Abstract: The present invention relates to a marine vessel winch equipped with hermetically sealed clutches including: a support plate on which a plurality of support frames is disposed; a rotary shaft rotatably coupled to the support frames; a rope drum having a first fixing clutch mounted on one side thereof; a chain drum having a second fixing clutch mounted on one side thereof; a first moving clutch and a second moving clutch coupled slidably movably to the rotary shaft and selectively engaged with the first fixing clutch and the second fixing clutch; and sealing members having one side surfaces coupled in circumferential directions to predetermined positions of the outer peripheral surfaces of the rope drum and the chain drum and having the lower portions of the other side surfaces brought into contact with the outer peripheral surfaces of the first moving clutch and the second moving clutch.

Abstract: The invention relates to a drum winch (100) that is arranged to allow “free fall” of an anchor secured by rode to a drum (116) of the drum winch (100). The drum winch (100) includes a mounting bracket (112) and a drive shaft (114) arranged to be mounted to the mounting bracket (112) and coupled to the drive unit (118). The drum (116) is arranged relative to the drive shaft (1114) so that in a first mode of operation of the drum winch (100), the drum (116) can be rotated by rotation of the drive shaft (114). In a second mode of operation of the drum winch (100), the drum (116) is free to rotate relative to the drive shaft (114) so as to enable “free fall” of the anchor. The drum winch (100) further includes means for actuating (150) either the first mode of operation or the second mode of operation.

Abstract: A winch includes a first cable reel and a second cable reel. A driveshaft rotates the first cable reel and the second cable reel. The driveshaft is moveable along an axis of rotation between a first position and a second position. The driveshaft operationally engages the first cable reel when in the first position and operationally engages the second cable reel when in the second position.

Abstract: A chain block with a drive motor (2) with a motor shaft (11), which is connected at the take-off side via a slip clutch (50) to a transmission input shaft (14), having a first gear (18a) and mounted in a housing (1) by pivot bearings (13, 13a), of an at least one-stage transmission (3). In order to create a simple design of chain block with a slip clutch, the transmission input shaft (14) is to be mounted floating in the pivot bearings (13, 13a) in order to change the frictional force of the slip clutch (50).

Abstract: A method and apparatus for retrieving golf balls from a submerged surface includes a power drive device which is stationed along the shore of the submerged surface of a golf course water hazard and which carries a pair of spools on which flexible line is wound. The flexible line on one spool is connected directly to a golf ball retrieving mechanism, and the line from the other spool is connected around a pulley on a deadman stake on the opposite side of the submerged surface and is then connected to the golf ball retrieving device. Accordingly, the golf ball retriever is moved along the submerged surface toward and away from the opposite shores of the water hazard by alternatively driving one of the spools and permitting the other spool to unwind. The power drive device is moved incrementally along the shore surface after each sweep of the golf ball retriever so that golf balls may be retrieved from all of the submerged surface.

Abstract: Improvements in marine winching apparatus and method for use in conjunction with oyster dredging, shrimping, and similar activities in the fishing industry with regard to two, four, and five drum winches as used in the fishing and marine industries. The improvements relate to the overall compact compartmentation and configuration of the device, as well as new innovative improvements in the clutch mechanism, the split collar, wear plates, cleaves, shaft, and other aspects of the mechanism of the winch, which will vary depending upon the contemplated use. An exemplary embodiment and design for a winch specifically designed for oyster dredging, in which the winch includes a new and unique configuration, including the incorporation of a "dredge post" implemented in the construction of the winch for safer and more efficient dredging of oysters, is disclosed.

Abstract: A handling apparatus for a measuring instrument for the inside of a nuclear reactor has a pair of take-up drums each having a wire rope wrapped around it. A measuring instrument is secured to one end of each of the wire ropes. Each take-up drum rotates together with a corresponding drive wheel to raise or lower the measuring instrument by means of the cable. The take-up drums and the drive wheels are connected to a single motor by a gearbox equipped with a clutch which enables power to be selectively transmitted to either of the take-up drums and the corresponding drive wheel.

Abstract: Drawworks transmission shifting apparatus is described that provides an arrangement of control valves, cylinders, clutches and brakes which permit the rig operator to shift the drawworks transmission into the desired setting and to lock the transmission in those positions by the use of remotely controlled pneumatically powered cylinders.

Abstract: Imaging apparatus of the kind in which successive image portions of a length of strip material are sequentially imaged and developed, features a development device adapted to provide continuous development periods of equal duration for all image portions, regardless of intermittent operation of said apparatus. One disclosed embodiment features guide means sequentially movable at the strip-feed rate between a first position, constraining all strip portions that are within the development zone in a developing relation, and a second position wherein all such strip portions are released from the developing relation.

Abstract: Separate torque converters are selectively clutched to the hoist and drag drums of a dragline machine with a selectively engageable clutch providing a power interlock of the output of both torque converters to either one of the drums as desired. The application and control of torque from the two torque converters to the hoist drum is in parallel and to the drag drum is in series progressive, i.e., the drag converter being engaged first and going from zero to maximum while the hoist converter goes from zero to about fifty percent of capacity as the drag converter reaches maximum. The reserve torque in the hoist converter may be selectively applied to the hoist drum to step the drag bucket up if the drag drum approaches a stall condition. The hoist converter may also be selectively engaged to apply a predetermined hold back force during bucket lowering. Another clutch may be engaged to interlock the two drums together for joint operation by the hoist converter.