set filling level is reached, and in a configuration where the feedpipe is open, when the pre-set filling level is not reached.The invention finds an application in methane tankers where the tanks are filled to the top.

Abstract: An air cycle refrigeration system in which cabin exhaust air is utilized to regeneratively cool the pressurized working fluid before expansion thereof through a cooling turbine and introduction in the cabin.

Abstract: A cooling system particularly suitable for use in the air-conditioning of buildings is described. The system includes:(a) A cooling zone containing a conduit for cooling fluid, the conduit encountering the heat load, means in the conduit for propelling the fluid through the conduit, and cooling fluid in the conduit;(b) A refrigeration zone containing a closed refrigeration circuit for refrigerant, chiller means in the circuit for extracting energy from the refrigerant, means for circulating refrigerant in the circuit and refrigerant in the circuit; and(c) Collection means connected to the refrigeration zone for removing energy extracted by the chiller.The cooling and refrigeration zones are connectable through a heat exchanger for transfer of energy between the fluid and the refrigerant and the refrigerant comprises a slurry of ice and water which may be partly stored in a reservoir constituting part of the refrigeration zone.

Abstract: An adjustable necklace of a type in which a length of chain has first and second ends which are each anchored in one of a pair of adjustment elements with a segment adjacent the other end passing through the adjustment element to be resiliently held in position to effect a given adjustment. The adjustment elements each include first and second mating members which enclose an anchor for one end of the chain, a resilient frictional member, and first and second mating housing members having mutually interlocking means permitting rapid assembly with an absence of a soldering operation.

Abstract: Disclosed herein is a universal joint yoke 1 having a rotational axis Y--Y and an opposed pair of arms 3 with bores 9 having a common axis X--X; the sectional shape of the arms in that plane perpendicular to the rotational axis Y--Y and passing through the common bore axis X--X having end portions 10 inturned towards the rotational axis Y--Y so that a greater depth h of bore may be obtained than the bore depth h' of a yoke of equivalent radial size formed from the same thickness material e and having arms 16 wherein the corresponding section is part circular.

Abstract: A universal coupling (40) for joining two rotatable shafts (42,43) in driving relation includes a pair of opposed yoke members (48,49) connected together by a multi-legged spider element (51). The ends of the spider legs (52) are journaled within bearing caps (60) which are secured to yoke flanges (56) by bolts (67). Each of the caps carry a pair of tapered keys (70) which seat in a pair of keyways (71) defined in the yoke flanges when the caps are fixed thereto. The keys (70) and keyways (71) are aligned on the bores (64,65) through which the securing bolts extend.

Abstract: A sealable container for paint dissolving and cleaning fluids for storing and cleaning a paint roller cover sleeve. A central post having an enlarged foot at the bottom thereof for engaging the inside bottom wall of the receptacle such that a paint roller cover is coaxially received over the post and rests on top of the bottom foot of the post to provide sediment clearance space at the bottom of the container and to additionally provide a handle at the top of the post for removing the post from the container together with the paint roller cover sleeve without having to directly handle the sleeve. A drain position is provided at the upper end of the container so that the foot of the post may rest at the drain position to permit the remaining fluids contained within the roller cover sleeve to drain back down into the container.

Abstract: A wheel blank consisting of a circular flange surrounded by a split rim, is placed inside cylindrical conformers having external faces reproducing the profile of the wheel rim, and thereafter a ring consisting of suitably connected coils gives the possibility to subject the split ring to a magneto-forming flux.

Abstract: The machine has a base provided with three rollers between which cambered strip steel is passed to remove or reduce the camber therein. Two of the rollers are mounted extending above the top surface of the base along a longitudinal axis of the base. The third roller is mounted also extending above said top surface on a block which is slidable along a slot extending along the lateral axis of the base. The cambered strip steel is passed across the top of the base between the three rollers. A drive mechanism is provided to apply a force to the third roller which bends the cambered strip steel against the two rollers to remove or reduce the camber. Removable guide strips of a case hardened or other suitable metal are provided in the top as bearing members for the strip steel. The base may be fabricated of assembled components or cast as an integral member for cost economy.

Abstract: A method for rolling a steel section having flanges or flange-like portions from a steel bloom of rectangular cross section in a rolling mill having a train of roughing rolling stands for roughing, a universal rolling stand with a pair of opposing horizontal rolls and a pair of opposing vertical rolls, and a train of finishing rolling stands for finishing.

Abstract: Guiding unit protecting against the whipping motion of a free pipe end in a pipe straightening is provided for, which comprises hinged sections of a piece of plastic pipe.

Abstract: The discharge roll table comprises a plurality of rollers for receiving extruded bar or tube. A top cover extending along the table above the rollers is of substantially inverted V-shape cross section and is divided along the top edge into two half covers pivotable to the left and right of the table respectively. Each half cover is divided into cover sections aligned end to end and is connected at an angle to lifting devices arranged between the rollers. Thus the extruded product may be lifted to the left or right of the table, which may be substantially the same length as the extruded product.

Abstract: An apparatus for detecting knock for an internal combustion engine having a plurality of cylinders in which a vibration sensor is attached to each cylinder and a peak value of vibration detected by the sensor is sampled over a predetermined range near the top dead center. The sampled value is converted from analog to digital and stored for a predetermined number of sampling times to obtain the average value for each cylinder. Then the frequency of occurrences in which the ratio between the sampled peak value and the average value exceeds a reference value is obtained, and the knock is determined when the frequency of occurrences in any one cylinder exceeds a predetermined value or when the average frequency of occurrences of the all cylinders exceeds another predetermined value.

Abstract: A method and apparatus are described for the determination of the mass and ocation of fragments from a warhead. The fragments are caught in a stack of soft panels placed in the line of fire. Each panel is then fed thru a reading device including an array of magnetometers and the data fed to a reduction computer.

Abstract: The present invention relates to a process for determining the rheological properties of fluid, consisting in completely filling a space located between a body constituted by a double cone of vertex angle 2.alpha.,.alpha. being smaller than 90.degree. and a biconical surface, of the same axis as the axis of said double cone, of vertex angle 2.beta.,.beta. being equal to or smaller than 90.degree., then said material is subjected to strains by driving said double cone or said biconical surface around the common axis. The non-driven element remaining fixed, said drive being effected with the aid of a device by which either a speed or a torque is imposed, according to a known program, on the driven element, and the parameter--speed or torque--which is not imposed is measured. The invention also relates to an apparatus for carrying out said process.

Abstract: A system for indicating the presence of fuel penalties brought on by inefficient power plant components or degradation in performance of components. The system is adapted for use especially in marine applications and includes strategically located continuous operating sensors, the information from which is sampled and analyzed to produce an output representative of the plant efficiency at that moment. The outputs include indications of fuel use per hour, fuel consumption per distance traveled, and power plant efficiency. A plurality of secondary inputs are provided giving indications of the plant operating pressures, temperatures, etc. When a fuel penalty is indicated, the secondary inputs are evaluated to determine any significant change in output levels thus giving evidence as to the location of the source of the fuel penalty.

Abstract: A Karman vortex type flow measuring apparatus comprises a conduit (2) for a fluid whose flow rate or flow velocity is to be measured, and a columnar vortex shedding member (3) extending within the conduit transversely of the fluid flow direction. Frequency of the vortex shedding is detected by a detector (6) whose output electrical signal is compared by a comparator (20) with a slice level signal, to generate a pulse train which is synchronous with the vortex shedding frequency. The slide level is variable in response to fluctuation in the output electrical signal of the detector (6). A highly accurate measurement can be achieved even when the vortex shedding is unstable.

Abstract: The method of testing the condition of a turbocharger in a turbocharged internal combustion engine by the steps of allowing the engine to decelerate from a high idle speed to a low idle speed, measuring the speed of the turbocharger shaft as the engine decelerates, determining the slope of the D/N vs. N characteristic, where N is the turbocharger shaft speed and D/N is the absolute value of the turbocharger acceleration divided by turbocharger shaft speed, and comparing the computed slope with a predetermined nearly zero slope of a normal turbocharger to see whether the turbocharger is bad due to excessive sliding friction.

Abstract: A circuit mounted on a rotatable wheel of a vehicle varies its resonant frequency in accordance with tire pressure or another parameter measured on the wheel. The path traveled by the resonant circuit as the wheel turns extends along a coil mounted on the adjacent non-rotatable structure of the vehicle. A magnetic field is produced by the coil when excited by a cyclically varying interrogation signal and the force field interacts with the resonant circuit to the extent that its frequency matches that circuit's resonant frequency. The combined impedance of the coil and the resonant circuit thus vary with the frequency of the interrogation signal to indicate the inflation pressure. The coil may be a ring formed by a circular array of loops each wound about an axis that extends toward the path of the resonant circuit, by one or more elongated loops or a combination of coils that produce a similarly confined and directed field.

Abstract: The invention makes it possible to determine impressions independently of a core cutting machine.A hooking device makes it possible to lower the assembly by a simple cable owing to the provision for an additional mass. The position of the eccentric is ascertained by the penetration of pointed rods into a disc under the pressure of one or more of several feelers which releases the rod carrier.The device may be used for the precise determination of the line of greatest slope relative to the impressions even for inclines varying from the vertical by less than 10.degree..

Abstract: A device for metering the angular position of a direction indicator, such as a wind direction indicator (10) mounted rotatably about an axis. The said device comprises the reference member (18) mounted rotationally about said axis and having driving means (44) for continuously rotating the reference member in a predetermined direction. The reference member (18) includes radiation beam directing means (46, 47) rotating with said reference member (18) so as to direct once each revolution a reference radiation beam and a measuring radiation beam from a radiation source (45) to a first radiation sensing means (26) and to a second radiation beam directing means (48) respectively. The said second directing means (48) is rotatable with the direction indicator (10) and adapted to direct the measuring radiation beam received from said first directing means (47) to second adjacent sensing means (14) generating a measuring signal when exposed to radiation.

Abstract: By detecting the instant of a selected zero-crossing of a received ultrasonic signal rather than relying on the instant the amplitude of that received signal exceeds a predetermined reference amplitude in excess of zero, a transit-time measuring instrument can be realized which is free from the measurement errors normally arising from acoustic signal attenuation in the medium through which it passes.

Abstract: Steering and focusing acoustic beams in ultrasonic echoscopy, and in other acoustic techniques, can be effected using linear arrays of acoustic transducers. The focusing and steering can be improved by using linked delay lines connected to the transducers when the transducers operate in a receive mode, with delay values which are both linear and quadratic values of the distance of the respective transducer from the center of the array.

Abstract: A method and apparatus for measuring the thicknesses of a cladding layer and a base metal layer by applying ultrasonic waves on the side of a sample opposite the cladding layer. The reflected waves are sensed and displayed on an oscilloscope. Using a disclosed technique for eliminating noise and interference, the position of the interface between the cladding layer and base metal layer are measured from a pulse produced due to the discontinuity of acoustic impedance at the interface.

Abstract: Device for measuring the speed of a fluid in a tube which comprises two uasonic electro-acoustic transducers in the tube; means for energizing these transducers by first and second transmit pulse groups; means for receiving first and second receive pulse groups at the transducer output; means for measuring a first delay between the start of the first transmit pulse group and the start of the first receive pulse group and a second delay between the start of the second transmit pulse group and the start of the second receive pulse group; and means for measuring a third delay between the starts of the first and second receive pulse groups. The flow rate is proportional to the quotient of the third delay by the product of the first and second delays. These delays comprise an integer delay part which is measured by clock pulses counting and fractional delay parts which are measured by constant current integrators.

Abstract: A sealing apparatus useful for sealing an injection block of gas chromatograph includes means for controlling the position of a sealing body with respect to the sealing face of such an injection block.

Abstract: A static load is reciprocated vertically by a crankshaft connected to the load by a wrist pin at one end of a connecting rod. Bearings are interposed between the wrist pin and the load and also between the wrist pin and the connecting rod. The wrist pin is rotated about its central axis by a chain drive from the crankshaft.

Abstract: When a machine element having a large mass is given a reciprocating movement, the recurring changes in speed as well as direction of movement require that very great driving forces must be applied, which cause varying stresses on the driving unit. In case the movement path of the machine element is more or less vertical the force of gravity causes extra stresses on the machine element. These difficulties are overcome in accordance with the invention by providing a spring system which on the one hand equalizes the effect of the force of gravity on the machine element and, on the other hand compensates the arising mass forces by absorbing, storing and emitting energy following the movement of the machine element. Hereby the amount of applied driving force is reduced, so that shocks and vibrations occurring during the driving are effectively reduced.

Abstract: A clearance adjusting mechanism comprises a first member having an external thread, a second member having an internal thread screwed with said external thread of said first member, and a locking coil for locking the relative movement between said first and second members only in case of a predetermined rotation direction thereof.