Abstract: A recess in a workpiece is honed by a honing tool that is reciprocated in a succession of strokes back and forth in the recess as it is rotated about an axis of the recess. The stones of the honing tool are pressed by at least one hydraulic cylinder against the workpiece with a pressure that is incrementally increased after each stroke. To this end a pilot-controlled primary pressure-limiting valve is connected between a pump and the cylinder, and a plurality of multiway valves can connect any of a plurality of differently preset secondary pressure-limiting valves to the pilot port of the primary valve. The cylinder piston can have a pair of unequal effective faces each exposed in a respective cylinder compartment so that during a first operation stage both compartments are pressurized to the same extent for differential action and during a second operation stage only one of the compartments is pressurized.

Abstract: A propeller grinding device and method employs two endless grinding belts which are transported past a grinding station to finish the front and back surfaces. A propeller blank is inserted between the belts and the belts are distorted by platens, each of which includes a plurality of independent platen vanes. Two cams selectively bear upon two camming surfaces of the vanes and move the vanes into desired positions corresponding to the surface contours to be formed on the front and back surfaces of the propeller blades. The cams are rotated as the blade is moved. They also may be moved along the camming surfaces. Additionally, the cams and platens may be moved parallel to the direction of cam rotation with respect to the belts. SUBACKGROUND OF THE INVENTIONThe present invention relates to grinding devices and, more particularly, to a grinder having an endless grinding belt capable of grinding contours, such as the airfoil shape of a propeller.

Abstract: A portable abrading tool having a shoe mounted for straight line reciprocating movement relative to a body, and driven by a reciprocating piston in the body through two spaced gear units, with a counterweight being driven by those gear units to reciprocate essentially with the piston and oppositely from the shoe, and with the counterweight desirably having two enlarged end portions and an intermediate reduced width portion carrying oppositely facing toothed racks engaging the two gear units respectively. The counterweight is desirably confined vertically between the body of the tool and the reciprocating shoe, and is slidably located within recesses in the under surface of the body.

Abstract: A portable abrading tool with a rotary backing unit for carrying a disc of abrading material, with abraded particles being drawn through a passage or passages in the backing unit into a shroud carried at a rear side of that unit, and with the backing unit carrying a circular rib at its rear side projecting rearwardly within a peripheral edge portion of the shroud in axially overlapping relation to define a shoulder blocking centrifugally induced radially outward movement of abraded particles toward the edge portion of the shroud.

Abstract: An adjustable shelf system for installation in combination with a non-load bearing wall which does not require penetration of the wall for support is disclosed. The adjustable shelf system is particularly well suited for use in combination with non-load bearing walls of the type supported intermediate a building foundation and an upstanding load bearing frame which includes a top track member having channels for receiving studs and prefabricated wall panels. Shelves are supported on brackets which are attached to laterally spaced, upstanding tubular support legs having a channel formed within one side wall portion. A cushion strip is confined in the channel intermediate the upstanding tubular support legs and the non-load bearing wall thereby preventing abrasive contact of the tubular support legs against the adjacent wall paneling.

Abstract: A folding dome-like modular building structure composed of 48 flexibly interconnected equal right isosceles triangles. Each building structure is formed from a series of four flexibly connected modules of 12 triangles each. The modules are connected in alternating right and left-handed mirror image sequence. Each triangle may be a rigid panel or an open space enclosed by struts or panel edges. The structure may be formed in part from struts and in part from panels. It may be an open or partially open framework or it may be enclosed by fabric or film supported over or suspended from the framework.

Abstract: A structural weathertight enclosure for conveying systems and the like includes an outer shell having a pair of spaced apart, opposite sidewalls formed of one or more sheet metal panels joined in end-to-end relation. Each of the sidewall panels includes a pair of preformed, flange structures along upper and lower edges, and the upper flange structure includes a downwardly and outwardly sloping eave, a reverse turn and an upwardly and inwardly sloping roof segment. The lower flange structure includes a reverse turn, an upwardly extending inside flange and an inwardly extending floor section.The shell includes one or more roof panels having a raised central ridge portion with a pair of downwardly and oppositely outwardly sloping roof sections adjoined along outer opposite edges with the sloping roof segments of the upper sidewall flange structures. One or more floor panels are provided with the opposite outer edges joined to the floor sections of the lower flange structure of the sidewall panel.

Abstract: A construction element of good thermal conductivity, designed for example as a facing for a heated or cooled floor or ceiling, comprises a board pressed from organic, mineralic and/or ceramic particles adhesively bonded together, with a metallic filler distributed therein. The filler may consist of powder, chips and/or filaments and may be supplemented by a metallic grid or foil embedded in or laminated to the board. One or more conduits for a heating or cooling fluid can pass through the board, preferably in a region of high filler density.

Abstract: An electrical equipment cable trough system for use with electrical equipment panel installations and providing internal retaining members defining a cable way having a cable-insertion space extended between the upper and lower extremities of each panel. Additionally, U-shaped header troughs are attached to the upper extremity of each panel with U-shaped cross-troughs extending between parallel groups of abutting panels. The interrelation between adjacent header troughs and cross-troughs permit a single panel to be removed from a group while continuing to provide support for the interconnected conductors carried by the trough system.

Abstract: A load-carrying building structure, particularly ceilings and floors, comprising an assembly of prefabricated box-shaped components made from appropriate non-viscoelastic material like wood, steel and concrete. The box-shaped components are held together to form a rigid structure by means of tensioning members, a plurality of rods made from high quality steel arranged in at least two crossing directions. The rods are positioned and tensioned to such a degree that the tensile stresses in the structure due to dead load and live load are entirely eliminated by the compression stresses brought to the structure by the tensioning members. The mentioned boxes are thin-walled with a ratio between length: thickness of at least 30:1, and the ratio between depth:length is between 1:1 and 1:4.

Abstract: A system for protecting an enclosed space from the effects of above- and below-normal temperatures comprises means defining an enclosed space including at least one relatively large opening, a screen-like cover over said opening containing numerous smaller openings which have been closed over with a water-removable composition comprising a water soluble, heat transfer resistant organic polymeric coating.

Abstract: A tolerance adjustment device maintains tolerances in the assembly of building panels. The tolerance adjustment device comprises a panel section which is aligned with an end edge of one building panel. An adjustment bolt moves the panel section toward and away from the end edge of the building panel to form a variable length extension of that panel which compensates for tolerance variations along the length of an assembly of the building panels.

Abstract: A sectionalized structure of preformed wall panels especially adapted for use as base for burial in the earth for mounting above-ground electrical equipment such as sectionalizing cabinets, transformers, electrical switch gear boxes, and similar equipment connected to underground utility cables. The base is preferably formed from precast concrete modular form panels which are adapted for assembly at the installation site. The wall members terminate in beveled vertical edges which abut to form mitered corners. Clamping fastening means engaging the mitered corners secure the base wall panels in rigid geometrical configuration.

Abstract: A window grille set of pre-fabricated tubular members of a uniform cross-section having flat top, bottom and side walls which are provided with means for their joinder in crossed relation to form a self-sustaining grille assembly in which said members serve in the manner of window sash mullions to provide it with multiple light openings. The mullion-like members are provided with interlocked cross-lapped joints at each point where they cross one another and where said members are angularly related to provide diamond-shaped "lights" the opposite ends of each contiguous pair thereof are held together in miter-jointed relation by a spring-biased clip inserted into the hollow mitered extremities of said paired members. In its assembled form the grille is designed to be installed as a unit and hermetically sealed within the space conventionally provided between the spaced panes of thermal insulated window sashes.

Abstract: The invention is primarily directed towards a splice for fastening together metal furring strips which are mounted to a ceiling. Ceiling tiles are placed adjacent the metal furring strips and staples are driven through the ceiling tiles into the metal furring strips to mount the ceiling tiles in position.

Abstract: A tile, generally used for roofing purposes, made of metal or synthetic material, has two portions, one portion has a convex upper surface and another portion has a concave upper surface. These portions are integral with each other and do not overlap one another. The underfaces of these portions exhibit cavities thereat. The length of one of the portions is greater than the length of the other portion. When laid upon a roof area the ends of the tiles will be made to overlap a predetermined length of the tile to give the appearance of a roof formed with conventional spanish mission tiles. Adjacent or contiguous tiles are interlocked by means of a curled corner of the other portion of the tile.

Abstract: A building constructed from free standing precast stress bearing will modules by placing the elements in a trench, pouring a flowable material therein, and allowing the flowable material to set. Metallic elements extending from the wall into a recess in the bottom of the wall interconnect with the flowable material in the trench to form an integral unit of the set flowable material and the wall module. For subsequent stories, the free standing precast stress bearing wall modules include a pocket in their lateral wall to provide access to the interconnection for the fastening of a plate embedded adjacent the bottom thereof and a rib extending from the top of a lower building element.

Abstract: A one-piece sheet metal fastening device for securing two work panels together. The device incorporates a split shank joined at its lower extremity, a split head and a laterally extending locking region at the lower extremity of the shank. The shank includes means to preassemble and rotationally align the fastener within an aperture in a first panel so that a second panel can thereafter be associated with the lower locking region of the fastener.

Abstract: A method and apparatus for pressure packaging of articles between a heated thermoplastic film and a substrate utilizes apparatus providing a bed platen, means for heating a thermoplastic film, means for supporting the film above the bed platen and a pressure platen having a recess in the lower surface thereof adapted to receive the article being packaged. The pressure platen and bed platen are moved relative to each other so as to deform the heated thermoplastic film into a sheath about the article and to press the heated film against the substrate outwardly of the article to effect bonding therebetween. The pressure platen desirably has a release coating thereon to prevent adhesion of the heated film thereto. Vacuum may be drawn through the bed platen and the substrate to enhance bonding of the film to the substrate.

Abstract: A motor control circuit for controlling the operation of an electric lawnmower comprising an operator sensor responsive to the bridging of first and second operator contacts mounted on the lawnmower handle to provide a motor actuate signal and a power control circuit responsive to the motor actuate signal to connect the blade motor to a power source.

Abstract: The disclosure is of a machine of mower or mower-conditioner type in which the working width is substantially equal to the total width and a drive element directly communicates its rotating movement to one of the discs mounted on an elongated housing which supports all the discs, of which that which co-operates with the drive element can advantageously be uncoupled therefrom.

Abstract: A tine for an agricultural implement such as a haymaker is made of tubular material such as spring steel through which extends a flexible core such as a steel wire cable which is anchored to the tine ends by local indentations at each tine end.

Abstract: A device for retransporting a thread end of a take-up coil to a withdrawal tube of a spinning machine, includes a two-armed suction tube with a suction nozzle, the suction tube being pivotally mounted and being formed with a bend in a plane wherein it is pivotable, the suction tube having a longitudinally extending slot formed on the inside of the bend for passage of a thread therethrough and into the suction tube under suction, the suction tube having a suction-air flow path extending from the suction nozzle at an end of one of the suction-tube arms through the one suction-tube arm and through the other of the suction-tube arms to the end of the other suction-tube arm and therefrom through an air guidance part to a union for a negative-pressure suction source.

Abstract: A mobile type auto-doffer for ring spinning machines and the like consists of a doffing device and a donning device with mechanisms similar to those of a doffing device. The operation for doffing full bobbins may be carried out by utilizing the doffing device, and the operation for donning fresh bobbins may be carried out by utilizing the donning device. During the doffing operation, a plurality of full bobbins is simultaneously transported from the spindles to the pegs disposed between the spindle rail of the spinning machine and the surface of the floor of a spinning plant. During the donning operation, the same number of fresh bobbins as that of a full bobbins is simultaneously transported from the pegs to the spindles. Both of the above-mentioned ways of transporting bobbins may be carried out by moving the full bobbins or the fresh bobbins along separate vertical passages, respectively, i.e., one passage being disposed farther from the row of spindles than the other passage.

Abstract: There is disclosed a variable denier, multifilament yarn having a slub yarn plied with a carrier yarn and displaying high weaving performance. The yarn is characterized by a certain slub size distribution, a certain minimum number of slubs, a specified maximum number of large slubs, less than one tight spot per meter and a coherency factor of from about 4-14, said coherency factor increasing as the number of large slubs increases. A process for making the yarn is also disclosed and includes the features of feeding both feed yarn and carrier yarn to a supply jet, the feed yarn being overfed while the carrier yarn is maintained under zero net overfeed, forwarding the carrier yarn to a slub jet and forwarding the feed yarn to a foraminous surface where slubs are created and thereafter combining both yarns and passing them sequentially through a slub jet, at least one interlacing jet and, optionally, a torque jet.

Abstract: The invention is related to a process for the production of staple-fibre-like textured continuous filament yarns by interlacing and false-twisting, wherein a partly drawn filament is heat-treated before the texturing process, this filament is subsequently interlaced with a non shrunken filament and both are finally subjected to draw texturing.

Abstract: False twisting apparatus including opposing rotary discs between which a yarn is clamped is provided with a device for supporting the rotary discs to be movable in the axial direction toward and away from each other and is also provided with a member for urging the rotary discs to form a small gap therebetween.

Abstract: An electronic battery-powered watch including an oscillator followed by a chain of frequency divider stages, said chain being composed of two parts with an interface circuit between said two parts, said interface circuit multiplying by a predetermined amount the voltage of the battery and the amplitude of the pulses issued from the last stage of the first part of the division chain in order to feed and control the second part of the chain and the decoding and display circuits of the watch.

Abstract: A timing device for accumulating a telephone long distance call charge. It is basically a modified stopwatch, and must be used in conjunction with a push-button calculator incorporating the "automatic constant" function. The stopwatch has been altered so that a specially-designed piece of plastic or metal, replacing the second hand, forces a pin through the bottom of the casing, once per revoluton (i.e. once a minute). This pin depresses the "automatic constant" key, thereby adding the pre-programmed cost of the call for that minute to a running sub-total. A spring brings the pin back to its original position, and the cycle is repeated, unless stopped.

Abstract: A shackle for chains, especially sling chains, which includes a shackle stirrup and a shackle bolt. In closed position of the shackle. The shackle bolt is located in aligned bores provided in the legs of the shackle stirrup and is held in the said stirrup by means of at least one securing member. At least one end section of the bolt extends between the legs of the shackle and has a cross section which is smaller than the cross section of the bores in the legs of the shackle stirrup.

Abstract: A gas turbine engine includes a compressor having a plurality of fixed diffuser passages therein each including a gate and associated cam ring control means for operating each of the gates either open or closed to vary the gas flow through the compressor diffuser for turbine engine control; the gas turbine engine further includes a turbine section having a plurality of turbine nozzle passages each having a separate gate therein selectively operated under the control of cam ring means to vary the amount of motive fluid to the turbine in accordance with desired engine operation and wherein each of the gates are operative with respect to either the diffuser or the nozzle passages to change the area of gas flow therethrough by blocking some or all of the channels without resultant change in incident angle of the gas flow with respect to the inlet of each of the passages.

Abstract: A transfer valve for a gas turbine fuel system by which to transfer fuel flow from the main control to the back-up control without allowing fuel flow transients in excess of the mismatch between the two controls.

Abstract: A gas turbine engine comprises a casing defining a duct for a thrust producing gas, the casing is divided into an upstream and a downstream portion movable between a normal position form a continuous duct and a thrust reversal position in which the two portions are separated by a gap. A plurality of thrust reversal doors are pivotally connected at or towards one end thereof to the downstream portion and a number of struts and pivotally connected at or towards one end thereof to the upstream portion, the thrust reversal doors and the struts in the normal position and as the upstream and downstream portions move towards the thrust reversal position, extending downstream to leave the duct unobstructed thereby.

Abstract: An arrangement for mixing fan air and engine gas in an engine augmenter which includes transition ducts for diverting some of the fan air into the engine gas annulus, the ducts having vortex generators to create secondary flows that will improve mixing and permit use of shorter augmenters.

Abstract: An augmenter construction for fan engines in which the fan air and engine gas are distributed through transition ducts terminating in vortex generators and the fuel rich pilot gas discharges into diffusers downstream of the vortex generators to mix with the vortices within the diffusers for improved combustion.

Abstract: An augmenter construction for fan engines in which the fan air and the engine gas are distributed through transition ducts terminating in vortex generators and the fuel rich pilot gas discharges around these vortex generators to mix with the vortices for improved combustion. The transition tubes have diffuser sections extending from the vortex generators and these sections have rectangular or multisided terminal ends.

Abstract: The invention improves the regulation of the composition of the exhaust gases in the case of engines having a plurality of rows of cylinders each of which rows is associated with an exhaust pipe. For this purpose, small-section pipes respectively lead from the exhaust pipes and have a common junction at which the analyzing probe is located. This junction is connected to the exhaust manifold preferably by way of a pipe which serves also to heat the induction pipe of the engine.

Abstract: A device for deriving power from the energy of moving water waves includes a bag of flexible, impervious and inelastic material filled with a liquid to at least half but less than full capacity thereof and being adapted for submergence below the surface of a body of water parallel to the principle direction of movement of the waves. A passageway element having open opposite ends is in communication with the interior of the bag and forms together therewith a closed circuit flow as the liquid is channeled between opposite ends of the bag in a direction opposite the principle direction of movement of the waves. An electric power generator with turbine blades thereon is disposed between opposite ends of the passageway element.

Abstract: For tractors or like machines which can be provided, upon assembly, with either a hydrostatic transmission or a mechanical stepped-speed transmission, a transmission housing having a removable cover is provided. The machine has a drive shaft and a driven shaft and, according to the invention, a hydrostatic transmission is mounted intact upon the cover for introduction into and removal from the housing with this cover. The hydrostatic transmission comprises an inclined-disk variable-displacement pump whose input shaft is connected to the drive shaft and a hydraulic pump of the drive-flange type hydraulically connected to the pump and having an output shaft which is, in turn, connected to the driven shaft.

Abstract: A reversible power transmission for transmitting input power supplied from either direction. The transmission comprises in combination a plurality of fluid power units for driving or receiving power from a first plurality of fluid actuators. The first plurality of fluid actuators are timed together for cooperating in a mutually complementary manner to substantially linearize a normally pulsating power transfer. The first plurality of actuators may be connected to additional actuators for providing or receiving rotary motion or to plungers operating within stuffing boxes for constant flow pumping or fluid power transfer.

Abstract: A wave motor is described comprising a float, a displaceable member coupled to the float so as to be displaced by the ascent and descent of the float, a pair of shafts, and a transmission including a pair of one-way clutches coupling the displaceable member to the shafts to rotate one in one direction during the ascent of the float and to rotate the other in the opposite direction during the descent of the float. In one described embodiment, the displaceable member is a wheel which is partially rotated in opposite directions by the ascent and descent of the float; and in a second described embodiment, the displaceable member is a rack which is moved upwardly by the ascent of the float and downwardly by its descent.

Abstract: A sealed tank normally receiving air under pressure is connected with respect to a shuttle valve so that when there is an accidental loss of pressure, the air in the tank moves the valve to a position where the high pressure in the tank is applied to an intensifier piston placing a brake or the like in operation. By using a three-way valve in the main supply line the brake may be cycled at will merely by an appropriate turn of the valve.

Abstract: A spring compensation mechanism for a swashplate drive having a variable swashplate angle, particularly suited for use with ahot gas engine. A compensating rod has one end connected for movement in one direction in response to tilting of the swashplate while the other end is connected to move in a perpendicular direction against the force of a spring.

Abstract: The present invention combines an exhaust gas turbine, a supercharger and an accessory drive for an internal combustion engine in an automotive vehicle to provide instantly available maximum power for full throttle acceleration along with the recovery of energy from the exhaust gas to drive the engine accessories at a substantially constant speed independent of the engine speed.

Abstract: A radial motor powered by pressurized gas is disclosed as used for starting the internal combustion engine of a portable implement such as a powered chain saw or lawn mower. The motor is designed for economical manufacture and assembly, durability, and economy of gas used. It includes pistons formed of stiff resilient material that in assembly are snapped onto the outer ends of connecting rods and held in place during operation of the motor without the use of retaining rings, pivot pins or screws. The inner ends of these connecting rods are held in sockets in connecting rod mounting means either by the shapes of the sockets or by the resilience of either or both of the connecting rod and mounting means. The motor includes a rotatable valve driven by a free end of the crankshaft to feed gas to the cylinders.

Abstract: An elongated arm, pivotally mounted at the center to a support structure, includes a large, bulbous reservoir attached at either end thereof. The arm is hollow and a passageway therethrough joins the two reservoirs. A volatile fluid which vaporizes at a relatively low temperature (125.degree. F. or less) is placed within the reservoir/passageway to provide the activating fluid for the device. A source of heat input is provided in heat exchange relationship with each reservoir when pivoted to its lowermost point, causing the volatile liquid to vaporize and flow to the other end where it condenses, causing the other end to lower. An electrical generator or other energy converter is operatively associated with and operated responsively to the movement of the arm.

Abstract: A support element for pipe ditches is provided which consists of support plates which are pressed against the ditch walls in pairs by longitudinally adjustable spreading means, and are guided and retained in vertical supports. The foot of at least one support plate includes a closable opening for guiding a branch pipe or the like, therethrough. Most desirably, the support plates are composed of two plates, an inner and an outer plate which are detachably coupled together and which have the same outer dimensions as a single support plate. The outer plate is provided with an opening in the area of the lower end thereof and the inner plate is movable between an open and closed position relative to the opening of the outer plate.

Abstract: A liquid storage reservoir of which the internal space defined by the body, and, the upper and the lower covers, has mounted therein a hollow post interconnecting these covers and having its internal space communicating with the internal space of the reservoir for escape of vapors of the liquid being stored, the open end of the post extending beyond the internal space of the reservoir. The upper and lower covers are hollow and communicate via conduits extending in the body along the generatrix thereof, the open end of the hollow post entering the internal space of one of said covers, the internal space of the other cover communicating with a vessel for collecting condensed vapors of the stored liquid. The disclosed reservoir is particularly suited for storing easily evaporating and volatile liquids, because it practically eliminates their evaporation losses.

Abstract: An energy conserving refrigerated display case having a control circuit that diverts electrical energy from the antisweat heaters operable during the refrigeration mode of the display, to an evaporator defrost heater during the defrost mode of the display.

Abstract: Apparatus is provided for automatically dispensing CO.sub.2 snow on articles moved by a conveyer underneath a snow storage container-dispenser outlet opening. The dispensing is controlled by a motor driven segmented drum with brush-like elastic blades closing the dispenser outlet opening actuated when an article is moved into place thereunder. The snow is generated from liquid CO.sub.2 flowing through cooling coils in the snow and dispensed through a nozzle in the upper portion of the container in response to capacity sensing means such as a photocell level detector to thereby keep the container snow level constant.