Abstract: A prone board is provided with an adjustable angle leg supporting and spreading appliance positioned to extend from a location below the crotch and between the thighs of a patient to a location below the patient's knees. The appliance is adjustable and cooperates with lateral foot supports for adaptation to progress in treatment of hip or knee extension and/or flexion. A trunk support has lateral pads adjustable relative to the plane of symmetry lengthwise of the prone board for treatment of scoliosis. A face support relieves prolonged stress on the patient's neck or compensate for dysfunctional head support. The structure supporting the trunk supporting end of the appliance includes a pair of legs diverging at an acute angle. Alternatively, an attachment including a leg inclined forwardly and a telescoping brace which permits adjustment of the angle of inclination of the prone board relative to the floor. A seat back appliance converts the prone board to a chair utilizing the flexion control appliance.

Abstract: A core thread is combined with staple fiber in a spinning rotor by feeding the core thread to form a loop in the fiber collection surface while feeding and withdrawing the core thread in a manner to maintain it substantially linear, and the stable fiber is spun into an outer yarn shroud twisted about the axis of the core thread. The core thread feed tube is located at one side of and spaced from a diametral plane through the fiber collection surface, and the fiber feed tube is located at the opposite side of and spaced from such plane through the fiber collection surface. A loop is formed in the core thread by delaying startup of drawoff rollers for a predetermined interval after startup of core thread supply rollers, and the loop is laid on the circumference of the fiber collection surface by rotation of the spinning rotor.

Abstract: The peripheral fittings for resolving sliver are carried by an annular sleeve. Such sleeve is removably mounted concentrically of the resolving roller shaft by a centering roller body carried by the shaft. A resilient member is radially spread by a clamping ring to frictionally interconnect the roller body and the fittings sleeve for maintaining the sleeve in desired axial relationship and for transmitting force from the shaft and roller body to the peripheral fittings to effect conjoint rotation.

Abstract: Mechanism for supplying sliver to a resolving roller is adaptable to slivers having different average staple fiber lengths by selectively engaging a plurality of clamping members to provide a selectable nip line between a sliver supply roller and its cooperating member at different distances from the resolving roller corresponding to the sliver average staple length. Either the selected clamping member or the counter member is the supply roller. Selection of the desired nip line may be made by moving one or more clamping members and the counter member relatively, by selection of one of a plurality of feed nozzles, or by selective positioning of a movable feed nozzle. The nip line selection may be effected at individual spinning stations or simultaneously for a plurality of spinning stations.

Abstract: In a children's peg top including a top body having a tip whereon it can spin, an axial recess is provided in the end of the top body remote from the tip. A magnetic element carried in such recess cooperates with a magnetic element on a spinner body so that the spinner body is separably held magnetically in the top body recess. One end of each of two cord lengths is connected to the spinner body. Such cord lengths can be twisted together and then caused to untwist by drawing their free ends apart thereby rotating the spinner and top bodies.

Abstract: A pressure member cooperates with a supply roller to feed sliver to a sliver resolving roller enclosed by a housing. The pressure member has a sliding surface shaped complementally with and overlapping a sliding surface on the resolving roller housing surrounding the sliver infeed opening in the housing. The sliding surfaces cooperate to seal the resolving roller housing against gaps and maintain a smooth-walled roller chamber in any adjusted position of the pressure member.The interior wall of the housing chamber enclosing the resolving roller may have a thin liner bonded to it. The liner is of material capable of being formed to fit a non-cylindrical wall and of providing a precisely smooth wear-resistant surface. The liner has sliver infeed, fiber discharge and, optionally, dirt discharge openings through it aligned with corresponding openings in the housing wall; but the liner openings are smaller than the housing openings and, therefore, extend beyond and shield the edges of the housing openings.

Abstract: This invention relates to safety bindings for skis of the kind having a front binding which consists of two spaced toe-clamps which grip the toe of the boot and which are mounted on outwardly pivotable arms.According to the invention, when these arms are locked in the closed position, they are capable of release in opposition to the pressure of a spring. The force of such spring acts in the direction opposite to the direction of ski movement. In response to a sudden rearward force on the ski, the two toe-clamps can be moved apart simultaneously laterally of the ski a distance greater than the width of the boot.

Abstract: Transmission of the thread twist-forming force to the thread end is facilitated by a finger mounted eccentrically in the bore of the thread drawoff tube. The thread, which is rotated about the circumference of the bore, periodically engages the finger, which finger plucks the thread away from the tube wall and momentarily relieves the bearing force between the thread and the drawoff tube at the tube infeed end. The finger is spaced inwardly from the tube infeed end and may be a pin projecting radially inward from the tube wall or an offset wire extending parallel to but eccentrically of the tube axis.

Abstract: In a vaginal speculum comprising two members each having a main limb, the main limbs can be inserted into a vagina whilst lying while and moved to pivot and move apart to maintain the vagina open for examination or treatment. One of the members has cheeks from which extend pins which engage slots in walls of a yoke of the other member; and each cheek has a toothed strip, a tooth on the adjacent wall of the yoke co-operating therewith to lock the speculum open. The yoke is resilient so that by deformation thereof the teeth can be caused to disengage the strips to allow closure of the speculum.FIELD OF THE INVENTIONThis invention relates to a vaginal speculum for keeping the vagina open during medical examination.Various types of vaginal mirrors or vagina specula are known which are used for medical examination of women.

Abstract: A thread-control tool has a notch for receiving a yarn stretch and holding it between the jaws of a cutter having a fixed blade and a movable blade on one arm of a bell crank. When a full spool is removed, the supply yarn stretch is seized by a thread-holding notch in the tool, the thread is severed, and the supply stretch severed end is fed to a suction port to be held and tensioned while the full spool is exchanged for an empty spool core. The thread-control tool then seizes the thread stretch adjacent to the suction port and carries the thread to one end of the empty spool. A wedging element on the tool wedges apart the spool end and its end-supporting plate to form a slot and to insert a portion of the supply stretch into the slot. As the wedge is moved out of the slot, the slot closes and the thread is clamped. The thread beyond the clamped portion is severed, and the cut off end portion is carried away through the suction port.

Abstract: One end of the housing for a spinning turbine is closed by a cover adjacent to the spinning cup mouth, which cover is connected with sliver-supply and yarn drawoff apparatus. The other housing end portion encircles a sleeve having bearings for the spinning cup shaft. Such shaft may be connected to drive means such as a belt or a commutatorless direct current motor, which drive means can be quickly disconnected. The sleeve-encircling housing portion includes quickly-releasable means for releasing the bearing sleeve for removal either alone or with attached drive means, and for replacement by a substitute bearing unit. The housing may have a longitudinal slit through a portion of its wall and cooperating lugs on each side of the slit for receiving nut and bolt means to clamp the split housing around the bearing sleeve. Alternatively, a set screw extends through the housing wall and bears on the sleeve to prevent sleeve movement.

Abstract: Free flight magnetizable selector elements are transferable from a selector element store disc to a selector element support disc for selecting particular ones of a series of textile processing implements in response to a program. The discs are disposed with an arcuate portion of one disc closely adjacent to an arcuate portion of the other disc, and the selector elements are transferred from store disc sockets to support disc sockets and vice versa by a transfer magnet. The discs include magnets with opposite polarity to maintain transferred selector elements in the sockets of the selected disc until the transfer magnet effects another transfer. The sockets of the store means and support means have the same pitch as the textile implements; however, the sockets of the entire support means may be distributed among a set of identical superjacent discs each having a socket pitch an integer multiple of the textile processing implement pitch. The store means has a corresponding set of superjacent discs.

Abstract: An anchor assembly for a flexible sheet of a roof covering, or a roof connecting strip, has a hollow section rail running along an upright wall section projecting upward from an edge of the roof, such as a parapet, at a location spaced upwardly from the roof. Such rail has a longitudinal slot bounded by upper and lower generally coplanar flanges and an upwardly projecting pocket-like extension which receives a thickened edge portion of the sheet. The sheet edge portion is thickened and forms a lip which bears against one of the flanges to anchor such edge portion.

Abstract: Fibers are carried to a spinning rotor from a fiber-resolving device by a translational fluid medium, such as air, which is first accelerated to orient the fibers. Carrier fluid next is maintained at constant speed and laminar flow to deliver the oriented fibers to a rotating laminar fluid in the region adjacent to the inner wall of the spinning rotor. The acceleration and velocity of the translational fluid is effected by a feed tube having a frustoconical infeed section, tapered toward a cylindrical outfeed section.

Abstract: In order to join two coils of wire to form a single continuous longer coil, the two coils are placed on side flaps of a table, the ends of the coils welded together and the flaps raised to push the coils together to interengage their turns to form a single continuous unitary longer coil.

Abstract: When spinning is to be started or restarted after interruption, an operator places a combination spool support and electronic pack on tracks at the spinning station, locates the pack in spool-supporting position, electrically connects the pack with a spinning station connection, draws a predetermined length of thread from the takeup spool, inserts it into the drawoff tube, and actuates a switch on the pack. The pack contains an electronic timing circuit, which sequentially effects starting of the fiber supply to the spinning chamber, and, after a predetermined time delay, effects reengagement of the thread takeup spool with its drive roller.