Abstract: Wheels for movement along a floor-mounted track at the bottom of a sliding door are shown supported within U-shaped members which are pivotally coupled to brackets secured to the lower edge of the door. The wheels are prevented from being dislodged from the track via retainer elements, each of which is a channel element having an elongated opening in its web and inturned flange terminations at the edges of its walls. An integral plate extends from one side of the channel and is pivotally mounted on the pin or stub shaft extending through the wheel and U-shaped member. The retainer element is significantly longer than the diameter of the wheel, and the flange terminations are snapped over the track and in interference relation with lips of the track. The wheel at its lower portion extends through the opening in the retainer element and rides on the track.

Abstract: A motorcycle swingarm is shown in which each arm is an extrusion of lightweight metal which in cross-section is a diamond with a cross rib and integral upper and lower fins. The upper fin is the larger, and is shaped to taper from both ends. The arms are bent slightly intermediate their ends, and at one end have a sleeve bearing welded thereto. At such one end, arcuate plates are also located between the arms and welded to them. At their other ends, each arm is slotted to receive an oblong slotted block which is welded to the arm. Also, the arms intermediate their ends have tabs welded thereto for providing connection points for shock absorbers and chain tensioners.

Abstract: An automatic stacker is disclosed having finned rotors to be turned incrementally so respective fins are horizontal and are spaced to support thereon the edges of a flat partition. Such partitions are successively moved onto the horizontal fins and the rotors are successively incrementally turned so as to drop the partition held thereon and to receive the next succeeding partition. The partitions thus dropped fall onto a conveyor on which succeeding partitions are overlapped, and such partitions are moved in groups to an inclined plate at which the partitions are forced to incline upwardly and close together to form an inclined stack.

Abstract: A keeper element is shown for insertion in a sill extrusion in which the lower rail of a sash is movable. The keeper is a channel-like element with the terminal edge of one wall having interruptions for mating and interlocking with portions of the sill, such as spaced tabs adapted to extend into weep holes in the sill, or notches adapted to fit around internal sill projections. The keeper also has an upper surface confronting the lower rail in which a number of spaced openings are provided. A latch element is vertically slidable on a stile of the sash, and is adapted to be lowered so it extends into one of the openings in the keeper. In this manner, the sash is releasably locked in any of a plurality of positions, with security maintained because the keeper is locked against movement relative to the sill.

Abstract: A plurality of teeth are individually rotatable on a shaft via integral hubs which are slidably mounted on and rotatable relative to the shaft. A bar is held parallel to the shaft by rigid connecting members between them, and respective biasing springs are connected to the bar and to respective fingers that are integral with the hubs. The shaft is rotatable in spaced brackets which are welded to the bottom of a slotted plate that is removably anchored in the top of a housing or frame that is adapted for embedment in a street surface or parking lot surface. The shaft is keyed to gear mechanism supported by the surface plate, the gearing being such as to permit the shaft to remain in a selected angular position. In one position of the shaft, all teeth protrude through slots to extend above the surface plate, and in another position all teeth are retained within the slots below the top surface of the plate.

Abstract: A card has two sets of magnetized spots, one set being readable by a reader in an on-line system, and the other set being readable by an off-line reader. Coupled to the off-line reader is a pulse generator adapted to develop pulses of the same character as "go" and "no-go" pulses generated by a station query and stored data comparison console in response to data from the on-line reader. A gate network normally keeps the console in communication with the on-line reader, but is operated to couple the pulse generator to the on-line reader when the console fails to query and cannot send command pulses. Also disclosed are timing devices for delaying operation of the output apparatus for a period corresponding to the time required for the normal on-line system operation to actuate such apparatus.

Abstract: Strips with confronting notched edges to be interlocked for forming a multi-cell partition have their un-notched edges slidable in opposed channels, and they are moved laterally in one direction to cause their notches to intersect. For an illustrated 12-cell partition formed of three double-notched strips and two triple-notched strips, intersecting is shown to be done by inserting the three tabs of each double-notched strip into first, second and third grooves in one fact of an elongated bar, and by inserting the notched edges of the two triple-notched strips into respective slots in the bar, wherein one slot is located between the first and second grooves and the other slot is located between the second and third grooves. Such triple-notched strips are moved at an angle with respect to the other strips, and drives for the sets of strips are synchronized to effect interleaving of the tabs and intersecting and interlocking of the sets of strips via their notches.