Abstract: Disclosed is a water sampler and method for dropping the water sampler from an airplane to obtain a sample of water from a body of water; the water sampler comprising a tubular member with ball valves at both ends and an open ended canister disposed between the ball valves, a line connected between the airplane and the tubular member for yanking the tubular member through and from the water, the yank of the line being used to move the ball valves from an initially open position to a subsequently closed position, the canister thereafter being capped and removed.

Abstract: Disclosed is a sheave assembly for supporting a downward extending cable wherein a plurality of rollers are disposed upward and outward in a staggered manner from a plane defined by a downward facing arcuate path along which the cable approximately passes and wherein each roller comprises a plurality of portions constructed, configured and dimensioned to conform to cables having different diameters and being composed of differing materials, if desired.

Abstract: Disclosed is a counter-balanced sheave assembly for supporting a cable comprising a plurality of sheaves mounted in an arcuate path on a support frame; counter-balancing weights positioned above the support frame and rigidly connected thereto; and a suspension arrangement, connected at the center of the assembly, for providing rotation of the assembly about two perpendicular axes of rotation; and sensors are provided for determining downward force on the sheave assembly and the angle of the cable by monitoring the number of pulleys rotating.

Abstract: A water sample collecting device for obtaining a sample of water at a predetermined depth consisting of a tubular member with ball valves at both ends and elements for maintaining the valves in a closed position when launched, opening the valves after the device is descending in the water to permit flushing of the device until the device has reached the desired depth when the valves are rotated to the closed position at which time the device containing the sample of water is brought to the surface.

Abstract: A current meter for measuring the velocity and direction of the water current comprising a housing, a support cable rigidly secured to the housing and appendages rotatably mounted at opposed ends of the housing and formed of a neutrally buoyant material. The appendages are formed from a single piece of the neutrally buoyant material which is attached to a pair of sleeves which are rotatably mounted to the exterior of the housing by a pair of ballbearing races.

Abstract: Disclosed is a multiple pulley sheave assembly for supporting a cable comprising a plurality of pulleys, including a center pulley, mounted in an arcuate path on a support frame; a pair of retainer pulleys for keeping the bend of the cable constant around the center pulley; a cable monitor coupled to the center pulley for measuring the tension, footage, and cable speed; counter-balancing weights positioned above the support frame and rigidly connected thereto; and a suspension arrangement, connected at the center of the assembly, for providing rotation of the assembly about two perpendicular axes of rotation, whereby the cable stays within a plane defined by the arcuate path.

Abstract: Disclosed is a counter-balanced sheave assembly for supporting a cable comprising a plurality of sheaves mounted in an arcuate path on a support frame; counter-balancing weights positioned above the support frame and rigidly connected thereto; and a suspension arrangement, connected at the center of the assembly, for providing rotation of the assembly about two perpendicular axes of rotation, whereby the cable stays within a plane defined by the arcuate path.

Abstract: Disclosed is a light saver device to be used in combination with a bayonet-type lamp and socket, wherein the light saver device comprises a pair of circular plate contacts having a diode mounted therebetween, three plastic insulating sheets being bonded together with the elongated plate contacts positioned between the sheets, an adhesive tape base mounted to the outer side of one of the sheets, and one of the sheets having a pair of tabs for securing the light saver device to a pair of pins extending from the lamp.

Abstract: Disclosed is a water sampler device for collecting a sample of water at a desired depth, the water sampler device comprising a tubular member having at each end a rotatably mounted ball valve, a valve pulley mounted on the exterior of the tubular member and coupled to the ball valve for rotating the same, a center pulley mounted on the tubular member between the valve pulleys, an endless belt positioned around the three pulleys, an electric motor coupled to rotate the third pulley, electric circuitry for activating the electric motor and then deactivating the electric motor to open the ball valves at a desired level and then subsequently closing the ball valve at a level whereat the sample is taken.

Abstract: Disclosed is an elongated housing containing a current meter for determining the velocity and direction of a current in a body of water, wherein the housing has a plurality of fins for flow stability and a connecting member joins the housing to a standoff framework, which in turn is fastened to an anchored line in the body of water.

Abstract: Disclosed is a water sampling device having a pliable container, a pair of rods attached to opposed sides of an opening formed in the container, a clutch assembly having a rotatable outer member and a rotatable core member with said rods attached thereto, a pull-down spring for urging the wing members to descend down the tubular member so as to unroll the pre-rolled container to expose the opening, a pair of wing members slidably mounted on a tubular member and operative to spread apart the sides of the initially deflated container, and a wind-up spring for rotating the rods to roll up and reseal the container.

Abstract: A countered-balanced sheave having a bracket with an eye bolt for suspending the sheave, a pulley rotatably mounted on the bracket with weights mounted on the bracket on each side of the eye bolt, the sheave consisting of a pair of circular members secured together, each of the members having a slot at its periphery forming a cavity for receiving a ring insert.

Abstract: Disclosed is a locking and sealing arrangement for a port light wherein a cover member has a pair of grooves formed therein; a cover mounting member has a groove formed therein; one groove of the cover member contains an O-ring for forming a water tight seal with the cover mounting member; the other groove of the cover member is aligned with the groove of the cover mounting member so as to form a channel, when the cover member is in place; and an elongated, pliable locking member is inserted in the channel to create a locking engagement between the cover member and the cover mounting member.

Abstract: A rotatable valve assembly for controlling the flow of fluids under pressure having a ball valve, a valve seat engaging the valve on opposite sides thereof, one of the valve seats being fixed and the other being movable; with fluid tight seals mounted on the valve seats and engaging the ball valve, the movable valve seat being responsive to the fluid under pressure whereby variation of fluid pressures will compel the movement of the ball valve toward and away from the fixed valve seat to provide a fluid tight seal therealong.

Abstract: A water sample collecting device for obtaining a sample of water at a predetermined depth consisting of a tubular member with spherical valves at both ends and means for maintaining the valves in a closed position when launched, opening the valves after the device is descending in the water to permit flushing of the device until the device has reached the desired depth when a messenger causes the valves to rotate to the closed position at which time the device containing the sample of water is brought to the surface.

Abstract: A combined housing and standard for measuring current velocity and direction in a body of water wherein the housing is tubular in shape in which an inclinometer is mounted and connected to the standard for vertical movement of the housing along the standard, the latter being mounted on a vertically disposed anchoring line. A pair of flexible fins is symmetrically mounted on the housing for positioning the housing in a plane parallel to the directional flow of the current while the housing assumes a vertical tilt proportional to the velocity of the current; the inclinometer registering the compass reading and angle of tilt from which information the direction and velocity of the current are ascertained.