Abstract: Apparatus is disclosed for permitting variable adjustment of the float position for a bobber or other float device on a fishing line. The apparatus includes the combination of a friction coil attached to the line and movable thereon, and a bead having a hole diameter large enough for freely passing the line therethrough, but smaller than the size of the friction coil.

Abstract: A trap for crustaceans capable of being knocked down to basic parts occupying a small volume and easy to assemble in little time. Also, sturdy enough to withstand handling, ship movement and underwater currents but at the same time being biodegradable in order to prevent it from becoming a perpetual crustaceans killing trap in the event that the buoy breaks off.

Abstract: A convertible doll house is provided which includes first and second house sections each of which has perpendicularly extending wall and floor panels. The house sections are positioned, in a first relative position, with their wall panels pivotally connected adjacent to each other and with their floor panels lying in substantially the same plane, thereby to form a one-story doll house. One of the house sections includes a stilt for supporting it in a second pivoted position with respect to the other house section so that its wall panel extends perpendicularly to the wall panel of the other section, in spaced vertical relation to the floor panel of the other section, thereby to form a two-story doll house.

Abstract: An ornithopter having a pair of flexible fabric wings which are flapped in unison by an elastic motor-operated crank assembly to support the ornithopter during flight. A flexible generally U-shaped member is mounted on the front end of a longitudinal rigid base. A pair of rigid wing struts are pivotally mounted on the tips of the U-shaped member and extend outwardly transversely with respect to the longitudinal base. The crank assembly has a reciprocating lever which is pivotally connected to the inner ends of the wing struts between the spaced tips of the U-shaped member. Rotation of the crank by the elastic motor reciprocates the lever up and down pivoting the wing struts on the tips of the U-shaped member which simultaneously flex inwardly and outwardly, enabling the wings to flap in unison. A flexible spline extends upwardly forwardly from the rear end of the base. A flexible fabric is attached to the wing struts and spline and extends toward the rear of the base to form the pair of wings.

Abstract: A toy flying object consists of a single wing which is shaped and weighted to provide aerodynamic capabilities. The single wing structure is readily and simply manufactured.

Abstract: A fluid suction device is disclosed. The device comprises a cylinder, a piston mounted for sliding movement into the cylinder, a shaft secured to the piston at one end and having a longitudinal bore therein communicating with the cylinder, a suction head secured to the outer end of the shaft and having a longitudinal bore in communication with the bore in the shaft spring means surrounding the shaft for biasing the suction head away from the cylinder, and means for moving the shaft into the cylinder against the action of the spring to create a vacuum at the tip of the suction head to draw fluid into the suction head.

Abstract: A solar greenhouse wherein plants are grown and utilized as collectors to absorb solar radiation and produce heat laden humidified air through the process of evapotranspiration. This humidified air is then further heated by solar energy. Energy is then extracted from the humidified air by cooling the air and condensing the water vapor within the air. The extracted heat can then be stored and utilized as required to heat the greenhouse and plants.

Abstract: An admission and/or egress control structure for separating two areas and regulating the passage of human traffic between the two areas including a barrier adapted to be disposed between the two areas to be separated, at least one turnstile in the barrier through which unassisted ambulatory humans may easily pass from one area to the other, at least one gate in the barrier extending to the bottom thereof through which nonambulatory and assisted ambulatory humans may easily pass from one area to the other, hinges mounting the gate for movement between open and closed positions relative to the barrier, springs normally and yieldably urging the gate towards the closed position, a lock for normally locking the gate in the closed position, and a control for the lock to unlock the gate from the closed position so that nonambulatory and assisted ambulatory humans may move the gate against the springs to the open position to pass easily therethrough to move from one area to the other without traversing either the bar

Abstract: A pair of left-end and right-end clips which are each installed with a pop rivet to the left-end portion and right-end portion, respectively, of an existing glass panel of a jalousie or louver. The installed clips each overlaps a panel mounting bracket to prevent the removal of the panel for stealthy, illegal entry into a building. The clips can also be used to secure the panel when the existing brackets are broken.

Abstract: An apparatus and method for clamping louvered window panes in the window frame sections of a louvered window structure. The louvered window structure usually includes a plurality of pivotably movable pane supporting elements which have elongate slots to receive the panes. The apparatus comprises a clamping device in the nature of a band having a pair of overlapping terminal portions, which form an envelope section and this band is capable of being disposed over a portion of each window pane supporting element and a portion of the pane which extends beyond the slot formed in the pane supporting element. An individual clamping device is located at each of the opposite ends of each or certain of the window panes. The clamping device includes a locking mechanism which is capable of causing locking engagement of the two terminal portions of the band, such that the clamping device can be clamped about the window frame section and the pane to lockably hold the pane in the window frame structure.

Abstract: Machine for edging and bevelling ophthalmic lenses comprising guide means r forming a small bevel on the edge of lenses having a relatively thick edge, said guide means comprising a guide member connected to the frame of the machine by means of a pair of links forming a parallel-link motion device, a pair of springs constantly urging said links to a stable position in which their longitudinal axes form a predetermined angle with the axis of the rotating spindle which supports the lens to be bevelled, a bearing member supported by a movable carrier for said spindle and urged for engagement with said guide member, one of the guide member and bearing member comprising a bar extending at right angles to the spindle axis and provided with coupling means capable of preventing any relative movement between the guide member and the bearing member in a direction at right angles to the spindle axis. The adjustments of the machine for forming the small bevel art thus greatly simplified.

Abstract: The present invention relates to an apparatus and a process for a gear processing machine operating according to the screw rolling process principle and with positive control of the movement of a rotating tool in the prearranged toothing of the workpiece rotating with respect to the tool.

Abstract: A channel formed vibration abrasive container with a channel surrounding, in a non-circular longitudinal course, a centrally disposed vibration generator, to which channel there is coordinated a selectively operative discharge- and separation- device. The channel course comprises two 180.degree. curved arcs disposed opposite each other at a distance, which arcs are arranged in symmetrical position relative to the vibration generator and are connected with each other by two parallel extending linear channel sections.

Abstract: A steady rest follower for a workpiece comprising a frame supporting a slide which is movable in directions toward and away from the workpiece. A pair of vertically spaced support wheels are mounted on the slide for engagement with the workpiece. A pair of springs yieldably urge the slide rearwardly away from the workpiece and into engagement with the peripheral surface of an eccentrically configured roller member that is mounted on the frame. During the machining of the workpiece, the eccentric roller member is rotated to move the slide against the pressure of the springs toward the workpiece so that the support roller members are maintained in continuous engagement with the workpiece as the size of the workpiece is reduced.

Abstract: A portable cutting-tool sharpener comprising a compact housing of the box-type, having a central enlarged portion and two aligned, straight sections extending from the opposite sides of the enlarged portion; two parallel frame plates secured in one of the aligned straight housing sections; electric motor received in the enlarged housing portion; a first pulley keyed to the shaft of the electric motor means; a second pulley keyed to a driving roller journalled between the parallel plates, adjacent to the electric motor means; a driving "V-belt" connecting the first and second pulleys and an idle roller journalled on a fork slidingly supported between the parallel plates at the ends thereof remote from the electric motor means; and an endless abrasive band mounted around the idle roller and the driving roller and driven by the latter, arranged longitudinally between the parallel frame plates; at least a length of the endless abrasive band being exposed to allow sharpening of cutting tools by the moving endless

Abstract: In a process for treating surfaces by means of a jet of liquid impinging on the latter at high velocity and with which, in particular, scouring or polishing solid particles, such as steel granules, corundum, sand, chalk or the like are admixed, the liquid jet is, after it has impinged on a surface to be treated, at least once returned to a surface to be treated for the purpose of exploiting the residual kinetic energy of the liquid. In a preferred form of the invention, the jet impinges on the surface at an angle of between 30.degree. and 80.degree. and is, after reflection from said surface, returned to the latter to impinge thereon at an angle of between 40.degree. and 90.degree.. In a particular embodiment of the invention, a sheet metal strip is guided along a loop and the jet impinges on a concave region within said loop.

Abstract: A transportable stand construction system generally comprised of a plurality of seat modules. The system includes a support frame, support means on the support frame to be spaced from and normally parallel to a surface on which the system rests, and a floor-carrying member which is part of the seat module. Connecting means are arranged adjacent a rear end of the floor-carrying member and are locatable on the support means to position the rear end of the seat module substantially horizontally. The front end of the floor-carrying member is arranged to be supported directly by the surface beneath the system or by support means of a further support frame to be arranged at a lower level than the support means of the first support frame. The system also normally includes modular step members to provide gangways spaced at predetermined distances by a series of the seat modules.

Abstract: A gutter and hanger arrangement for a building includes a hanger with a flashing section for anchoring to a roof, a fascia section for overlying a portion of a building vertical wall and a hanger flange joined to the fascia section and having elongate corrugations for slidably attaching a gutter thereto. The gutter includes a bottom wall joined to inner and outer side walls and forming a trough therebetween, the juncture of the bottom wall and the inner side wall comprising an abutment surface for engaging the building vertical wall below the flashing section. The inner side wall is spaced laterally from and extends upwardly of the abutment surface and has a corrugated gutter flange extending generally downwardly in spaced relation to the inner side wall and terminating adjacent the abutment surface to form a passage for sliding the hanger flange longitudinally into interengagement with the gutter flange. The corrugations interlock and inhibit upward movement and disengagement of the gutter from the hanger.

Abstract: Disclosed are modular, multi-floor buildings wherein each floor comprises a plurality of semi-boxes which are cast from concrete as independent, rigid units and which are basically rectangular in shape, comprising mutually perpendicular walls but no floor or ceiling. The semi-boxes are arranged between horizontal concrete slabs, which function as both floors and ceilings, and a plurality of vertical posttensioning tendons pass through the semi-boxes and the slabs to bind the building together.

Abstract: A roof structure of the type having a plurality of wooden beams whose sides are provided with mortices for receiving end edges of roofing panels. The invention improves the strength of the structure by employing a generally zig-zag or corrugated cross-section by arranging the mortices such that at least a major portion of each mortice extends at an acute angle with respect to the elongation of the beam, which generally corresponds to the direction of wood grain. The invention thus provides the advance of an increased strength of the structure as compared with prior art which is typical by the mortices being generally straight and/or parallel with the elongation of the wood grain which normally corresponds to the elongation of the beam.

Abstract: A soffit system includes a plurality of panels of individually adjustable length, in a side-by-side nested array supported on at least two spaced-apart stringer members. Each adjustable panel has at least two similar components, an end portion of one being inserted in an end portion of the other so that the two components overlap. Each component has a horizontal web and two parallel side flanges with conformingly curved profiles opening in the same direction, i.e. one flange being externally concave and the opposite externally convex. The side flanges of the overlapped components snap fit together to interlock their overlapping end portions, thus providing the adjustable-length feature.

Abstract: A leak-free, insulated basement window assembly which includes a prefabried panel comprising an insulating member and impact resistant strip joined to the insulating member. The panel has a pre-cut opening which is adapted to be aligned with a window opening in a masonry basement wall. A plastic window unit, which serves as an insulating membrane, is inserted into the opening with the window unit being located adjacent the outer basement wall.

Abstract: Disclosed is a closure combination for pressure vessels comprising a carrier cover in contact with a sealing cover for covering and closing an opening in a pressure vessel by contact with a flange member of a liner element disposed within the opening in the pressure vessel and sealed by a sealing means in communication with the flange member and the sealing cover.

Abstract: A composition comprising a granular inorganic oxidic material other than glass powder and 1 to 30 weight percent, based on the weight of said material, of glass powder, especially a composition additionally containing a hardenable thermo- or cold-setting phenolic resin, which composition does not disintegrate at high temperatures and retains compressive strength.

Abstract: A four corner joint between wall panels of the type comprising outer and inner skins connected by an insulating core, and having marginal connecting means formed along the opposite longitudinal edges of the outer skin. The outer and inner skins and the core co-terminate at the upper ends of the lower wall panels. The outer skins of the upper wall panels have lapping ends which extend downwardly beyond the lower ends of the upper wall panels and which overlap the wall panels. The marginal connecting means are substantially entirely removed along the length of the lapping ends of the upper panels to preclude interfering with the interconnection of corresponding marginal connecting means in the lower wall panels.

Abstract: A composite roof panel comprising inner and outer skins which are connected in shear-transferring relation by an insulating core. The outer skin presents marginal connecting means, a first of which is adapted to receive and to be bent, i.e., closed, about a second connecting means of an adjacent panel to provide a standing seam connection at the exterior face of the roof structure. During closure, the first connecting means is bent in one direction and experiences only minor bending stresses. Hence, a large number of different types of decorative coating materials can be applied to the outer skin. The inner skin presents complementary mating elements which provide a connection between adjacent panels at the interior face of the roof structure. Means adapting the panel to be erected in end-to-end overlapped relation and in side-by-side interlocked relation is disclosed.

Abstract: Disclosed is a shingle having an enhanced relief effect which thereby simulates roofing slate or roofing tile. The enhanced relief effect is provided by covering at least a portion of the underside of the shingle with a layer of expanded particulated material such as spheres of expanded polystyrene. The shingle further includes a stiffening layer over the layer of expanded particulated material which tends to reduce the elasticity of the shingle.

Abstract: A particleboard web member interconnects a pair of wood chord members by means of glued tongue and groove joints to form an I-beam or roof truss. A pair of grooves in each chord member receives a pair of parallel tongues on the web member. The grooves are inclined from top to bottom to bend the tongues out of parallelism and form self-locking dovetail-type joints which hold the members together in assembled relation without the use of external clamps while the glue is setting.

Abstract: There is disclosed a coin wrapper discharge assembly for use with a coin wrapping apparatus that momentarily stops a coin roll to change its direction, and senses the presence of loose coins. The assembly includes a chute disposed beneath a coin wrapping apparatus that accepts coin rolls falling downwardly after being wrapped. The chute directs a coin roll laterally from its original downward direction into a V-shaped trap. The trap is formed by an inclined floor and a swingable door. A solenoid is provided to hold the door in its normally closed position until actuated by a paper feed mechanism in the coin wrapping apparatus. When actuated, the solenoid releases the door to allow a trapped coin roll to fall onto a conveyor for removal to a packaging point. In addition, the door is electrically insulated from the floor and chute to provide a pair of electrical contacts that are bridged by loose coins to complete an electric circuit that disables the coin wrapping apparatus.

Abstract: A vacuum-suction typed holder for flexible tube-shaped film materials made from plastics wherein the tube-shaped film materials whose upper end open and the bottom is sealed are fed thereinto and they are rendered to expand by suction applied from the periphery thereof, in order to facilitate to put, for example, sausage therein.

Abstract: Containers such as those used for food stuffs having a generally frusto-conical initial shape are constrained into a forming die during the handling of the containers for injecting quantities of edibles and the like therein such that the containers are constrained to enter a die having a generally square configuration and then, while still in the die, the containers are filled with food or other material and a square lid is fed into position above the filled container and placed thereon to maintain the square configuration of the upper end thereof. The resulting containers provide a much more efficient packaging for equal volumes of product when compared with the more conventional frusto-conical shape containers. The invention is particularly well-adapted to packaging ice cream and the like.

Abstract: Disclosed herein is a self-propelled lawn mover including apparatus selectively operable to start the mower motor and a cutter blade drive mechanism selectively connecting the motor in driving engagement with the cutter blade, the cutter blade drive mechanism being movable between a first drive mechanism position wherein the motor is drivingly engaged with the cutter blade and a second drive mechanism position wherein the motor is disengaged from the cutter blade. A wheel drive mechanism is also provided for selectively connecting the motor in driving engagement with the wheel to propel the mower. A starter interlock is provided for preventing starting of the motor unless the cutter blade drive mechanism is disengaged from the motor and the wheel drive is in a neutral position, the starter interlock operably connecting the cutter blade drive mechanism and the wheel drive to the apparatus selectively operable to start the mower motor.

Abstract: An improvement to a harvesting machine where the harvesting machine comprises a substantially horizontal elongate cutter comprising a cutting member mounted in association with a base member for relative longitudinal reciprocatory action of one with respect to the other. The improvement comprising a feed device consisting of a plurality of elongate planar strips of flexible resilient material mounted at one end and in spaced relation along the elongate cutter to reciprocate along an axis parallel to the elongate cutter. The strips being mounted such that their plane is substantially perpendicular to that of the cutter and they extend rearwardly of the cutter, wherein the free end of the strip can swing freely with the reciprocation of the cutting member to sweep material cut by the cutter rearwardly from the cutter.

Abstract: An optical cable is assembled by inserting dielectric optical waveguides into periodically reversing helical grooves in the surface of a central filament. The invention is concerned with minimizing longitudinal tension in the waveguides. Powered rollers draw dielectric optical waveguide from fixed reels and delivers it, in a slack condition, to a guide unit which is mounted by means of a thrust bearing. The guide unit supports rods with apertures at their ends through which dielectric optical waveguide is guided, the rod ends being disposed within the grooves so that respective dielectric optical waveguides and grooves are maintained circumferentially coincident. Cable is drawn downstream of the guide unit to pull the filament and dielectric optical waveguides together at the guide unit and also to reciprocally drive the guide unit. As the filament, with dielectric optical waveguides positioned in its grooves, exits the guide unit, it is helically wound with tape.

Abstract: A method is provided for making metal cords to be used as reinforcing elements in elastomeric structures which comprises arranging the wires in groups with the wires of each group being arranged coplanar and side by side, permanently deforming the wires by bending to wind the wires in a regular and uniform helical arrangement, with the helexes of all the wires having the same geometrical characteristics. The resulting cord is free from residual tensions which might loosen the mutual strand.

Abstract: In a false twisting apparatus in which the yarn to be twisted passes between parallel, rotating shafts carrying axially spaced friction disks which radially overlap disks on the other shafts, the yarn-engaging circumferential faces of the disks are surfaces of rotation about the shaft axes and arcuately connect respective radially extending, axially spaced end faces of the disks, each face having a yarn feed region and a yarn delivery region, the regions being annular about the axis of rotation and axially juxtaposed, the yarn feed region consisting essentially of aluminum, zirconium, or titanium oxide and having a surface roughness greater than the surface roughness of the yarn delivery region.

Abstract: Parking meter comprising a visible means, a first time measuring device which switches the visible means off after a given parking period and a second time measuring device which renders the visible means unusable after a predetermined parking time which is many times longer than the given parking period.

Abstract: A gas turbine engine drive for a marine propeller having a forward and reverse drive transmission having controls operative during engine operation in a braking neutral position to decrease engine inertia and to brake the input and engine and also the output and propeller prior to shifting to either a forward or reverse drive to reduce shift shock, and a positive neutral position to positively disconnect the input and output so the engine can drive accessories without driving the output and propeller, and operative when the engine is not operating to brake the input and engine and also the output and propeller. In another control, the reverse drive signal decreases engine inertia in braking neutral.

Abstract: A gas turbine engine has an inlet compressor with a stepped centrifugal impeller and a double diffuser therefrom controlled by valve means and operative to supply air to combustion apparatus from when motive fluid is directed through a turbine to drive the compressor. The turbine may drive the load or a second power turbine in series with the compressor drive turbine can be included. The discharge from the double diffuser is controlled to vary the mass flow of the engine for operation at idling and under light loads and operable to be completely open for higher power output of the engine.

Abstract: An improved structure is provided for liquid cooling a transition member which conducts hot motive gases from a combustor to a turbine inlet in a gas turbine power plant. The liquid-cooled structure includes a transition member body having a longitudinal inlet manifold and a longitudinal collection manifold attached to opposite sides of the body. The body has a plurality of internal laterally disposed passages which communicate liquid coolant from the inlet manifold, around the body to the collection manifold. The liquid coolant transfers heat from the member in a circumferential flow pattern; then the coolant is discharged from the member by a discharge manifold which is connected to the collection manifold. The method of manufacturing of the transition member provides for forming the body in two mating half subassemblies having internal coolant passages. Each half of the body is blanked from a flat sheet having a shape conforming to the developed shape of the body.

Abstract: A gas turbine engine combustor assembly of unique configuration has an outer wall made up of a plurality of axially extending multi-layered porous metal panels joined together at butt joints therebetween by a reinforcing and heat dissipation ring and a unique weld configuration to prevent thermal erosion of the ends of the porous metal panels at the butt joints; the combustor further including a unique inner wall made up of a plurality of like axially extending multi-layered porous metal panels joined at butt joints by a reinforcing and heat dissipation ring on the inner surface of the inner wall panels and an improved butt weld joint that prevents thermal erosion of the ends of the porous metal inner wall panels.

Abstract: A gas turbine engine combustor assembly has an outer annular porous laminated wall and an inner annular porous laminated wall joined at one end thereof by an annular load support dome plate that closes one end of the combustor; peripheral extensions on the inlet end of each of the inner and outer walls are directed outwardly of a combustion zone to define a flame isolated connection surface on both of the laminated walls of the combustor and wherein connection means are provided to connect the dome plate to the connection surface to define inner and outer annular sealed joints at the combustor dome without blockage of coolant flow through the inner and outer porous laminated walls to maintain full cooling of the flame exposed inner surfaces of the inner and outer laminated walls and wherein the connection means are maintained out of direct flame exposed relationship with an interior combustion zone within the combustor.

Abstract: An exhaust port liner for an internal combustion engine is formed of thin wall heat resistant material and is provided with an entrance opening at one side to receive exhaust gases discharged from an engine combustion chamber. A poppet type valve which closes against a stationary seat has a portion which extends through the entrance opening of the liner and also through an aperture in a wall of the liner. This aperture may also receive a portion of the valve stem guide and the liner may be fixed to the valve stem guide in the region of said aperture. The liner has a discharge opening and a support flange supporting the liner encircles the discharge opening. A peripheral layer of heat insulating material may be provided on the liner and this heat insulating material may be confined within a shell forming a part of the liner.

Abstract: A method and apparatus for insulating the exhaust passage of an internal combustion engine is disclosed. A three-zone liner assembly is provided with an outer zone comprised of a room temperature vulcanizing silicone sleeve, an inner zone comprised of a stamped and seam welded high strength Al--Cr--steel alloy, and an intermediate zone consisting of a ceramic wool mat. The liner assembly is supported or enclosed within a mild carbon sheet metal sleeve which in turn may be bonded to the engine passage wall by use of a room-temperature-vulcanized silicone if of the insert type, or by fusion bonding during casting if of the cast-in-place type.

Abstract: A vehicle drive system including a rotary output, variable displacement, hydraulic motor (22) adapted to drive a wheel or the like, a pump (10) for providing hydraulic fluid under pressure to the motor, a pressure control valve (30) connected to the motor for regulating the displacement thereof to achieve a desired system pressure and having a pressure responsive surface (34) receiving a signal representative of system pressure and a biasing spring (36) acting in opposition thereto. The invention contemplates the improvement wherein a variable, settable, pressure reducing device (60,106) is connected to the pump and to the pressure control valve to apply hydraulic fluid under reduced pressure to the pressure control valve in bucking relation to the system pressure signal.

Abstract: An improved hydraulic pump structure for hydraulic systems which require a plurality of rotary pumps has a pump casing assembly (20) consisting of a plurality of pump casing elements (23-29) which are fastened together in abutting relationship to define a first pump cavity (54) and a second pump cavity (55a) with aligned drive shaft holes (56-61) and a drive shaft (62-63) which is journalled in the holes (56-61) and carries a rotary pump member (76-77 or 80-81) in each cavity (54 and 55a). The casing elements (23-29) are manifolded to provide a first fluid inlet passage (82), a first fluid delivery passage (84) which terminates in a port in a fluid delivery end plate (29), a second fluid inlet passage (86) which has an entrance opening (H6) in the fluid delivery end plate (29), and a second fluid outlet passage (87) which terminates in a port in the fluid delivery end plate (29).

Abstract: A prime source of mechanical power comprising an expansion chamber, an inlet into which expansible fluid is injected, and an outlet through which said fluid is exhausted after expansion in said chamber. Expansion of the fluid is achieved by application of a heat source directly to the expansion chamber, which expansion acts through a piston to create useful mechanical motion. The engine is preferably of a reciprocating type, while the heat source can be solar, gaseous, petroleum, nuclear, or electrical.

Abstract: A Stirling Cycle machine having a cylinder mounted in a housing has a displacer reciprocably mounted in the cylinder. Also reciprocably mounted in the cylinder is a piston and passages are provided in the cylinder so that when the displacer moves in one direction, a cooled gas will be drawn into the cylinder between the displacer and the piston, and when the displacer moves in the opposite direction, a heated gas will be drawn into the cylinder to thus provide expansive gas forces working against the piston thus causing the piston to be driven in its power stroke when the machine is utilized as an engine. The piston is drivingly connected to a crankshaft and the displacer is driven by a crankshaft, which is in rotative synchronism such that the displacer movement in the cylinder in the direction to draw heated air into the cylinder overlaps in time a substantial portion of the piston power stroke.

Abstract: An engine apparatus is adapted to operate upon partial immersion in a heated liquid in a liquid reservoir. A movably mounted frame is mounted to a fixed frame and located adjacent the liquid reservoir in a manner that heat exchangers attached to the movable frame are successively passed into the liquid of the liquid reservoir. The heat exchangers are connected in pairs on opposite sides of the movable frame and contain a low boiling point liquid therein. Each heat exchanger of each pair is connected to the other through a pair of drive cylinders, so that the expansion of the fluid in the heat exchanger passing through the liquid reservoir and the simultaneous contraction of fluid in the heat exchanger that has left the reservoir expands and contracts the drive cylinders to operate the engine. The engine will operate from a low temperature heated liquid such as may be provided by solar panels or water heat from power plants.

Abstract: A vehicle brake booster and master cylinder assembly has a vacuum suspended booster section which is controlled by movement of the vehicle brake pedal. A hydraulic booster section is in series with the vacuum suspended booster section, and a master cylinder unit is in series with the hydraulic booster section. The assembly is so interconnected that the master cylinder can be operated manually when there is no or insufficient power pressure to operate either booster section. It may also be operated by actuating the vacuum suspended booster section, and, when no hydraulic pressure is available to the hydraulic booster section, this operation may be followed by manual actuation. It may be operated by initially actuating the hydraulic booster section when there is no vacuum available for initially operating the vacuum suspended booster section, followed by manual actuation as needed.