Abstract: A remote reading crankshaft alignment tool utilizes a differential transformer and live centers to measure the deflection of crankshaft webs as a function of crankshaft angle. The tool is positioned between adjacent webs to measure the difference in spacing between preset points on the crankshaft webs as the crankshaft is rotated, with any misalignment resulting in a difference in output as the crankshaft is rotated. The live centers are in the form of conical-shaped feelers mounted in bearings, with the live centers fitting into punch marks in opposing webs. In one embodiment, one feeler is fixed with respect to the tool body and the other is spring-loaded and slidably mounted in the tool body. An extension of the slidably mounted feeler includes a ferromagnetic coupling slug which is initially centered in a split-winding differential transformer within the tool.

Abstract: A gauging head, for checking linear dimensions of workpieces, comprises a casing; two movable arms, pivotable about pins fixed to the casing, and carrying feelers for contacting the workpiece to be checked; two position transducers operatively coupled to the movable arms; a second pair of arms pivotable about the pins; and zero-setting devices. The zero-setting devices include two members coupled to a shaft rotatable by a control lever. In a first position of the control lever the members are locked and the gauging head is in gauging condition. In a second position of the control lever the members are unlocked and can translate along the shaft permitting to carry out the zero-setting operation of the head because the two movable arms and the second pair of arms engage the members in such a way that the arms can rotate about the pins while maintaining a determined setting of the transducers.

Abstract: Two directional measuring device having an elongate measuring member having a distance measuring scale along its length and another measuring member to measure distance in another direction. The two members are relatively moveable in the direction of the measuring scale of the elongate member and the other member has diverging surfaces extending generally in that direction and a distance measuring scale to indicate, at spaced positions, the distance apart of the diverging surfaces.

Abstract: Apparatus for checking the profile of a sheet and comparing measured data with that data from measurement of a standard. The apparatus includes a frame, a plurality of studs on the frame providing three support locations for the sheet, a plurality of reference stops spaced along two adjacent sides of the frame and structure along opposite sides for moving a sheet into a centered position at the stops and measuring structure for measuring the profile of the sheet at a centered position. The sheet may be held at the centered position to immobilize it during measurement and the apparatus may be located along a production line including structure for moving a sheet to the frame and removing the sheet from the frame.

Abstract: There is disclosed herein a gauge for aligning opposite points within opposite surfaces of a normally symmetric body. The gauge comprises an elongated guidebar disposed above and upon the symmetric body. The guidebar is also perpendicularly transverse to the plane of symmetry of the symmetric body. Also included are left and right calibration assemblies which are slideably disposed upon and within opposite halves of the guidebar, each of the calibration assemblies themselves include an X- and Y-axis joystick connected, in each axis, to respective means for converting linear physical displacement of the joystick to corresponding electrical output signals.

Abstract: A probe for use in measuring apparatus has a base member including a two-dimensional seat for an intermediate member which, in turn, includes a two-dimensional seat for a stylus holder. The two seats face in opposite directions so that the stylus holder can be displaced from the seated position in either of two opposite directions.

Abstract: The apparatus comprises a body (1) provided with three point-contact feelers (12, 13) which open under the action of a spring (19) and close under the action of a lever (20) via a rod (14) and a spacer stop (15). A displacement pick-up (22) and an electronic circuit (25) convert the displacement of the feelers into a measurement signal which is representative of the diameter of the circle which they define. The electronic circuit comprises a minimum memory (31) to memorize the minimum value of the measurement signal, a member (39) for displaying this value (39) and a measurement-initialization switch (32). After the feelers, folded together, have been introduced into the bore, the lever is released, the switch is actuated, and the apparatus is moved in all directions by the operator in order to cause the plane of the feelers to pass in a diametral plane of the bore, this passage generating the minimum value displayed which is representative of the actual diameter of the bore.

Abstract: A device to aid in locating a hanger or support on a wall for supporting an object to be mounted at a desired location includes a bracket which temporarily attaches to the frame with a top portion overhanging the top of the frame and a back portion disposed behind the frame. A protrusion extends from the back portion in the direction of the frame to engage the wire or string of the frame, and a frame engaging screw is provided on the top portion to produce tension in the wire or string of the frame in a fashion similar to that existing when the frame is hung. A pin is provided in a channel in the device for producing a mark onto the wall onto which the frame is to be hung, the channel extending from a forwardly accessible location in the top portion to the exact location in the back portion at which the hanger must be attached to the wall to produce the desired location of the hung frame.

Abstract: A filing guide for saw chain which includes a plate having a flat expanse joining with a curved expanse at the forward end of the guide which forms a cylinder. The guide is useable, with one side facing upwardly and the cylinder seated in a pocket defined in a saw chain, to guide a file during filing of a depth gauge and a safety projection in the saw chain. With the guide turned over from this position, and the cylinder again seated in the pocket, the guide is useable to guide a file during filing of a cutting edge in the saw chain.

Abstract: A bow and arrow sighting device for attachment to the bow and comprised of a range finder of the type having a manually rotatable range adjustment wheel which in one embodiment is coupled by gears to a cylindrical cam in operative engagement with a cam follower mechanism which moves a sighting bead element in synchronism with the angular displacement of the range finder range adjustment wheel so that when the range is found with the adjustment wheel the sighting element will be at the proper archer aiming position for arrow trajectory to the target. The one embodiment incorporates a cylindrical cam in operative engagement with the cam follower mechanism. A second embodiment incorporates a sighting glass in place of the sighting bead element and a parallelogram type lever structure is incorporated in the cam follower mechanism for maintaining the sighting glass in proper axis orientation as well as proper archer aiming position for arrow trajectory to the target.

Abstract: A sensor mounted on a frame measures inclination of a sensitivity axis above two contact points on a surface on which the frame is positioned. The signal output of the sensor is converted to digital elevation readings of opposite polarity displayed through windows on opposite sides of a handle through which the frame is rotated about alternate contact points into measurement positions along a measurement line marked on the surface.

Abstract: A trouser presser (10) having vacuum ports is (22b) positioned in the top surface of a center buck (22) to exert a vacuum force on the area immediately above the top of the center buck (22) in the region of the trouser crotch. A wire skeleton (61) spaces the crotch of the trousers above the top of center buck (22) to permit free air movement in the space between the crotch of the trousers and the vacuum means. A vacuum in the area of the trouser crotch assists in the steaming and drying of the crotch area during a pressing operation.

Abstract: A combined device and contest indicia is disclosed comprising an article or apparatus having an intrinsic utility within the article or apparatus. The invention comprises an integrally affixed indicia indicating the results of a participating contest or game. The indicating indicia may be molded, raised, embossed or the like on a surface of the article or apparatus.

Abstract: Apparatus for releasably attaching a sign to a display stand. The sign comprises a sheet of material folded into a central section and a pair of upstanding display sections. The sign support inludes a pair of pivotally connected support members. One support member is releasably attached to the support surface and supports the central section of the sign. The other support member engages the display sections of the sign and maintains them in an upright orientation relative to the support surface. Mating catches on the support members secure the support members to each other in order to securely engage the sign. The engagement between the mating catches may be released in order to pivot the support members relative to each other so that the sign may be removed from the sign support, without removing the sign support from the support surface. The sign support is preferably formed as a unitary, molded plastic article.

Abstract: A recoilless competition rifle or competition pistol with an action which is mounted and guided in the firearm so as to be longitudinally displaceable on bearings and which returns during firing. The bearings have special beddings which compensate for deviations of the bearing axes from their ideal desired positions by adapting their shape to the particular conditions. Bearings made of elastic materials provide for a reversible displacement of material. Beddings comprise materials which can be poured or kneaded and which then solidify in situ to assume their final form as a result of direct shaping (initial shaping) on the delimiting surfaces.

Abstract: A muzzle loader apparatus for use with pistols, which have a curved handle and are loaded with lead balls. The apparatus has a handle engagement portion to house the handle of the pistol, this portion generally conforming to the shape of the handle. A support portion is fixedly connected to the handle portion and extends beyond the length of a barrel, so that a swivel arm can be mounted on the free end of the extended support portion. The swivel arm can move from a horizontal inoperative to a vertical operative position. A ramrod projector is swivelly mounted onto the swivel arm and can move to an alignment position with a bore of the pistol, when the swivel arm is in a position perpendicular to a longitudinal axis of the barrel of the pistol and the support portion. The swivel projector has a loading arm insertable into the pistol bore when the swivel arm is in the vertical operative position.

Abstract: A combination bobber and fish hook remover means. An elongate rod member is fixedly secured to and depends from a bouyant bobber means. The rod member has a groove that extends from its mid section to its free end, and a sleeve member having a slot is mounted for rotation relative to the rod member so that when the slot and groove are in alignment with one another, a fish line can be inserted into the groove. Misalignment of the slot and groove then locks the line into the groove so that the invention can be used. A transverse bore formed in the rod member and an eyehook attached to the top of the bobber, together with a cross bar member, cooperate to provide a means for tying the novel combinational apparatus to a fish line.

Abstract: A fish-trapping device has a feed pan therein which initially contains a substantial amount of feed; and that feed performs the dual functions of (a) helping to keep that device in position to enable fish to freely enter it and (b) enticing fish to enter that device. After substantial numbers of fish have entered the fish-trapping device and have eaten sufficient portions of the feed in the feed pan, that device will automatically and silently trap the fish therein.

Abstract: A trigger actuated device to expel a poison into the mouth of a predatory animal in response to the predatory animal attempting to remove bait from the trigger mechanism. The poison is expelled from a barrel by a pushrod driven by the detonation of a primer means such as a percussion cap or cased ammunition primer.

Abstract: Housing apparatus for a spring wound toy that includes a wrist band supported housing having a platform for supporting a spring wound toy, for example, a toy racing car, a cover hingedly mounted on the platform and resiliently urged to an open position, and a retractable ramp mounted on the housing. The lock member is a manually operated lock member, resiliently retained in a position to retain the cover in a closed position and upon being moved first releases the cover to permit it to move to an open position and then operates a toy release device to allow the toy to move off the platform. A cover slot, that in a cover closed position opens to the platform, is provided to have the toy winding stem extended therethrough and additionally to aid in restraining motion of the toy within the closure provided by the cover and platform.

Abstract: The present invention is an improved method of growing a biomass in an aquaculture medium comprising enclosing the aquaculture medium containing seed amounts of a biomass in an enclosure in which the medium containing the biomass fills one-half of the enclosure and a CO.sub.2 and air gaseous layer is above the medium and fills the other one half, growing the biomass in the medium within the enclosure in a predetermined growing cycle enhancing growth of the biomass in the medium by exposing it to continuous agitation by agitation means heat, by heating means, and illumination by a light source capable of causing photosynthesis in the biomass, and whereby CO.sub.2 consumed from the medium and gaseous layer during photosynthesis in the biomass is continuously replenished by a CO.sub.2 enrichment means and oxygen produced to the medium and gaseous layer during photosynthesis is extracted by extraction means.

Abstract: The protective cutoff device includes a cutoff control and a cutoff valve system connected to an automatic position control which is present anyway in the gear wheel grinding machine serving for topological flank correction grinding and to an adjusting cylinder, respectively. As a result, the grinding wheel is effectively disengaged from the tooth flank in the process of being ground in the event of electric power failure and/or pressure failure or an undesirable pressure drop or upon the occurrence of any other disturbance or malfunction of the grinding wheel. Therefore one side of the adjusting cylinder is connected to a return line and the grinding wheel carrier or support is displaced against a stationary stop by a force or pressure accumulator.

Abstract: A blade for use in two different forms of centrifugal blasting wheels. The blade comprises a body generally in the form of a parallelepiped having an inner and an outer end and side flanges to define a blade which is I-shaped in transverse cross-section. The blade includes a first pair of laterally extending retaining lug formations which are adapted to engage the inner annular surfaces of the wheel plates of a first wheel thereby to retain the blade in place. Each of said first lug formations is arcuate and formed at a common radius with a pair of second retaining lug formations which extend from the side flanges of the blade in directions generally at a right angle to the direction the first lug formations extend from such side flanges. When the blade is used in a second wheel, the second lug formations engage abutment surfaces formed in recesses in the wheel plates thereby to retain the blade in place in the second form of blasting wheel.

Abstract: A gutter system characterized by a continuous snap lock hinge connection between a gutter and hanger therefor which allows the gutter and hanger to be relatively angularly adjusted in the field for use with different roof configurations, and which then is secured against hinged movement by bonding to provide a continuous rigid support for the gutter as well as a continuous water seal between the gutter and hanger. The hanger includes an anchoring flange having a reversely under-turned edge portion forming a hook; whereas each of the gutter side walls has an inwardly-turned top edge terminating at an enlarged bead adapted to be transversely snapped into the bight of the hook for hinged movement therein. The interengaged hook and bead allow the gutter and hanger to be relatively angularly adjusted as desired until an adhesive interposed between mating surfaces thereof sets or cures to form a rigid bond that holds the gutter and hanger in the desired adjusted angular relation.

Abstract: The invention provides a storage tank comprising a storage tank main body of concrete; lining plates lined on inner surfaces of a bottom, side walls, and a ceiling of the storage tank main body; and a manhole of the ceiling which is air- and liquid-tight and which blocks radiation. Leakage detection ditches are formed within welded seams of the lining plates. A method for manufacturing such a storage tank is also provided.

Abstract: A column having a base section and a tiltable section, the tiltable section being hinged adjacent the top of the base section by hinge means within the base and tiltable section whereby, the tiltable section may be tilted from it's normal upright position to a position whereby the upper end is adjacent the ground for maintenance of a lamp unit.

Abstract: Disclosed is a structure of flexible tensile members which requires only two arrays of said members for obtaining lateral stiffness of said structure, the ends of each member being attached to contour elements and the members of each array having opposite curvatures for forming an axisymmetric geodesic network which is a section of a surface of revolution. The members of both arrays are prestressed and said network is geometrically arranged to be torque-balanced within said contour elements.

Abstract: A portable apparatus for drilling deep boreholes in the earth, comprising a subbase structure, a drawworks platform supported on four legs hinged both to the subbase structure and to the drawworks platform and when in lowered position extends away from a first end of the subbase: A mast hinged to the sub-base structure by two legs and in the lowered position extends away from the second end of the sub-base; a pulling means has a sheave through which a slingline cable is passed, and the two ends of the cable are separately connected between the mast at a selected point, and a pulley mounted on the drawworks platform so that in one continuous pulling motion of the pulling means, the drawworks platform is first raised into vertical position, and then the mast is lifted until both parts are fully erected on the subbase.

Abstract: A pollutant storage system that provides substantial wall strength with greatly reduced concrete mass. Reinforced concrete panels precast with a pattern of surface cavities and supported by precast reinforced concrete A-frames enclose a paved floor area.

Abstract: A skylight having a dome and adapted for setting on a curb or suitable bracket means upstanding from the well in a roof structure to be lighted is made from a self supporting channel shaped frame having an inner leg attachable to the curb and an outer leg attachable to a flashing which is fixed to the roof. The dome sets down upon a pair of flanges integrally formed with the channel and upstanding from its upper surface to create an enclosed dead air space between it and the flange of the dome. The dome is held down upon the channel by the clamping action of a retainer frame which is fixed to the outer leg of the channel.

Abstract: A thermal insulation structure for windows including a flat, transparent or translucent plastic sheet and a frame structure adapted to clamp the edges of the sheet and adapted to be magnetically attached to an existing ferromagnetic window frame or to a ferromagnetic or magnetic strip adhered to a window, window frame or opening. The frame structure comprises a U-shaped member and a magnetic strip secured to one prong of the U-shaped member or a L-shaped member secured to one surface of the sheet while the magnetic strip is adhered to the opposing surface of the sheet. The insulation structure is transparent to outside light and provides a simple means for significantly reducing conducted and radiated heat loss through the window and for eliminating window air infiltration heat loss.

Abstract: This invention relates to a spring clip for biasing window sills up against the lower edge of a window sash either before or after the drywall has been installed, such clip being characterized by a horizontally-disposed leg fastenable to the underside of the sill, a spring finger depending from the front edge of the horizontal leg and extending rearwardly therefrom in acute angular relation, an upturned foot on the rear end of the spring finger, and means for fastening the sill and clip to the rearwardly-facing interior wall surface so as to hold the rear edge of the sill down in opposition to the bias exerted thereon by the clip. In versions of the clip designed for use with precast ceramic sills, a vertically-disposed integral leg depends from the rear end of the horizontal leg and fastening means, both integral and independent, are used to attach the vertical leg to the frame member in front thereof so as to leave a space for insertion of the drywall panel between it and the face-flange of the sill.

Abstract: Device for laying and stretching covering sheets over surfaces to be protected, the device comprising a first channel element, having a bottom and lateral walls, a second channel element having a bottom and lateral walls, smaller in depth than those of the former; first fastening means for securing one of said channel elements with its bottom facing towards the surface to be covered. Second fastening means being also provided in order to secure the other of said channel elements in position over the first one and with its lateral edges facing towards the bottom of the first channel element securing and tensioning the covering sheets interposed between the aforementioned channel elements.

Abstract: Anchor organization for a layer of refractory material deposited on a refractory furnace lining. The organization includes a number of non-metallic refractory anchors disposed at spaced locations about the furnace lining surface. The anchors are provided with a particular configuration that includes a concave locking surface on each end providing a refractory-retention function. Each anchor has one end cemented into a hole in the lining and the other end immersed in the cementitious refractory material that is deposited on the surface of the furnace lining. A plunger tool is also disclosed for use in inserting the anchor and cement into a hole in the lining.

Abstract: A curtain-wall masonry veneer anchor system provides tolerances for accommodating installation misalignment and similarly for accommodating in-service load stresses while at the same time preventing loosening in service, even when installed through sheathing/or insulation covering wall structure to which the system is affixed, such as a masonry wall or metal stud or structural steel.

Abstract: A building block has an inner and an outer wall defining a cavity therebetween, the two walls being interconnected by two or more webs positioned intermediate the top and bottom of the block to provide upper and lower horizontal channels. The walls at the top each have a longitudinal projection extending along an inner portion which in a building locates the blocks by being positioned in the lower horizontal channel. The block has two end portions which are either both a female recess or a male protrusion so that the block can be reversed if necessary. A building is formed by using a plurality of double-male and double-female blocks and interlocking them together, load being transmitted to below through the outer portions of the inner and outer walls.

Abstract: A structural module formed by expanding a bundle of struts joined by hubs is locked in expanded condition by joining two components of a split hub assembly. The module may be two-dimensional or three-dimensional and plural modules may be combined to form a composite.

Abstract: A bottle packer grid assembly is disclosed which is capable of packing two cases simultaneously wherein the construction provides the capability for each individual single case grid section to be separately removable from the surrounding support structure. The configuration of the packer grid basically includes four transverse members and preferably five longitudinally extending members which divide the bottles to be packed into grids of variable numbers of rows and columns, the most common being 4.times.6. Preferably a dead plate support is positioned to hold one bottle in between the two cases being loaded in order to better maintain alignment with the cases positioned therebelow. The cooperation of a plurality of pin means with the transversely extending members which define apertures therein for receiving the pin means allows two arrays of 4.times.6 with a dead bottle position therebetween and yet allow upon removal of certain pins the easy maintenance of a specific bottle receiving cell.

Abstract: A method for stabilizing a cosmetic composition containing carrageenan, specifically, a toothpaste, wherein microwave radiation, preferably in the 0.8 to 3 gigahertz frequency range, is directed onto the toothpaste so as to raise its temperature to at least the gel-sol transition temperature of the carrageenan, after which the toothpaste is quiescently cooled to room temperature. The use of microwave radiation facilitates an even heating of the toothpaste, so that temperature sensitive components thereof are not adversely affected, and promotes excellent control of temperature regulation. Heating of the dentifrice, with improved thickening and stabilization thereof, is obtainable by passing it through a conduit while directing microwave radiation onto it and then filling it into suitable dispensing containers, or by filling the dentifrice into such containers and then subjecting them to microwave radiation.

Abstract: In automatically filling and sealing pouches at high speed a pouch supporting base continuously and non-stoppably travels on a conveying path passing a pouch dropping operation station, a filling up operation station, a sealing operation station and a supporting base collecting station in turn. In the pouch dropping operation station, pouches are dropped into the pouch supporting base after being opened one by one. In the filling up operation station, a fixed amount of substances fills the pouches through the rotary filling up apparatus from the opened filling up mouth of the pouches held by the pouch supporting base. In the sealing operation station the filling up mouth of the pouches is hermetically sealed by the sealing operation system apparatus. In the pouch supporting base collecting station, filled up pouches held by the pouch supporting base are suspended and conveyed, and the empty pouch supporting bases are collected and returned to the pouch dropping operation station.

Abstract: A machine for packing a load in a section of sheath made of supple material, and particularly of plastic material, comprises mechanisms for supplying flat sections of sheath in the direction of the load and for opening the downstream end of each section of sheath opposite the load, and a pleating device for progressively pleating part of each section of sheath. The pleating device has rotatable pleating members applied against the sheath and against support ramps located inside the sheath. A movable covering frame whose section is larger than the cross section of the load to be packed is provided for bearing the section of pleated sheath. The rotatable pleating members are mounted on a support independent of the covering frame and the pleating device comprises mobile pleating arms.

Abstract: A harness connector includes a link connected to a harness with a first ball joint and to a sulky shaft with a second ball joint permitting horse leaning and lateral motion relative to the sulky shafts.

Abstract: An adjustable rigging for horse saddles which permits the front and rear cinchas to be connected to the saddle in multiple different positions. The present adjustable saddle rigging comprises an elongate member having a track defining multiple longitudinal positions for a rigging ring, the elongate member being connected or connectable to a saddle, and a rigging ring connectable to the elongate member in any one of the multiple longitudinal positions.

Abstract: A mechanism for changing the cutting angle of the cutterbar on a crop harvestng machine, such as a mower-conditioner or windrower, relative to the ground is disclosed wherein the cutting angle can be changed while the harvesting machine is being operated. This on-the-go adjustment mechanism includes a hydraulic cylinder positioned as the top link between the frame of the harvesting machine and the header in which the cutterbar is mounted. Changes in the length of the hydraulic cylinder affect a pivotal movement of the header about the lower links interconnecting the frame and the header to change the angle of the cutterbar relative to the ground.

Abstract: A hay rake tine assembly is disclosed in which the tines are attached to a mounting plate by an elastomeric body which buckles upon the application of excessive force to the tines. The buckling decreases the spring rate of the body and avoids excessive tension and compression forces, which may result in failure of the metal-rubber bonds. The body also includes a clearance for the deflection of the tine. The assembly also includes an engagement between the tine and the mounting plates so that the tine will not drop in the event of rubber failure.

Abstract: A process for the manufacture of concentric compressed or compacted stranded conductors at high speed on double-twist bunching machinery while eliminating loose strand, strand crossovers, and spiral propensity of the finished product; and the product thereof.

Abstract: Polyester conjugate crimped yarns prepared by conjugate spinning(1) an A component substantially comprising polybutylene terephthalate and(2) a B component substantially comprising polyethylene terephthalateat a weight ratio of 30:70 to 70:30 in a side-by-side or eccentric sheath-core arrangement, rendered crimpable by false twisting to a degree of crimpability TC.sub.10 of 8% or more when subjected to a boiling water treatment under a load of 10 mg/de. The polyester conjugate crimped yarn can be obtained by subjecting the conjugate yarn to single-heater false twisting under the conditions which satisfy the following relations:TW.gtoreq.24380/.sqroot.De (i)185+50 [.eta.]B.gtoreq.T.gtoreq.150 (ii)whereTW is the number of false twists (T/m);De is the total denier of the yarn after false twisting;T is the temperature in 0.degree. C. of the false twister heater;[.eta.]B is the intrinsic viscosity of the B component.

Abstract: A method and apparatus for switching the relative position between roving bobbins held by bobbin hangers of a front row and the roving bobbins held by the rear row in a spinning frame. The roving bobbin exchange operation is carried out as successive unit operations from one end-side of the spinning frame to the other end-side thereof. In each unit operation, first the axial distance between a bobbin hanger of the front row and a bobbin hanger of the rear row, which are positioned adjacently in the lengthwise direction of the spinning frame, is reduced to a predetermined distance, then the relative position of those two bobbin hangers is reversely changed while maintaining the reduced axial distance. Thereafter, the axial distance between those two bobbin hangers is returned to the initial condition for carrying out the spinning operation.

Abstract: A detection means to detect when a relative angular displacement between a first shaft and a second shaft of a gas turbine engine reaches a predetermined value comprises an aperture in the first shaft and a cooperating ratchet device attached to the second shaft. An arm of the ratchet device abuts the circumference of the first shaft, and the aperture in the first shaft is initially positioned a predetermined angle in the direction of rotation of the shafts from the arm. In operation when the relative angular displacement between the shafts reaches the predetermined value the arm of the ratchet device aligns with and moves into the aperture in the first shaft.The ratchet device has a pawl which moves radially outwards from the shaft and engages with and displaces a lever when the arm moves into the aperture. The displacement of the lever may be used to shut off the supply of fuel to the gas turbine engine or to operate an indication means.

Abstract: A fuel control system for a gas turbine engine comprises a variable metering device and a flow limiting valve arranged in series. The limiting valve is servo pressure operated to reduce fuel flow in response to unacceptably high levels of certain engine operating conditions and is additionally movable to a fully shut condition when the engine is stopped. The servo operating pressure is controlled by an electrically actuated pilot valve which can be energized to a first level to provide flow limitation, and to a second, higher level to effect shut down. The pilot valve can also be energized in a reverse direction to open the limiting valve when starting the engine.