Winch for sailing ships
OwnerMarc Reymondinventor
Life of this patent
Estimating the term…
Abstract
A winch or capstan primarily for tightening the sails of a ship and having a winch head driven always in one direction only at a selected one of four speed ratios. A planetary transmission and free wheel arrangement provide two of the speed ratios corresponding to clockwise and counter-clockwise rotation of a control shaft. A sprocket and chain arrangement drive by handwheels is housed in two casings mounted at one end of the shaft, the driven sprocket in one casing being moveable into dog-clutch engagement with one or the other of two gear trains coupled with the shaft to provide the two further speed ratios.
Claims11
A winch having a uni-directional rotary output and comprising:
- a housing, a control shaft rotatably mounted in said housing, drive means coupled with said shaft, a winch head mounted for rotation relative to said housing, and gear means coupled with said control shaft and with said winch head, said gear means being arranged to provide rotation of the winch head at a given speed ratio in one direction when the control shaft is rotated in a first direction and to provide rotation of the winch head at a relatively different speed ratio, also in said one direction, when the control shaft is rotated in a second direction opposite to said first direction, said drive means comprising a first rotary drive means, a second rotary drive means in driving engagement with said first rotary drive means, and pre-selectable first and second drive trains coupled with the shaft to apply relatively different speed ratios to said shaft, said second rotary drive means being selectively moveable into driving engagement with one or the other of said drive trains, said first drive train comprising a gear coupled to said shaft for rotation therewith, said second drive train including a gear idly rotatable on said shaft, said second rotary drive means being mounted for axial displacement relative to the shaft between positions of driving engagement with one or the other of said gears.
A winch comprising;
- a housing, a control shaft rotatably mounted in said housing, a winch head mounted for rotation relative to the housing, gear means coupled with said shaft and with said winch head, and drive means coupled with said shaft to rotate the same in opposite directions, said gear means being rotatable in opposite directions by said shaft and being constituted to provide unidirectional rotation of said winch head at different speeds corresponding to the direction of rotation imparted to the gear means by said shaft, and drive means comprising a first rotary drive means, a second rotary drive means in driving engagement with said first drive means, pre-selectable first and second drive trains coupled with the shaft to apply relatively different speed ratios to said shaft, and selector means for moving said second rotary drive means into selective driving engagement with one or the other of said drive trains whereby said shaft can be driven in opposite directions at two different speeds depending on the engagement of the second rotary drive means with the first or second drive train.
Dependencies are inferred from the claim text.