Abstract: A temperature control apparatus for mounting in a transportable body includes a false ceiling having a plurality of ducts defined therethrough. The ducts extend through a single compartment or between two or more compartments when such two or more compartments are defined within the transportable body. A shutter mechanism controls the flow of temperature-treated air flowing between compartments, thereby controlling the temperature in the various compartments. To provide a flow of temperature-treated air into the apparatus, the apparatus includes an air channeling structure which can be adjusted to divert different quantities of air into the apparatus. The temperature control apparatus also includes an air return bulkhead connectible to the transportable body for channeling return air from the false ceiling directly to the unit by which the air is temperature-treated.

Abstract: An apparatus for treating air having a housing with a passageway extending therethrough for interconnecting a source of the air and a space to be conditioned; two air movers mounted in the housing for creating two reduced pressure zones internally of the chamber; a pivotally positionable damper mounted in the passageway for selectively directing air received from the source along predetermined paths of travel internally of the chamber; and a counter-flow heat exchanger and cooling pad mounted in predetermined positions in the path of travel extending to the space to be conditioned to absorb heat energy and evaporatively cool the air passing to the space to be conditioned.

Abstract: A integrated system, using one power source (M) for environmental conditioning and heat exchange or transfer, utilizing simultaneously by means of its design configuration, two physical laws of rotating mechanics embodied in the rotating member of which one is centrifugal force, to provide multiple stages of refrigerant compressing (66, 68), (72c, 74c), (82c, 84c), which is the circulating medium by which heat is exchanged or transfered from a conditioned environment to a heat sink environment through the hermetrically sealed conically helical fistulous (72, 74), (82, 84) and fabricated (86), (64) environment, thus intercoursing heat from the expansion chamber to the condensing chamber, while at the same time utilizing the other law of physics to provide artifical currents of controlled air (88a, 88b), (80), (62) drawn from different environmental openings (50), (94br, 94bl), to pass independently through the outer expansion and inner condensing chambers, being divided by cylindrical baffles (76), (78) to kee

Abstract: Disclosed is a superconducting apparatus comprising a superconducting coil and a cooling apparatus for cooling this superconducting coil. The cooling apparatus is constituted by a cooling medium circulating path for subjecting a cooling medium to a vaporization/liquefication cycle, and a temperature equalizing plate for effecting a uniform cooling of the superconducting coil by the cooling medium. The cooling medium circulating path is constituted by a pair of flowing-down parts through which a liquid cooling medium flows downwards by gravity, and a pair of vaporization parts through which the liquid cooling medium flows upwards while it is being vaporized. The temperature-equalizing plate covers the peripheral surface making one entire round of the superconducting coil around the axis of the coil. It is divided into at least two parts at its lower end, which are electrically insulated from each other.

Abstract: A convertible ring, pendent comprising of an ornamental piece of jewelry, which may be configured as a ring or pendent, depending on the owner's needs. As a ring, the gemstone mounting or other ornamental centerpiece is held by a unique locking mechanism, in the plane perpendicular to the semi-split shank. Conversion between the two states is accomplished by movement about a fixed pin which is at the top of the semi-split shank.

Abstract: A procedure for the cutting, folding and sewing of skins for use in the productin of fur garments is disclosed. In particular, the skins are cut, folded and sewn together to provide a particular transverse seam on the lower portion of one skin and the upper portion of another.

Abstract: A lock assembly and a fluid or fuel line lock assembly resisting theft. The lock assembly includes a housing with a chamber an aperture for a key, and a cutaway. An inner member, preferably frusto-conically shaped, is inserted in the chamber from a direction opposite the key aperture and is secured therein, for example, by a cover member threaded into the end of the chamber opposite the key aperture. The fuel line lock uses the lock assembly and provides housing breakaway, fuel shut-off, line crimping, and air drawing features to frustrate a potential thief of the motor vehicle using the fuel line lock assembly of the present invention.

Abstract: A locking device especially useful in locking accessory compartments of motorcycles and the like. Each accessory compartment is provided with a lock mechanism including a pressure-actuated cylinder, a locking member fixed to a piston of the cylinder, and locking fittings through which the locking member projects in the locked position. Pressurized air is supplied to the cylinders to unlock the compartments from a three-way control valve located in a key-lockable compartment.

Abstract: A combination cylinder lock having coding elements constituted by the combination of outer rings having notches suitable for receiving a locking member disposed between a rotor and a stator, in combination with coding disks having drive members enabling the combination to be decoded. The outer rings and the corresponding central disks are mutually declutchable in order to enble automatic combination changing.

Abstract: An ignition key consists of two structural units which are detachably connected to each other. One of the structural units contains the transmitter electronics and the key shank, while the other structural unit contains the battery and a button for connecting the battery to the transmitter electronics. The attachment of the two structural parts to each other is effected by means of dovetail guides.

Abstract: A lock comprising a hollow cylindrical seat, a cylindrical lock body for insertion into the seat and having a cavity in its exterior surface to accommodate a sphere therein, a screw hood for screwing onto the lock body, the hood having a plurality of cavities on its interior surface to accommodate the sphere, and a cylindrical lock barrel for insertion into the lock body and having a conical recession for accommodating the sphere to permit removal of the lock barrel and for pushing the sphere into the cavity in the screw hood to prevent removal of the lock barrel from the lock body.

Abstract: A portable steering column locking apparatus in two pieces for surrounding the steering column of an automotive vehicle and specifically enclosing the ignition switch and the skin of the steering column beneath which the ignition control rod is located. The cylinder operates in a bolt wing and a striker wing part that cannot be pried apart because of housing projections fitting respectively within side recesses in the wings. The locking cylinder has a carbon steel crosspiece deadbolt operating within an internal "F" groove in the bolt wing and therefore cannot be defeated by common tools used to extract cylinder tools. The hinge of the housing pieces is sealed by welding against access.

Abstract: Composite-coated flat-rolled steel can stock processing and product for fabrication of sheet metal cans, in particular for three-piece, welded or cemented side seam cans. Single or double-reduced, low carbon, flat-rolled steel of a gage in the range of about 55 to 110 pounds per base box is flash coated with tin (0.05 #/bb), which is alloyed with the steel base metal; at least 0.20 #/bb of tin is added to one surface only, flow brightened and water quenched; chemical treatment chrome oxide coating of about 100 to 750 milligrams per square foot is added to both surfaces and an organic coating of 2.5 to 15 milligrams per square inch is added to the surface which is free of flow-brightened tin for disposition internally of a can fabricated from such coated can stock. The equivalent of quarter-pound and higher coating weight tinplate protection is provided while decreasing tin requirements and maintaining three-piece can fabrication properties not available with coating metal substitutes for tin.

Abstract: A method of continuously forming edgewise wound cores from a strip of generally thin ferromagnetic material at at least one operation station therefor having a means for receiving the cores. The receiving means includes a pair of separable means adapted for association with each other and separation, and a set of supporting means is operable generally in one of the separable means for movement between retracted and protracted positions, respectively. In the practice of this method, the continuous strip is deformed generally edgewise thereof into a plurality of helical convolutions at the at least one operation station. The separable means are separated from each other, and thereby the operation of the supporting means toward the protracted positions thereof is effected.

Abstract: Plane, rectangular sheets (10) are moved through between a driven bending roll (32) and a plurality of back-up rolls (34) and are bent round the bending roll (32) by these rolls and a plurality of pressure rolls (52, 56) disposed behind the bending roll (32) and back-up rolls (34). The almost completely rounded sheet (10) is bent resiliently away from the bending roll (32) by a deflecting member (62) as a result of which the front edge (10a) of the sheet is prevented from re-entering the gap between the bending roll (32) and the back-up rolls (34) before the rear edge (10b) of the sheet has travelled through this gap. Then the deflecting member (62) is moved back into its position of rest so that the front region of the sheet (10) springs back in the direction of the bending roll (32) and as a result is again gripped by the bending roll (32) and the back-up rolls (34) and moved through between them.

Abstract: A method of cold drawing seamless metal tubes each having an upset portion on each end. A draw bench used for carrying out the method of this invention comprises a die control device, a plug control device including a plug having large and small diameter bearing portions and a draw unit. The die control device and the plug control device are movable with each other for changing a cross sectional reducing area between the reducing die and the plug. The method is characterized in that the cross sectional reducing area between the reducing die and the plug is preferably changed in accordance with the desired forms of a mother tube to be drawn by longitudinally transferring the reducing die and the plug and fixing them at the selected positions.

Abstract: A hydraulic stretching machine for straightening and stress-relieving rails, the machine being defined by stretching grips and fixing shackles being displaceable individually and independently, laterally and vertically, with respect to the longitudinal axis of the stretching machine, and grip-holding jaws which can be oriented about a longitudinal axis, the jaws including a fixed jaw and a mobile jaw articulated in and upon the fixed jaw.

Abstract: A shape controlling method for controlling the shape of a sheet rolled in a rolling mill, with the shape pattern of the sheet being approximated by a formula of an order of a large number, in accordance with the detected shape signals. Asymmetrical fundamental component (component of the first order) is extracted from the approximating formula. The control with respect to the fundamental component is allotted to the rolling reduction function, while the controls relative to the higher order asymmetrical components are conducted by other final control element than the rolling reduction function. The asymmetrical fundamental component causes winding of the sheet during rolling. By controlling the fundamental component separately from other components, it is possible to improve the shape of the rolled product while avoiding winding of the product under rolling operation.

Abstract: There is disclosed a shrink forming apparatus for rounding vehicular wheels and other annular workpieces. The apparatus includes a power actuated shrinker barrel assembly slidably retained for axial movement about the body of the apparatus. Rounding dies are connected to the shrinker barrel assembly for movement in a radial direction and engagement with the workpiece to perform a shrink forming operation. The apparatus further includes means for substantially eliminating the working clearance between the shrinker barrel assembly and the apparatus body during the shrink forming operation.

Abstract: A method and apparatus is provided for stamping or printing identification indicia on a circular segment such as the flat portion of the head of a cap screw, bearing race, or stud end. The adjustable diameter stamp uses a plurality of segments which, when fitted together, form a cylinder or other polygonal shape which is held securely in a matching collet during the stamping operation. Variable diameter stamping is accomplished by using different sized stamping segments. Also, shims may be used to provide marking diameter adjustment. The preferred embodiment uses four wedge-shaped stamping segments.

Abstract: A sensitivity-calibration circuit for an HC analyzer includes a scale factor adjuster for setting a scale factor in the analyzer for determining an n-hexane reduced gas concentration value of propane gas used during sensitivity-calibration of the analyzer and a sensitivity adjuster for adjusting the sensitivity of the analyzer and a switching means for switching the circuit between a first calibration state and a second measurement state.

Abstract: A method of making a tube spring manometer measurement system is disclosed. The system, comprising a tube spring, display assembly and at least one operating member which actuates said display assembly, e.g. a tie rod, is mounted and assembled to form a functional assembly. A predetermined reference pressure is then applied to the tube spring. The deflection of the display assembly caused by said reference pressure is compared to a theoretical deflection. If the difference between a theoretical deflection associated with said reference pressure and the observed actual deflection is excessive, local heat is supplied by means of a laser beam to at least one operating member and/or said tube spring, thereby removing material and/or altering the internal tension thereof. These changes are utilized to influence the range and/or zero baseline of the instrument.

Abstract: A thermal probe for use in a tightness testing apparatus for an underground storage tank provided with a fill pipe extending from ground level down to the tank, and including a mechanical compression, ring-shaped seal which sealingly engages the outer periphery of the access or fill pipe of an underground storage tank and expands to form a leak tight connection therewith.

Abstract: Friction pressure losses are obtained for non-Newtonian or generalized Newtonian fluids being pumped through conduits at high flow rates, such as in hydraulic fracturing of subterranean formations, by measuring friction pressure losses in a pipe viscometer under laminar flow conditions. The pipe viscometer includes a pump which supplies fluid to a continuous loop having three pipe sections of different diameter for measuring pressure drop at different flow velocities. Sets of data points of generalized shear stress and shear rate are measured for determining the consistency index (K') and the Power Law or flow behavior index (n').

Abstract: The viscometer comprises a measuring element suspended on a torsion wire and immersed in a substance to be tested contained in a measurement vessel. The measurement vessel with the therein contained substance is driven by a first drive member. A second drive member as well as a measuring system are arranged on a shaft between the torsion wire and the measuring element. A signal transducer prescribes or sets a predetermined amount of torque for the second drive member. The predetermined amount of torque corresponds to a predetermined shear stress characteristic of the substance to be measured. A predetermined angular deflection or angular velocity is applied to the first drive member through a regulation connection arranged between the measuring system and the first drive member. The viscometer is, due to its high accuracy, particularly advantageous for applications in low viscosity ranges of structurally viscous substances.

Abstract: The fractional volumetric holdup .phi. of a dispersed phase in a two liquid dispersed phase system is determined by measuring the travel time of ultrasonic pulses on a fixed path for the dispersed phase, and for the two liquids separately, and caluclated according to the relation.phi.=t*-t.sub.1 /t.sub.2 -t.sub.1where t*, t.sub.1, and t.sub.2 are the ultrasonic pulse travel times through the dispersed phase, the first liquid, and the second liquid. The pulses can be transmitted from a transmitter transducer straight through the contents of a reactor to a receive transducer, or can be reflected off a die or similar flat faced member back to the originating transducer.

Abstract: A fixture for assisting in determining the location of a center of gravity of a torpedo, including a cradle suspended pendulously in a base or support. The cradle has a pair of rollers grooved to receive the torpedo, and provided with means for manually rotating the rollers to displace the torpedo axially until the cradle becomes level in the base when the location of the center of gravity may be observed or marked on the torpedo.

Abstract: A tire pressure detector comprises a hollow cylindrical casing having an internal screw thread for attachment to an inflating valve of a tire. A transverse partition member which divides the casing into two chamber is provided with a projecting pin for pushing the inflating valve to an open position. A cap member is secured to the casing for closing one of the chambers, and a piston member responsive to the pressure is mounted in the chamber. An alarm means is connected to the piston member and has a portion extending out through the cap member. The alarm means may be a graduated rod or an electric light means.

Abstract: A system for testing space weapons includes a weapons platform and at least one target which are positioned in space, means for precisely determining the positions of the weapon and the target both with and without the cooperation of the target, a control and assessment system for receiving and processing weapon and target status and position data, generating command signals to the weapon and for generating, displaying and assessing weapon effectiveness data and a data communication system for maintaining communications between and among the weapon platform, the target and the test control assessment system.

Abstract: A surface acoustic wave device for measuring the mass flow rate of a gas includes a surface acoustic wave delay line formed of a piezoelectric substrate and having a temperature coefficient of delay on the order of 10.sup.-4 /.degree.C. The substrate has disposed thereon a transmitting and a receiving interdigital transducer, the transducers being configured to have an operating frequency in the range of from 10MHz to 1000MHz. That portion of the substrate located between the transducers defines a propagation region and has a medium deposited thereon for absorbing a portion of the acoustical and/or electrical energy flowing thereacross. This absorbed energy increases the temperature of the propagation region over that of the surrounding ambient.A mass flow of the gas across the sensor will decrease its temperature and result in an upward shift in the resonant frequency.

Abstract: A measurement system for remotely measuring a parameter and relative distance having a parameter sensor providing signals to control the pulse repetition rate of a pulse generator, the pulses from the pulse generator in turn controlling a switch to alternately connect and disconnect an energy storage device to the input of a sonic waveguide device. The output signals at the outputs of the sonic waveguide device control a driving device which provides a representation of these output signals on a transmission line arrangement.

Abstract: An angular velocity sensor utilizing the Coriolis effect on a fluid jet employs a metal diaphragm impulse jet pump with no valves to reduce temperature sensitivity. The pump anvil, the nozzle block and the sensor plug may all be fabricated of the same material to further reduce temperature sensitivity. The thickness of the sensing elements is selected to reduce temperature sensitivity still further.

Abstract: An accelerometer with improved resistance to errors due to thermal stress. The accelerometer comprises a proof mass assembly (44), a stator (40), and an interface member (90) that includes a plate-like body positioned between the proof mass assembly and the stator. The proof mass assembly includes a reed (72) suspended from a support (70), and a reed capacitor plate positioned on the reed. The body includes a body capacitor plate (94) positioned to form a capacitor with the reed capacitor plate. The interface member includes first mounting member (110) for securely mounting a first area of the stator with respect to a corresponding first area of the support, and a mounting element (126) extending between a second area of the stator and a corresponding second area of the support. The mounting element is relatively compliant along a first axis, and relatively rigid along all other axes. The first axis lies in the plane of the body and passes approximately through the first mounting member.

Abstract: A microscope having an optical head and an additional head is disclosed. A slide plate on which the additional head and optical head are arranged in such a manner that they are separated by a predetermined spacing in the Y direction is slidably secured to an arm of the microscope. Under such a construction, an observation by a raster image and an optical observation by a optical image can be performed precisely for the same region of a specimen by moving the additional head and optical head integrally by a distance substantially equal to the spacing by means of the slide plate.

Abstract: An ultrasound imaging apparatus transmits or receives an ultrasound beam by switching connections between ultrasound probes and a transmitting and receiving system. Channels of the transmitting and receiving system are respectively connected to first and second connectors through first and second N switching elements. Each of the first and second connectors has N connecting terminals. The terminals of the first and second connectors are respectively connected to 2N terminals of a third connector. The switching elements and the first to third connectors constitute a switching circuit. The switching elements in the switching circuit are selectively turned on/off according to a desired ultrasound transducer connected to a corresponding one of the first to third connectors, thereby causing the ultrasound transducer to transmit or receive the ultrasound beam.

Abstract: Arrangement for the ultrasonic examination of objects by a local immersion technique, comprising:a source of liquid,a pump fed by said source,a coupling head fed with liquid by said pump and capable of directing towards the object to be examined a jet of the said liquid and a beam of ultrasonic waves which is contained in said jet and is coaxial with this jet, said coupling head comprising:(a) a first tranquilization chamber connected to the outlet of said pump,(b) a second cylindrical tranquilization chamber connected to the said first chamber by at least one channel for the passage of the liquid,(c) an ultrasonic transducer capable of emitting a beam of ultrasonic waves by means of an active surface, which is directed towards the object, said active surface being situated in the second chamber, centered on the axis of said second chamber and perpendicular to this axis,(d) a converging system coaxial with the said second chamber, the shape of which results from a calculation for the purpose of reducing or el

Abstract: A pressure transducer, which includes a silicon diaphragm with ion-implanted resistors in Wheatstone Bridge configuration and in insulating layer covering the diaphragm, is provided with temperature compensation for differences in thermal expansion coefficients of the layers by depositing a layer of aluminum onto the central portion of the diaphragm.

Abstract: A pressure pick-off for generating electrical signals comprises a reference pressure chamber which is oxygen-free, at least one pressure dependent deformable membrane closing the reference pressure chamber from a medium under pressure and supporting at least one electric sensor element, and a conductor located in the reference pressure chamber and connectable with a measuring current circuit, the conductor being formed so that during a leakage in the reference pressure chamber it is oxidized by penetrated oxygen so that it is electrically interrupted.

Abstract: A plurality of parallel rows of short flexible tubes lead from a housing. Each row is provided with an elongate bar in which each tube is provided with a transverse fluid passage leading to a port by means of which the respective tube may be connected to an outside fluid conduit. Each elongate bar, by virtue of the flexibility of the tubes, may be pivoted to one side, thereby giving access to connections at interior bars. The structure has particular utility in a system where a plruality of fluid pressure pickups are fed to individual pressure measuring transducers in the housing. Partitions and actuating bladders are interposed between the flexible tubes, so that inflation of a given bladder will pinch off a row of flexible tubes and allow a selected group or row of tubes to be selectively connected to the pickups. In this way a limited number of transducers in the housing may be used to successively measure a much larger number of fluid pressure pickup points, by time sharing use of the transducers.

Abstract: A flow meter (10) particularly adapted for measuring the mass flow rate of pulverized coal being introduced into large scale power generation boilers. The meter includes a transmitter (14) which generates a pulsed beam of ultrasonic impulses. A receiver (18) is positioned across the flow filed from the transmitter and receives the ultrasound pulses. The meter measures the downstream drift of the ultrasound pulses and their attenuation which is related to flow velocity and concentration, respectively. The instrument includes electronic circuitry (28) for automatically adjusting the relationship between transmitter and receiver, and performs numerical analysis routines on the signal outputted from the receiver to provide a signal related to coal concentration and velocity.

Abstract: This invention realizes an electromagnetic flowmeter detector of a short inter-face distance having a measuring tube with at least one pair of electrodes disposed mutually opposingly on the inner surface of a non-magnetic pipe through which fluid passes, and a coil section including coils wound in a toroidal form, facially symmetrically with respect to a first plane including a fluid axis and the first plane being orthogonal to a second plane including the electrodes and the fluid axis, around a magnetic core of a cylinder shape disposed concentrically with a gap on the outside of the measuring tube.

Abstract: A transfer valve system, method and apparatus are disclosed having a three element valve with a central element sandwiched between front and rear outer elements. Between an aspiration and a discharge position the front and rear outer elements are moved in opposite directions of unequal distances in the same direction with respect to the central member or one outer member and the central member are moved in the same or opposite direction with respect to the other outer member so long as the outer members end up shifted with respect to each other. In the aspiration position, two sample segments are contained in series within the valve. In one embodiment of the invention, one segment is contained within a conduit in the central member and the other segment is contained within a passageway in the rear member. In another embodiment of the invention, the two segments are contained within different conduits of the central member.

Abstract: The present invention provides an apparatus and method for trapping and injecting a fluid sample (liquid or gas) at high temperature and pressure without any sample loss. Here, a sample is flowed into an aperture in the valve body and then into a sample chamber. The sample chamber is mounted in a slidable stem and once the sample is in the sample chamber, the stem is moved to a position to seal off the sample. Once the sample is trapped, the valve is moved to a chromatograph (while maintaining the sample at pressure and temperature), flushed with a carrier gas, and the stem is moved to open the sample chamber to the gas. This flushes the sample and moves it to the chromatograph.

Abstract: A soil analyzer and penetrator for driving into the ground, having a hydraulic ram with a longitudinal opening with a hollow tubing extending through the opening. A two-way chucking mechanism engages the outside of the tubing for driving the tubing into the ground and pulling the tubing from the ground. A coiling and straightening mechanism is positioned above the ram engaging the tubing for coiling the tubing as it is removed from the ground and straightening the tubing when it has been driven into the ground. A cone is connected to the bottom end of the tubing and may be of various types for measuring various ground parameters and inserting or removing materials into/from the ground.

Abstract: A power drive and lift-and-carry mechanism in which a rotary input drives a mechanical system to produce a relatively long dwell stage and, in combination with a crank drive mechanism, produces a transfer motion with a substantially straight lift and lower motion coupled with a horizontal component in a smooth transfer motion for work parts.

Abstract: A purely mechanical apparatus using a number of centrifugal force generating devices produces a unidirectional continuous centrifugal force on the main frame of the generator which is capable of propelling the generator in a straight line or of imposing a force on another body against which the generator may be placed.

Abstract: A threadless linear actuator apparatus comprising a sealed actuator unit with a sealed housing for a set of spool-shaped roller bearings. The roller bearing set includes at least one variable pitch loading roller and two fixed pitch rollers arranged in a skewed relationship about a cylindrical drive shaft. A variable moment is applied to the apparatus through a moment applied about an axis which is perpendicular to and intersects the drive shaft axis which, when applied, varies the pitch of the pivotable loading roller.

Abstract: A continuously variable friction drive transmission has expandable fluid housing members on both the input shaft and the output shaft. The housing members are in fluid communication with a control valve which is operable to establish the fluid pressures in the housings. The housings are maintained in frictional engagement by the internal fluid pressure such that power can be transmitted between the shafts. The drive ratio between the shafts is determined by the internal pressures of the housings which establish the outer diameters thereof. The drive ratio is changed by changing one or both of the internal fluid pressures.

Abstract: The continuously variable transmission of the present invention comprises a pair of elements such as toroidal discs, spaced from each other and rotatable about a transmission axis and having facing surfaces, a third element rotatable about the transmission axis, having at least one roller rotatably mounted on a portion of the third element between the first and second elements for peripheral surface contact with the facing concave surfaces of the first and elements, and means for shifting the points of contact between the roller and the first element and the roller and the second element so as to change the radii from the transmission axis of the points of contact. Preferably, the discs are the driver elements, and the third element is the driven element.

Abstract: A shift gear, specifically for motor vehicles, has a main shaft (9) and an auxiliary shaft (8). Arranged on these shafts are several gear groups (56), (7); (14), (15); (16), (17), with two gears each being constantly in mesh. For shifting the gears, sliding sleeves (12), (13) are arranged on the main shaft (9), one of these sleeves at a time being positively couplable to one of the gears (56), (14), (16). To synchronize the sliding sleeve to be engaged, either a retarding device (20) or an accelerating device (46), (50) acts on the main shaft (9), depending on the direction of shift. A planetary gear train (50), which may be part of said accelerating device, has a gear component (22) which can be retarded by means of a friction brake (24) and forms a clutch device for interrupting the flow of power from an engine (51) to an output shaft (27). Serving also the starting, the clutch device is arranged on the transmission output.