Abstract: A differential mechanism of the holdout ring type is characterized by improved annular clutch plates with trapezoidally configured cam teeth for mating with the center cam teeth of the center cam. Each clutch plate has inner cam and outer clutch teeth extending from a planar surface thereof with a gap between the inner and outer teeth receiving a holdout ring. The inner cam teeth have a base wider than the top portion thereof so that there is surface to surface contact with the center cam teeth. This reduces torque in the clutch cam teeth and provides smoother operation and a longer service life to the differential.

Abstract: A vehicle transmission assembly includes a main gear box and an auxiliary or range gear box. An electrical actuation device for effecting changes in the range gear box preferably includes a solenoid actuator associated with each of the range gear members. A switch, which is preferably provided on the shift lever handle, allows the driver of the vehicle to indicate a desire to make a change in the range gear box. The solenoid actuators are responsive to the electrical switch to effect the range shift. The electrical components replace pneumatic components and associated fittings and airlines used with some prior systems. A further feature of this invention is to include a synchronizer protection circuit that disables the solenoid actuators unless prescribed transmission conditions are met.

Abstract: A striking tool has an elongated metal core having a bottom end for contacting a workpiece and an upper end for receiving the impact of a hammer or the like, and a plastic overlay secured around a substantial portion of the core, with at least a portion of the upper end of the core extending beyond the plastic overlay. The plastic overlay includes a grip area and a deflector flange extending a substantial distance outwardly above the grip area so as to protect a user's hand. The deflector flange comprises, in a first embodiment, a first deflector tier and a second deflector tier positioned below the first tier. Preferably, there are several angled ribs spaced radially around the plastic overlay, extending from the first tier, and then downwardly and outwardly to an outer edge of the second tier, to aid in deflecting errant hammer blows away from the user's hand.

Abstract: A reversible ratchet screwdriver, which includes a top handle shell and a bottom handle shell fastened together, a ratchet mechanism mounted inside the handle shells, the ratchet mechanism including a substantially triangular flat block, a long tube and a short tube formed integral with top and bottom sides of the triangular flat block and longitudinally communicated with each other, three pawls respectively coupled between the triangular flat block and a toothed portion at the bottom handle shell, and three spring elements respectively connected between the triangular flat block and the pawls to force the pawls into engagement with the toothed portion at the bottom handle shell, and a double-head socket for mounting with either of two ends thereof in the long tube or short tube to hold a double-head screwdriver tip outside the handle shells for turning screws.

Abstract: A ratchet wrench includes a handle, a housing attached to said handle, a ratchet gear mounted for rotation in said housing, the ratchet gear having an axis of rotation extending through the housing, and means connected to the ratchet gear for turning a threaded fastener. A pawl is mounted on the handle about a pivot axis that extends through the handle, the pawl pivoting among a first position in which the pawl permits unrestricted rotation of the ratchet gear, a second position in which the pawl engages the ratchet gear to prevent rotation of the ratchet gear in one direction, but allows rotation of the ratchet gear in the opposite direction, and a third position in which the pawl engages the ratchet gear to prevent rotation of the ratchet gear in the opposite direction, but allows rotation of the ratchet gear in the one direction. A method for turning a threaded fastener is also included.

Abstract: An adjustable jaw double ended wrench, where each set of jaws is gear operated. Each end wrench is adjustable, both individually and independently; the open end wrench driven by a spiral grooved shaft with beveled gears; the closed end wrench, linearly actuated by a direct driven spiral grooved shaft. At one end of the wrench is an adjustable open end wrench with a set of parallel jaws, useful in tightening or removing hex fasteners, such as hex and machine screw nuts, and cap screws. The other end, an adjustable closed end wrench for tightening or removing hex head cap screws, hex-head nuts, as well as for clutching other work. This wrench end is particularly well suited for use in areas that are blind to the user, especially in such applications as in automotive assembly and repair, ship inboard motor repair and numerous other applications of assembly and disassembly of items that may not be within the view of the user.

Abstract: A tool for multiple purposes including turning valve wheels, opening drum plugs and vents, driving sockets, turning screws, use as a drift pin and prying, among other possible uses, the tool having a handle and an exterior shank and an interior shank, each shank having a square cross section and being in a spaced relationship and parallel to one another located at one end of the handle, the opposite end of the handle having an edge and the handle being tapered, the interior shank which is located furthest from the end of the handle having an outer end with a reduced size set off center so that the wall of that shank toward the edge is aligned along the entire interior shank.

Abstract: The invention is a retaining device to secure a socket to an anvil of a pneumatic air gun. The retaining device comprises an O-ring, a projection, and a metal insert attached to the projection. The O-ring has a diameter and defines a plane. The projection extends inwardly from the O-ring along the plane of the O-ring. The metal insert comprises a near portion, a shoulder portion, and a far portion. The diameter of the near portion is greater than the diameter of the far portion. The far portion, the shoulder portion, and the shear-resistant portion of the near portion all have a solid metal core. The near portion has a hollow core extending from the solid core to a near end of the metal insert. The near portion has at least one aperture opening from the hollow core to the outside surface of the metal tip, and an external annular groove intersecting the aperture.

Abstract: A screw intended to be set in place and removed rapidly. The screw is characterized in that the threads are intended to take two positions: a first position wherein they project at the periphery of a body (1) and a second position wherein they are retracted into the thickness of the body (1). The screw further comprises a displacement member (27) intended to displace the threads from one position to the other and a device for locking the threads (29, 36, 27, 38) in the extended position.

Abstract: A power nutrunner includes a planetary reduction gearing (12) and a torque limiting release clutch (13) disposed between a ring gear (25) of the reduction gearing (12) and the tool housing (11), wherein the ring gear (25) is tubular in shape and has an outer annular shoulder (41) at its one end carrying cam teeth (42) for cooperation with a spring biased thrust element (45) via balls (43) and cam surfaces (44). The thrust element (45) encircles the ring gear (25) and is biased by a pretensioned spring (53) which is backed by an adjustable support (52) including a rotatable screw element (70) connected to the housing (11) and provided with gear teeth (74) to be engaged by a setting tool (80) inserted through a front opening (79) in the housing (11).

Abstract: An improved torque limiting screwdriver including a shaft extending from a first end of the screwdriver body, the shaft including a first indicia thereon, and an adjustment cap arranged to be located at a second end of the screwdriver body. The adjustment cap rotatable to selectively engage a selected detent located on the bottom of the adjustment cap. The selective rotation of the adjustment cap is aligned with indicia on a selected detent, indexing of both the indicia on the shaft and the indicia on the adjustment cap, providing an accurate specific torque value for the torque limiting screwdriver.

Abstract: A tool assembly includes a handle having an engaging hole for receiving the bar of a tool member therein, the handle having a plurality of concavities defined in the outside thereof and a plurality of longitudinal recesses defined therein so that each of the concavities receives the bar of the tool member and each of the longitudinal recesses receives the bit of the tool member. A passage is defined in the handle and communicates with the engaging hole so that when the bar of the tool member is tightly engaged with the engaging hole, a rod is inserted into the passage to push the bar out from the engaging hole.

Abstract: A tool block and holder for metal working lathes, comprising, a tool block having a tool channel extending therethrough sized to receive snugly a collet holder with a collar at its proximate end serving as a stop against the tool block, and first coolant channel that communicates a fluid coolant from a source external to the tool block to the tool channel at a point beyond the distal end of the collet holder; a collet sized to be received snugly within the collet holder and having a hollow interior and a nose at its proximate end with an opening sized to receive the shank of a metal working tool and having male threads at its distal end; and a draw nut having a proximate end sized to be received snugly within the tool channel, female threads at its proximate end sized to receive the male threads at the distal end of the collet, a flange at the distal end of the draw nut serving as a stop against the tool block, and second coolant channel in fluid communication with the first coolant channel and the hollow int

Abstract: A new type of multi-chopper for cutting strands or ribbon shaped material such as strands of glass fibers, and a method of using this chopper, is disclosed. The chopper has at least two chopper assemblies on a rotating frame. When one chopper assembly needs repair, the frame is rotated which brings a rebuilt or repaired chopper assembly into operating position quickly and also brings the assembly needing repair into a position where it can be worked on while the other chopper is operating resulting in much reduced downtime. The frame of the chopper can rotate around a vertical or horizontal line, or around a line passing through two opposite corners of a frame.

Abstract: Scroll saws produce an accumulation of sawdust or other debris removed from a workpiece during operation of the saw. This debris can block the operator's view of the cutting path of the saw. An improved device and method for removing accumulated debris from the cutting path of a saw blade is disclosed. A bellows is described, comprising a bellows section having an accordion-like structure and a flexible stem having a passage through which air may pass. The bellows may be manufactured as a single piece using a blow molding process to achieve greater structural integrity. A scroll saw having a bellows for removing debris and a protective cover for use with the bellows is also described.

Abstract: A magnetic cutting assembly and waste removal system is provided for cutting a panel from an envelope blank or the like. The die holder has a magnetic outer surface and a plurality of surface orifices therein radially communicating with corresponding feed tubes for supplying vacuum or air to the surface and into the vicinity of the envelope blank. In order to maximize the number of orifices while minimizing the number of magnetic members, the magnetic members are disposed in a plurality of rows wherein each row contains alternating magnets and orifices and a row of orifices are disposed between each adjacent row of magnets, and the orifices are connected to corresponding feed tubes in a matrix.

Abstract: An improved throat plate is disclosed herein. The throat plate includes a main body, an opening in the main body for allowing a cutting tool to extend therethrough, and a retainer assembly attached to the main body for retaining the throat plate in contact with the table. Preferably the retainer assembly is pivotally attached to the main body and/or is movable between a first position contacting the table and a second position bypassing the table. The retaining assembly may pivot about an axis substantially perpendicular to a plane of the table. The retainer assembly may also include an extension that contacts underside of the table. The extension in turn may include a camming surface contacting the underside of the table.

Abstract: The present invention provides a carriage reciprocating mechanism permitting easy reversal of the traveling direction of a carriage without changing the rotating direction of a motor or the traveling direction of an endless belt, and without rotating of the carriage itself, when the carriage reaches the end point of travel. The carriage can reverse the traveling direction thereof at the end point of travel by movement in only one direction of an endless belt stretched between a driving pulley arranged at one end of the frame and a follower pulley arranged at the other end thereof. Particularly, a reciprocating mechanism of a sheet-cutting device may have a carriage or a tool post provided allowing movement across a sheet to be cut relative to a frame. A rotary blade of the sheet-cutting device is supported by bearings on the tool post.

Abstract: A punching device for punching an aperture in a sheet includes a housing and a handle pivotally joined to the housing with a first pivot connection. A drive plate is slidably displaceable in the housing. The drive plate includes a protrusion extending from a surface. The drive plate is preferably pivotally joined to the handle with a second pivot connection remote from the first pivot connection. A punch is disposed in the housing and operably engages the protrusion of the drive plate such that displacement of the drive plate in the housing causes operation of the punch.

Abstract: The invention resides in a method of providing a barrier in an environment comprising the steps of providing a structural member which is part of the environment; providing a flexible foam coated fine mesh material capable of being folded on itself and providing said mesh material with a means for securing said mesh material to a structural member in said environment and securing said mesh material through said means to said structural member to provide a barrier between one environment and another.

Abstract: A variable displacement compressor includes a swash plate supported tiltably on a drive shaft and slidable in axial directions of the drive shaft. The swash plate has a central support hole into which the drive shaft is inserted. The swash plate has a top dead center point for positioning the piston at a top dead center position and a bottom dead center point for positioning the piston at a bottom dead center position. The center of gravity of the swash plate is displaced from the axis of the drive shaft toward the top dead center point. This location of the center of gravity maintains the radial position of the swash plate relative to the drive shaft by centrifugal force acting on the swash plate when the swash plate rotates. As a result, the compressor is quieter and more stable.

Abstract: A brewer device for brewing single servings of a beverage, while also functioning as a cup closure lid. The lid includes a filter assembly to hold a brew substance, such as coffee grounds, a lip to secure said device to the mouth of a cup, and a frangible tab to allow consumption of the beverage without removing the lid. To enhance the aroma of the beverage while it is being consumed, the brew substance is held on top of the lid just below the position of the consumer's nose. Other brew substances, such as tea, cocoa, bouillon, etc., may be used.

Abstract: A cooking apparatus for alternately cooking, broiling, or grilling foods in a single vessel. The apparatus includes a bottom pan portion which is supported by a lower frame portion. An upper frame is pivotally supported from the bottom pan portion. A top portion is provided, wherein the top portion is pivotally affixed to the upper frame. The top portion includes a reversible combination lid portion and a grille portion. The grille portion of the top portion is the inner wall surface of the lid portion, and is thus located in the upper reaches of the lid portion when the lid portion is in a cooking position. When the top portion is rotated one hundred eighty (180) degrees, the grille portion provides an upwardly exposed grille surface for food preparation. The top portion is shaped suitable for nesting in the bottom pan portion when the upper frame is returned to a normal, grille cooking position.

Abstract: The invention concerns a device for heating and/or cooking food comprising: a steam generator producing steam for heating or cooking food; a cooking container receiving a removable cooking basket provided with through apertures arranged in the proximity of the base to allow the steam through. The container being reversibly sealed at its upper end with a removable lid. The removable lid is provided with a through aperture to allow the steam generator to communicate with the container inside, and particularly the cooking basket inside. The container is provided with a through aperture arranged substantially near the top end of the wall defining it.

Abstract: A multipurpose roaster is mainly composed of a frame, fixtures and a skewer, wherein two side board have a slanting sliding guide from up gradually decent with a recess and a seat at the bottom end of the sliding guide, the fixture has a hole and a bolt for a skewer to insert there through and secured by bolt thereat, or to accommodate a grid cage or a pan thereto, and slide along the sliding guide into the roaster.

Abstract: An apparatus for separating outer layers or shells from the internal seed of plant matter comprises a plant matter inlet (12), a seed outlet (14) and a generally vertical separating chamber (16) interposed between the inlet and outlet. The separating chamber is cylindrical and includes a plurality of axially spaced apart inwardly facing nozzles (18) and a plurality of spaced apart apertures (20). The apertures are a size smaller than the seeds being separated to allow only the outer layer or shells to pass therethrough. A separating chamber includes a plurality of inclined to horizontal baffles (21) to increase the residence time in the plant matter in the chamber.

Abstract: An aluminum can crushing mechanism includes a support base which has a pair of support members extending from it. Situated between the support members is a pair of compacting plates. The compacting plates utilize a pair of alignment rods, one plate having the alignment rods affixed therewithin and the other plate being functionally adapted to be movable along the alignment rods. Rotatably affixed to the movable plate is a handle member which, when rotated from a generally upwardly extending position to a downward position, causes the compacting plates to move towards each other thereby compacting an aluminum can located between the compacting plates. When the handle member is rotated upwardly, the compacted can drops out from the mechanism without further handling of it.

Abstract: A flywheel quill with thrust plate and axial rotor guiding. Bronze thrust plates are attached to the hub of a flywheel and hydrostatic pads secured to the frame of a press are adjoining the bronze thrust plates, such that axial motion of the flywheel with attached thrust plates is limited and reduced.

Abstract: A rigid container for transporting flexible sachets of bio-pharmaceutical fluid having a volume of 50 liters or more has a bottom wall and one or more lateral walls. At the top it has a contention plate for the sachet adjustable in height to compress the sachet.

Abstract: The stencil printing apparatus of the present invention is provided with a stencil making section for perforating each stencil sheet with a desired image pattern, a porous structure printing drum incorporating an ink supply mechanism and coming to have a stencil sheet perforated in the stencil making section to be wound thereon, a sheet supply section for supplying print sheets, a roller for pinching the print sheet supplied from the sheet supply section between the printing drum and itself, and time counting means for counting the rest time of the stencil printing, apparatus.

Abstract: For the production of a printing stencil, a fine-mesh screen is provided with an unexposed photoemulsion layer and aligned in order to establish it in an essentially tubular or flat shape On the photoemulsion layer, those locations which are not to be exposed are covered with an opaque layer according to a particular pattern. The opaque coating layer--together with the non-exposed portions of the photoemulsion layer--is removed after the exposure of the non-covered locations of the latter. The opaque coating material contains wax and preferably is soluble in water. To avoid a perceptible starting line in the case of a tubular screen, the pattern start is varied according to any law, preferably following a sine line, in order to avoid a clear-cut separating line.

Abstract: A master making device of the present invention includes a support member supporting a stencil roll such that a stencil can be paid out from the roll. A thermal head perforates the stencil paid out from the roll while a platen roller rotates while pressing the stencil against the head. The support member, thermal head and platen are constructed into a master making unit. The master making unit is removably mounted to the body of a printer via rails. A broader space than is conventional is available for the stencil to be set or replaced or for a jam to be dealt with without a document reading section being displaced relative to the printer body.

Abstract: A stencil perforating device including a stencil roll holding unit (11) for rotatably holding a stencil roll (16). The stencil roll holding unit has at least one identification mark (11A10, 11A11) which corresponds to at least one identification mark (P1, P2) of the stencil roll (16).

Abstract: A cylinder in a rotary printing press is inked with a highly viscous printing ink. An open ink duct is provided with a doctor blade that is supported negatively on the cylinder. A reserve of printing ink is added to the ink duct and is formed into an ink roll. A regular and intensive inking of the cylinder results with only very low ink circulation.

Abstract: An ink metering device and method. Ink is fed at a pressure to an orifice. Pressure may be achieved by either an ink pump or a gravity feed. The size of the orifice may be varied according the conditions existing in the printing press. The pressure at which the ink is fed may also be varied. Ink exiting the orifice is fed onto the surface of an ink applicator roll. At a location downstream of the orifice, a control blade is positioned adjacent the outer surface of the ink applicator roll. The distance between the tip of the control blade and the outer surface of the ink applicator roll may be varied using a control blade positioning mechanism. The distance between the tip of the control blade and the outer surface of the ink applicator roll controls the smoothness and/or the thickness of an ink film which is created on the surface of the ink applicator roll. This film is transferred directly to the image or plate cylinder, which is in contact with the outer surface of the ink applicator roll.

Abstract: A system for making printing plates for newspaper, which can make, with great efficiency, replacement printing plates to be used when a printing face of the printing plate mounted on the plate cylinder of the rotary press is to be changed in part. The plate-making system is built by linearly arranging in series a plate feeder 2, an exposure unit 3, and a developer 5 so that the exposure unit 3 may directly form images on the printing faces of a plate material 12 in accordance with image drawing signals from a computer to make a printing plate P large enough for at least several pages.

Abstract: A method and software program for determining printability of a defect on a reticle or photomask onto a substrate during processing. That is performed by creating a pixel grid image having a plurality of individual pixel images showing the defect. A gray scale value is assigned to each pixel image of the pixel grid image and a probable center pixel of the defect is selected. Then the polarity of the defect is determined, with a coarse center pixel of the defect optionally selected using the probable center defect and polarity of the defect. If a coarse center pixel is selected, then a fine center of the defect can optionally be selected from the coarse center pixel and polarity of the defect. From the center pixel the physical extent of the defect can be determined followed by the determination the transmissivity energy level of the physical extent of the defect.

Abstract: A web-offset printing press is provided with a first rotatable printing cylinder adapted to print a first image on a web by applying a heat-settable ink to the web, a second rotatable printing cylinder adapted to print a second image on the web, the second image being printed on the web subsequent to the first image being printed on the web by applying a heat-settable ink to the web, a drying station for drying the heat-settable ink applied to the web by the first and second rotatable printing cylinders by heating the web to an initial temperature, and a cooling station disposed adjacent the drying station, the cooling station receiving the web after the web has been heated by the drying station, the cooling station causing the initial temperature of the web to be reduced by at least about 20.degree. F.

Abstract: System for attaching and separating satellites which comprises an open ring or metal band (1) which has a channel formed in its inner perimeter, in which jaws are integrated in a discontinuous way, which can slide in the said channel, two end pieces (5) fixed to the ends of the said ring, a tensioning bolt (4) which joins the two end parts, and three supports for retaining the ring (1) which are fixed to the structure of the launcher (3) of a satellite (2). The invention can be applied to artificial satellites of any weight and size.

Abstract: In order to fill an inflatable safety restraint device such as an air bag, a relatively small pyrotechnic charge is used to pressurize a chamber of water or other suitable liquid and force the liquid out of the chamber and through a conduit in a manner wherein it is caused to intimately mix and atomize in a high speed stream of gas resulting from the combustion of the pyrotechnic charge. The heat of the combustion gas is absorbed by the liquid which is then converted into a large volume. The vaporized liquid and combustion gas is used to inflate the air bag with an essentially non-toxic, low temperature, low particulate atmosphere. The resulting combustion gas and liquid mixture may also be used to extinguish a fire.

Abstract: The improvement in a control circuit for the operation of pneumatically propelled vehicles consists of a propulsion duct formed by a guideway (1) and power propulsion units (3) with flow control valves (4) located at intervals along the guideway (1). Atmospheric valves (2) are located at specific points along the guideway (1), opening and closing the duct to the atmosphere, and the section isolation valves (6) are positioned in such a way as to isolate adjacent blocks of the guideway (1) and at the same time to maintain the functioning of the propulsion circuit in the other blocks. The atmospheric valve (2) is coupled to an aperture (11) in the guideway (1) and consists of a butterfly valve.

Abstract: The subdivided bellows of a connecting element is provided between two articulated vehicle components. The halves of the bellows are coupled at their ends to a vehicle component, and a middle frame (1) has a device for guiding supply lines (100), e.g. tubes, cables, etc., in a ceiling area of the connecting element which is movable relative to the middle frame (1).

Abstract: A manway cover assembly to cover an opening of a tank car, defined by an upstanding manway nozzle. The manway cover assembly comprises a manway cover housing, a safety vent and a manway nozzle gasket. The safety vent includes a body mounted on the manway cover housing. The safety vent further includes a surge protector and a rupture disk. The rupture disk is designed to open at a known pressure and allow controlled venting of the pressure in the car. The manway cover housing defines a bore which contains the surge protector of the safety vent. The manway cover housing includes a tube extending downwardly and surrounding the surge protector.

Abstract: A collapsible massage table includes two folding table pieces hingably connected to each other so that when the table is set up it has four corner regions. Each corner region is supported by a leg that is connected to the table via a folding link. Each link has a cable portion that stabilizes the link in an orientation directed toward the ground when the table is set up.

Abstract: A table for accommodating the components of a computer, particularly of the type known as personal computer. The table comprises a working surface, which is supported by legs, and has a first compartment which is designed to accommodate the fixed components of a computer. The controls of the computer, which is recessed in the compartment, and the slots for accessing the reader/writer/recorded units, are arranged in the front edge of the table, thus leaving the entire working surface uncluttered.

Abstract: A freestanding support for supporting a worksurface and an overhead storage unit and the like in an open office environment includes at least three legs where each leg has a bottom portion adapted for resting on a floor, a top horizontal support adapted for receiving and supporting a worksurface on the support, and a vertical support which maintains the bottom portion and the top horizontal support in a fixed vertically spaced relationship. A stretcher extends between and is attached to an upper rear portion of the end legs thereby maintaining the two end legs in a parallel horizontally disposed relationship. The freestanding support also has at least two support posts. One support post has an intermediate portion attached to the stretcher and is positioned substantially in alignment with one of the end legs and further has a bottom portion attached to the vertical support of the end leg.

Abstract: A divisible shipping platform apparatus for supporting and transporting loads, in which the apparatus is easily divided into multiple independent shipping platform units for subsequent transporting and handling loads. The divisible shipping platform apparatus comprises a platform member separated from a bottom panel member by a series of pylons. The platform member and bottom panel member are constructed with one or more frangibility lines dividing the platform member and bottom panel member into divisible regions. Inasmuch as those frangibility lines and divisible regions are substantially aligned, independent shipping platform units may be separated from the divisible shipping platform apparatus upon exertion of a force on the divisible regions and, in turn, the frangibility lines.

Abstract: An apparatus for preventing the emission of dioxins in an incineration facility including an incinerator having a boiler, and an exhaust gas treatment facility for treating exhaust gas discharged from a flue of the boiler. This apparatus further includes a steam supply pipe for supplying steam into a water tube or a downcomer of the boiler from an auxiliary boiler or another steam-generating source, a flue damper for opening and closing the flue of the boiler, a detector for detecting the temperature of gas within the boiler at a point disposed upstream of the flue damper, and a damper control device responsive to a temperature, detected by the detector, for opening and closing the flue damper.

Abstract: A hook system for a sewing machine having a hook assembly with a first operating axis, a bobbin basket assembly which is mounted to the hook assembly for movement relative to the hook assembly around the first operating axis, and a bobbin case assembly which is mounted on and separable from the bobbin basket assembly and defines at least a part of a receptacle for a bobbin. The bobbin case assembly has a peripheral wall extending around the first operating axis and a confining wall extending from the peripheral wall. The peripheral wall and confining wall have a combined mass. At least 50% of the combined mass of the peripheral wall and confining wall is made from a non-metal material.

Abstract: Apparatus for raising and lowering boats in water. The apparatus consists essentially of at least one float that is attached to the hull of the boat and is guided along the surface of the hull of the boat at least partially below water level when a force is applied to it. Preferably at least two floats that are permanently or displaceably attached to the apparatus support in the longitudinal direction and are provided on the side of the support which is intended to accommodate the hull of a boat. The entire device is designed so it is adjustable in height and is connected to a stationary land-based mooring point with an articulated joint. This device is especially reliable for raising a boat out of the water and docking the boat above the water line without risking canting. This result is possible in an inexpensive and very simple manner with the invention. The usable width of the entire device is greatly reduced from previously known such devices.