Abstract:
The present disclosure is directed to a bridge construction which submerges below the surface of a body of water so that the vessel passes over the bridge rather than under or between two raised sections. The side rail structure of the bridge is constructed to pivot along the major axis of the bridge so that upon submerging the bridge the side rail construction pivots and lies flat on the bridges transportation surface to (a) not interfere with the vessel which will pass thereover and (b) to provide a screen area to keep debris carried by the body of water from being deposited directly on the transportation surface. A buoyancy-gravity device is connected to the pivotally actuated side rails to cause the rails to be flat and cover the transportation surface when the bridge submerges and which device will cause the side rails to pivot to their erect raised condition when the bridge is raised to its surface condition which will cast any debris deposited upon the bridge during its submergence back into the body of water leaving a clear transportation surface top side of the bridge.
Abstract:
The present disclosure is directed to a dry feed mechanism employed in a shrimp feeder tank having an inclined endless conveyor in which a pair of rotary shafts having tines extending radially of and spaced along the shafts are mounted in a superstructure supported on the endless conveyor frame. One of the shafts is movable toward or away from the conveyor to regulate the rate of feed and to attain the desired distribution of shrimp over the upper run of the endless conveyor dependent upon shrimp size. The tines are curved and driven in a direction opposite to the travel of the conveyor to rake off shrimp at a predetermined level of conveyor feed.
Abstract:
The present disclosure is directed to a shrimp positioning pawl which has an undercut leading end, a counter weighted trailing end and a pivot axis fowardly of its center of gravity and which geometry is complemental to the dorsal side of the fifth and sixth shell segments of a shrimp to engage the moving shrimp with its leading edge at the 5-6 shell joint at their dorsal side to arrest the motion of the shrimp and position the shrimp individually at the condyle hinge breaking station with the joint between shell segments 5-6 positioned for the breaking of the condyle hinges therebetween and/or for proper positioning of the shrimp at a peeling station to insure peeling of only shell segments 1 thru 5 of the shrimp for the fantail market.
Abstract:
An automated butchering method and system for separating the edible loin portions of transverse tuna slices provided by subdivision of a frozen whole tuna. Each transverse slice of the principal loin bearing section of a frozen tuna is scanned to produce electrical signals representative of the boundary between the edible loin portions and the contiguous waste meat portions. Control signals can be derived from these electrical signals for government of cutting apparatus for precise separation of the edible loin portions along the detected boundary.
Abstract:
The present disclosure is directed to a load carrying trailer which is removably coupled to and transported within a shelter trailer wherein both are attached to a vehicle and pulled by a central draft beam on the first trailer, or if desired, trailered separable by means of secondary hitch; and because of their compactability, lend themselves to providing a mobile shelter for living within when arriving at a shelter site and permitting transport of a powered water-borne craft or motor vehicle on a load carrying trailer to and from the scene of recreational activity without having to disturb the shelter trailer.
Abstract:
Logic circuitry for use with a digital compass for providing an output indication of the difference between an actual and an intended course. Digital signals provided by a digital compass are processed in conjunction with a digital signal representation of intended course position to provide an output signal representing course difference and which can be employed by display or automatic pilot apparatus.
Abstract:
A magnetic compass in which the compass card and gimbal mounting are all located inside a sealed enclosure filled with damping fluid. The compass card is digitally coded and photoelectric means are provided for reading the card and generating a digital number corresponding to the rotational position of the card relative to the enclosure, corrected for local magnetic variation. Means are provided for comparing the compass reading with the corrected course reading to provide an error signal or an off-course alarm if desired.