Measuring and testing – Navigation – Ship's log
Patent
1984-08-31
1986-08-05
Frankfort, Charles
Measuring and testing
Navigation
Ship's log
116 621, G01P 504
Patent
active
046035796
ABSTRACT:
A trolling speed indicator adapted to be mounted to the gunnel of a boat along either a vertical or horizontal surface. The indicator measures the speed of the boat during trolling so that a fisherman can utilize the optimum lure size and weight. The indicator generally comprises a L-shaped flange which is mounted to the boat gunnel, a pointer fixedly secured to the flange and indicating means rotatably secured to the flange. The indicating means comprises a velocity scale attached to an annular disk. A tubular rod is attached at its first end to the annular disk while the second end of the rod is submerged in the water and is influenced by the force of the water as the boat moves across the water. The mounting means permits simple removal of the device and a clip, which is also mounted to the gunnel, allows the tubular rod to be stored out of the water.
REFERENCES:
patent: 2617297 (1952-11-01), Moore
patent: 3871219 (1975-03-01), Quick
patent: 4295367 (1981-10-01), Leslie
Burr Edward A.
Shaum Richard L.
Corr Denis E.
Frankfort Charles
Schaum Richard L.
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