Abstract: A bi-directional printed circuit motor is coupled to drive at least a pair of one way clutches which selectively actuate one or more utilization devices dependent on the direction of the motor. The utilization devices may, for example, include a print hammer assembly, an inked ribbon and paper driver of a high speed printer in a computer system.

Abstract: A machine is provided for pitching one or more balls at selected intervals by selectively connecting a clutch mechanism to a pitching arm.

Abstract: An electrostatic copying machine includes a reservoir for liquid developer made up of toner particles in a dispersant. A photoconductive drum, adapted after receiving a latent electrostatic image thereon to pass through the liquid developer in the reservoir and to have an electrostatic image developed on the drum. A metering roller for removing excess dispersant is positioned between the reservoir and an air knife which projects a sharp thin jet of pressurized air at about a 45 degree angle with respect to the surface of the drum. The air pressure produced by the air knife drives any remaining spent dispersant on the surface of the drum back to the reservoir by way of the metering roller and the latent image on the drum is subsequently transferred to paper.

Abstract: Finger print dispensing apparatus includes a compact manually operated portable unit. The unit includes a detachable brush for spreading the powder dispensed, a squeezable detachable container for holding the powder and a nozzle arrangement for delivering the powder to the brush when the container is squeezed. An extendible and retractable sleeve is provided to either house and shape the brush during non use or to expose the brush during use. Moisture proof means are provided on the sleeve to house the brush and keep the powder in the container dry when the apparatus is not in use.

Abstract: A wire bonding machine for wedge bonding fine wires to semiconductor devices is provided with a rotating bonding head which is mounted on a fixed machine frame and having a X-Y table mounted on the fixed machine frame opposite a vertically movable bonding tool mounted on the rotating bonding head. The bonding head is provided with means for articulating the bonding tool in a vertical direction and in a rotational direction. The rotational movement of the novel bonding head does not impart vertical movement to the bonding tool.

Abstract: This invention includes timer means in combination with switching means disposed in a copying machine for cyclically and automatically activating a pump which circulates liquid developer through the copying machine for a predetermined period of time thereby periodically mixing the toner particles and dispersant in the liquid developer while also rotating the copier drum through an incremental angle thereby periodically immersing each section of the drum surface in the liquid developer reservoir.

Abstract: A tomato harvester includes means for severing tomato plants below ground and for depositing them on a movable conveyor on which the tomatoes are separated from the vines. A plurality of flexible spring-like elements extend vertically downwardly toward the conveyor and are moved transversely back and forth across the conveyor to move the flexible elements into contact with the tomato plants as they are conveyed to assist in dislodging the tomatoes from the vines.

Abstract: An oncotic pressure measurement cell which comprises a transparent plastic upper sample chamber and a lower metallic reference chamber into which the lower, threaded ends of vertical clamping rods are anchored. The upper chamber has vertical passageways through which the rods are passed. The lower metallic reference chamber is coupled, in use, to an appropriate pressure transducer. An aperture is formed in the top of the reference chamber which communicates with the interior of the reference chamber and is covered with a semi-permeable membraneous disc made of plastic. A nylon washer is placed over the disc to retain it in place thereby producing a semi-permeable barrier between the chambers. After this upper chamber is moved downwardly with the clamping rods passing through the passageways, thumb nuts are screwed onto the upper ends of the rods thereby forcing the upper chamber downwardly and pressing the nylon washer tightly against the semi-permeable disc.

Abstract: A servo amplifier system for an accelerometer includes a torque coil. A torque coil is included in the output circuit of a first amplifier. A position sensor circuit develops a signal corresponding to the position of the coil which is applied to the input circuit of the first amplifier. An element, which may be a resistor, senses the current through to the coil and produces a voltage which is applied to a second amplifier having a low impedance output circuit. The output signal from the second amplifier is fed back to the input circuit of the first amplifier. Means are associated with the second amplifier to comply with the scaling and bandwidth requirements of the system.