Abstract: An electromagnetically actuated locking clutch for differential gears of motor vehicles having two concentrically disposed toroidal coils (8, 21) firm on a housing, one for a non-positive disk clutch (14) and the other for a positive claw clutch (26) concentrically disposed in respect thereto. Both clutches (14, 26) connect a hub (2) and a socket (3). The hub (2) and the socket (3) are each non-rotatably connected with a connecting member of the differential gear. The disk clutch (14) is closed by an automatic device when a limit value for a relative speed is exceeded. The claw clutch (26) is optionally closed and automatically opened when a limit value for an actuation period is exceeded.

Abstract: A mine roof support includes a pair of substantially-parallel floor-engaging members, a roof engageable member, a shield pivotally-connected to the floor-engaging members, by at least one pair of parallel links, and pivotally-connected to the roof-engageable member, and prop means carried by the floor-engaging members by which the roof-engageable member can be urged into engagement with a mine roof. A strengthening member connects the pair of parallel links. The strengthening member and the pair of parallel links provide the sole connection between the rear-end portions of the floor-engaging members by which the forces tending to cause relative displacement of those rear-end portions in the vertical direction are substantially resisted.

Abstract: A composite leg-support with high loadability having a tubular vertical shank (4) and legs (1) which are releasably affixed to the shank and extending essentially horizontally and radially therefrom. The ends of the legs (1) pointing toward the center of the shank (4) have extensions (2, 3, 13, 18) which protrude into the interior of the shank (4), through openings (5) distributed along the periphery of the shank (4), and they engage in a force-locking manner with profiled discs (6, 10, 15) contained in the shank (4). The discs (6, 10, 15) are pressed towards one another by means of screw (11) extending along the longitudinal axis of shanks (4) and it is accessible from the lower end portion thereof.

Abstract: An improvement for attaching fastener strips to other objects wherein a strip of fastener material is formed into the surface of urethane foam or the like during molding in a mold. The fastener material comprises a backing strip having an outer surface adapted to mate with the foam material during molding and a fastener strip having an outer surface comprising one-half of a fastening system such as hook and loop fastening material. The backing strip and the fastener strip are attached to one another with their respective inner surfaces in face-to-face relationship with their outer surfaces facing outward. The fastener material fits within a longitudinal groove in the mold and the backing material overlaps the groove. The invention comprises an improved apparatus including a backing strip that is wider than the fastener strip and provides exposed strips on both sides of the fastener strip.

Abstract: A vehicle roof with a roof opening which can be closed by a panel which is pivotable about its front edge. A strut, with a rack on one side, has one end pivotally attached to the rear edge of the panel. A geared shaft is mounted on the underside of the vehicle roof and engages with the rack to raise and lower the rear edge of the panel. The shaft is spring biased into geared engagement at separate locations along its length. Stop formations adjacent to the end of the strut opposite to that which is attached to the roof panel are engaged by a blocking lever to prevent movement of the strut beyond the range of positions in which the geared shaft can engage with the rack.

Abstract: Polymerizable acrylic monomer adhesive systems comprising thirty to eighty percent by weight powdered aluminum filler material are disclosed. More specifically, the adhesive compositions comprise at least one polymerizable acrylate monomer system; an effective amount for initiation of a free radical initiator; and elemental (atomized) aluminum metal powder or powdered alumina.

Abstract: A retarder, suitable when mounted in association with a rail of a railway track for reducing the speed of a wagon rolling along the track, includes an hydraulic unit which comprises a hollow member, a piston slidably housed in that member, and a piston rod. A portion of the hydraulic unit is, for retardation of the wagon, disposed in the path of a wagon wheel. When that portion is engaged, directly or indirectly, by a wheel it is deflected by, and out of the path of, the wheel to permit the wheel to pass the retarder. The ratio of the diameter of the piston to the diameter of the piston rod is in the range 2.80:1 to 6.00:1 and the ratio of the diameter of the piston to the length of stroke of the hydraulic unit is in the range 0.53:1 to 1.20:1.

Abstract: A frictional drive unit, suitable for effecting linear sliding movement of a structural member into a cantilevered position, includes a frame, at least two sprocket assemblies mounted in bearings in the frame and spaced apart with their rotational axes parallel to each other, and an endless track. This track comprises a plurality of articulated friction pads mounted upon the sprocket assemblies and drivingly engageable with the structural member. Reversible motor means is carried by the frame and is drivingly connected to at least one of the sprocket assemblies.

Abstract: A power-drive transmission (1) with viscous clutch (7) between the hollow wheel (6) and the sun wheel (5) of the front-wheel planetary gear (1). The front wheel planetary gear (1) is axially situated between the take-off wheel (6) and the clutch (7). The sun wheel (5) and the take-off wheel (6) form together a single structural part. Many structural parts are produced substantially without cutting either (5,6,8) by sintering, casting or cold recasting or (4,14,15,16) by sheet-metal recasting technology. The viscous clutch (7) becomes a cheap, easily assemblable exchange part which, filled with silicon oil and functionally tested, is prepared as spare part ready for installation.

Abstract: Clamping means for a strap, adapted to be located between a strap storage location and a strap utilization location, comprises reaction member pivotally mounted on a base member for angular movement about a first axis, a guide member pivotally mounted on a support member fast with the reaction member for angular movement about a second axis positioned between the reaction member and the first pivot axis. Resilient means retains the guide member and the reaction member in respective rest positions in which the strap is freely movable between the guide member and reaction member until the tension applied to the strap exceeds a predetermined level. When the tension in the strap exceeds said predetermined level, angular movement of the guide member causes corresponding angular movement of the reaction member, thereby wrapping the strap round both the reaction member and the guide member so that one layer of the strap is clamped against the reaction member by another layer of the strap.

Abstract: The magnet body (11, 12, 13, 17) is composed of the winding (13) with U-shaped arrangement of separate parts, wherein specially the side leg portions (11, 12) are radially held together by a plastic shell (14) that also insulates the winding (13) and which grips into the spaces of the arrangement of side leg portions (11, 12) with projections (15), which are axially penetrated by spacer sleeves (8) or bolts (9) and eventually also individual pressure springs (18). The expenses of molding and fine processing for the conventional magnet are spared or greatly reduced and the assembly is also simplified in different respects.

Abstract: A variable-pitch bladed rotor including a plurality of blades extending outwardly from a hub in which they are each mounted by a respective ball-screw device. Each device comprises inner and outer races each provided with at least one helical groove, a plurality of balls co-operable with the grooves, and a cylindrical cage disposed between the races which is suitably apertured for accommodation of the balls. The cage supports gearing so associated with the inner and outer races that on pitch-change movement of the respective blade the cage is positively driven, thereby to turn about the blade longitudinal axis.

Abstract: A radiator valve having an enclosed pre-adjustment arrangement. In the valve body (10) a plastic insert (36) is disposed, having a coaxial, conical inner surface (38) and a projection (40) provided with a flow opening (34). The flow opening is made with a desired accuracy of size and surface smoothness. The pre-adjustment spindle (12) has a conical member (44), including a shield member (52), the height of which increases continuously. The shield member (52) is adjusted in order to cover up a larger or a smaller portion of the flow opening (34) and is locked by means of a tightening nut (62).

Abstract: A rotary encoder includes a train of gears meshed together in a multi-stage so as to reduce the driving number successively and encoders provided with the gear shafts in desired stages in order to count the number of revolutions of a power input shaft. The driving wheel and its corresponding driven wheel between desired two stages of the train of the gears are formed into such intermittent feed means as permitting idling of the driving wheel by cutting off suitable parts of the meshing portion of at least either one of the driving wheel and driven wheel in accordance with the reduction ratio required in driving number between the desired two stages. The present invention can thus provide economical and highly-accurate rotary encoders of the absolute type, which has a wide counterable range, without need for especially-high accuracy with respect to their designing accuracy, the machining accuracy of their gears, assembling accuracy and the like.

Abstract: A breech assembly for a muzzle loader. A breech block is fitted into the gunstock and receives the barrel. The breech block includes a first bulkhead disposed over the barrel breech end and has a first bore with an axis parallel to the barrel axis. The breech block includes a second bulkhead spaced from the first bulkhead creating a space there between. The second bulkhead has a second bore in axial alignment with the first bore and the breech block includes a vertically disposed chimney bore communicating between the bottom of the space and the outside atmosphere. A nipple is disposed in the bore facing the space and has a third bore sized to releasably receive a percussion cap. The nipple has a fourth bore communicating between the bottom of the third bore and the barrel interior. A cylindrical sliding sleeve is disposed within the second bore and is slidable between closed and retracted positions.

Abstract: A mechanism for the transportation of objects has an endlessly rotating roller chain (4) supported and guided by a support structure (1). Pallet-like sliding carriages (12) are situated on the roller chain (4) for receiving objects to be transported. The sliding carriages (12) are conveyed by guide elements (17,23) engaging tracks (18,25) of the support structure (1). The sliding carriages (12) are connected in straight conveyor sections with the roller chain (4) for conveyance therealong by friction-carrier elements (29) and are connected in curved conveyor sections with the roller chain (4) by roller engaging recesses (34).

Abstract: These drive connections with freewheel mechanisms, especially provided for advancing and reversing operation of all-wheel vehicles, have at their disposal fully self-acting reversing shift rings (13) depending exclusively on the respective direction of rotation of the shafts (1, 2) serving as sensors of direction of rotation (22) after the reversal operation there are provided locking elements that become entirely free from torque transmission and have controlling forces dependent on direction of rotation (helical toothing, tiltable ratchets, detent balls, etc.) on a shift ring (13) which is movable by the sensor of direction of rotation (22).

Abstract: Shock and vibration isolation mounting apparatus for releasably mounting a computer disk drive, or the like. Two pair of mounting assemblies are used for attaching to the drive and to respective ones of opposed surfaces between which the drive is disposed. One of the pair of mounting assemblies is disposed below the drive with the elastomeric members thereof in compression and the other of the pair of mounting assemblies is disposed above the drive with the elastomeric members thereof in tension. Each of the mounting assemblies comprises a first elongated rigid channel member being U-shaped in cross section and comprising a base separating a pair of parallel spaced sides. The first channel member has a transverse member having a bore therethrough at one end perpendicular to both the base and the sides. The first channel member is adapted for attaching to the disk drive.

Abstract: An electrical machine comprising a stator having electrical windings and a permanent-magnet rotor which carries a shaft arranged for connection to a prime mover. The machine, when the shaft is driven by a prime mover, acts as an alternator to produce alternating electrical current. A commutator is provided on the shaft and electrical-current-transferring brushes are associated with the commutator. Means is electrically associated with the segments of the commutator and with the electrical windings on the stator so that, whe the brushes are connected to a source of direct electrical current, the machine acts as a motor and the shaft is caused to rotate for starting a prime mover connected to the shaft.