Abstract: An end surface machining apparatus is provided, wherein an end surface of a first workpiece is machined with a second workpiece being inserted into the first workpiece. First and second in-process gauges are engageable at their feelers with the end surface of the first workpiece and a reference end surface of the second workpiece during machining, respectively. A feed device is provided to move a work support toward the tool in the axial direction of the workpieces. A control device, controllably connected to the feed device, is responsive to output signals from both the in-process gauges, so that the end surface of the first workpiece is machined to have a predetermined size difference relative to the reference end surface of the second workpiece.

Abstract: Apparatus and method for surface finishing of parts or workpieces by attrition, in the presence of a liquid vehicle, with loose, comminuted, granular, or particulate solid finishing material or media, comprising relatively large finishing particles, i.e., chips, is described. The apparatus comprises a finishing chamber having a containing surface comprising an upstanding wall and a bottom symmetrically arranged about a common axis, being relatively rotatable about said axis, and having apposed closely-spaced surfaces, with a resilient seal having correspondingly apposed elements therebetween, the apposed elements of said seal being in closely-spaced apart or touching relationship and the surface of at least one of said apposed seal elements being irregular. The bottom, e.g.

Abstract: An apparatus such as a belt sander including spaced apart rolls and adjustable mounting means for supporting at least one roll. An endless belt is positioned around the rolls and drive means are provided for the rolls and belt. Alignment means including a belt edge engaging means are operatively connected to the roll mounting means, and a resilient force is applied to hold the engaging means against a belt edge as the belt is moved by the drive means. This causes the engaging means to follow variations in the belt edge position, and this movement is transmitted to the mounting means whereby the variations are compensated.

Abstract: Apparatus for machining an extremely large and very heavy workpiece, such as a runner of a hydro-turbine machine, in situs. The hub of the hydro-turbine runner is utilized as a support for a rotatable beam which is arranged to carry a depending grinding or cutting tool in position to machine the wear ring surface of the turbine. Positioning of the grinding tool both in a vertical direction and a radial direction is effected to control the grinding operation. The power drive grinding tool is bodily rotated around the wear right by rotating the entire supporting beam around an axis which is concentric with the axis of the runner.

Abstract: A sanding or buffing attachment for a power tool has a cylindrical resilient base with abrasive material on its exterior. Securing plates sandwiching the base have co-operating hollow spindle portions and means for gripping the resilient base.

Abstract: A prefabricated wall structure that is used in pairs to define a confined space therebetween in which a beauty operator may perform work on a patron, with each of the wall structures capable of being removably secured to a vertical and horizontal structural member that are in turn affixed to a wall and floor of a building in which the business of a beauty salon is carried out. Each wall structure includes a first mirror, lighting means, and numerous drawer means to removably hold all the accessories a beauty operator may need, and also wells in which bottles of liquids such as lotions and the like that may be needed by the operator. When the accessories are not in use they are held in concealed positions within the wall structure. The pair of wall structures have a mirror extending therebetween and preferably at least partially support the same, with the mirror adjacently disposed to the portion of the wall of the building most adjacent the pair of wall structures.

Abstract: A unitized and prefabricated prestressed roof and ceiling subassembly which employs a first substantially flat sheet of material which serves as the ceiling of the structure and a second relatively flat sheet or layers of sheets of material of width equal to the first sheet of material and of greater length wherein the second sheet or the second layer of sheets of material are bowed into an arc of chord length equal to the first sheet of material and wherein its edges are attached to the edges of the first sheet of material to provide a unitized prestressed roof and ceiling structure. The arch height to span length of the assembly is preferably within the range of from 5 to 10 percent. A plurality of the subassemblies can be joined at their ends and edges to form bays and adjacent bays of a building structure.

Abstract: A swimming pool wall is formed of interconnected panels extending a substantial distance along the pool wall and upward for only part of the height of the wall which is formed of at least 3 tiers of panels. The panels are formed of resin material to have an inward facing wall and flanges extending outward along top, bottom, and end edges. The top and bottom flanges have mating tongues and grooves extending along the length of each of the panels to interlock the tiers together, and the flanges are connected to hold the tongues and grooves together. The flanges at the ends of the panels are interconnected and arranged so that the end joints in one of the tiers are located in central regions of panels in an adjacent tier. A strengthener is fitted into a tongue and groove relationship with the lowermost of the bottom flanges to extend across end edge joints for strengthening the bottom tier.

Abstract: A fastening device for double-skin foam-core composite roof panels which present interfitted outer connectors spaced upwardly from the exterior surface of the panels, and interfitted inner connectors at the interior surface of the panels. The fastening device includes an upper end confined within the outer connectors, a base extending laterally of the upper end and overlying an exposed core surface, and a flange extending through the insulating core to the inner skin. A fastener extends through the base, the insulating core and the inner skin to secure the adjacent roof panels to a structural member.

Abstract: A thermal enclosure for use as a furnace having non-structural pads of pliant, low density material made of randomly interwoven ceramic fibers that form a continuous insulating layer overlying its interior surface. The pads can be interlocked along their edges and are held in place by hangers secured to the walls. Each hanger includes a pin driven into the wall, a plurality of vertical rods that extend into the pads and a cross piece that ties the rods to the pin. Since the hangers do not extend all the way through the pads, they are insulated from the interior furnace temperatures.

Abstract: A building wall utilizes a pair of cementuous blocks having a thermally insulating space therein-between The blocks are fastened together by tie rods whose ends are secured in the spaced apart blocks. The portion of the rods extending between opposed lateral surfaces of the blocks have a portion of the length thereof formed into a "V" shape for concentrating water condensation trapped in the space between the blocks permitting the condensation to fall freely downwardly in the space. The blocks may be fabricated in conventional modular sizes or may be precast into any desired size such as an entire wall. Devices are provided for centering and locking together sets of blocks utilizing a tongue in groove arrangement in opposed horizontal marginal edges of one or both blocks.

Abstract: Methods and apparatus for installing insulation, wherein insulation is delivered into vertical wall spaces formed between a permanent wall at one side and a plastic membrane at the other side, the permanent wall and the membrane being supported by vertical members such as studs. The membrane forms a vapor barrier over the wall area, and is covered by wallboard such as sheetrock or paneling, or the like. To prevent sag of the membrane during installation of the insulation, a shield plate is held against the outer side of the membrane during the time that the insulation is being delivered into the space between the permanent wall and the membrane.

Abstract: An apparatus for controlling the feeding of cases into an article handling machine from a moving conveyor which feeds a continuous line of cases thereto. The apparatus includes an abutment carried in the path of flow of the cases. The abutment extends above the conveyor for engaging a front end of a first case of said line of cases stopping the forward movement of the cases on the conveyor. A movable post is carried below the front end of the case and is selectively raised for lifting the front end of the case over the abutment so that the case can be indexed forwardly on the conveyor and into the article handling machine.

Abstract: A sterilizable package or pouch is made from a plastic member, generally transparent, which is marginally heat sealed around three sides to a paper member so as to leave an opening at one end for inserting the package contents. The paper member has a portion which extends beyond the area to be enclosed by the marginal heat seal when completed. This portion bears indicia, generally printed on the paper, that changes color upon sterilization (either steam or gas sterilization). The indicia bearing portion is adapted to be separated from the package and inserted therein together with the package contents before the marginal heat seal is completed and the package contents are sterilized.

Abstract: A method and apparatus for bagging bruisable discrete articles, such as apples. The apples are fed single file to a weighing device, and the feed of articles is terminated just before the desired predetermined weight of apples to be bagged. The weighing device is allowed to reach equilibrium, and then the weight of the apples is compared to the desired predetermined weight. If the weight is less than the desired amount, the apples are fed one by one to the weighing device until the predetermined weight is reached or exceeded, at which time the apples in the weighing device are dumped onto a pair of spiral brushes which convey the apples to a bagging station. At the bagging station, a bag is clamped and blown open, and is filled with apples being fed one at a time. The bag full condition is automatically sensed, at which point one of the clamps is released, and an arm supporting the other clamp is pivoted to swing the bag into operative association with an automatic tying machine.

Abstract: The apparatus includes an L-sealer and a supply of folded film which is fed across a horizontal table to the vicinity of the sealer, where a product to be packaged is placed between the upper and lower sheets of folded film. The sealer is then operated to hold closed the open side of the film opposite the fold and thus to form a bag which is closed, but not sealed, on three sides.The edge of the table facing the open end of the bag is provided with a vacuum chamber which is operated to remove air from the bag, whereupon the L-sealer is operated to complete the sealing of the bag and the severing of the bag from the film supply.

Abstract: A metal plate secured to a stirrup strap includes a pair of offset prongs for extending through spaced openings in a saddle strap, for fastening the stirrup strap to the saddle strap, and a central plate extension between the prongs prevents accidental removal of the fastener and aids the release of the fastener from the strap.

Abstract: An aquatic plant sampler which includes an aquatic craft characterized by a plurality of pontoons secured to a flat deck member and propelled and steered by a dual power system including an above water air propulsion system and an underwater, inboard, outboard or inboard-outboard propulsion system. The aquatic plant sampler is further characterized by a sampling bucket fitted with a chain driven cutter system, which bucket is capable of being lowered through a hole provided in the center of the barge to collect aquatic plant specimens and water bottom samples for analysis with a view toward controlling such aquatic vegetation in lakes, rivers and reservoirs.

Abstract: The present invention relates to pull-type harvesting machines such as mower-conditioners and comprises a main frame fitted with ground-engaging wheels, a header adjustably mounted on and forwardly of the main frame and comprising drum type mower units, lifting means operable to move the main frame relative to the ground and the header relative to the main frame and an arched drawbar pivotally attached to the main frame and pivotable over the header from a machine operative position to a machine transport position and vice versa.

Abstract: Crop gathering table for a combine has an auger to move crop laterally inwards towards the center of the table. The auger has a central shaft carrying helical flights, and discharge fingers to discharge crop through an opening in the rear of the table. A series of crop feeding plates mounted on the auger and extending lengthwise of it between portions of the helical flights, promote smooth flow of crop below the auger shaft.

Abstract: Linkage is provided for suspending a hay harvesting header beneath a mobile carrying frame having a lateral horizontal beam, the linkage including an upper link pivotally connected to the horizontal beam and extending rearwardly downwardly to a pivotal connection with the header and a pair of laterally spaced lower links extending from pivotal mountings with the header rearwardly to pivotal mountings with the frame. When the header is in the operating position, the instant center of rotation of the header is rearward but adjacent the harvester and when raised to transport the instant center moves rearward toward infinity.

Abstract: An attachment for a conventional level-land grain combine which allows the combine to be operated and the grain to be harvested on the slopes of hillsides without excessive buildup of the grain on the low side of the machine. The attachment includes movable doors which vary the size of the opening between the gathering and cutting unit and the feeding and separating unit. By partially closing off the opening on the low side of the machine, more of the grain is fed to the high side thus providing for more even distribution of the grain into the threshing and separating units. Movement of the doors is remotely controlled by the operator according to the slope of the hillside on which the machine is operating.

Abstract: To assist textile mills in complying with Government regulation of noise levels, a tunable noise suppression device or muffler is connected to the exhaust of the fiber collection box of a pneumatic spun fiber collection system of a spinning machine. The device is adjustable to reduce exhaust noise to an acceptable level while maintaining the necessary degree of suction in the fiber collection system. The noise suppression device has the ability to nullify the most predominant noise generating sound wave lengths and/or predominant noise frequencies through tuning, whereby it is unnecessary to construct various sizes and configurations of the suppression device for use on different textile machines which may possess differing predominant noise frequencies.

Abstract: A simplified, mechanical analog to digital converter mechanism useful in clocks or the like includes an impulse wheel periodically actuated by the continuous rotation of a conversion wheel coupled to a drive means such as a synchronous motor. The conversion wheel has a single tangential tang struck from its planar surface which functions on each wheel revolution to engage and advance a tooth of the impulse wheel one step. A uniform shaft rotation is thereby converted to a succession of digital steps, for example, a sweep seconds hand is converted to a jump seconds indicator.

Abstract: A small-sized electronic wristwatch assembly, wherein a support plate is constructed and arranged to position the operative elements of the wristwatch to reduce the size thereof is provided. The electrical components of the wristwatch include a battery, a quartz crystal oscillator coupled to the battery for producing a high frequency time standard signal, a divider circuit coupled to the oscillator for dividing the high frequency time standard signal and producing a low frequency timekeeping signal, and an electro-mechanical transducer for receiving the low frequency timekeeping signal and in response thereto being continuously incrementally rotated. The mechanical components of the wristwatch include a center wheel and a gear train disposed intermediate the electro-mechanical transducer and the center wheel for transmitting to the center wheel a predetermined amount of rotation in response to each incremental rotation of the electro-mechanical transducer.

Abstract: Electronic watch provided with a release circuit in order to reduce the consumption of energy of the watch in its stocking condition. The release circuit is controlled through a delay circuit by a logic control circuit which is set in a particular "stocking" position by control means.

Abstract: Time correcting means for a digital electronic watch enables time correction to be carried out by manually applying pressure to a pressure sensitive diode. By changing the magnitude of the applied pressure, the time correcting speed can accordingly be changed in two or three steps.

Abstract: A multi-reflection clock having a two way mirror mounted over the face of the clock, a one way mirror as the face of the clock with the reflecting surface of the one way mirror on the rear side of the face of the clock and sources of light arranged in a circle between the two mirrors whereby reflections of the sources of light appear to an observer in a plurality of substantially symmetrically disposed lines about the clock converging together toward the rear of the clock.

Abstract: A swivel link for a dual chain conveyor which permits predetermined sections of a pair of endless chains to be rotated perpendicular to the longitudinal direction of movement of the chains. The dual chain is used as a conveyor for a load and the swivel link allows a work piece transported on the dual chain conveyor to be moved at a work station.

Abstract: A coal fired combustor for a gas turbine engine comprises a centrifugal fluidized bed where the coal particulate is introduced radially inwardly toward the axis of rotation through the bed. A centrally mounted pipe which may be rotatable at a different velocity collects and distributes the gases generated by the combustion process and also serves to filter out the elutriated particles. Additives to the fuel for minimizing sulfur dioxide (SO.sub.x) and nitrogen oxide (NO.sub.x) may be added to the fuel prior to introduction to the bed so that the adverse effects of elutriation does not occur before sulfur adsorption.

Abstract: Combustion equipment for a gas turbine engine comprises an annular flame tube having a circumferential array of upstream projecting pots or vortex generators at its upstream end, an annular diffusing passageway located upstream of the pots and terminating adjacent the upstream ends of the pots, and a plurality of tubular ducts, one extending from the annular diffusing passageway to the upstream end of each pot.

Abstract: A compact single shaft gas turbine engine includes a radial compressor and a radial turbine mounted for rotation about a central axis and an axially inline disk regenerator disposed forward of the turbine. A highly efficient engine configuration minimizes energy loss along an improved gas flow path while permitting the engine to be mounted on a standard 22 inch wide farming tractor frame. Efficiency is further increased by a radial exhaust diffuser disposed between the regenerator and turbine which does not contribute substantially to engine size.

Abstract: In a gas turbine ducted fan engine, the inner wall portion which during cruise blocks the inner end of the reverser outlet, and the blocker flaps are separate entities which are aligned with each other in an upstream, downstream direction. This enables inter alia, the inner wall portion to be of much stiffer construction than hitherto, per unit volume of material used and thus improves sealing of the fan duct.

Abstract: Hemispherical combustion chambers of a cross flow type cylinder head, having symmetrically disposed and synchronously sparked plugs are fed a near stoichiometric air fuel mixture containing up to 40% EGR gas which after combustion is exhausted through individual ports, mixed with secondary air supplied by a simple reed valve and oxidized in a catalytic converter.

Abstract: Disclosed herein is an apparatus for cleaning the exhaust gas of an internal combustion engine, which apparatus includes an exhaust gas recirculation system provided with a back-pressure control mechanism for maintaining a predetermined constant pressure of recirculated exhaust gas in a recirculation passageway, and an air injection system connecting an air pump with an exhaust system of the engine. An air-flow control valve having two vacuum chambers arranged between the air injection system and the exhaust gas recirculation system for controlling, in two stages, the amount of air diverted from the air injection system to the recirculation passageway. One of the chambers is directly connected to a vacuum source in the intake system of the engine. While the other is connected, via a vacuum delay unit, to the vacuum source.

Abstract: A forced air control valve for an air injection system in an internal combustion engine has a diaphragm operated main valve member responsive to the vacuum from intake manifold to divert air from the exhaust system to atmosphere. A separate shifting or diverter valve for the exhaust system is temperature responsive and when the main valve member is open permits the supply of air to the exhaust manifold upstream of a catalytic converter only during cold engine operation. During warm engine operation when the main valve member is open, the separate shifting valve diverts the air to the catalytic converter. Upon deceleration during cold engine operation the separate diverter valve is shifted to divert air from the exhaust manifold to the catalytic converter. A temperature sensitive overheat switch is operable upon overheating of the catalyst to vent the forced air to atmosphere.

Abstract: A method and apparatus for collecting energy from a swell in a fluid medium using a mobile float which is displaceable in response to movements of the swell. The float is submergible in the fluid medium at a predetermined depth selected such that, in the absence of movement of the fluid medium, the upwardly and downwardly directed forces acting on the float counterbalance each other so that the float is in equilibrium at such predetermined depth. The buoyancy of the float is adjusted to maintain it in equilibrium.

Abstract: Apparatus for controlling and taking up the axial displacement of large rotating cylinders, comprising a pair of end bearings, of which one is provided with driven rollers, while the other is provided with idle rollers, one of which is carried by a bearing orientable about a vertical axis. A first transducer senses the axial displacement of the cylinder and its output is connected to an input to a first device effecting a comparison with a reference signal; the output of the first comparing device is connected through an amplifier to an input to a second comparing device, a second input of which is connected to the output of a second transducer sensing the displacement of the guide roller bearing. The output of the second comparing device controls a servoactuator mechanically connected to the orientable bearing of the guide roller.

Abstract: A process for isolating dinitrogen monoxide from oxidation off-gases formed by the oxidation of a cycloalkanol or a cycloalkanone using nitric acid which off-gases contain dinitrogen monoxide in admixture with nitrogen oxide, nitrogen dioxide, nitrogen, oxygen, carbon dioxide and/or steam which comprises:A. Drying the oxidation off-gas and if necessary removal of nitrogen monoxide, nitrogen dioxide and carbon dioxide.B. Compressing the resultant off-gas from which water has been removed to a pressure in the range of 15 to 300 bars and cooling the same to a temperature in the range of 0.degree. to -88.degree. C.;C. Removing the liquid phase obtained as a result of said compression and cooling; andD. Cooling the resultant gas phase by expansion and passing the same in indirect heat exchange with off-gas which has been prepurified by removal of water content thereof.

Abstract: A liquefied gas apparatus, in particular a gas lighter for smokers, is disclosed, utilizing a vaporizer-pressure reducer assembly including a pressure reducing device situated generally within a vaporizer. All solid materials with which the assembly is in contact have a thermal conductivity in the range 0.3 to 5 kcal/m/h/.degree. C.

Abstract: A method and system for preparing comestibles for frozen storage in which pressurized freezing air is utilized in conjunction with a substantially flat conveyance surface, both to aid in or contribute to the conveyance of the packages or containers as well as to effectuate the rapid freezing of the comestibles therein during the course of such conveyance through the system. In the preferred embodiment, the elongated conveyance deck is of space saving substantially helical form with successive descending turns underlying one another and with the space surrounded by the turns forming part of a plenum chamber into which pressurized freezing air is blown for admission into a laterally open plenum duct underlying the deck throughout its length. Such elongated plenum duct is tapered transversely beneath the deck for uniform distribution of pressurized freezing air to the discharge apertures in the deck by means of a transversely inclined duct-forming panel cooperating with the deck.

Abstract: A method of freezing a liquid is disclosed comprising the steps of establishing a freezing zone, delivering the liquid to the freezing zone so that the liquid runs across the freezing zone, and collecting the unfrozen liquid running off the freezing zone for return to the freezing zone. The delivery of liquid is stopped when a sheet of frozen liquid of desired thickness is established on the freezing zone, and the freezing step is continued to harden the sheet of frozen liquid. The freezing zone is heated to harvest the sheet of frozen liquid by thawing the bond between the freezing zone and the sheet initially at the periphery of the freezing zone and thereafter throughout the freezing zone. The harvested sheet of frozen liquid is gravity dropped from the freezing zone into a fragmenting zone where the sheet is broken into fragments.

Abstract: Surge in a compressor-driven system, such as a refrigeration system, is precluded by sensing an appropriate parameter, for example the gas flow at the compressor discharge outlet, and developing therefrom a feedback signal which dynamically varies the capacity of the compressor so that the discharge pressure versus discharge flow rate characteristic curve of the compressor always has a negative slope at the operating point, regardless of where that point is located on the curve. By providing a negative slope at all operating conditions, the system is incapable of surge. In order to satisfy variable load requirements, the compressor capacity is adjusted to vary the steady state operating point on the characteristic curve.

Abstract: Cryogenic cooling apparatus of the type including a generally tubular heat exchanger having a warm end and a cold end and affording two paths through one of which refrigerant gas flows from a supply under pressure to an expansion nozzle for producing cooling by means of the Joule Thomson effect in a liquefying chamber whence the low pressure gas returns through the other path to cool the incoming refrigerant, and a valve member cooperating with the nozzle to vary its effective area for automatically controlling the flow of refrigerant is characterized in that the valve is actuated by the expansion of an expander caused by the temperature of the expander itself, the expander being of elongate form and having an anchored end supported by the cold end of the heat exchanger but thermally insulated from it by a path of low thermal conductivity and extending away from the warm end of the heat exchanger to a free end which actuates the valve the expander having a warm end portion of high thermal conductivity extendi

Abstract: A Freon driven engine, drivably connected with the compressor of an air conditioner unit, utilizes normally wasted heat from the air conditioner condenser to supplement the heat supplied by a primary heat source thus reducing the quantity of energy normally required from the heat source to expand Freon and maintain operation of the engine. The evaporator of the air conditioner unit is utilized to reduce the temperature of the Freon exhausted by the engine before return to the heat source.

Abstract: A refrigeration system for a catering truck includes a reservoir of ice cubes. A food compartment is provided for storing food under refrigeration and includes a cooling section adjacent thereto. Ice cubes are fed from the reservoir to the cooling section. A blower circulates cool air from the cooling section through the food compartment.

Abstract: A method for separating collidal zeolite crystals from aqueous mother liquor solutions with conventional filtration apparatus by initially freezing the dispersion to a slush and conducting the filtration operation as the slush melts.

Abstract: A variable length transmission shaft for drive transmissions in various types of machinery includes a pair of parallel rotating or synchronous speed torque coupling joints and a connecting shaft carried between the coupling joints. Each of the coupling joints has inner and outer joint members which are slidable with respect to each other, and torque transmitting balls arranged between the inner and outer joint members for transmitting torque between the inner and outer joint members. The connecting shaft is formed of a pair of telescopically cooperating shaft members which are arranged for relative sliding movement with respect to each other. One of the shaft members is coupled to the inner joint member of one of the coupling joints and the other shaft member is coupled to the inner joint member of the other coupling joint. The overall length of the transmission shaft can be varied by effecting sliding movement of one of the shaft members with respect to the other shaft member.

Abstract: A cabinet lock has a one-piece housing with spaced front and back walls interconnected by an end wall and by a pair of spaced side walls. The housing has a first set of aligned holes formed through the front and back walls, and a second set of aligned holes formed through the side walls. A lock actuator mechanism is journaled by the first set of holes and includes an actuator movable between locked and unlocked positions. A rotary latch bolt mechanism is journaled by the second set of holes and includes a latch bolt movable between latched and unlatched positions. The lock actuator mechanism includes a first spring which biases an actuator toward its locked position. The latch bolt mechanism includes a second spring which biases the latch bolt toward its unlatched position. The lock actuator mechanism includes a cam with is interengageable with the latch bolt to retain the latch bolt in its latched position until the lock actuator is moved to its unlocked position.

Abstract: An electronic lock system senses codes on a key by means of opto-electronic, magnetic or other electrical means and compares the key code to a code stored internally in a memory. When the key code is equal to its respective stored code the lock activates an electrical clutch operated bolt, and may also change the internal code to a new code.This invention relates to electronic locks, and is more particularly directed to the provision of an electronic lock which can be operated by a key having a code in the form of an electric parameter or optical parameter thereon.