Abstract: A method and/or apparatus for drying material by disposing the material against a heated surface that has a charged electrode arrangement disposed adjacent the surface and cooperating therewith to define a plurality of alternately arranged non-uniform electrostatic fields extending between the electrode arrangement and the surface with each non-uniform field having the higher intensity portion thereof substantially oppositely located relative to the higher intensity portion of an adjacent non-uniform field so that the fields can at least partially extend through the material when the material is disposed against the surface and between the surface and the electrode arrangement.

Abstract: A camera with a focusable objective including an axially shiftable lens member has two ancillary projection systems continuously or intermittently intercepting incident light rays downstream of that lens member and deflecting them onto respective inputs of a photoelectric comparator which emits a coincidence signal whenever these light rays project substantially identical images of an object to be photographed or filmed. One of the projection systems may include a periodically movable element which varies the relative orientation of the two beams constituted by the deflected light rays so that different angles of incidence give rise to a coincidence signal in different parts of a sweep cycle; in one position of this element, in which the incident rays will have a predetermined orientation (e.g. parallel to the objective axis) with proper focusing, a position sensor generates a correlation signal.

Abstract: A cushioning material system or construction having at least one module comprising balanced levers and displaceable bearing means, as incorporated in footwear, and such a cushioning material further comprising bearing plates attached to a plurality of said modules which may be made in sheet form for various cushioning purposes.

Abstract: An outsole for a sports shoe which enables it to be used for a wider range of different types of ground than is possible with the known outsoles. The sole is provided with profile projections which are each formed by at least two elongate profile bodies which are close together or joined at one end and diverge towards the other end to radiate on one side only of the projection. The projections when stressed counter to the direction of divergence of the profile bodies provide increased support, but provide less support when stressed in the opposite direction. This is particularly true if the profile bodies are constructed of a springily resilient material. By appropriately arranging the profile bodies on the outsole, controlled account can be taken of the requirements in respect of safety against slipping and the sliding characteristics, of the sport shoe.

Abstract: A convertible bucket attachment for excavation and clasping comprising a bucket portion consisting of a bucket proper and a complementary sub-bucket and connected to a rocking arm of an excavator machine, the bucket proper and the sub-bucket being rockingly connected to each other in the upper portions, upper link members having one end pivotally secured to the bucket proper and another end connected to the distal end of the plunger rod of a cylinder actuator, sub-link members connected at one end to the excavator arm and rockingly supporting the upper link members, and lower link members pivotally secured to the sub-bucket at one end and associated with the upper link members and sub-link members. The bucket attachment can perform both operations of excavation and clasping by means of one single cylinder actuator.

Abstract: A backfilling machine having an auger with two spaced apart flighting segments thereon. One of the flighting segments has right hand flighting and the other of the segments has left hand flighting. The segments are rotated in unison so as to propel material from the side of the trench inwardly toward the space between the two flightings which space is aligned over the trench so that the filling material falls into the trench by gravity. The flightings are adjustably mounted on a central shaft for movement toward and away from one another to accommodate trenches of varying widths.

Abstract: An ironing mangle has an ironing roller having a generally cylindrical outer surface and rotatable about a roller axis in a predetermined rotational sense. A two-part sleeve substantially completely surrounds this roller and has a cylindrical inner surface juxtaposed with and spaced radially outwardly from the outer surface of the roller. This sleeve is formed with axially extending and angularly spaced intake and output slots subdividing it into an angularly large main part and an angularly small minor part. The main part is heated and is of thermally conductive material whereas the minor part is of insulating material. At least one inflatable cushion lies on the outer surface and is pressurizable to press items to be ironed against the inner surface of the main part of the sleeves as the arrangement is rotated. The main part has an angular dimension of more than 180.degree.

Abstract: A portable chartholder and table, particularly adapted to provide a readily viewable chart for sailing, his two rigid, flat and transparent members secured together by manually operable securing means having a release mechanism, one or more flexible grab handles extending from the perimeter of said members and multiple cushioning-supporting means secured on the perimeter of said members whereby said chartholder is protected against injury and/or displacement from a supporting surface during heavy weather.

Abstract: The frame device comprises a main body portion having a pair of oppositely disposed limb members joined in a fixed position to the main body portion when the frame devices is in an assembled condition. One or both limb members are either movable on the main body portion or detached therefrom when the frame device is in an unassembled condition.Frame members incorporating the structure of the frame device are assembled to form a closed peripheral arrangement for framing an artwork and/or other materials. The frame members are mitered conventionally where appropriate or in accordance with guide indicia formed on the frame device. The frame members are attached at their mitered ends with angle members where appropriate or in a suitable known manner. The frame members include openings for selective installation of hanger members that permit accommodation of a frame suspension member such as a wire or hook.The frame device can also include a protective sheet secured to one of the limb members.

Abstract: A panoramic picture is taken to produce a negative with a panoramic image thereon, and a panoramic print is then made on a single sheet of double-wide photographic paper. The print is cut into two equal panels along a cutting line extending at right angles to the longitudinal axis of the print, and hinge members are fastened to the rear of the two panels along the cut edges. The hinge members are then secured in an album to mount the two picture panels in aligned, side-by-side relationship, with a narrow gap therebetween to prevent damage during closing and opening of the album. The hinge elements have a color tone corresponding to the general color tone of the central portion on the picture, to minimize the visibility of the gap. A triplewide picture can also be made, which is divided into three panels, with the third panel being connected to the second by a hinge element.

Abstract: An adjustable display device consisting of two or more members, for displaying relevant information when these members have been moved in specific relationships to each other. Both the relative movement and the maintenance of the specific relationships are accomplished by cuts through the thickness of one member to form integral tabs in that member to retain and guide the other member(s).

Abstract: Sliding movement of the trigger guard of the firearm controls desired aspects of the operation of its firing and breech-locking mechanisms. Improvements are provided in a firing mechanism of the type that is maintained in a cocked condition by a toggle linkage; and in the breech-mounting, shell-extracting, cocking and breech-locking mechanisms of a firearm of the side-opening type.

Abstract: A muzzle loading firearm in which firing is effected by a shot shell primer positioned within an ignition chamber and fired through a loosely locked but protective cup.

Abstract: A set of travelling line guiding members are moved relative to stationary line guiding members with the two sets of line guiding members containing separate individual wraps or partial loops of line. By moving the guiding members relatively toward and away from one another the line can be quickly released when letting out line or retrieved for retracting a line. Wrap retaining devices are provided for releasably holding the wraps of line when in the retracted position after the movable line guiding members are moved from the retracted position toward the fixed line guiding members.

Abstract: A fishing plug having internal flexible attracters, the plug having a hook carrying body with open space therein receiving elongated flexible attracters in an open space and adapted to flex as the plug is moved, the attracters being visible through transparent body portions, the body being incompletely filled with fluid for further causing movement, the attracters each being fixed at one end to the body for maintaining position.

Abstract: A head structure is provided defining a hollow cavity opening outwardly of one side of the head and the head includes line anchor structure thereon for attaching one end of a fishing line to the head structure. A pair of oppositely facing side-by-side self-shielding fishhooks are also provided including a pair of shanks yieldingly mounted at one pair of corresponding base ends within the cavity in laterally spaced generally parallel relation for movement of the other pair of ends of the shanks toward and away from each other. The other pair of shank ends include oppositely curved hook portions opening toward the first mentioned shank ends and the latter are telescoped within the cavity of the head structure and closely oppose opposite sides of the cavity. A resilient body is disposed within the cavity between portions of the shanks spaced slightly from the base ends thereof and yieldingly biases those shank portions away from each other.

Abstract: An insect trap which comprises a chimney member adapted to allow a flow of air to be forced therethrough, a reservoir of insect attractant which under the influence of the flow of air is evaporated and borne as a stream of attractant vapor emanating from the chimney member into the surrounding atmosphere, and a tacky substance provided inside the chimney member which will trap flying insects lured therein by the stream of attractant vapor.

Abstract: A toy vehicle having a chassis supporting a pair of parallel spaced axles with wheels fixed to the outer ends thereof, a motor connected to said axles including an inertia flywheel on a shaft and gear trains extending respectively between the shaft and the axles in a manner for both axles to be driven unidirectionally simultaneously to provide a four-wheel drive, in combination with gear throw-out safety mechanism operable to remove one gear of each train from driving engagement with the trains when any of the wheels are stopped while the flywheel is still rotating and thereby prevent damage to the gear trains.

Abstract: A peat paper used to improve the quality of the soil in connection with planting, sowing or weed-control. The paper consists of peat fibres (4), cellulose fibres (1), and a bonding agent. The disclosure also teaches the method of producing said peat paper. The peat paper is characterized in that in a lower layer the cellulose fibres (1) support the peat fibres (4) and in that the cellulose fibres and peat fibres (1,4) are bonded together by means of the bonding agent in a dry-formation process so as to form paper-like sheets or webs. The resulting peat paper is soft and owing to its method of production controlled amounts and/or layers of additives, such as fertilizers, seeds, hormones, and similar additives may be incorporated into the paper.

Abstract: A security guard for mounting to a frame of a window opening in a building includes an elongated channel bar having a plurality of mounting pins secured to one end thereof and a key actuated lock visible and operable only from the interior of the building mounted within the confined flanged area of the bar at the opposite end thereof, the mounting pins and the retractable dead bolt of the lock cooperative with adjacent window frame structure to securely but releasably retain the channel bar in position next to the window on the interior side thereof. The spaced pins prohibit the bar from being rotated and an additional lock cover member mounted to the bar substantially coextensive of the lock protects the lock from external tampering. Suitable grill work or the like may be mounted to and supported by the channel bar.

Abstract: A safety flush bolt entrance door system includes a pair of doors mounted in an entrance frame for outward opening with each door pivotally supported for individual opening and closing movement. A normally active door is provided with a locking mechanism adapted to engage an opposite, normally inactive, door for securing the doors together. One or more flush bolt mechanism(s) is mounted on the normally inactive door for locking the door with the door frame whenever the locking mechanism on the active door is engaged with the inactive door. A control mechanism is mounted on the inactive door and interconnected with the flush bolt mechanism(s) so that whenever the active door is unlocked, the flush bolt mechanism(s) is releasable in response to an opening force applied against the inactive door.

Abstract: In a window assembly of the kind including at least two window sashes having inwardly facing surfaces and outwardly facing surfaces, said sashes being fitted into a perimeter frame formed by spaced apart longitudinal members joined at their ends to the ends of spaced apart transverse members, and means mounting at least one of the sashes for sliding movement in said frame in a longitudinal direction between a closed position and an open position and for inward movement relative to the frame, the improvement comprising a sash retainer mounted on each longitudinal frame member for longitudinal sliding movement relative to the respective frame member, each retainer having a longitudinal dimension about equal to the longitudinal dimensions of said slidable sash and being slidable between a first position coextensive with said slidable sash and a second position in which the retainer is longitudinally offset from said slidable sash, each retainer having a longitudinal fin overlying the inwardly facing surface of t

Abstract: An automatic base seal for a door where a deformable rod having an end fixed in a molding deforms transversely through a slot when its other free end is engaged by a door frame when the door is closed. The deformed portion of the rod displaces a seal against the threshold to seal the bottom of the door. Sides of a groove in the molding guide the deformed portion of the rod, and return springs maintain the seal retracted and adjacent the slot when the door is open. In one embodiment the seal pivots, and in another embodiment the seal moves vertically.

Abstract: A safety release closure suitable for use in a mass transit vehicle which can be rapidly and efficiently removed either inwardly or outwardly in case of an emergency. The closure includes a removable sash that is mounted within a frame opening and secured in place by means of inside and outside deformable seals disposed between the frame and the inside and outside margins of the sash. The perimeter walls of the opening that face the sash are contoured so that the opening is wider across both edges than it is along the middepth region whereby the sash can be easily removed in both directions without it becoming wedged or otherwise jammed in the frame. Means for stripping the seals on both sides of the sash are provided for as are handle means which enable a person to pull the sash out of the frame after the seal has been removed.

Abstract: An elongated metal workpiece such as a slab or billet is moved longitudinally beneath a grinding head by a reciprocating carriage mounted on an elongated track. The carriage receives a billet from a charging table, reciprocates the billet beneath the grinding head for a plurality of grinding passes, and then delivers the finished billet to a discharge table. The grinder head includes a rotating grinding wheel mounted at the end of a first arm which is pivotally secured to one end of a pivotally mounted second arm. The vertical position of the grinding wheel, and hence the downward force exerted by the grinding wheel on the billet, is principally determined by the angular position and torque, respectively, of the first arm while the horizontal position of the grinding wheel transverse to the longitudinal axis of the billet is principally determined by the angular position of the second arm.

Abstract: A heliostat enclosure that is particularly well suited for enclosing and protecting a heliostat either flat or parabolic, preferably comprising a light-weight, generally hemispherically shaped, enclosure bubble that is formed of readily assemblable and disassemblable segments, including some transparent segments, and supported by a foundation in the form of a soil filled, plastic ring bag that is mounted in the ground at the heliostat site. The enclosure bubble is inflatable by pressurized air and supportable in operation, such as during windy or inclement weather. A multi-legged, tubular, step frame is mounted within the enclosure bubble and is configured to support the enclosure bubble in nearly fully inflated condition when the bubble is not supported by pressurized air. The frame is electrical conducting and grounded, thereby also serving as a lightning protection means for the heliostat.

Abstract: In a method for heat-insulating and protecting roofed structures such as residential houses and greenhouses against the action of wind and rain, the exterior of the structure is provided with a covering constituted by interlaced threads of mineral fibers assembled together and preferably by a knitted fabric of glass fiber threads. In the case of a house, the roof and walls are covered in such a manner as to leave a free air space between the covering, the roof or the walls.

Abstract: A greenhouse structure with flooring means and side and end wall means defining a plant growing area has a roof structure means comprising a ridge above said growing area and rafter means extending from said ridge downwardly and outwardly past said side wall means to terminal end portions at which anchor means are provided securing said rafter ends to said flooring means. It also has a slidable roof means mounted on said rafter means for movement to different positions thereon including a first position in which it extends from said ridge to said side wall means and preferably past the same for forming an overhang or eave therebeyond, and a second position in which it lies between said side wall means and said anchor means. The slidable roof means in the preferred embodiment is water shedding and heat insulating, and may be formed of opaque fiber glass, but preferably is formed of aluminum sheet embossed for strength and having a heat insulating layer on its under side.

Abstract: A transportable bed useful as a support for industrial equipment and machinery, during erection, transportation and installation thereof. The transportable bed comprises a horizontal floor on which the industrial equipment and machinery can be mounted, a central strengthening structure extending downwardly from the support and comprising at least two laterally spaced-apart girders, and side supports for supporting the sides of the floor.

Abstract: An improved ceiling tile system comprising a molding member within which is disposed at least one ceiling tile is disclosed wherein means are provided to urge the ceiling tile downwardly and/or in a direction away from the molding member. According to the invention, the urging means comprises a unitary resilient spring clip, a resilient portion of which engages a vertical wall of the molding and then engages an opposed vertical edge of a ceiling tile and simultaneously, while in engagement with said opposed vertical edge of said ceiling tile, bears against a surface of said molding above said tile and opposed thereto.

Abstract: An extruded metal construction stud for use within a multitude of different interior room wall systems is disclosed as comprising a substantially U-shaped structure defined by means of a base web and a pair of perpendicular sidewalls. Each of the sidewalls is substantially S-shaped in configuration, and the corresponding parts thereof are reversed such that the sidewalls are, in effect, mirror-images of each other. Each of the sidewalls defines a pair of oppositely facing open channels integrally connected by means of a common flange. One of the channels is open to the exterior of the stud and accommodates edge portions of wall board panels. Flanges of the channels separate from the common flange serve to define support surfaces for wall board panels as do laterally outer portions of the sidewalls. The different wall systems are able to be expeditiously erected by incorporating one or more of the construction studs within the particular wall structure in a variety of different modes.

Abstract: A studless wall system and method of erecting the same, incorporating a plurality of spaced apart reinforced wall panels forming a wall assembly. The wall panels are each made from easily handled composite beams or posts arranged in side-by-side fashion and secured to spacer members extending beyond adjacent ones of the beams. At least some of the spacer members are immobilized and the space between wall panels serves as an insulating space, or may have electrical wiring, plumbing, lighting fixtures, and heating conduits placed therein. The composite beams or posts comprise elongate steel channels filled with a suitable, lightweight cementitious material. The steel surfaces of the channels are positioned to be inside the wall assembly where they will effectively serve as a fire barrier.

Abstract: A decorative arch form including a pair of side sections, each of the side sections having two edges substantially perpendicular to one another, integral flange members extending from the perpendicular edges of each of the side sections with lines of reduced thickness at the junctures of the flange members with the sections, the side sections being disposed in a substantially parallel spaced relationship with the flange members of one side section in alignment with the flange members of the other side section, a decorative facia section connecting corresponding edges of the aligned side sections and extending from the far ends of the aligned flange members of the parallel side sections to the far ends of the flange members which are perpendicular thereto.

Abstract: A thermally improved expanded store front system is disclosed including vertical mullions and horizontal members. The vertical mullions comprise a structural mullion portion which is securely attached to the sill and head members and an exterior mullion half removably secured by anchor means to said structural mullion. The mullions when assembled are adapted to receive clip means which secure the horizontal members in place without the need for screws thereby allowing the members to expand and contract without undue stress. The vertical mullions and horizontal members, which are cut to predetermined lengths may be easily spliced for typical multi-story applications.

Abstract: Tie anchor for sandwich panels of reinforced concrete in the form of a metal strip of undulated zigzag shape whose loop portions are anchored in the concrete panel layers and whose connecting leg portions reach through the intermediate insulating layer. Two central leg portions of the tie anchor are oppositely inclined to form a rigid central connecting point between the panel layers, while all other leg portions are parallel, to allow for limited panel displacements, under unequal thermal expansion.

Abstract: This invention is directed to a panel wall construction comprising a plurality of hollow construction panels. The construction panels are fabricated from sheet metal to define opposite interengaging panel edges. One of said edges is arranged to receive fasteners for securing the panel wall to standards. A unique clip fits over the panel edge arranged to receive fasteners and is held in place by the fastener. The clip has a resilient tab which cooperates to provide snap action engagement of the unfastened edge of the adjacent panel with the fastened edge of the already secured panel.

Abstract: Wall panels having thermal insulation sandwiched between opposed metal skins, are joined together to provide a rigid joint which is flush and vacuum tight. Narrow heavy gauge elongated strip plates fit precisely within offsets in both skins adjacent to the joining surfaces, and are bolted to the skins. One strip plate includes internally threaded holes in which the fastening bolts are inserted and engaged from within the panel using a screwdriver or a wrench which passes from the opposite side through a clearance channel in the panel.The other plate is held on the opposite panel side by bolts which engage threaded nuts attached to the adjacent offset skin portions. All bolt fasteners are accessible and attached from the same wall surface, with the bolts within the panels passing freely through the threaded nuts on the opposite skin. Accurate spacing of the holes in the strip plates and skin offsets assures a compressed butt joint between the insulation of the clamped panels.

Abstract: An anchor box embedded in concrete comprising a trunk body for defining a fastening bolt insertion hole, and an anchor nut held by the rear portion of the trunk body and adapted to be threadedly engaged with the fastening bolt. The fastening bolt insertion hole is terminated at a temporary connection flange for temporarily connecting the trunk body to a face plate of a concrete placing mold frame.

Abstract: In one exemplar embodiment, a corner brace for joining a barge rafter and fascia board in building construction is provided that comprises a right-angularly shaped metal channel having a base and two pairs of spaced parallel ascending sides for receiving and supporting the adjacent respective ends of a right-angularly disposed barge rafter and fascia board. The outer right-angularly disposed ascending sides of the metal channel form face plates for contacting a substantial portion of the outer surface of the ends of the barge rafter and fascia board and have a plurality of spaced apertures disposed therein for accommodating conventional fastening means such as nails or screws.

Abstract: A continuous motion high-speed rotary machine of the turret type which has a plurality of angularly spaced filler heads thereon, each equipped with movable uncapping and capping means and a movable filler nozzle. As the turret rotates continuously, an individual bag spout is partially inserted into the approaching filler head. These bags are of the flexible type, each having a spout with a removable cap pressed thereon. The individual bags may be presented to the successive continuously-moving filler heads automatically or manually. A control system is provided on the machine which includes means for sensing the presence of the partially-inserted capped spout as the spout is clamped in the head. The movable uncapping and capping means on the head is then actuated to remove the cap and move the filler nozzle into cooperation with the clamped spout. A vacuum system on the machine then functions, through the nozzle, to pull vacuum through the spout on the bag to facilitate filling.

Abstract: Piles of freshly printed sheets of multiple bank-notes are cut into bundle strips and then these bundle strips are cut into individual bundles of bank-notes; a band station is located between the cutting unit cutting the piles of sheets into bundle strips and the cutting unit cutting these bundle strips into bundles of bank-notes and comprises as many banding device operating in synchronism and located in one row as there are individual bank-notes per strip, so that the bundles of each strip are banded before this strip is cut into bundles.

Abstract: A package wrapping machine which has a frame supporting a power driven rotary horizontal shaft with a turret plate member on the end of the shaft supporting spaced clamp banks, a positioning blade is placed between the said clamp banks for positioning the package components prior to clamping, a stack of package components is clamped between the clamp banks by fluid power cylinders on the turret plate moving one clamp bank toward the other. The end of an elastoplastic wrapping or web extending from a clamp roll on the frame is moved under one clamp bank by insertion of the packages to be wrapped into position.

Abstract: A grass forage harvester has mowing and/or gathering mechanism whereby cut grass is brought to cutter mechanism comprising a rotor with peripheral cutter blades and to impelling mechanism comprising fan or projector vanes. The said cutter blades are articulated on the rotor and cooperate with at least one counter-blade which is placed between the said cutter mechanism and the said impelling mechanism to retain the grass so that it is cut into small pieces before it passes to the impelling mechanism. There is an elevator funnel through which the small pieces are raised for delivery into a vehicle.

Abstract: A mowing machine for connection to the three-point hitch of a tractor which extends laterally of the tractor. A drive of meshing pinions contained in a housing, the drive being powered via belts from the power take-off of the tractor. The drive rotates the cutting members about vertical axes which are supported by and disposed immediately above a plate-like supporting element. Plate-like connecting members connect the cutting members with the drive pinions, such connecting members rotating with the cutting members about the same axis. Adjacent cutting members rotate in opposite directions and adjacent connecting members co-operate to move cut crop to the rear relative the mowing machine in swaths by contact and air movement generated thereby. The drive pinions and the cutting members have roller bearings to minimize vibration.

Abstract: A harvesting machine for berries and fruits such as coffee beans and blackcurrants includes at least one tined shaker oscillating about a vertical or substantially vertical axis. The shaker is oscillated by out-of-balance weights and a shaft supporting the weights is not itself driven, the drive to the weights being effected through a sleeve surrounding the shaft and toothed belts.

Abstract: In a double-twist spindle comprising a shaft with a transversely elongated plate the ends of which support a rotatable annular disk, the bobbin-carrier rotatably supported by the shaft being maintained against rotation therewith by a hollow stabilizer which surrounds the shaft and which is itself rotatably mounted about an axis inclined with respect to the axis of the shaft, the first end of the stabilizer being mounted in the bobbin-carrier and the second end of the stabilizer being supported in a ring fixed to the frame and disposed on the other side of the elongated plate with respect to the bobbin-carrier, the said stabilizer having a transverse aperture for passage of the elongated plate, the connection between the elongated plate and the stabilizer is realized by non-mechanical means, as for instance by two pairs of magnets respectively fixed to the plate and to the stabilizer, the facing poles of the magnets of each pair being of selected polarity capable of generating forces which tend to maintain an

Abstract: Method and device for preparing a ring spinning frame for automatic coil changing, which includes controlling a movable automatic servicing device for the spinning operation and a movable automatic servicing device for changing coils with a central automatic spinning control which controls the spinning processes of all spinning units of the machine so that both mentioned servicing devices are placed in readiness at the machine end of the ring spinning frame when the spinning process is completed.

Abstract: For use with a spinning frame, apparatus for removing underwound yarn wraps from the base portion of the rotating spindle, such apparatus including a spindle cleaning structure mounted on a spindle rail for pivotal movement between a first spindle cleaning position engaging the spindle and a second inactive position clear of the movement of the reciprocating ring rail of the spinning frame. A plurality of spindle cleaning structures may be provided along the extent of the spindle rail, each such structure being operated between its first and second position by the movement of ring rail during a predetermined portion of such movement. The spindle cleaning structures may be arranged for sequential operation by the ring rail to provide sequential cleaning of the spindles.

Abstract: A fuel control system having a fuel control valve provided in a main fuel path for controlling the amount of fuel for an injection valve, an ON-OFF valve provided in a sub-fuel path and bypassing the main fuel path for controlling the passage of the fuel from the fuel tank, and holding means for maintaining the fuel amount passing through the main fuel path nearly constant. With this construction, when an drastic or abrupt increase of load occurs, the ON-OFF valve is opened and at the same time the amount of fuel passing through the fuel control valve is maintained nearly constant by the holding means, thus preventing the engine condition from being entered into a surging limit.

Abstract: A booster having a feature of stroke jumping. In this type of booster a power piston, which is actuated by the difference of fluid pressure acting on either side thereof, is so constructed as to be able to shift, in relation to a control piston with a built-in control valve for controlling the fluid pressure, within a certain limited distance. Between the output member of the booster and the two pistons, i.e., power and control, is disposed a power lever, which is abutted at either end thereof on the output portion of the two pistons and at the middle portion thereof on the output member, for transmitting the movement of both pistons to the output member, while allowing the relative movement of both pistons. The output stroke of this booster can be made greater than the input stroke by means of the relative movement of the power piston to the control piston.