Abstract: A double quill-like, security mechanism having a pair of concentric, hollow cylinders, one positioned to rotate wholly within the other and restricted against axial displacement thereby to provide means for supporting a rotatable gate structure carried by the outer cylinder against removal therefrom except at a predetermined angular relationship of rotation between the two cylinders.

Abstract: A shackle unloading device for unloading poultry supported in shackles by their hocks where the shackles are adapted to be unloaded by lifting upwardly on the legs of the poultry adjacent their hocks which includes a conveyor for moving the shackles successively along a predetermined conveying path while the poultry is supported from the shackles by their hocks together with a pair of spaced apart unloader bars positioned on opposite sides of the conveying path so that the lower end of the shackles pass between the unloader bars to be held against lateral displacement from the conveying path by the unloader bars while the unloader bars lift upwardly on the hocks of the poultry to release the hocks of the poultry from the shackles and thus unload the shackles.

Abstract: There is disclosed a horizontal fish kidney-removing machine which is adapted to mechanically remove the kidney of salmon or trout, the machine comprising a pair of conveyor belts provided at a distance in a vertical direction, a kidney-removing member disposed between the pair of conveyor belts, the removing member being composed of two flat plates which are combined by welding at both ends in boat-shaped forms each gradually diverging from the end to establish a space of a rectangular form at the central portion thereof, an inclining guide plate disposed upstream of the removing member and fixedly secured to an upper end of an induction plate, a plurality of injector nozzles disposed in the rectangularly-shaped space to inject a pressurized fluid therefrom so as to automatically wash out the kidney attached to the inner walls of the body of the salmon or trout, and a keep plate disposed opposingly to the injector nozzles to prevent the salmon or trout being fed with the conveyor belts from running out or es

Abstract: An improvement in and to can creels for feeding fibre slivers to textile machines, wherein one or more reserve slivers are provided for and advanced when one or more of the normally fed fibre slivers are broken or run-out. A pair of feeding rollers automatically controls the advancement and the positioning of each reserve sliver in order to substantially maintain a feeding continuity between the broken or run-out normal sliver and the reserve sliver and between such reserve sliver and a newly introduced normal sliver.

Abstract: An assembly of filament-drawing rollers, used for stretching rovings or fiber bundles in a spinning machine, is divided into a plurality of stages each including an elongate driven roller and a set of coacting counterrollers, the driven rollers being interconnected at both ends by respective gear trains for rotation at predetermined relative speeds by a motor driving one of these gear trains. In order to prevent any overstressing of the mechanism if nonmatching gears are inadvertently inserted into the two gear trains, a torque limiter in the form of a shearing bolt or a friction clutch is interposed between at least one driven roller and an associated driving gear. Advantageously, the torque limiter is provided with a device generating an alarm signal upon relative rotation, due to overload, of its input and output shafts respectively joined to the driving gear and the driven roller.

Abstract: A tube expanding apparatus and method are disclosed utilizing a hollow, elastic, tubular bladder, an elongate connection member positioned within the bladder, a pair of end caps sealably connecting the bladder to the elongate member and forming an annular chamber between the bladder and elongate member in between the end caps, and means for providing fluid communication to the chamber for expanding the bladder against a tubular member. The connection member is disclosed as either a rigid tie rod or an axially inextendible, flexible member. The tie rod has reduced diameter portions adjacent each end forming shoulders and threaded portions at the end thereof for threadibly connecting the end caps thereon and clamping the bladder against the shoulders. An engagement means can be provided at one end of the connection member for urging the tubular member toward the opposite end of the connection member.

Abstract: This invention relates to a jewelry clutch for securing articles together, the clutch including releasably connected male and female components. The male component comprises a pin and the female component comprises a retainer located in a carrier. The carrier is positioned in a housing for releasably clamping the pin. When joined, the pin cannot be separated from the retainer except by depressing the carrier into the housing.

Abstract: A seat belt buckle device having a latch device comprising a base, a latch member pivotally supported on the base and having a latching portion for locking a tongue, the latch member being biased into a tongue locking position, a push button adapted, when operated, to bring the latch member into an unlocking position, and a cover having an inlet port for inserting the tongue therethrough and an opening for operating the push button therethrough. The latch member is pivotally supported on a supporting bed secured to the base. The latch device further comprises means for holding the latch member in its unlocking position when the latch member is brought from its tongue locking position to its unlocking position by the push button, whereby the latch member is held in the unlocking position until the latch member is brought back to its tongue locking position after the tongue is again inserted in the inlet port.

Abstract: A fastening of the jubilee clip type in which the ends of the clamping strip are bent into pockets around filler pieces through which a tightening screw is threaded. To promote ready assembly and simple manufacture of such clips the holes and apertures in the filler pieces and clamping strip for the passage of the tightening screw are marginally formed by countersinking, chamfering, and flanging for quick positive engagement.

Abstract: A corner piece is adapted to be installed over a corner of a metal casket having a predetermined number of tack welds securing adjacent side and end panels to one another. The corner piece extends from the top to the bottom of the casket and includes outwardly projecting top rail and bottom rail parts together with an intermediate recessed part which mate with the casket top rail, bottom rail and intermediate section, respectively, at each corner. A downwardly projecting lip at the top of the corner piece engages with internal surfaces of the top rail and upwardly projecting surfaces at the bottom are received by recess surfaces of the bottom rail in securing the corner piece to the casket. Each corner piece is sufficiently resilient to permit the ends to be flexed and spread apart thereby facilitating mounting of the corner piece.

Abstract: An improved stiffener element for use in foil journal bearings provides damping of eccentric shaft rotation in two bending modes of operation and also provide greater load capacity and higher speeds for the bearing.

Abstract: An improved method of forming inner and outer sections of a shroud with an airfoil extending between them includes forming the airfoil and shrouds in sections. An upper or convex section of an airfoil is formed with a radially inner section of the shroud while a concave or lower section of the airfoil is formed with a radially outer section of the shroud. A free end portion of the convex or upper airfoil section is inserted into an opening formed in the outer shroud section while a free end portion of the concave or lower airfoil section is inserted into an opening formed in the inner shroud section. The free end portions of the airfoil sections are then connected with the shroud sections to form a complete airfoil and a portion of the inner and outer shroud sections.

Abstract: A bow stringer for compound archery bows, including an inextensible cord for attachment to upper and lower string segments supported by respective upper and lower limbs of the bow. An elastic slack take-up device is attached to vertically separated loci on the cord, to reduce slack and to prevent inadvertent detachment from the upper and lower string segments. Manual force is applied to the cord through a U-shaped handle having a grip portion spaced apart from a bar attached to the cord.

Abstract: A pulling tool comprisesa brace having a base and two legs,a pulling means including a threaded shaft extending through an untreaded passage in the base, and a first nut screwed onto the shaft on the side of the brace opposite from the legs, a second nut screwed onto the shaft on the other side of the brace, and two hooks pivotally connected to the second nut extending between the legs, andspreader means comprising wedging surfaces on the stems of the hooks, a conical tip on the end of the shaft adjacent thereto, and a rectangular head on the other end of the shaft,the legs being long enough to accommodate the hooks and second nut and providing access thereto between the legs.

Abstract: End caps are pressed into the opposite ends of cores of wound rolls of paper, such as toilet tissue, paper towels and the like, by transferring end caps in succession from a rotating drum feeder located at each side of the path of movement along which the rolls are moved to end cap holders mounted to move in an endless course at each side of the roll path wherein each holder picks up an end cap from its adjacent feeder and moves it in synchronism with movement of the rolls along the roll path. The endless course of the end cap holders at each side of the roll path has a portion thereof which travels along a line that approaches the center line of the roll path so that the end cap holders each press an end cap into an end of the roll core and release the cap to the roll.

Abstract: The present disclosure describes an improved side-loading wrap tool or wire wrapping bit for use on semiautomatic wiring machines. The latter are employed to make solderless wrapped connections on terminals emanating from a common plane. In contrast to the wire wrapping bits presently used on the aforementioned machines, the wrapping bit of the present invention retains the wire to be wrapped in a section of the bit which is completely separated from the terminal-receiving aperture thereof. Additionally, the configuration of the wire holding section provides a positive insulation stop and ensures the entrapment of the insulated portion of the wire within the bit in preparation for the wrap cycle.

Abstract: An unwrapping bit for solderless wrapped connections of flexible conductor wire comprising a tubular member having a conical recess in one end face and a terminal receiving bore coaxial with the conical recess. Opposed longitudinal slots as well as transverse slots in the bit intersect the recess and form ledges for engaging the coiled end of a flexible conductor wire. The conical recess may have a reentrant shoulder portion adjacent the bit end face for retaining the conductor wire coils in the recess as they are unwound from the terminal.

Abstract: A dessert cutter particularly useful for delicate cakes with soft and moist composition. A frame supports a plurality of taut wires in a geometric relationship. The frame provides a grip for pressing the wires through a cake and a guide surface for visual alignment during the cutting application.

Abstract: A sawdust removal device for attachment to the exterior housing of a saber saw or other electric-powered saw or drill. The device traps air discharged from an exhaust port in the saw or drill housing and diverts that air to continuously blow away sawdust, chips and other debris which accumulates on the surface of the material being cut or drilled during operation of the saw or drill.

Abstract: In a cutting machine of the type having a vertically reciprocating cutting blade, an internal grinder and a presser foot on a carrier bar, a lifting device responsive to operation of an actuating member for stopwise lifting the carrier bar to permit true one-hand operation and to avoid possible injury to an operator placing his hand on the presser foot in the region of the reciprocating cutter blade.

Abstract: A mitten having a capability of being used as a glove which includes a knitted, elongated, tubular member having one end closed and formed with elongated finger and thumb portions forming a glove. A waisted wrist portion is connected to the glove, and a tubular mitten portion extends from the wrist portion in the opposite direction. The mitten is open at its free end with an overlapping flap covering the free end and a thumb portion formed in the mitten portion such that when the glove is worn, the mitten portion can be folded over the glove with the thumb of the mitten portion coinciding with the thumb portion of the glove and the overlapped portion covering the opening at the end of the tubular mitten over the fingers.

Abstract: An elongated tubular body of square cross section is provided and an endwise outwardly tapering nose is secured in one end of the tubular member. One longitudinal side of the tubular member includes a narrow closed ended slot formed therein and extending longitudinally therealong. The opposite longitudinal side of the tubular member has a wide longitudinal slot formed therein and the wide slot opens through the end of the tubular member remote from the nose. A support block is guidingly and slidingly received within the tubular member and a headed set screw is threadedly engaged in the support block and extends through the narrow groove. A V-shaped cutting blade is carried by the side of the support block adjacent the nose and is disposed in a plane transverse to the longitudinal center line of the tubular member and the apex of the cutting blade projects through the wide slot.

Abstract: A yoke construction for a power shear and a ball-bearing assembly are provided that allow easier cutting of sheet metal with the shear. The yoke includes an arm having upper and lower surfaces, with a ball bearing mounted in the lower surface for universal rotation with respect to the arm, the ball bearing engaging the top of a work table to allow easier pivoting of the shear during cutting. Also, a plurality of ball bearings may be provided on the arm upper surface for engaging the work piece. The ball bearings are mounted by a rigid support member having a generally conical end portion with a generally pointed tip, the tip providing a bearing surface for the ball bearing and urging it against a lip formed in the surface from which the ball bearing extends. The ball bearing mounting assembly may be provided as an insert.

Abstract: A line supply spool rotatably confined co-axially within a thin housing shell having a splined mounting on a polygonal arbor through which said housing shell is supported at the lower end of a manually held engine powered handle while the shell is being spun at a high speed on a vertical axis. Free line ends are progressively fed peripherally from the spool through equally spaced windows provided in the housing shell by controlled rotation of the spool relative to the housing shell, the control of the rotation of the spool being optionally effected manually while the tool is shut down or automatically while the tool is spinning, the election being made by a minor selective shifting of a few parts, this election being readily reversed, whenever desired.

Abstract: A tooth prosthesis located in a mandible tooth socket having a root supporting a crown. The root has a cone-shaped head located in a recess in the bottom of the crown and a stem extended into the socket. An elastic body of ethylene vinyl acetate (EVA) copolymer surrounds and is bonded to the stem. The outer surface of the elastic body is bonded to the inside surface of a porous fabric which permits bone ingrowth to anchor the prosthesis to the mandible. The fabric has a pyrolite carbon outer skin. The upper edge of the fabric is spaced from the crown and head whereby the elastic body allows limited movement of the crown relative to the fabric.

Abstract: A device for measuring the length of a web, such as a floor covering or the like, in which the web is movable in longitudinal direction over a support surface, and in which the device includes a measuring roller or wheel adapted to be coupled with a measuring mechanism. The measuring wheel is arranged opposite the rear face of the web, turnable about an axis extending normal to the direction of movement of the web, and pressure means, rotatable about an axis parallel to that of the measuring wheel, engage the other side of the web for pressing the latter toward the peripheral surface of the measuring wheel. At least one opening in the support surface is arranged opposite the pressure means.

Abstract: A remote gaging apparatus for remotely measuring the pellet stack length and plenum length within a nuclear reactor fuel element comprises a housing capable of having a nuclear fuel element inserted therein with a drive mechanism disposed in the housing and attached to a rod having a stop mounted on the rod for selectively inserting the rod into an open end of the nuclear fuel element. The remote gaging apparatus further comprises a measuring device disposed in the housing and associated with the stop for contacting the stop when the rod is inserted into the fuel element thereby measuring the length of insertion of the rod in the fuel element. By determining the length of insertion of the rod in the fuel element, the stack length of nuclear fuel pellets in the fuel element can be determined along with the length of the unfilled plenum of the nuclear fuel element.

Abstract: Apparatus for controlling the position of a part, e.g. a feeler or work tool, along two orthogonal directions, the part being slideable in a first slide extending in one direction and mounted on a carriage movable along a second slide extending in the other direction and mounted on a support. The apparatus comprises a device for locating the position of the carriage on the second slide and the movable part on the first slide, a device for measuring the error in straightness of said second slide and a device for measuring the error in orthogonality of the first slide, each device comprising a laser generator for producing a laser beam parallel to the respective direction and a photoelectric detector in the path of the respective beam and subject to the respective error to be measured.

Abstract: A device for measuring a depth of a tread groove in a tire comprises a sensor for measuring the depth of the tread groove as an electrical analogue quantity, an analogue-digital converter for converting the analogue quantity into a digital quantity, a calculation and control section for storing the digital quantities and making a given calculation in accordance with a command from exterior, and an indication section for indicating a calculated result.

Abstract: An electrically lighted, vertically and laterally adjustable sight for an archery bow. The sight comprises an elongate battery housing for being mounted lengthwise on an archery bow. A pair of electrically conductive contact strips is carried by the battery housing on a dovetail flange, and at least one sight pin holder is mounted on the dovetail flange for selectively adjustable movement along the longitudinal extent of the contact strips. An elongate sight pin having a light emitter on one end is transversely slidably mounted on the sight pin holder and includes elongate electrical contact strips positioned thereon. A current conductor carried by the sight pin holder operatively interconnects the contact strips on the dovetail flange and on the sight pin.

Abstract: An air drier has a control circuit for controlling heating of air entering the drier to maintain the difference between the temperature of air leaving the drier and that of ambient or incoming air at a predetermined value. The control circuit is compensated for variations in ambient air temperature such that as ambient air temperature decreases the control circuit tends to maintain the temperature difference at a higher value to ensure that the drying times are not unduly lengthened. A signal for terminating operation of the drier is derived by monitoring the difference between the actual value of the temperature difference and the desired value, and the mean heater power, and for terminating the drying cycle when a signal representative of the sum of the two values passes through a predetermined value.

Abstract: A cabinet adapted to be mounted on a wall of a washroom or similar facility is provided with a conventional hand-held hair dryer secured within the cabinet and positioned so that the output of the hair dryer is projected through a vent opening in the cabinet. The hair dryer is controlled by a push-button time switch and the push button of the switch is operable from the outside of the cabinet. A suitable vaporizing substance is disposed within the cabinet adjacent to the inlet of the hair dryer so that the fumes are expelled through the vent together with the heated air. Additional electrical circuitry can be provided to override the time switch and to provide power outlets for washroom accessories such as electric shavers or lighting.

Abstract: A steam heated dryer drum having one or more spoiler bars secured against its inner shell wall to extend longitudinally and substantially parallel with the axis of rotation. The spoiler bars generate turbulence in the condensate to lower the resistance to heat transfer through the shell wall. No screws, bolts, rivets or the like, which would necessitate penetration of the shell wall, are required or used to secure the bars. In one embodiment, the bars themselves have a bridge-shaped cross sectional configuration and are made of a magnetic material. Their bridge legs form the north and south poles of the magnetic bar and have their ends contoured to correspond to the drum shell radius of curvature.In another embodiment, magnets having a bridge-shaped cross section are used.

Abstract: A heat treating apparatus particularly useful for the drying/heat-setting and cooling of synthetic tow comprises first and second elongated housings with separate conveyors longitudinally positioned in said housings, the housings being at different temperatures. Means are provided to deposit a continuous length of tow on the conveyor of the first housing in an undulating pattern to define a substantially straight bed of tow having substantially uniform maximum thickness and width dimensions. A transfer device is provided between the first and second housings including a flat plate adapted to pick up the tow from the conveyor of the first housing, and integral therewith, an enclosed chute adapted to deposit the tow on the conveyor of the second housing, the chute having height and width dimensions substantially the same as the maximum thickness and width dimensions of the bed of tow. The transfer chute is adapted to air seal the first housing from the second housing.

Abstract: A dishwashing apparatus has an air inlet conduit located in the bottom wall of the washing chamber. A forced air circulation apparatus is attached to a support bracket on the air inlet conduit from the outside of the washing chamber through a partial turn rotary motion. The air circulation apparatus is locked in this attached position by tightening a threaded fastener from within the washing chamber.

Abstract: An anatomical model for teaching, practicing and learning the repair of an episiotomy. The model comprises a fabric cover shaped as part of a female torso and limbs and stuffing material of cotton or the like, filling out the cover. There are provided a plurality of slit fabric layers of the vagina region of the model, as well as a slit in the cover to simulate the incisions of the vaginal mucosa, muscle, fascia and the subcuticular portion of the vagina.

Abstract: A shape matching device includes a frame for rotatably supporting a generally conical container having a plurality of input apertures in a circumferential mantle. Each input aperture is shaped and dimensioned to allow insertion into the container of only one of a plurality of associated blocks. The tapered end of the container is truncated to provide an exit aperture dimensioned for unobstructed ejection of the associated blocks from the container. Along the interior surface of the mantle, a pair of curved longitudinal ribs is provided to support the blocks when the container is rotated in a counterclockwise direction and provide a gravitational slide for the blocks toward the exit aperture.

Abstract: A system for simulating weapon firing comprising a pulse transmitter connected with a weapon for transmitting beam pulses and a target device having a hit display. The pulse transmitter comprises a calibrated adjustment device for the beam pulses in order to adjust the hit diameter at the target image plane of the target device to the caliber of the weapon.

Abstract: A toy cash register device which closely simulates the operation of an actual real life cash register having a plurality of program plates depicting thereon various items of merchandise and monetary values therefore with each plate having a total value for each grouping of items thereon. The device is entirely actuated and operated by tensioned springs and no other source of power is required for actuating thereof. An OPEN button releases a cash drawer for positive opening under other spring mechanism. Coordinated with a program plate inserted into the device are latching pawls associated with respective monetary keys. Each program plate is provided with precoded channels along respective edges thereof which in cooperation with the latching pawls require operation of correct keys before a "ring up" occurs and simultaneously therewith a ding of an internal bell occurs.

Abstract: The construction being of two 10" diameter circles of plastic approx. 1/32" thick, fastened to the center with a grommet in such a way as to permit the upper disc of clear vinyl to rotate over the lower disc of colored polystyrene. Construction further consist of two sets of ten each high tack vinyl tabs to be placed on and to adhere to the upper disc and can be used over and over.

Abstract: System for measuring the relative position and/or velocity of two objects with respect to each other and/or with respect to a common reference system, such as the ground, according to the magnitude and direction thereof, using electro-optical measuring means, the improvement comprising:(1) producing images of the object to be measured in at least two different spatial positions;(2) producing A.C. electrical signals of different frequency proportional to the relative movements of these images to at least one optical correlation system; and(3) evaluating these signals, with the use of the trigonometrical relationships of the perspective imaging, in a computer to determine the measured values.

Abstract: In a self-propelled, remotely controlled vehicle adapted to operate on the sea bottom for extracting ores therefrom, a V-shaped tubular structure has at its apexes a system of crawlers for moving the structure on the sea bottom. Underneath each side of the V-shaped structure, a scraping system is operative and its long axis is perpendicular to the corresponding side of the V-shaped structure. Tubular conveying systems for elevating the ore to the surface are provided. The V-shaped structure is collapsible by means of hydraulic actuators.

Abstract: An excavator digs trenches by partial buckets on a vertical chain which is adjustable as to contact with the ground by two hydraulic cylinders. The excavator is built upon a frame having wheels, with the back wheels being driven by a hydraulic motor so that the vehicle creeps forward at a very slow speed. Excavated dirt is contained by the partial buckets in conjunction with a plate behind the buckets. The dirt is then transferred by means of troughs on the buckets to a belt which conveys it away from the trench.

Abstract: In a lightweight steam iron with a soleplate and means to selectively deliver water for steam distribution and having a first plastic plate above the soleplate coextensive therewith and a skirt portion around the plastic plate with a second plastic housing having a handle and sealingly supported by the plate whereby the skirt and housing form internal water tank walls and also enclose other iron operating components. A water gauge is supplied for the iron and an improvement on the gauge in this combination includes an entirely integral elongated rectangular niche or cut-out with back, bottom and sides, so the niche forms one of the housing edges parallel to the handle. The niche has spaced apertures in its back side facing outwardly of the iron and connecting with the interior of the tank top.

Abstract: An electrically operated copyholder is disclosed wherein a line guide extending transversely of copy matter supported on a face plate is removably mounted on an endless driving element, such as a belt, which is driven by a motor controlled by a typist, thereby to move the line guide automatically across the material to be copied line by line.

Abstract: A support for use in conjunction with self-coiling indicia-carrying sheets in a movable indicia display utilizes two identical backing members, and two identical end members, a total of only four parts. Sheet metal is used, and roll retainers are integrally formed on the backing members, as are intermediate edge guides for the indicia-carrying sheets. The end members serve as edge guides, and also provide support for the ends of the roll retainers. The entire assembly is fastener-free, cooperating tabs and slots being used to secure the parts together. In a modified version, each end member is permanently secured to one of the backing members so that the support comprises only two separable parts, which are identical to each other. In another modification, adapted to be viewed from only one side, only one backing member is used.

Abstract: A booklike article such as a menu, opera score, sports program, theatre program comprises a first relatively transparent layer having impressed thereon indicia representative of graphic data associated with the typical article. Underlying the transparent layer is an electroluminescent panel which upon application of a suitable operating potential, will emit radiation in the light spectrum, thus enabling the grahic data to be viewed in dark environments. A source of potential is located in the spine of the book. The source is battery operated and supplies an output for energizing the panel.

Abstract: An adjustable means interconnecting the muzzle ends of barrels in an over-and-under firearm to adjust the distance between the muzzle ends of the barrels to alter the point of impact of projectile means discharged from the barrels. The adjustable means includes an elongated yoke affixed to the upper barrel extending downwardly with a slot for receiving the lower barrel. A screw means is provided for adjusting the position of the lower barrel within the vertical slot of the yoke.

Abstract: The utility signal device is adapted for use adjacent a body of water to resiliently support an end portion of a fishing rod thereon. The signal device comprises a housing having opposite ends and a chamber formed therein with a battery positioned in the chamber. A buzzer is mounted in the chamber and is electrically connected to the battery. A fishing rod holder is movably mounted in one end of the housing and is adapted to support an end portion of the fishing rod thereon. The fishing rod holder has a buzzer activator secured thereto which extends into the housing and which is movable into position to complete a circuit with the battery and the buzzer in response to a force on the end portion of the fishing rod. A pair of lights are provided on the housing on opposite sides of the fishing rod holder whereby the light housings provide a lateral restraint for the fishing rod.

Abstract: The reel attaches to the base end of a hollow fishing pole which may be a one-piece pole or multiple-section telescoping pole by means of a tapered thread compression nut. The reel comprises a hollow tubular housing for receiving a spool for the fishing line. The spool is advanced into the housing by means of a lead screw secured at one end to the spool and threadedly engaged at its other end with the base of the housing. A handle is preferably attached at a remote end of the spool so that as the spool is rotated by the handle, the spool advances by means of the lead screw into the housing. The fishing line extends through the hollow pole, (or through guides on a solid pole), through a passage in the housing, through a guide notch of the housing and about the spool. As the spool moves into the housing the line is wound thereabout, always remaining inside the housing. A pivotal locking lever locks the spool in fixed position relative to the housing in a number of different longitudinal positions.