Abstract: Method of recovery of crude oil from oil bearing formations and/or sands especially where the oil in such formations have been partly exhausted or depleted and will flow into the wells drilled into such formations at a very slow rate or not at all due to the high degree of viscosity of the oil. The method comprises thinning the crude oil in the formation by introducing into the oil well a thinning fluid, such as a solvent or mixture of solvents that will flow into the formation and thin the oil in the formation sufficiently so that it will flow into the well. A further step is heating the solvent either before the solvent is introduced into the well or after it is in the well and pressurizing the well to increase the penetration of the solvent into the formation. One method of heating the solvent in the well is to introduce water into the well, allow the solvent to rise to the surface of the water and introduce sodium into the well to cause a reaction with the water for producing heat and pressure.

Abstract: Thixotropic compositions having initially relatively high viscosity which can decrease with time are prepared by admixing water and chloroform with an anionic surfacant, a cationic surfactant, an acid to adjust the pH of the aqueous phase to 4.5 or less, and a buffer salt. These compositions are valuable drilling fluids, fracturing fluids, and surfactant fluids for chemical flooding in tertiary oil recovery.

Abstract: Apparatus for fighting fires including a plurality of nozzles mounted on an aerial ladder and supplied with water under pressure which is directed onto the fire. Each of the nozzles is controlled from a remote position in a manner such that the direction of the water and the intensity of the water being discharged can be altered as desired.

Abstract: The above-ground growth of potatoes and like root crops are contacted with high voltage electricity several days prior to harvesting, the electricity desiccating the above-ground portion of the crops while not harming the tubers. A no-load voltage of about 20 kv with an energy density of about 11-15 kw/foot of width treated is effective. Low-bush blueberries, and like perennial crops, are pruned by contacting the above-ground growth thereof with electricity. Pruning, in the case of blueberries, is most effective when done approximately every other year in the case of blueberries, a no-load voltage of 10-20 kv with an energy density of about 2-3 kw/foot of width treated being effective.

Abstract: A power tool includes manually operated selector means for alternately establishing rotary-hammer and hammer-only modes of operation for the associated drill bit. The attachment is in the form of an elongated member having a longitudinally extending blind bore for receiving the drill bit; retaining means are provided for releasably mounting the attachment on the drill bit. An annular shoulder defining the mouth of the blind bore is in abutting engagement with another annular shoulder, the latter being arranged to receive impact blows from the hammer mechanism of the power tool. In one embodiment, this second mentioned annular shoulder is constituted by a tappet forming part of the hammer mechanism. In another embodiment, this second mentioned annular shoulder is an integral part of the drill bit. Impact blows are transmitted to the attachment only through the area of engagement of the aforesaid annular shoulders.

Abstract: There is disclosed a single wire multiple shot selective fire perforating gun for piercing oil field tubular goods, typically during the process of completing an oil or gas well. A switch in the gun electrically isolates an associated blasting cap and short circuits the terminals thereof until the associated blasting cap and perforating element are armed. A plurality of blasting cap-perforating element assemblages are vertically disposed on the tool with the detonation of one perforating element arming the next adjacent blasting cap.

Abstract: The device disclosed includes a housing which can be moved through the bore hole and anchored in the desired location for drilling a lateral hole. Located in the housing is a drill string guide or conductor having a bendable lower end. The conductor is movable to a position where its lower end is either inherently or forceably bent so that it provides a curved path leading toward the side wall of the bore hole. The conductor guides a drill string extending through the conductor to cause the drill string to drill a lateral hole in the side wall of the well bore. The drill string and conductor can be retracted into the housing when the lateral hole has been drilled, or a portion of the drill string may be left in the lateral hole as a drain pipe.

Abstract: Hydraulic jar comprising a housing, a piston axially movable within the housing, an anvil disposed within the housing, a hammer associated with the housing and means for maintaining the housing in a position with the hammer spaced from the anvil and then releasing the housing when the piston moves to a select, extended position.

Abstract: A raise type of earth boring drill in which the cutter assembly is detachably secured to the drive stem to permit replacement of the stem. The stem slidably engages a central opening in the cutter assembly, the cutter assembly engaging a shoulder on the stem which carries axial loads in the drill. The cutter assembly is detachably anchored by a plurality of bolts to a torque plate attached to the end of the stem for transmitting torque load to the cutter assembly, the bolts clamping the cutter assembly against the shoulder.

Abstract: A force measuring device comprises at least one gauge element which, at least, in some regions, is conceived as a spring element, the deformation of which changes the volume of liquid contained in a chamber delimited by the gauge element; the spring elements are equal to each other in every respect and so positioned that the spring characteristic is the same for all of them that the deformation remains in the linear domain of the spring characteristic and that the local change of volume of the chamber is proportional to the deformation of the respective spring element.

Abstract: A suspension for off-road vehicles having a vehicle frame supported on flexible wall, fluid distensible rollers through a plurality of support rolls rotatably mounted to the frame. Each support roll contacts at least one roller, the axes of the rolls being parallel to the axes of the rollers and positioned vertically offset by an angle between 5.degree. and 19.degree. measured from the vertical. Means is also provided for positioning the rollers relative to the support rolls and maintaining a preselected contact pressure therebetween, these pressures being adjustable to accommodate various road and operating conditions.

Abstract: This device is intended for remotely controlling the winder of safety harness webbing of vehicles, each winder comprising an unwinding member and a member for locking said unwinding member which is mounted on a movable component element of the vehicle body, and an inertia member adapted to control mechanically said locking member in conjunction with an electrically energized solenoid. This solenoid induces an electromagnetic force acting with a certain time lag and substantially in the same direction as the gravity applied to said inertia member, the retarded action of said electromagnetic force being responsive to the movement of said movable element of the vehicle body.

Abstract: An expandable ignition chamber within an upstanding cylinder is formed between its base and a massive free piston. Initial detonation of a combustible gas mixture within the chamber drives the piston upwardly to expose in sequence a series of vertically spaced gas inlets in the cylinder wall, through which the supply of gas is replenished to support a corresponding sequence of additional rapidly timed detonations. Repetitive seismic pulses are thereby supplied by the downward thrust of the base which is itself slidable with respect to the cylinder walls.

Abstract: Condensate accumulating in the combustion chamber of a marine gas exploder of the cylinder and piston type is collected by gravity flow in a sump formed in a cylinder side wall or in a face of the piston, depending upon whether the cylinder is oriented horizontally or vertically. One end of an exhaust tube is positioned adjacent the base of the sump so that gaseous combustion products flow through the sump into the exhaust tube so as to collect and remove the accumulated condensate.

Abstract: 1. An acoustical source for minesweeping operations comprising a stator ing outer and inner surfaces which are surfaces of revolution and an open port connecting said outer and inner surfaces, an external rotor adapted to be rotated around said outer surface of said stator and having outer and inner surfaces which are surfaces of revolution with at least one open port of non-constant cross-section connecting said inner and outer surfaces, said port being substantially larger in cross-sectional area at said inner surface than its cross-sectional area at said outer surface and, said rotor having appreciably greater thickness between said inner and outer surfaces than said stator; and drive means for rotating said rotor at a predetermined speed.

Abstract: A diaphragm type stethoscope for conveying sounds from within a patient's body to the ears of a medical examiner. A heating element is mounted within the hollow head of the stethoscope substantially adjacent the diaphragm member thereof for selectively heating the diaphragm member. A source of electrical power is preferably fixedly attached to the head of the stethoscope in electrical communication with the heating element to selectively activate the heating element.

Abstract: A chain-and-anchor system stabilizes a standard ladder being used on penetrable or impenetrable surfaces. A chain, secured at either end to one of the ladder rails is held taut by an anchor; at the same time, anti-slip devices prevent ladder from shifting. For use on penetrable surfaces, the anchor and anti-slip devices are penetrating spikes, while for impenetrable surfaces, a weight box is used as an anchor, while anti-skid material fastened to the ladder rail ends serves as anti-slip devices.

Abstract: A line securing device having a rigid rod with opposite end portions and being successively return bent intermediate said end portions to form a pair of workload supporting loops extending laterally of the end portions in one direction and a single line attaching loop extending laterally of the end portions in the opposite direction.

Abstract: A system for handling goods in selfservice shops, comprising a shopping trolley and a cash counter. The trolley comprises at least one basket consisting of a bottom and four side walls, one of which is pivotally connected to two opposite side walls of the basket and adapted to pivot from a lowered closed position to a raised open position. The cash counter includes a compartment corresponding to the size of the trolley and designed to receive the trolley, and control members co-operating with the trolley to move the pivoting side wall from lowered to raised position as the trolley is introduced into said compartment.

Abstract: An improved overhead heater assembly fixed to a rotating cafeteria type food service counter. The improved heater assembly includes infrared type radiant heater rod elements disposed concentrically above the counter's hot food section, the number of heater rods provided being equal to the number of step sections in the counter's hot food section. The heater rods are combined with radiant heat reflectors and heater switches in a single hood unit that permits varying the heat between the inner periphery and the outer periphery of the rotating counter as desired by an operator. Light bulbs interposed between at least two of the heater rods serve to illuminate the food positioned in the counter's hot food section.

Abstract: A looped strip connected to an elevator car is moved with the car and provided with floor indication cams at intervals equal to distances between adjacent landing floors. Immediately before the car already decelerated reaches a desired one of the floors, the corresponding cam engages one of two spaced switches to operate it. This instructs the car to further decelerate and the car is stopped on the desired floor upon that corresponding cam disengaging from the operated switch with the cam located between the switches in their inoperative position.

Abstract: A zoned demand elevator system in which elevator cars are associated with the zone in which they become available for assignment. Each zone has a plurality of graded assignment levels, with an available car entering the highest vacant assignment level of the associated zone. Available cars in predetermined eligible assignment levels of all of the zones are considered when an available car is to be assigned to a demand for elevator service. The order in which the various eligible assignment levels of the zones are considered is determined by the nature of the demand. When an available car is assigned to a demand, available cars, if any, in lower graded assignment levels of that zone advance one assignment level, and an undesignated available car waiting for a graded assignment level to be vacated is given a graded assignment level designation.

Abstract: A drum-type brake adaptive to front and rear-axle constructions on motorized vehicular equipment, in which braking torques are developed by one or more radially-operating caliper units positioned around the circumference of an open brake drum co-rotatable with the vehicle road wheel. The caliper unit comprises an inner and an outer segmental brake shoe which carry detachable linings, respectively, in spaced confronting relationship that straddle-mount the drum's flange to apply braking forces to opposite faces, respectively, thereof, and reciprocative mechanism including a pair of interengaging push-pull members projecting from the brake shoes, respectively, and slidably installed along the radius of the drum's backing plate.

Abstract: An annular carbon brake disk having cast metal keyslot reinforcement members which are shaped to intimately conform to the contour of the keyslots and to an adjacent surface area of the disk on each side of the keyslots. The reinforcement members are preferably investment castings of heat resistant stainless steel or other suitable metal and the walls of the reinforcement members are substantially thicker at the portion contacting the keyslot than at the other portions of the members. The keyslot reinforcement members may be used with either continuous or segmented disks.

Abstract: A locking device for a reciprocating rod brake actuator movable between brake applying and brake releasing positions includes a pivoted pawl movable between locking and releasing positions for releasably locking the rod in its brake applying position. A spring normally biases the pawl to its locking position, and a fluid cylinder is operative when pressurized for moving the locking device to its releasing position. The rod is movable toward and away from the pawl, and is normally supported against movement away from the pawl by a releasable support. Release of the support frees the rod for free movement between its brake applying and releasing positions even though the pawl is in its locking position.

Abstract: A portable salvage lift apparatus for use in an underwater environment coising a buoyancy system having a variable lift capability and a tethering system employing a brake whereby the rate of ascent of the apparatus is controlled.

Abstract: A roadway having at least one lane for traffic moving in one direction and at least one lane for traffic moving in the opposite direction is provided with power conductors for inductively coupling power to vehicles moving along the roadway. The conductors are embedded in the lanes and extend in the direction of vehicular movement. Power sources are provided along the roadway and the conductors are arranged so as to minimize the lengths thereof which are not directly employed for the inductive coupling of power to vehicles.

Abstract: A torque limiting clutch including driving and driven members maintained in driving engagement with rolling torque transmitting elements by spring means in which spacer elements are movable into spacing engagement with the driving and driven members on overrunning of the clutch while the torque transmitting elements are maintained within receiving means and in which the torque transmitting elements are free from pressure engagement with the driving or driven member, not provided with the receiving means, during overrunning of the clutch. The spacer elements may be in rolling engagement with the driving and driven members and one of said members may be provided with a track for the spacer elements which track is rotatable relative to said one member.

Abstract: A shear liquid fan drive assembly for radiator cooling system of an internal combustion engine of the type wherein a temperature responsive valve controls the degree of rotary coupling between the engine and a radiator cooling fan by controlling the quantity of shear liquid between a driving disc and a driven housing carrying the fan. The specific improvement relates to a modification for redirecting flow of shear liquid to inhibit breakdown of the shear liquid due to overheating.

Abstract: In a wheel hub clutching mechanism, a clutch ring to be meshed with a shaft driven pinion is resiliently connected by way of a connecting spring to a follower controlled by turning of a cam. The follower and the clutch ring are pushed toward the lock positions thereof by a compression spring when the cam is turned to its lock position by a manually operated handle and the clutch ring is retracted to the free position thereof together with the follower when the cam is moved to its free position by the handle.

Abstract: A lightweight and reinforced tubular concrete distributing structure having an integral hopper at one end as well as flexible means for supporting the same on a delivery chute to receive the discharge of the latter. The bottom wall of the hopper merges smoothly with the interior of the tubular structure and the plane of the top edges of the hopper is inclined to the longitudinal axis of the tubular structure.

Abstract: A strand guiding means has at least two framing parts arranged in pairs and opposite each other, which are connected by drawing anchors. Upon each of the drawing anchors an outer and an inner bushing, having corresponding helical sliding faces and an angle of inclination that is smaller than the pertaining angle of friction, are arranged. Each one of the inner bushings is rotated relative to the outer bushing by a pressure medium cylinder, whereby one of the two framing parts is movable and the strand guiding rollers accommodated by the framing parts are brought into and out of an engagement position.

Abstract: Typewriter correction materials employing adhesives including a base strip of light-transmitting material. A transfer strip having a coating of ink thereon is bonded to the base strip and a character-removing strip having a coating of an adhesive thereon is also bonded to the base strip in spaced parallel relation to the transfer strip. Another embodiment of the invention conceives of utlizing an adhesive on a tab while including in the concept the use of separate transfer ribbons arranged in a typewriter. Yet another embodiment conceives of employing an adhesive on the end of an applicator which is pressed against the typed error for removing the typed error from the material and being then pressed against an adhesive material having greater adhesive attraction than the used adhesive on the applicator.

Abstract: A device for equalizing the spacing of printed products, such as newspapers, comprises a plurality of spacers movable in a path parallel to the path of the products. Each of the spacers receives the leading edge of a printed product and is driven thereby to a braking device that causes each spacer to abut the preceding spacer. The printed products are carried by a conveyer belt system and a sill raises their leading edges ready for reception by the spacers. After leaving the braking device, the products are deposited from the spacers which are then returned to a magazine to receive further products.

Abstract: A vibratory parts feeder has a feeder bowl with a helical track originating at the bottom of the bowl and extending upwardly along the inner periphery of the bowl wall to an exit station at the top of the bowl. Articles can be progressively fed from the lower portion of the bowl along the helical track to the exit station at a given feed rate by vibratory energy. The feeder bowl and its mounting frame form a feeder bowl mass that is supported above a base mass by a plurality of inclined leaf springs. One end of each spring is connected to the feeder bowl mass and an opposite end of the spring is connected to the base mass. The leaf springs are arranged to move one of the masses vertically in response to rotational twisting of one of the masses relative to the other mass about a central vertical axis of the feeder.

Abstract: A conveyor apparatus for elevating loose bulk material from one level to another, as in self-unloading ships, and more particularly a dual belt conveyor-elevator having a relatively long horizontal feed section, and further including a belt take-up apparatus and system including a normal pressure mode for tensioning the outer belt of the dual belt conveyor-elevator under normal operating conditions, the belt take-up apparatus and system also including a high pressure mode which is connected in tensioning relation to the outer belt of the dual belt conveyor-elevator upon loss of motive driving power to the dual belt conveyor-elevator. The high pressure mode is capable of substantially immediately taking up slack which develops in the outer belt, particularly in the horizontal feed portion thereof, with consequent prevention of spillage of load material, when the driving power for the dual belt conveyor-elevator is interrupted.

Abstract: A modular conveyor particularly adapted for food processing installations including a plurality of pedestals arranged along a single line and removably connected to a plurality of aligned beams and laterally-spaced side rails to support a plurality of belt-supporting rollers. The conveyor can be adjusted to a cleaning position where the conveyor belt is opened for interior cleaning while still permitting the belt to be driven by its usual driving mechanism.

Abstract: A package having an improved means for releasably retaining the components of the package in assembly. Known similar package constructions require the use of additional material and necessitate the performance of additional manufacturing operations in order to provide closure flaps situated at opposite ends of a sleeve which is adapted to support a removable tray therein. The package according to the subject invention is of relatively simple construction, as well as being more economical than known similar packages. According to the subject invention, the improved package comprises a container and an enclosure having at least one open end. The container is adapted to be inserted into or removed from the enclosure through at least one open end thereof.

Abstract: In the match pack of this invention, the ignition or striking surface is positioned on an interior wall surface of the ignition chamber which is conveniently located on the bottom portion of the match pack below the match comb or combs in the match pack. The housing or body structure defining the ignition chamber is formed with at least one entry hole or passage which opens into the ignition chamber to enable a match to be inserted into the chamber for ignition. An ignition finger conveniently positioned on the closure flap or front cover of the match pack is insertable through a slot in the chamber-defining body structure to press the match head of the inserted match against the striking or ignition surface and to thereby facilitate ignition of the match upon rapidly withdrawing it from the ignition chamber.

Abstract: An article carrier for use in conjunction with fragile articles arranged in at least two rows of at least two articles each is provided with a partition insert structure arranged to afford double thickness separation between adjacent articles and includes a pair of vertically disposed main panels arranged in back to back disposition together with a horizontally disposed spacer panel foldably joined along its side edges of the bottom edges of the main panels by serpentine fold lines to establish pockets adjacent the articles for affording cushioning action. At least one partition strip may be interconnected with one of the main panels at one end thereof and to a partition panel at the other end thereof.

Abstract: A cartridge containing the inter-active components of a resin mix such as a polyester, epoxy or polyurethane, comprises tubular flexible containers, each containing an interactive component, the containers being sealed to prevent egress of their contents, the containers lying in side-by-side relation and preferably secured together by an adhesive such as a double sided adhesive tape.

Abstract: The device is primarily adapted for use in hospitals and comprises a housing having a front window through which a digital display of sensed temperature is observed. The housing may receive one of preferably two probe holsters one of which has associated therewith a probe for oral use and the other of which has a probe for rectal use. Each probe holster is elongated in shape and has a passage for receiving a probe with the probe being fixedly wired into the holster so that the probe cannot be swapped between holsters. A holder is mounted on the top of the device and receives a cartridge of probe covers which are locked into the holder but are easily removed upon insertion of the probe into an individual cover. The holsters and associated probes are constructed to be autoclavable and gas sterilizable. The device is normally stored on a platform through which the batteries in the device are recharged between use of the device. The probe is of improved design and employs a thermistor sensor.

Abstract: A knock-down building shipping package in which modules of a building are packed on skids and the skids stacked one upon the other with the weight of an upper module being transferred directly from its skid to a lower module skid.

Abstract: A fastener package, for use in a fastener applicator apparatus and comprising a disc shaped carrier and a plurality of fasteners, each having an elongated shank and a head. The shanks of the fasteners pass through the carrier and the under surface of their heads rest on the carrier. The disc shaped carrier is circular and carries the fasteners evenly spaced on a circular line along the peripheral portion of the circular carrier. Also disclosed is an inherently stiff support and guide body which is useful as a magazine in the fastener applicator apparatus and which has teeth or grooves for a step-wise turning thereof in order to advance the fasteners, one at a time, to an application position in the fastener applicator apparatus.

Abstract: A roll of a continuous strip of a non-woven fabric having on only one side thereof a heat actuatable adhesive, said fabric having at least one longitudinally running perforated line running parallel with a side edge of said fabric, said fabric being free of any surface interruptions other than perforated lines running parallel with a side edge and its use in garment manufacture.

Abstract: The ability of an open-ended corrugated-paperboard lamp wrapper to withstand compressive forces and retain an inserted frictionally-gripped lamp are both enhanced by orienting the corrugations so that they extend obliquely across the walls of the wrapper at an angle of from about 10.degree. to 35.degree. with respect to the transverse axis of the wrapper. The compressive strength of a single-lamp wrapper fabricated from single-face corrugated paperboard having corrugations offset by 20.degree. is increased by 19% and lamp-retention is increased by 20% compared to a conventional wrapper having corrugations that extend parallel to the transverse axis.

Abstract: A rack for shipping articles, e.g., automotive windshields has a pair of bottom edge supports pivotally mounted in spaced relation on the base to support the articles on an edge.

Abstract: This packet is so constructed as to prevent formation of liquid blisters at sealing areas, which are potential break points and which reduces the shelf life of the packet and does not look good and can cause loss of sterility. The packet has opposed walls which are sealed together at opposite sides and at one end, leaving the other end open for injection of liquid. The open end is lastly sealed. Capillary action of the liquid along the insides of the side seams of the packet can often reach the lastly sealed open end before sealing is accomplished, to cause a blister or weak point which can rupture. The present packet is provided with breaks in the side seams and below the top seam to delay capillary action of the liquid along the inside of the side seams from reaching the open end of the packet before said open end can be sealed, thus preventing formation of liquid blisters at the last sealed area of the packet.

Abstract: A container designed to stack with another container of identical construction at a plurality of different levels. The container is a full slide-on container, that is it can be stacked by sliding it horizontally over the full width of another container. A drawer or tray in the bottom of the container may be withdrawn by a horizontal sliding movement through the open front of the container.

Abstract: An information selection and retrieval system utilized in conjunction with multiple stored components constituting a bank of such components from which single components or group of components are to be both selected and retrieved by means of a magnetic selector mounted on a movable carrier. The magnetic selector adjusts relative to the stored components in accordance with an index guidance system.