Abstract: A honing tool comprises an hexagonally shaped mandrel having a cylindrical bore extending centrally therethrough. Six similar tool holders are each provided with a pair of spaced cylindrical gear racks having rack gear teeth formed thereon and integrally attached to an elongate tool support. A metal tool carrier to which is suitably bonded a tool, such as an abrasive cutting stone or a wiper is removably attached to a respective tool support by a clamp screw. The gear racks of each tool holder are slidably mounted in respective bearings holes in the mandrel. Gear teeth on the racks mesh with gear teeth formed on a splined shaft rotatably mounted in the mandrel bore. Thus, rotation of the shaft counterclockwise relative to the mandrel extend all of the tools outwardly to extended positions.

Abstract: An engine exhaust noise suppression system comprising a plurality of bypass ports surrounding the exhaust tailpipe and opening to the atmosphere to create streams of cool air which generate vortices effective to dampen the exhaust noise vibrations and to contain the same as they dissipate into the atmosphere. Fluid is injected into the air streams to enhance the vorticular action thereof by applying a helical swirling motion to the streams.

Abstract: A dual line slip printer wherein a slip is dropped into a chute to bottom against a supporting member and a serially operated inkjet print head is moved along the length of the slip to print a line of type characters and is then returned to print a second line of characters. As the print head reaches the end of its travel it actuates a camming member to raise the support member to move the slip from one level to another so that the second row of characters will be spaced vertically from the first.

Abstract: A data printer wherein a slip is dropped in a guide chute and a serially operable print head is moved along the length of the slip to print a line of characters. A line feed device comprises a drive gear meshing with a driven gear carrying a feed roller for frictionally advancing the slip from one print line position, extending parallel to the length of the slip, to the next. The driven gear is moveable about the axis of the drive gear and is forced into frictional engagement with the slip by the rotational force imparted to the driven gear by the drive gear.

Abstract: An annular rotator is mounted between inner and outer stators and has a plurality of combustion chambers therein, each having an inlet port to receive a pressurized explosive fuel mixture from a source at one point in the rotation of the rotator and an exhaust port to later register with an exhaust opening in the outer stator when the fuel mixture is ignited. The intake ports later register with a source of presurized air and the exhaust ports register with additional exhaust openings in the outer stator to purge and cool the combustion chambers and to subsequently pressurize the chambers.

Abstract: A printer for printing data on an original slip and on a copy slip in which both are dropped into a guide chute. Feed and pinch rollers having a higher degree of friction that the friction between the slips tend to drive both slips along the chute and past an ink jet printer. However, a brake initially prevents rotation of the pinch roller and thus retains one of the slips while the other slip is advanced past the printer, at which time the brake is released to enable the feed roller to advance the remaining slip past the printer.

Abstract: An inexpensive device for acurately and intermittently feeding a component transporting tape to a pickup station of a circuit board assemblying apparatus wherein a yieldable actuator intermittently drives a tape feed pawl until stopped by an adjustable limit stop to precisely position each component. A takeup reel for removing a retainer strip from the transport tape is yieldably driven by the tape through a belt which is controlled by a constant tension device.

Abstract: A barrier device for preventing articles stored in a glove compartment of a motor vehicle from falling or rolling out when the compartment door is opened. The barrier device assumes a vertical blocking position when the compartment door is moved to open position but may be collapsed to enable access to the interior of the compartment for removing or inserting articles from and into the compartment.

Abstract: The knob spindle of a self contained electrically controlled door lock is locked and unlocked by a unidirectional miniature electric motor. The motor drives a lock pawl to and from locking position through cyclically operable mechanism including an energy storing spring. The mechanism invariably operates through a cycle and, if the pawl is prevented from moving, energy will be stored in the spring to subsequently move the pawl, thereby preventing stalling of the motor and undue drain on the batteries.

Abstract: Inclined chutes are filled with game balls of different colors or other visual characteristics. The underlying wall of each chute is formed of elastomeric material with openings therein of smaller diameters than the diameters of the balls so that the balls may roll down the chute and rest against each other and against a stop under the influence of gravity. Depressible plungers aligned with the openings may be selectively depressed to displace underlying balls through the openings from which they are guided to a display station.

Abstract: The knob spindle of a door lock is locked by a locking element supported for movement about an axis parallel to the spindle axis, and a latch, also supported for movement about an axis parallel to the spindle axis, latches the locking element in both locking and unlocking positions. Spring means urge the latch into latching position. Electromagnets are energized sequentially to move the latch into unlatching position and the locking element into unlocking position.

Abstract: A latch bar is connected to the plunger of a solenoid and is movable endwise to release an exterior knob spindle to enable the spindle to actuate a latch bolt retractor. A latch carried by the latch bar is held by the retractor to maintain the latch bar open until the retractor is later actuated by the spindle, thereby enabling a single electric pulse to effect release of the lock bar.

Abstract: A shopping cart or the like having supporting wheels, one or more of which has a non-rotating detenting element rotatably engaged by rollers of elastomeric material carried by the wheel. Detenting formations on the element yieldably brake the wheel in different rotated positions to restrain free movement of the cart from a parked condition while permitting intentional movement of the cart with a minimum of resistance.