Abstract: In a device for recognizing ferromagnetic foreign bodies, for protecting the working members of a harvesting machine, having a magnetic field generating device (9), the lines of flux of which run transversely to the direction of transport, and having assigned pick-up coils (15; 16; 17), it is intended to improve the recognition range across the entire width of the feed system, whilst keeping costs low. At the same time, it is intended better to suppress disturbance signals. For this purpose, the magnetic field generating device (9) comprises an odd number of magnetic poles (12; 13; 14), the two outer magnetic poles (13; 14) possessing the same polarity. At least every second magnetic pole (12) is enclosed by a pick-up coil (15). Expediently, three magnetic poles (12; 13; 14) are present, which are all enclosed by a pick-up coil (15; 16; 17) each. The pick-up coils (15; 16; 17) are connected up such that the induced voltages are added together.

Abstract: A system for mounting row units on an agricultural implement suited for movement across a field. The mounting system comprises a row unit support frame connected to the agricultural implement. The row unit support frame includes a generally horizontal elongated bar on which the row units are individually mounted in laterally adjacent relation relative to each other and such that the row units are prevented from moving fore-and-aft relative to the frame. At least one of the row units is mounted for lateral movement along the bar and relative to the adjacent row unit. An actuator is provided for effecting powered lateral movement of the row unit along the length of the bar. Each actuator is operated under the influence of a sensor which monitors the lateral position of the respective row unit relative to a desirable path on the field and controls operation of the respective actuator to generally align the movable row unit relative to the desirable path.

Abstract: A control apparatus for a lawn mower which includes two coupling members pivotable about a single axis. The coupling members are connected to a drive mechanism and a braking mechanism for the lawn mower. The members are coupled so that a forward pushing force applied by the operator actuates forward driving movement of the lawn mower and a pulling force actuates the braking mechanism when the drive mechanism is placed in a forward gear.

Abstract: Apparatus for picking up leaves and other loose material from a lawn or other surface and compacting such material in a bag for disposal. As in prior art apparatus of this type, the material is propelled by a rotating paddle wheel into the forward section of a housing, and from a rear housing section to an auger compactor which feeds the material into a bag positioned upon and against side and end support walls. In the present apparatus, better compaction is achieved by inhibiting rotation of the material within the bag due to rotation imparted by the auger. This action is provided by protrusions on the end and side walls of the support walls which indent the flexible bag as it is filled. As a further safety feature, a skirt carrying pivoted obstruction members prevents objects from being propelled forwardly of the apparatus.

Abstract: A mechanism for shifting reel mower cutting units to a position whereat the undersides of the cutting units are exposed for service. A knuckle joint is provided for pivoting the cutting units as the lift arms are raised to thereby shift the cutting units to service positions. A connection point is provided between a yoke and the cutting unit which is located at the upper rear quadrant of the cutting unit's side frame for generally balancing the force distributed to the ground through the front and rear rollers during forward mowing operations.

Abstract: The invention relates to a cutter blade for use on a rotary cutter of the tractor drawn type. Rotary cutters of this type usually have three or four cutter blades rotatably mounted on a blade carrier that can be rotated to induce cutter blade rotation and thereby permit cutting of grass. The cutter blade of the invention has a curved cutting edge with the section including the cutting edge being off-set with respect to the section whereby the blade is mounted on its blade carrier. The use of such cutter blades on a rotary cutter improves cutting efficiency, provides for an increased blade life and reduces the power requirements of the rotary cutter with which the blades are associated.

Abstract: An adjustable hold down clip for use on apparatus using a reciprocating sickle, for maintaining the sickle in a stabilized, efficient shearing position relative to an underlying cutting surface by pivoting around a pivot member in response to the tightening or loosening of an adjustment nut which counteracts a lifting force imparted onto the clip by a tension member. The tension member is located between the pivot member and sickle, to provide lifting action away from the sickle and minimize drag on the reciprocating blade.

Abstract: The leading profile of a winged rotary cutter includes diverging leading profile sections, beginning with outer profile sections of a center housing section extending to opposite sides of the center housing section and continuing with inner profile sections respectively of right and left wing housing sections hinged to opposite sides of the center housing section. The right and left wing housing sections further include outer leading profile sections joined to respective rear ends of the inner leading profile sections and extending at a right angle to the direction of travel so as not to deflect plant stems outwardly of the width of cut of the cutter.

Abstract: A rake attachment for cleaning the tines of a hand rake includes a header and a plurality of tines connected thereto. The tines are substantially rigid and are adapted to engage the tines of the rake and clean accumulated leaves and debris therefrom. A plurality of clips is attached to the header of the rake attachment so that it can be removably mounted on the header of the rake. The rake attachment can also be used as an auxiliary hand rake for raking in confined spaces. In addition, an alternative embodiment has a handle connected to the rake attachment.

Abstract: In the case of a machine frame for a ring spinning machine or a ring twisting machine, several vertical columns, which are situated opposite one another in pairs, are provided on each side of the machine distributed in the longitudinal direction of the machine. At the level of the spindle rails, the vertical columns are connected with one another by means of intermediate pieces extending transversely with respect to the longitudinal direction of the machine and, in the area of the upper ends, are connected with one another by means of transverse bridges. The intermediate pieces are used as the supporting elements for the spindle rails of both machine sides. The vertical columns are used as guiding elements for carriages of the ring rails as well as as guiding elements for carriages of yarn guides. With a self-guiding arrangement of the carriages, a lifting movement of the ring rails and of the yarn guides is ensured which is free of jerks and mutually independent.

Abstract: A process for introducing a fiber sliver into a fiber processing machine which has an openable sliver feeding device and a sliver introduction funnel and a sliver injector, comprising the following steps: opening the openable sliver feeding device, grasping the leading end of the sliver pneumatically into and through the sliver introduction funnel and into the opened feeding device and closing the sliver feeding device on the sliver. The invention also includes a device for carrying out the process.

Abstract: A winder-to-double twister connecting system, which comprises a yarn end picking device for picking out a yarn end from a package set on a tray, a package lifter for inserting a two-piled empty bobbin mounting adapter received from an overhead conveyor, into the tray on a circulating conveyor line, and for transferring the two-piled package mounting adapter to the overhead conveyor; a bobbin mover for pulling off, from an adapter, an empty bobbin coming on the circulating conveyor line; a package loader for taking up the package with the yarn end picked out from the tray and mounting the package to the adapter; and a bobbin stripper for removing remaining yarn from the empty bobbin received from the bobbin mover.

Abstract: A method and apparatus for synchronously piecing rovings applied to a ring spinning frame in combination with a system of transporting roving bobbins by a bobbin carriage between a roving room and a spinning room, wherein rovings supplied from corresponding bobbins of a bobbin carriage in a creel portion of the ring spinning frame are synchronously pieced with corresponding supplemental rovings taken from respective full packaged roving bobbins held by another bobbin carriage in the creel portion of the ring spinning frame.

Abstract: Difficulties in starting a turbine engine, particularly ones having a small volume combustor (83) with a low dome height, may be avoided by a method including the steps of a) forming the turbine engine compressor (48) of a low density, high temperature resistant ceramic material, b) directing pyrotechnic gases at a temperature of at least about 3,000.degree. F. against the blades (48) of the compressor, c) continuing the step of directing until the turbine rotor (44) is rotating at at least about 60 percent of rated speed and d) combusting fuel in the combustor (83) of the turbine engine to maintain the rotor (44) rotating at at least about 60 percent of rated speed.

Abstract: This invention provides a method to mix a relatively large amount of non-condensable gas with fuel prior to gasification heating thus reducing the residence time of the fuel adjacent to hot surfaces. The non-condensable gas may be air, a cryogenic such as methane, or a chemical fraction of the gasified fuel which by itself does not promote the formation of significant amounts of gums or coke deposits.

Abstract: An apparatus and method of providing an Environmental Control System (ECS) for use in conjunction with a turbine engine power plant, to deliver a flow of purified, conditioned air to an enclosed space, such as an aircraft cabin. The ECS includes contaminate neutralization means to neutralize airborne chemical and biological agents.

Abstract: A combustor comprises a passage area changing mechanism which relatively moves a flame holder relative to a premixed combustion nozzle in an axial direction so that the area of passage for premixed gas between an injection edge of the premixed combustion nozzle and a peripheral edge of the flame holder can be changed. Stable combustion can be maintained over a wide load range and reduction in NOx can be achieved.

Abstract: A gas turbine nozzle includes a plurality of nozzle segments having a pair of nozzle vanes supported by inner and outer shroud segments. Each inner shroud segment includes a circumferential retention slot and a radial retention slot in generally circumferential alignment and an interlocking tab and slot arrangement at the respective ends to provide engagement between adjacent flange segments. A 360 degree retention ring includes a plurality of circumferential retention tabs and radial retention tabs to engage respective ones of the plurality of flange segments to secure the nozzle segments in a circumferential ring about the outlet of a gas turbine combustor.

Abstract: A jet engine has a central turbojet stream and a peripheral ram jet stream which can be in turn obstructed or freed by flaps. The flaps can be opened outwardly and are located on an intake cone and at an inlet of the peripheral stream. The operation of the flaps is a function of the sought operating mode. This arrangement permits a very good guidance of gases.

Abstract: An engine has a shroud which surrounds one of a propfan and a propeller having blades. The shroud has a variable geometry. A direction of the air flow inside a duct of the shroud is reversible via an adjustment of the blades for the reversal of the thrust of the engine. A separately movable nozzle ring forms a rearward end of the shroud. The nozzle ring is axially displaceable to an extent such that its trailing edge forms wherein air flow is promoted around the end of the shroud.

Abstract: A variable area bypass injector (VABI) for a variable cycle gas turbine engine includes a circumferentially continuous valve with a conical surface sloping into a screech suppressor surface, a circumferentially segmented seal attached to the diffuser, and a valve actuator located outside the outer duct of the engine. Each seal segment is spring loaded to allow for different axial movement between circumferentially adjacent segments, and has a seat portion complimentary to the valve conical surface for sealingly engaging the valve when in closed position. Additionally, the seal segments are shaped with a low aerodynamic profile and cooperate with the VABI conical surface, when the valve is in an open position, to provide an annular conic channel that keeps the bypass flow attached to the VABI valve and core flowpath walls as it is injected into the core gas stream.

Abstract: A rocket engine thrust nozzle assembly is disclosed wherein combustion products from a plurality of rocket engines having hexagonally-shaped exhaust areas flow to the inlet of a main nozzle that transitions the flow of the combustion products from a non-circular flow area to a circular flow area.

Abstract: A process for operating an internal combustion heat engine which comprises the steps of thermochemically regenerating waste heat rejected by the heat engine by reacting at least one conventional fuel compound containing hydrogen and carbon with an oxygen donor using substantial quantities of the waste heat to produce a mixture of engine-fuel containing substantial quantities of hydrogen and carbon monoxide and utilizing the mixture of engine-fuel to operate an internal combustion engine.

Abstract: In an air-fuel ratio control system for an internal combustion engine, an output from a first air-fuel ratio sensor arranged upstream of a three-way catalyst mounted across an exhaust passage of the engine is compared with a reference value during feedback control of the air-fuel ratio. The reference value is controlled based on an output from a second air-fuel ratio sensor arranged downstream of the three-way catalyst. The reference value is changed in dependence on the engine load detected.

Abstract: An air-fuel ratio control system for an internal combustion engine utilizes a pre-stored standard relation between an air-fuel ratio sensor signal and a standard air-fuel ratio indicative value for deriving the standard air-fuel ratio indicative value based on the sensor signal. The system further utilizes a pre-stored modified relationship between the standard air-fuel ratio indicative value and a for-control air-fuel ratio indicative value for deriving a for-control air-fuel ratio indicative value based on the derived standard air-fuel ratio indicative value. In the modified relationship, the for-control air-fuel ratio indicative value varies with respect to a corresponding variation of the standard air-fuel ratio indicative value within a given range across the standard air-fuel ratio indicative value representing a stoichiometric air-fuel ratio.

Abstract: An exhaust gas purifier for a diesel engine is positioned in the middle of an inlet system for supplying air to a combustion chamber. The exhaust gas purifier includes an HC (hydrocarbon) supply source, and a zeolite catalyst converter, which is activated by the hydrocarbon as a reduction agent to crack NOx (oxides of nitrogen) in the exhaust gas, for thereby purifying the exhaust gas.

Abstract: A control apparatus comprises a plurality of servomechanisms for controlling a control surface of an aircraft. Each of the servomechanisms is equipped with a control valve for controlling the oil pressure in hydraulic chambers of the actuator assembly operatively connected to the control surface, and a switching valve provided between the actuator assembly and the control valve and shiftable to assume driving, bypassing and damper valve positions. The switching valves of the servomechanisms are shifted to assume the driving valve position in a normal operation. If one of the servomechanisms is damaged, the switching valve of the damaged servomechanism is shifted to assume the bypassing valve position. If all of the servomechanisms are damaged, the switching valves of the damaged all servomechanisms are shifted to assume the damper valve position.

Abstract: A double-headed swash plate type Stirling engine includes double headed pistons defining front spaces and rear spaces and anchored to the swash plate by shoes. Thus, the reciprocal movement of the double-headed pistons, resulting from the expansion and compression of an operating gas in the front and rear spaces, are directly converted into the rotary movement of the swash plate. Hence, the Stirling engine has a very simplified construction.

Abstract: A method and apparatus for providing a required deaerating temperature differential between incoming water and sparge steam in a steam generation system having a vacuum deaerator. The present invention selectively combines raising the energy of the sparge steam with flash cooling of the incoming water to provide the required deaerating temperature differential. The energizing of the sparge steam is accomplished by a thermocompression device. The thermocompression device may also be used to reduce the pressure in a portion of the vacuum deaerator to cause the flash cooling of the incoming water.

Abstract: A cyclic noise removing method first generates a template of a cyclic noise caused by a cryogenic refrigerator, which template is generated by arithmetically averaging the output signal from a magnetic sensor by every vibration cycle of the cryogenic refrigerator, the magnetic sensor being cooled by the cryogenic refrigerator, then removes noise included in the output signal of the magnetic sensor by subtracting the template from the output signal of the magnetic sensor.

Abstract: A cryogenic vacuum pump includes, in an integral assembly, temperature sensors and heaters associated with the first and second stages of the cryopumping array, a roughing valve and a purge valve. An electronic module removably coupled in the assembly responds to all sensors and controls all operations of the cryopump including regeneration thereof. System parameters are stored in a nonvolatile memory in the module. Included in the regeneration procedures are an auto-zero of the pressure gauge, heating of the array throughout rough pumping, and a change in pressure rate test to determine stall in rough pumping. The electronic module also restarts the system after power failure, limits use of a pressure gauge to safe conditions, provides warnings before allowing opening of the valves while the cryopump is operating and stores sensor calibration information. Control through a control pad on the pump may be limited by a password requirement. Password override is also provided.

Abstract: A cryopump includes a housing in which is mounted a cooling head having a first, 80.degree. K. cooling stage and a second, 20.degree. K. cooling stage. A shield mounted on the cooling head surrounds the two stages, and a cooling surface within the housing and within the shield surrounds the second stage. The housing and the shield include corresponding inlet openings for admitting gases, and a diaphragm protects the cooling surface from heat radiation entering the inlet openings. The diaphragm is closer to the cooling surface than is the shield, creating a transfer opening that permits free access of gases into the volume within the shield. The cooling head can be rotated by an adjustment motor to displace the shield inlet opening with respect to the housing inlet opening to control the suction capacity of the pump for process gases without the need for an additional reduction valve, while maintaining the capacity for processing water vapor.

Abstract: Frozen ice products are prepared by freezing a first ice mixture in a first mold to form a core and then by freezing a second ice mixture about the core in a second mold. The core is prepared by introducing and freezing a first ice mixture in a mold having a grooved frustocylindrical hollowed interior which, after demolding, provides a frozen grooved ice article which is introduced as a core into a second mold having a frustocylindrical hollowed interior and which has been filled partly with a second ice mixture which is frozen. A striped product is produced by employing a second mold which has a hollow cross-section size not larger than the cross-section size of the hollow of the first mold so that the outer edge frozen core surfaces contact the second mold.

Abstract: A method of reducing flow metastability in a liquid refrigerant in an ejector nozzle by generating dispersed bubbles in the flow entering the nozzle by first forming relatively large bubbles and then breaking them down into small finely dispersed bubbles, so as to reduce the density of the flowing mixture and provide nucleation sites allowing control of flow rate and causing the mixture to expand in substantial thermodynamic equilibrium with maximum nozzle velocity.

Abstract: A temperature controller for facilitating the storage of wine and like perishables in a household refrigeration unit includes a temperature sensing device, adapted to be positioned in a chilled compartment of the refrigeration unit, and a temperature controller circuit, operatively connected to the temperature sensing device, for overriding an internal thermostat of the refrigeration unit. The temperature controller circuit maintains the refrigeration unit's chilled compartment at a desired user selected wine storage temperature by periodically enabling and disabling the supply of electrical power from an external power supply to the refrigeration unit's chiller (e.g., compressor). The temperature controller circuit is maintained in a housing adapted to be positioned on or adjacent the refrigeration unit. The housing may also include a display for visually indicating the temperature of the chilled compartment.

Abstract: An active noise control system for a three-dimensional space, including noise detecting means, sound generating means, noise control effect detecting means and a control device consisting of a phase of a wave signal fed from the noise detecting means wherein a plurality of noise control effect detecting means and sound generating means are disposed at a distance shorter than a wavelength of the noise to be controlled, and input signals of the respective sound generating means and output signals of the respective noise control effect detecting means are fed through filters, separately, to control the sound for active noise control. In case of an air conditioner, the noise control effect detecting means are disposed at positions where an air stream flowing through the air conditioner is not obstructed thereby.

Abstract: A spiral type freezer constructed and operated to introduce refrigerated atmosphere into the bottom of the insulated chamber and circulate the atmosphere in a circulation flow from the bottom of the chamber to an exit on top of the chamber, the refrigerated atmosphere producing a thermal gradient from the bottom to the top of the chamber so that the freezer is operated non-isothermally.

Abstract: A food freezer for continuous freezing of food products utilizing a helical conveyor for transporting the food products through an enclosure in which the food products are cooled. Mechanical refrigeration apparatus employs a refrigerant to cool an atmosphere gas which is circulated across the food products within the enclosure. The refrigerant is also employed to subcool a cryogen which also cools the same food products.

Abstract: A beverage dispenser of the cold plate type as shown wherein the cold plate is oriented within a housing of a dispenser such that the fluid lines extending through the cold plate extend in a pattern for preventing ice bridging occurring at the back end of the device. The cold plate also includes stainless steel wire coils within each water line along an end portion thereof for turbulating the water as it passes there through to provide for enhanced heat exchange between the fluid and the cold plate and the fluid line end portion.

Abstract: A refrigerator is provided with a refrigerating unit in the form of an apparatus having at least one pair of containers, where each pair includes a first and a second container (18 and 20, respectively) communicating with each other through a pipe (22). Each container contains a substance which, when being heated, gives off a gaseous working medium and, when being cooled, absorbs the gaseous working medium. The first container (18) is arranged to be heated from the storage compartment (16) of the refrigerator, which compartment thereby is cooled. The second container (20) is provided with a heater (34). Each container is provided with an arrangement for, when need arises, conducting heat away from the respective container, which arrangement includes a cooling circuit (26, 28, 30, 32 and 36, 38, 30, 32, respectively), in which a pump (26, 36) brings a cooling liquid to cool the respective container. The liquid is cooled in a radiator (32) arranged on the refrigerator.

Abstract: The invention relates to a chain link for gems comprising a mounting portion, a linking element disposed on the mounting portion and a receiving element provided on the mounting portion for taking up and connecting a linking element of a further chain link, the gem being simultaneously held captively by the fastening element in the mounting portion of this link member by engagement of the linking element of a first chain link with the receiving element of a further chain link. The invention also relates to a method for producing ornamental chains using the inventive chain links and to the ornamental chains themselves.

Abstract: The invention hereby provides a novel flat knitting machine which is furnished with a pair of needle beds in the front and rear positions each having a plurality of knitting needles aligned in parallel in such a condition in which respective knitting needles face each other, where a loop expanding member is provided on a lateral surface of each knitting needle. When transferring a loop from a delivery-side knitting needle engaged with this loop to an opposite receiving-side knitting needle, the receiving-side knitting needle is carried forward before the loop engaged with the delivery-side knitting needle is expandably opened by the loop expanding member, and then, the receiving-side knitting needle receives the loop in order that the loop engaged with the delivery-side knitting needle can properly be transferred to the loop expanding member from a hook of the delivery-side knitting needle. Next, the loop expanding member expandably opens the loop engaged with the delivery-side knitting needle.

Abstract: A loss-prevention device which operates by filling the hole of a lunette eye with a steel two-piece cylinder spool containing a barrel lock. Horizontal separation of the two pieces allows for the vertical removal from the lunette eye. When connected within the lunette eye, the device prevents attachment of the lunette eye's corresponding pentel hook and subsequent towing, hence, the name NO-TOW. This device can be manufactured in three sizes to accomodate the three sizes of lunette eye connectors currently in use.

Abstract: A device is disclosed for locking the key ignition of a vehicle. The device includes braided cables encased in neoprene rubber, and a recess is provided at the midpoint of the length of these cables. A locking housing is basically cylindrical in shape and includes a combination lock in its center section while the ends of the housing are flared angularly outward and have two through holes which serve as receptacles for the cables. Finally, ratchet-like teeth are arranged along the length of the cable, and two spring loaded engagement levers are located in the cable receptacles within the housing. The cables fit around the steering column of a vehicle with the recess placed over the key ignition. The locking housing receives the cables in the through holes and is locked in place by the combination lock.

Abstract: A locking device is provided for a vehicle having a spare tire hoist system for storage of the spare tire. The locking device includes a tubular member having a first end adapted to mateably engage an actuator tube on the hoist, and a second end. The second end includes a press-fit pin or extendable pin that engages the bumper to prevent the tubular member from being removed, and further includes a lock that prevents the tubular member from being rotated without removing the lock. The second end also includes a partially flattened section that can be engaged by a wedge-shaped end of a vehicle lug wrench.

Abstract: In accordance with one aspect of the invention, a kicker arm-pawl lock mechanism rotates a number one wheel of a combination lock a predetermined distance to require resetting each number of a combination during lock manipulation. A drive cam-travel arm and bolt lock mechanism assures complete scrambling of the combination by requiring rotation of all wheels prior to bolt extension into a locked position. Another aspect of the invention includes a lock lever and drive cam mechanism which requires opening of the combination lock once a combination has been correctly dialed. A lock lever and pivoting pawl lock mechanism prevents lockout conditions by diverting forces applied to the combination lock bolt to the lock casing rather than the lock lever.

Abstract: In a locking apparatus that utilizes bores and blocking pins along with key cards and code cards to unlock the lock, a master card key is employed with holes in all of the master card bores and balls are used instead of blocking pins.

Abstract: An improved tube rotary draw bending apparatus for bending a tube having a bend die around which a bend in the tube is formed, a pressure die and means for maintaining a pre-programmed frictional profile of the interaction of the tube with the pressure die during the bending operation. Improved quality of the bent tube is consistently obtained.

Abstract: A rolling train for rolling girder sections includes at least one two-high reversing roughing stand and a plurality of subsequent universal stands for work rolling and finish rolling. Two universal stands and an upsetting stand are combined to form a reversing tandem group. A universal sizing stand for passing rolling is arranged immediately subsequent to the tandem group. The universal stands of the tandem group have double-cone shaped vertical rolls and the universal sizing stand has cylindrical vertical rolls. The girder section is rolled in several successive passes with the flanges of the section being directed outwardly and the outwardly directed flanges are rolled so as to extend parallel in a last smoothing pass.

Abstract: A panel bender which can remarkably improve productivity in a bending process, and can feed in and out works having different widths with a single conveyer without causing interference between a main body and the conveyer has a construction in which a plurality of main bodies (1) are provided at opposite positions across a conveyer (16) for feeding the work (A) to a working position within the panel bender, each of the main bodies being movable in a back and forth direction with respect to the other by a back and force feeding device (13). The conveyer (16) disposed between the main bodies is adapted to expand and contract in the width direction in cooperation with back and forth movement of the main bodies.