Abstract: A seat adjustment and locking mechanism employs a pedestal permanently affixed to the deck and having a bore on its top frame member to engage a through bolt. The bolt supports a pin pad with a multiplicity of small pins on its top surface. A seat frame bottom wall containing a slot moves around the bolt and pin pad. A panel containing small holes is located within the seat frame. In a relaxed position the panel rests on the pin pad and causes engagement of the pins with the holes on the bottom surface of the panel to secure the seat in a locked position.

Abstract: An air motor having four circumferentially spaced, radially disposed cylinders the respective radially inner ends of which slidingly engage different faces of a cube-shaped cam that is eccentrically mounted with respect to a stationary motor housing. The cam serves as a drive shaft because its eccentric mounting causes it to rotate responsive to air pressure sequentially applied to the radially inner end of pistons that are fixedly mounted in circumferentially spaced relation to a circular piston chassis positioned radially outward of the cylinders. A cylindrical bore formed in the cam is partitioned into a pressure chamber and an exhaust chamber by a shoe seal member.

Abstract: The monitor employs a sensing piston whose position is balanced by offsetting the pressure to be monitored on one side of the piston by a reference pressure of approximately equal magnitude on the other side of the piston. A balance valve on the sensing piston controls the rate of flow of the reference gas from a first chamber bounded on one side by the sensing piston, into a second chamber bounded on one side by a signal piston having a striker whose surface is positioned proximate to the outlet of a gas jet tube. The gas jet tube is connected to a sensing gas pressure source and pressure detector and will produce a pneumatic signal when the striker surface of the signal piston blocks the outlet of the jet tube.

Abstract: A self-purging fluid pressure adapter is disclosed which is connected between a fluid test pressure source, a fluid pressure gauge, and a fluid container undergoing a pressure test. The adapter rapidly purges fluid pressure from the pressure gauge when the container is disconnected from the adapter so as to quickly prepare the gauge for testing a next container on a conveyor belt. Two embodiments of the adapter are disclosed, the first operating on the jet pump principle and the second operating on the Venturi tube principle. In both embodiments the adapter includes a fluid pressure inlet chamber connected to the fluid test pressure source and a fluid pressure outlet chamber which is selectively connected to either the container under test or to an ambient fluid pressure.

Abstract: A system is disclosed for detecting the leakage of fluid from a container by measuring the decay of an initial pressure input. The system employs an axially displaceable piston having a first surface exposed to fluid pressure within the container, and a second surface opposed to the first surface, having a first portion exposed to a reference gas pressure, and a second portion not so exposed. A gas jet has an inlet connected to a pressure sensing source and a sensing gas pressure detector with an outlet proximate to the second portion of the second surface of the piston. Changes in the relative magnitude of the fluid pressure within the container with respect to the reference gas pressure will cause the piston to alternately block and unblock the outlet of the gas jet, producing a low pressure gas signal. This device is termed the "monitor".

Abstract: A parts feeder is shown illustrated with a rotary type feeder having circular side walls in which the parts are picked up by a feed nozzle on the periphery of the side walls, and delivered to an induction ring assembly in which jets pneumatically transfer the parts into a feed tube which elevates the parts and delivers the same to a dispenser, the latter serving to drop the same onto counter rotating rollers for orientation. The counter rotating rollers are positioned over the rotary feeder so that parts not accepted by the same are dropped into the feeder for recirculation.

Abstract: A pneumatic amplifier is disclosed having a body, the body with two opposed heads, a sensor head, and a valve head. An air direction chamber is defined interiorly of the two heads and body, and is separated from the sensing chamber by means of a sealed piston. The piston is actuated at one side by means of back pressure on a jet orifice which is connected to a sensor supply, and the back pressure is translated into a movement of the flexible piston. In the valve chamber, a dart valve is actuated on one end by the piston, and its cone at the other end seats in a valve seat in pneumatic connection with the valve head. The valve head has a signal supply which, when not by-passed through the dart and its associated valve, passes out through a signal tube to actuate a signal device, whether ultimately pneumatic, electric, hydraulic, or other source of power. Optionally a diaphragm type piston is employed.