Abstract: Tobacco ribs which are separated from laminae are contacted by steam at a temperature of approximately 150 degrees whereby the steam condenses on the surfaces of ribs and the thus released heat promotes the penetration of condensate into as well as gradual evaporation of initial moisture and condensate in the interior of ribs to thereby increase the specific volume of the ribs. The ribs are agitated during contact with and are caused to float in steam. Warm water is sprayed onto the ribs during contact with steam. The contact with steam prior to start of expansion takes up approximately one minute, and the ribs remain in contact with steam for another minute to effect expansion by evaporated moisture. The thus treated ribs are immediately rolled, severed and dried. The volume of ribs can be increased still further by contacting the severed ribs, prior to drying, with steam and water to bring about additional evaporation of moisture in the interior of severed ribs.

Abstract: A batch of raisins in which moldy raisins are mixed with sound ones is immersed in a hot water bath, causing the moldy raisins to assume a mushy and sticky texture while leaving the texture of the sound raisins substantially unaffected. The batch of raisins is then dropped onto a laterally inclined conveyor belt. The conveyor belt moves the raisins over a framework which is rapidly moved up and down to slap the underside of the belt, causing the raisins to bounce up and down on the continuously moving conveyor. The sound raisins, which have retained their firm texture, are bounced substantially higher than the moldy raisins, and thus, bounce down off the side of the conveyor as they move along the length of the conveyor. Because of their mushy texture, the moldy raisins do not bounce as high as the sound ones and therefore do not as readily bounce downward off the conveyor. Instead, they are carried along and off the end of the conveyor.

Abstract: A mobile, low-profile feeder-crusher machine for receiving, crushing and feeding freshly mined coal to a stationary conveyor system includes a rigid frame supporting a rotary crusher shaft and supporting an endless conveyor for delivering coal to the crusher shaft and for removing crushed coal therefrom. The drive system for the crusher shaft is mounted on the frame and includes a hydraulic pump driven by an electric motor, a hydraulic motor driven by the pump, a planetary gear reduction driven by the hydraulic motor and having a carrier output driving the crusher shaft, and a flywheel rotatable with the input of the reduction gear assembly.

Abstract: Method and apparatus for preparing a chip-type snack is disclosed. A dough is prepared and sheeted. An elongated shaped ribbon of connected dough pieces is cut from the dough sheet. The ribbon is passed through a deep fat fryer and then severed into individual chips.

Abstract: Disclosed subject matter includes flexible motor mounting members particularly adapted for vibration induced flexing movement combined with oscillatory movement about a pivot axis at a point of attachment on a blower housing or other support. Short but strong mounting members are provided that have low torsional mode vibration transmissibilities. Leaf spring mounting arms have low torsional spring constants and yet have sufficient strength to withstand shipping and handling loads for motor .Iadd.blower .Iaddend.assemblies and to permit all angle motor mounting. The mounting member spring constants for axial, radial and tilting vibration modes are selected in specific forms so that the characteristic vibration transmissibility ratios for these modes are each close to unity. However, the characteristic torsional mode vibration transmissibility is substantially less than unity.

Abstract: A snap on shield for a helmet is formed with a transparent surface of a predetermined shape to fit onto a helmet to protect the face of a wearer. The shield is injection molded of a polymer material having a molded female center snap portion for engaging a male snap portion on a helmet and a female polymer snap portion formed on each side of the shield. Each snap portion is an elongated snap portion that allows the male snap portion to be snapped in at any position along the elongated female snap portions. The helmet shield can be fitted to different helmets having male fastener portions in different positions. Each elongated polymer snap fastener portion has an elongated groove formed in the shield and has an elongated lip formed along each elongated edge of each groove and protruding over a portion of the groove.

Abstract: A bib having a body member which obviates refastenable application of a tape-tab fastener directly to the front surface of the body member. The bib is provided with a duplex refastenable tape-tab fastener open by non-releasably securing a separability member on each side of a cut which extends from a neck-accommodating aperture in the body member to an adjacent outer edge of the bib; and by bridging the cut with an adhesive-faced tape-tab fastener by securing each of its oppositely disposed end portions to a separability member. The tape-tab fastener is said to be duplex by virtue of the construction enabling either end of the tape-tab to be peeled from its respective separability member: that is, both ends of the tape-tab fastener are refastenable.

Abstract: A cold-weather muff includes an elongated generally cylindrically shaped insulative member having open ends, a water resistant and wind-proof lining surrounding the insulative member, and an inner liner disposed within the insulative member having longitudinally opposed left and right hand receiving pockets and a chemical heating element receiving chamber intermediate the left and right hand receiving pockets. Resilient collars are provided on the open ends that are individually cooperative with respective ones of the left and right hand receiving pockets to minimize convective heat loss by preventing wind from passing through the muff. An emblem may be fastened to the outer lining displaying any desired indicia. A flap on the outer lining provides a resealable closure for the chemical heating element receiving chamber. The cold-weather muff is particularly advantageous for spectator sports, and may readily be incorporated in any suitable body garment such as a hooded sweatshirt.

Abstract: A neck garment to be worn with an outer garment, such as a coat or sweater. The garment is provided with a portion for tucking beneath the shoulder portions of an outer garment and with a portion which can be worn in a rolled fashion, covering just the neck, or which can be unrolled to cover not only the neck but portions of the face as well. End-to-end fastening means are provided which permit putting the garment on, or taking it off, without pulling the garment over the head.

Abstract: The composite chest piece interlining material is formed of first and second outside layers of fabric with a sheet of foam material sandwiched therebetween. Discontinuous adhesive coating is applied to the inner surfaces of the outside layers of fabric and adhesively connects the same to the opposite surfaces of the middle layer of foam material. The foam material provides bulk and resiliency to the interlining material while the first and second outside layers of fabric provide smooth and nonabrasive surfaces to the interlining material and also restrict the normal tendency of the foam material to stretch and tear.

Abstract: A nighttime garment to be worn by a person for concealing an ostomy pouch used by the person, the garment including a decorative wrap-around skirt-like member having an inner pocket for receiving the ostomy pouch for concealment behind the skirt-like member, and a securing arrangement enabling adjustment of the skirt-like member for waist size and for location of the ostomy pouch.

Abstract: A strap for use with a pair of diving goggles includes a pair of rings provided at a slope across one half of the strap and incorporated therewith. The rings receive an aspiration pipe with the effect that the aspiration pipe is secured to stand at right angles with respect to the water level when the diver watches beneath him.

Abstract: A titanium or titanium alloy pin for cement-free fixing in a long bone for a joint prosthesis or for bone repair is surrounded by a lattice of titanium wire with a mesh size of at least 0.3 mm. The central part of the pin and the lattice are coated with a coating of titanium oxide which protects them against long-term corrosion. The lattice is further coated with a biodegradable and biocompatible material having a low modulus of elasticity.

Abstract: A posterior chamber intraocular lens having at least two projections on the rear surface thereof for causing a line of tension in the posterior capsule. If desired, after implantation of the lens the posterior capsule may be perforated with a laser beam transversely to the line of tension, causing the posterior capsule to tear and form an opening to eliminate any cloudiness of the posterior capsule from behind the central region of the lens.

Abstract: An improved inflatable cushion lift assembly for use in a bathtub by a person taking a bath. The lift assembly is positioned on the floor of a bathtub and is connected to the bathtub faucet to inflate the cushion. The cushion may be deflated while a person is sitting thereon to lower a person to the floor of the tub. Furthermore, the cushion may be inflated while the person is sitting on the cushion on the floor of the tub to raise the user upwardly to allow the user to exit the tub easily. The present improvement inhibits undesired movement of the cushion while being used by utilizing a rigid bottom panel and/or rigid top panel. Furthermore, the interior of the cushion may be provided with baffles or the like for dampening water oscillations within the cushion. The cushion, for reasons of stability, may also be tiered or formed in layers such that the cushion inflates or deflates in stages.

Abstract: A vehicle washing apparatus is disclosed which systematically regulates the cleaning operation to produce optimum results. The apparatus comprises a frame member having an opening to receive the vehicle with means provided to move one of said frame member and vehicle relative to each other. A horizontal cleaning brush is rotatably disposed within the frame member. A brush control system is provided for regulating the positioning of the brush relative to the vehicle during the cleaning cycle.

Abstract: A multistate precipitation removal tool designed to remove light ice, snow, slush and liquid water from delicate surfaces and to polish frost thereon without harming such surfaces. Materials of appropriate hardness and flexibility over a broad range of temperature have been located and incorporated into a scraping/polishing/squeegeeing tool for use, for example, in the small aircraft industry for preparing aircraft for take-off after precipitation has occurred. Critical in the function of the tool is that it does not damage delicate airfoil or windscreen surfaces while being used for its intended purpose.

Abstract: A paint brush which has an elongated handle defining a sheath for holding a brushing means, an enlarged portion attached to the sheath, a neck portion, and a hand gripping portion connected to said neck portion. A pistol-grip handle is connected to the neck portion and extends outwardly from the brushing means at an angle of approximately means at an angle of approximately 60.degree. with respect to the central axis.

Abstract: A plate-like structure features a pair of relatively opposing, equilateral, predominantly smooth faces, each of which is bordered completely by its own set of rigid working edges. A hand guard is also provided to removably receive any of the side surfaces extending between the opposing faces and the working edges adjacent to the selected side surface.

Abstract: Adjustable telescoping drapery traverse rods are provided with positive drive means for master carriers comprising an essentially non-stretchable perforated drive tape and toothed drive-sprocket. Apparatus is also provided for adjusting the points of connection between the master carriers and the tape from the outside of the rod after the length of the rod has been adjusted to fit a given window (or the like) opening.

Abstract: A hinge latch (10) is comprised of a first hinge latch plate (20) having a pair of pintle recesses (34) separated by a hinge boss (36) including hinge bores (42) disposed toward the pintle recesses; a second hinge latch plate (22) having a pair of pintle guides (56) of complementary geometric configuration with respect to the pintle recesses, these pintle guides bounded by a pintle guide recess (60) for receiving the hinge boss when the pintle guides are disposed within the pintle recesses; a first (66) and a second (68) pintle member, each comprised of a hinge pin member (70) received within a respective one of the pintle guides in a slot (58) formed therein and having a free distal end for projection within a respective one of the hinge bores for pivotal hinging movement of the first and second latch plates about a transverse axis, and a hinge pin plate (72) secured to the hinge pin having a lateral leg (74) terminating at its distal end in a diagonally disposed abutment edge (76); a biasing member (86) for

Abstract: Structure for mounting a door to a cabinet for selective opening of the door from either side of an access opening provided in the cabinet. The door mounting structure includes hub portions which are removably associated with the hinge pins mounted on the cabinet. Positive locking structure is provided for positively maintaining the hub structures associated with the hinge pins about which the door is swung to prevent complete separation of the door from the cabinet. The positive locking structure includes a rigid element which is urged into interfering relationship with the hub structure associated with the cabinet hinge pin about which the door is being swung to prevent repositioning of that hub structure from a closed pin-engaging disposition to an open disposition wherein the pin is released. Overcenter detent structure is provided for maintaining the separable portions of the hub structure selectively in the opened and closed positions.

Abstract: A hinge mechanism for a door which includes a support within the door opening and away from the door jamb. In the closed position of the door, parts of the mechanism including a hinge member are located between the support and the jamb. A door is pivotally mounted on the hinge member at its distal end. As the door moves from the closed to an intermediate position the pivotal mounting of the door on the hinge member follows an arcuate path outwardly and away from the door jamb. When the mechanism reaches the intermediate position the door can be swung on its pivotal connection with the hinge member to a fully open position.

Abstract: A boning apparatus and method is disclosed for removing the meat of an animal or poultry part from an elongate bone over the knuckled joint end. The apparatus includes meat stripping blades with a variable size opening therein for encircling the elongate portion of the bone, and bone holding blades for holding one end of the bone and pulling the bone through the blade opening to strip the meat from the elongate portion of the bone. A sensor detects the proximity of the stripping blade to the knuckle joint end and causes the size of the blade opening to increase by an amount which just allows the knuckle joint to pass therethrough. The meat is thereby cleanly and completely removed from the knuckle joint end of the bone.

Abstract: An apparatus for electrically stimulating an animal carcass including means applying a series of electrical impulses to the animal carcass having a potential between about 30 and 60 volts and relaxing the muscles of the carcass for a period by interrupting the electrical impulses. The apparatus has a nose clamp and an insert plug. An electrical impulse generator generates low voltage electrical impulses to the nose clamp and insert plug. A step-down transformer reduces the voltage. An interval cycle timer controls the time duration of the stimulation cycle. A repeat cycle pulsation timer automatically controls the on-off of the electric current to the carcass.

Abstract: A method of depositing sliver in a can by a sliver coiler having a rotating coiler head provided with an outlet opening travelling in a circular path, comprises the following steps: discharging sliver from the outlet opening during rotation of the coiler head; introducing sliver from the outlet opening immediately into a stationary annular chamber which can hold at least two superposed sliver coils and which is aligned with the circular path and which further has an open top oriented towards the outlet opening and an open bottom oriented away from the outlet opening; compressing the sliver in the annular chamber upon introduction therein and ejecting a lowermost sliver coil from the annular chamber through the bottom thereof by the pressure of a superposed compressed sliver coil dwelling in the annular chamber.

Abstract: A button for receiving and holding a fabric covering which includes a base element having a main body with a convex-shaped exterior surface, a flat underside and a tapered central opening and a cap member to be outwardly covered by a fabric piece and having a concave interior surface for receiving the main body and engaging therebetween the edge of the exterior fabric covering, a central tapered projection for insertion in the tapered opening, and an annular lip for extending along the underside to retain the base element in the cap member. The tapered projection is larger than the tapered opening and the main body is scored along a radial line extending outwardly from the opening for radial expansion, thereby facilitating radial expansion of the main body as the projection is inserted into the opening to greater depths to engage the fabric edge. Thus, the button adapts readily to fabric coverings of varying thicknesses by varying the amount of radial expansion of the main body.

Abstract: In order to ensure a firm bond between a row of coupling elements of a slide-fastener half and a stringer tape provided at a longitudinal edge with a carrier cord around which these elements are molded, the cord is compressed during the molding operation between jaws of two mold halves imparting to the engaged cord portion a generally triangular cross-section with rounded corners, the base of the triangle adjoining the stringer tape to define a pair of transverse shoulders embraced with positive fit by complementary tail sections of the coupling elements.

Abstract: A method and apparatus for forming a base fabric composed solely of warp yarns to be used in making a papermaker's felt. A plurality of yarns are drawn from a supply and wound around a pair of parallel drive rolls in a helical pattern by a travelling winding member. Two sets of parallel guide tines project from each end of the winding member. The corresponding ends of a plurality of loops are attached to the trailing ends of the first set of tines and pass around the rolls and the opposite ends of the loops are attached to the leading ends of the second set of tines. The yarns to be wound are attached to the trailing ends of the second set of tines. As the rolls rotate, the winding member travels in an endless path around the rolls to draw the yarns from the supply and wind the yarns in a helical pattern. A comb is located parallel to the rolls and the tines pass through the teeth of the comb to maintain proper spacing and order of the yarns as they are wound.

Abstract: The improved dwell and depth attachment includes an elongate housing that is attached to a drill motor and has an output shaft that is movable longitudinally and rotatably in the housing for rotating a drill bit. A drive spindle is connected with the output shaft and extends through the housing. An elongated sleeve encircles the spindle and has an end that is engageable with the work piece. An adjustable depth control located within the housing is connected for movement with the spindle. A first portion of the control includes a threaded interior and has ten circumferentially spaced, radially extending holes therein. The control also includes a second portion that has a threaded exterior mating with the first portion and has ten slots equally spaced about the exterior. The threads are selected to be loose fitting so that the portions of the control can "float" relative to each other.

Abstract: An apparatus for manufacturing electrical harnesses, wherein a required number of wires are fed in an equally spaced state to a cutting and wire-to-connector assemblying section at which the wires are cut and separated into two wire groups. At the wire-to connector assemblying section the connectors are affixed to each of the abutting terminals of the wire groups in a single punch and die action. An advancing wire group, which has a connector at the other terminal affixed in a previous process, is released as a finished harness from the apparatus.

Abstract: A roller formed by a spindle and a tubular jacket has elastic sleeves for attachment of the jacket on the spindle. Each elastic sleeve consists either of a clamp-on sleeve fitted on the spindle, a clamp-in sleeve applied concentrically therewith in the jacket, and a rubber ring arranged between the clamping sleeves, or of a sleeve of undulated cross-section whose wave crests directed radially outward bear against the inner wall of the jacket while its wave crests directed radially inward bear against the spindle. Lastly the elastic sleeve may consist of a rim or ring of clamping pins angularly spaced apart which are arranged and fixed at regular intervals distributed over the annular space between jacket and spindle.

Abstract: Ceramic inserts are embedded in thermally highly loaded zones and/or as a heat insulation in light metal castings for use in internal combustion engines.To provide a firm joint between the insert and the light metal, a metallic material which resists creep and/or relaxation is shrunk on the insert before it is embedded.

Abstract: The present invention teaches, without limitations, a method for replacing the worn out spindle of a rotary tablet press. This disclosure shows how the original rotary tablet press is reworked to remove the worn spindle. The method disclosed in this application enables the replacement spindle to allow the rotary tablet press to function in accordance with its original specifications. Rebuilding the rotary tablet press results in substantial savings when compared to purchasing a new tablet press.

Abstract: A method and apparatus for attaching sliders and bottom stops to a slide fastener chain having longitudinally spaced gaps free of fastener elements, in which the chain is conveyed forwardly until a gap is detected. The chain is stopped and the gap area widened. A rotor movable beneath the chain is adapted to carry a slider and is also formed with a die plate portion. The rotor rotates to deliver the slider to the gap, thread the slider onto the fastener elements of the chain, and place the die plate beneath the gap across from bottom stop punch and chain cutter means which then fix a bottom stop to the chain and separate adjacent fastener element ends.

Abstract: A mortiser device and method for applying a mortise or offset in the edge of a hollow metal door where a dead bolt or other latch is to be installed. The method and device comprises a die block adapted to be positioned inside of the door edge at a point adjacent where a mortise is to be formed in the door edge, a cavity in the die block, a mortising block operatively connected to the die block by a pressure application device, whereby the mortising block is disposed on the outer side of the door edge adjacent the die block and a portion of the door edge extends between the die block and the mortising block. The pressure application device extends between the die block and the mortising block through the aperture in the door edge, and the pressure application device is adapted to press the mortising block and the portion of the door edge extending between the die block and the mortising block into the cavity in the die block to form an offset in the door edge.

Abstract: Method of manufacturing this panel by pouring concrete in a mold where a reinforcement has been introduced. According to the method there are first of all provided rectangular molds in which at least two of the opposite sides are flared. Concrete is thereafter poured into one of the molds while introducing the reinforcement and this operation is continued until the mold is completely filled. On the other hand, there are provided steel trusses having seating pads at both ends thereof, each truss being formed of a base and a head connected together by a system of metallic rods mounted in zigzag. Then, the two trusses are spacedly mounted parallel to one another as well as with the two flared sides of the mold, above the surface of the concrete which has been freshly poured in the mold and the head of the truss is caused to penetrate therein by means of a U-shaped winch mechanism until the seating pads of the trusses come flush with the surface of the concrete.

Abstract: A tool is provided for positioning an "O" ring in a seating groove cut into the face of a section of flanged pipe. The tool includes a set of two adjustable tongs to grasp the "O" ring. The tongs are held in a fixed position by a pair of parallel facing plates. Bolts running through the parallel facing plates also run through a verticle plate of a support member which secures the tool to the flange.

Abstract: A tool is provided for seating "O" rings in flanged pipe. An "O" ring positioning plate is held between two parallel facing plates. A flexible "O" ring support band is mounted in the tool and holds the "O" ring tightly against an arcuate cut in the lower surface of the "O" ring positioning plate. A support member is included to support the tool on the pipe's flange.

Abstract: A process for the production of a fine amorphous metallic wire is described, comprising melt-spinning an iron family element base alloy having an amorphous substance-forming ability to obtain a fine amorphous metallic wire, and passing the thus-formed fine amorphous metallic wire through a die so as to draw within an area reduction percentage range of from about 5 to about 90%. The thus-produced fine amorphous metallic wire of the iron family element base system is excellent in heat resistance, corrosion resistance, electromagnetic characteristics, and has excellent mechanical properties, such as breaking strength and a degree of drawing at break. Thus, it is very useful for various industrial materials such as electric and electronic parts, composite materials, and fibrous materials.

Abstract: An improvement in devices for placing prewound coils and insulating wedges into slots of dynamoelectric machine stator cores, for example in manufacturing electric motors, is disclosed with the device having a wedge making apparatus including a drive, an arrangement for cutting insulating wedges from a strip of insulating material, and an arrangement for forming the wedges into a magazine for subsequent insertion into stator core slots.

Abstract: A nonvolatile semiconductor memory device is provided having a MOS transistor and a floating gate type MOS transistor. The length of an overlap between a floating gate and a drain region of the floating gate type MOS transistor is made smaller than that of an overlap between the gate and the drain region of the MOS transistor.

Abstract: A JFET having the top gate isolated from the bottom gate by an annulus source region and thin channel region and a top gate ohmic contact region isolated from the bottom gate by a deep isolation region. The isolation region and the top gate contact region are exterior the active channel region.

Abstract: Disclosed herein is an apparatus for producing a slide fastener having a separable end stop through the steps of attaching a pin, box pin, a slider and a box to a pair of stringers while the stringers are being fed in a parallel state by grippers, in which the stringers have a space portion devoid of fastener elements and upper stoppers affixed adjacent to the space portion. A slider attaching unit of this apparatus has a transfer holder for carrying the slider into the path of travel of the stringers from a slider supply device and a retaining device for retaining the slider between itself and the holder.

Abstract: A plastic sheath for protecting the blades of a pair of scissors being stored or carried comprises two elongated plastic members permanently secured together along a mating seam as by sonic weld to provide a pair of spaced apart side walls and a pair of edge walls which cooperate to define an elongated blade-receiving passage open at one end and extending along the longitudinal axis of the sheath. A blade-sharpening slot extends inwardly from one edge of the sheath transversely to the sheath axis and includes outer and inner interconnected offset slot portions. An elongated abrasive blade sharpening element is stationarily mounted inside the blade passage of the sheath and extends generally longitudinally of the sheath and intersects the blade sharpening slot between offset adjacent ends of the blade sharpening slot portions.

Abstract: A plasterboard trimming tool includes a main support element that consists of two parallel arms interconnected by a web and having lateral guiding surfaces which face one another and confine the marginal portion of the plasterboard between themselves in operation. A transverse guiding surface is provided on the web itself and/or an auxiliary support element which is selectively mountable on the web. A pair of cutting blades is mounted in respective holders at the same distance from the transverse guiding surface, the cutting blades having respective cutting edges which partially penetrate into the plasterboard to form continuous straight scoring cuts therein across the plasterboard from one another. The position of the auxiliary support element on the web can be reversed. The auxiliary support element has elongated sections of different thicknesses extending along the web, so that the distance of the scoring cuts from the edge face can be changed by reversing the position of the auxiliary support element.

Abstract: A concavely ground knife blade has a pair of side faces characterized by oppositely-directed, continuous, slightly concave surfaces. Such surfaces have an arcuate profile approximately fitting a large (e.g., 30 inch) radius circle and follow essentially straight line axes which gradually bend toward one another to form a point. The side faces are first ground widthwise along a diameter of a grinding wheel having an end face beveled at a shallow angle to form a frustoconical grinding surface. The side faces are then polished lengthwise. The resultant blade has a median thickness in its midportion which is nearer the back of the blade than the cutting edge.

Abstract: Hole punch apparatus comprises a worm and worm wheel whereby an ordinary electric drill can be employed to punch holes in sheet metal by means of a punch and die. The several disclosed structures variously comprise a shear pin for preventing overload, a handle for rapid engagement of the punch and die with the workpiece, bushings to protect against unusual torques, and special threads.

Abstract: An apparatus for measuring the angular displacement of two objects relative to each other. The apparatus includes a graduated plate which is attached to a rotatable shaft which is rigidly secured to a first object to be measured. The annular displacement of the graduated plate is measured by a scanning unit. The scanning unit and graduated plate are enclosed within a housing which is rigidly secured to a second object. The scanning unit is supported upon the rotatable shaft and secured by a coupling system to the housing so that it will not rotate with the shaft. The coupling system allows translational movements of the scanning unit with respect to the housing in planes perpendicular to the axis of the shaft without impairing the measurement accuracy of the scanning unit.

Abstract: A digital indication type micrometer head with a spindle moved axially by the rotation of a thimble through a screw feed mechanism to a detector for detecting axial motion of the spindle, a unit for processing signals from the detector and calculating a digital indication value, and a digital indicator secured to a casing surface to indicate calculated value. The digital indicator points upward and is rotatable along the casing surface and can take a normal position at the side of the forward end of the spindle and a position or positions rotated through substantially 90.degree. or 180.degree. from the normal position.