Abstract: A conjoint facia, flashing and water dam for use as a roof deck appurtenance is provided and includes dam means, and facia and flashing means, together contributing means having normally upper longitudinal laterally entrant grooved structure and normally upper longitudinally laterally projecting tongue means which are engaged for stabilizing the facia and flashing means horizontally, while upward thrust for maintaining the facia and flashing means in an installed position is transmitted by flashing means reactively upon exerting pressure upon a roofing sheet on the dam means, with facia means of the facia and flashing means being anchored.

Abstract: A domical structure is provided in concert with, and as an embodiment of, a novel means for subdividing the spherical surface into spherical triangles which are appropriate as constructional elements. The method of subdivision permits a high degree of standardization in terms of limiting the number of different elements utilized and it results in element proportions and dimensions which allow the most efficient utilization of standard construction materials.

Abstract: A building structure is provided having a rectangular base frame, end wall panels sitting on the base frame along two opposite sides of the base frame, and roof-and-side panels resting on the other two sides of the base frame. The panels and sections are attached to one another by fasteners and coupling elements are used to attach at least some of the panels and sections to the base frame.

Abstract: A partition wall joint for joining three converging partition walls in a passenger vehicle. The joint includes a vertical anchor post generally hat-shaped in horizontal cross-section and a removable anchor plate generally coextensive and cooperative with the post so as to define three outwardly opening vertical channels wherein the respective partition walls may be secured as desired.

Abstract: A mobile home ceiling unit and a method for manufacturing said unit are disclosed. The mobile home ceiling unit comprises an arranged plurality of panels fastened to a roof frame. The roof frame has an outer truss member at opposite ends and a multiplicity of intermediate truss members therebetween. Intermediate truss members being rigidly affixed to the panels by means of back fasteners and adhesive material. The roof frame additionally provides perimeter side edge rails. The side edge rails and outer truss members are fastened to the panels by means of front face fasteners along the perimeter of the front face surface of the panel arrangement. The front face surface perimeter of the ceiling unit is adapted to supportively coact along support wall means. The ceiling unit provides a concealed back fastened ceiling structure having unitized construction. A method for making said unitized, ready-to-install, mobile home ceiling structure is also disclosed.

Abstract: A decorative skirting panel system for mobile homes and the like is formed with adjacent panels having a vertically slidable side edge interlock wherein a particular panel may be easily removed for replacement, repair, or access without detachment of adjacent panels. The panel is preferably formed of expanded polystyrene foam and is provided with an exterior surface simulating masonry such as brick, stone, tile or other such construction material. The side edge interlock is of a V-shaped tongue-and-groove construction. This configuration provides a minimum surface area for a given width and depth of tongue and groove, thereby reducing friction and facilitating the removal or insertion of a panel by vertical sliding movement. The V-shaped tongue and groove is especially well suited to this application since it is not prone to binding in the case of dimensional inhomogeneities and the like.

Abstract: A building panel has an expanded plastic core with thin reinforcing strips bonded to front and back surfaces of the core, at least along the edges thereof, and may have a wire grid attached in offset relation to one surface thereof for receiving a material such as concrete. The panel is manufactured by a process of expanding a plastic material in a mold by the application of heat to form a core, removing the core from the mold, placing thin reinforcing strips on front and back surfaces of the core with an adhesive system between strips and core, returning the core to the mold and heating the interior of the mold to bond the strips to the core and achieve dimensional stability during molding.

Abstract: A door light assembly in which a door light and interior and exterior molding members are secured in a door by an improved security clip. The clip is formed from a single piece of spring steel sheet metal and is adapted to be attached to the exterior molding member by means of a screw. Portions of the clip engage the adjacent edges of the door light and the door to hold the door light in place in the door, while other portions of the clip provide an attachment for the interior molding member. The resulting construction provides greater security since the exterior molding member is locked positively in place by means of screws, while at the same time the construction is aesthetically pleasing in that the screw heads are concealed.

Abstract: The invention comprises an improved construction member and a plate therefor wherein the construction member comprises an upper and a lower chord preferably interconnected by a web or strut and rigidly joined by a perpendicular spacer lock plate or plurality of plates or by a combination of a perpendicular rectangular spacer guide plate and opposing lock plates. The novel spacer lock plate adds considerable strength and stability to the construction member.

Abstract: Apparatus for packaging articles in a controlled atmosphere, such as one created by a vacuum followed by the addition of gas, such as carbon dioxide, provided within a flexible container having an open end. The packaging apparatus includes a frame and a support one the frame for the flexible container, which is preferably supported within a rigid outer container, to maintain a substantially fixed position for the articles in the flexible container. A fixed elongated member or manifold is mounted on the frame and includes an upwardly and forwardly angled sealing surface. The fixed elongated member cooperates with a movable elongated member or manifold which is operatively mounted on the frame and includes a sealing face which is movable into cooperative relationship with the sealing surface of the fixed manifold. The movable manifold is movable between a position which is spaced from the fixed manifold and a second position which is adjacent or against the sealing surface of the fixed manifold.

Abstract: The invention relates to a lowering and pivoting rail mechanism for a carton filling machine for guiding and loading blanks into transport containers, in which the lowering rail can be lowered more or less vertically to the vicinity of the floor of the transport container or to a previously loaded layer of blanks and in which the pivoting rail can be moved into a position above the layer of blanks to be loaded.

Abstract: An apparatus for folding and closing to top of folding cartons prefabricated from cut boxboard stock having an inner thermoplastic-resin liner includes a stepwise conveyor for conveying the folding cartons in a row, upright, with the fillet seam of the cartons perpendicular to the direction of travel, and a single folding, pressing and welding station having ultrasonic welding means including a vibratable tip and a folding, pressing and welding tool. The tool includes a pair of jaws and the tip, which are mounted for movement toward each other in the manner of tongs, wherein one of said jaws includes a folding wedge and an anvil above said folding wedge, and the other jaw is configured as a folding and clamping wedge. The jaws and holder are mounted on a common holder for movement into and out of engagement with the fillet seam of each container on the conveyor.

Abstract: A bag support and dispensing apparatus including a sleeve that is passed through aligned apertures in a stack of bags to support the bags. A collar at the back end of the sleeve is detachably engaged with a support member. The forward end of the sleeve has a flange that is dimensioned to readily pass through an enlarged aperture in the top portion of the front wall of a bag when the front wall of the bag is pulled in a forward direction. The flange is also dimensioned to resist passing through a smaller aperture in the top portion of the back wall of the bag to allow the bag to be held in an open position for receiving articles. A loaded bag is disengaged from the sleeve by pulling the bag in a forward direction with sufficient force to distend the smaller rear aperture so that the flange passes through the smaller aperture to release the back wall of the loaded bag.

Abstract: A method and apparatus for the automatic filling of plastic bags with, for example, elastic, soft and deformable contents. In order to provide for the automatic handling of empty bags without intermediate, especially manual, steps, the invention provides that the empty bags are attached by extending flaps to a plastic carrier web across a tear line. The apparatus of the invention places a quantity of goods into the bag by means of an axially moving filling piston which passes between spreadable jaws that hold the bag open. The continued motion of the filling piston eventually exerts a force sufficient to cause fracture along the tear line and separation of the filled bag from the flap which stays attached to the carrier web. The piston then moves the filled bag into position for sealing. A number of embodiments is presented.

Abstract: A heat-sealable foil is shaped around a shaping pipe to form a tube and during removal from the shaping pipe is provided with transverse seams by means of transverse heating jaws. The resulting bags are filled by means of a fill pipe and a dosaging worm or auger. A conduit leads from the lower end of the shaping pipe to a bellows and to a bottle of protective gas. The bellows forms a closed chamber whose volume is periodically increased and reduced in the operating rhythm of the bag forming apparatus by means of drive members. Thus the pressure conditions at the end of the shaping pipe can be influenced periodically, so as to avoid that the filled or sealed bags contain undesirable air inclusions or, when filling under protective gas, so as to avoid greater losses of protective gas from leaking into the open air.

Abstract: A cigarette packing machine of the type where a hollow packet or wrapper presenting an open head side and a closed bottom side is formed around a tubular mandrel or arbor, and a pushing plunger is provided for ejecting a group of cigarettes previously inserted at the interior of said arbor in the direction of the closed bottom side of the wrapper, further comprises a slip-off device for slipping the hollow wrapper off the arbor concurrently with the displacement of the cigarette group promoted by the pushing plunger. The slip-off device consists of a rotating friction roller arranged towards and away from said arbor, so as to cause the engagement of its peripheral friction surface with the wrapper formed on the arbor.

Abstract: Disclosed is a combination of a frame, a mount, and a boom, wherein the boom retains a workpiece, such as a mower, about its free end and is rotationally attached to a pivotal mount at its other end. The pivotal mount or rocker arm is attached to the frame and permits the boom and workpiece to be centered over the frame for transport. The entire assembly preferably is mounted on the back bed area of a truck or tractor.

Abstract: In a crop harvesting and threshing machine having an internal combustion engine operatively connected via an electrical circuit to a starter motor, a grain storage tank, an unloading auger movably mounted to an in material flow communication with the storage tank, a hydraulic cylinder operatively connected to the unloading auger to effect the movement of the unloading auger between a first inboard storage position and a second outboard unloading position, a control mechanism connected to the unloading auger between the first inboard position and the second outboard position and movable between first, second and third predetermined positions, the first predetermined position corresponding to the first inboard position and the second predetermined position corresponding to the second outboard position, there is provided a safety switch operatively connected to the electrical circuit and the hydraulic cylinder such that the control mechanism must be in the third predetermined position to permit the flow of elect

Abstract: A safety shield composed of an extruded sheet of material with upper, lower and intermediate tubular portions. The upper tubular portion is mounted on the rear axle of a lawn mower. Notches are provided in the sheet that extend from the upper tubular edge downwardly into the sheet and terminate above the intermediate tubular portion. The notches permit relative free fore-and-aft swinging of the entire shield on the axle without creating interference with portions of the mower housing. The intermediate and lower tubular portions have stiffener rods extending therethrough which restrict distortion of the shield and which may contact the lower extremities of the mower housing.

Abstract: A quickly detachable mounting link and its accompanying flail blades from sleeve lug mounts on a rotor drum. The link is U-shaped and has axially aligned oppositely disposed extensions at the upper end of the U. The depending portion of the U link is adapted to loosely carry the flail blades. One of the extensions is longer than the other and carries a coil spring therearound. The oppositely disposed extensions are adapted to slidably engage spaced apart, axially aligned sleeve lug mounts on the rotor drum. The coil spring in its normal extension keeps the mounting link in its sleeve mounts on the rotor drum. Quick detachment is accomplished by sliding the mounting link in a direction to compress the coil spring and effect removal of the short extension from its sleeve lug mount, whereupon the entire link may be removed from the rotor and the flail blades slid off the link over its short extension.

Abstract: A mechanical grape harvesting machine including two symmetrical supports arranged face to face and adapted to be disposed on either side of the same row of vines. Each support has one or more comb units carrying at least one flexible blade and pairs of flexible flaps adapted to be close to the vegetation which passes inside each support as the machine is moved. Receptacles or conveyers are placed at the bottom of the machine and ventilators are provided for creating an ascending air flow inside the almost tight enclosure defined by each support and its flaps.

Abstract: A method and apparatus for separating twisted wires, such as switching cables, has a rotatably driven central shaft to which a cable to be untwisted is co-rotatably mounted so that the cable ends are free. The cable is rotated inside of a stationary protective housing, having paddles movably mounted in the interior of the housing to momentarily engage the free cable ends as the cable rotates. The wire ends are thus diverted from the rotating plane at least twice per revolution, and are thereby stimulated to oscillate such that untwisting results. The angle of inclination of the paddles is selectively adjustable to adapt to cables of various numbers of twisted pairs and differing wire gauges.

Abstract: Apparatus for the open-end spinning or round-about spinning of a twisted thread from individual, discrete fibers using a known combination of paired rollers or drums, preferably air-permeable, perforated rollers or sieve drums cooperated with suction means within the rollers or drums to produce a line of thread formation extending longitudinally within the wedge-shaped nip formed by the rollers or drums, and further including a feed channel to supply individual fibers into the nip for twisting by the rollers or drums, and means to take off the twisted thread at one end of the nip. The apparatus is adjusted according to the invention to widen the nip in the plane of the thread forming line and in the direction of the thread take-off. Two equivalent adjustments of the nip lead to a spun thread of higher strength and better uniformity.

Abstract: The bottom wall of a cup-shaped rotor for a freed-fiber spinning device has a flat central portion surrounded by an inclined annular portion. The lateral wall of the cup has the shape of a cone frustum, the small diameter of which is located on the edge of the cup opening. Waste removal holes are formed in the annular portion of the bottom wall in the immediate vicinity of the lateral wall. Waste material is thus discharged to the exterior of the rotor under the action of centrifugal force.

Abstract: A reel clamp for a cradle assembly is disclosed. The reel clamp comprises two pintle assemblies mounted in axial alignment, one of such pintle assembly being axially movable with respect to the other. Each pintle assembly includes a bearing housing, a reel supporting member rotatably mounted in the bearing housing and means for securing the bearing housing to one of the side frame members of the cradle assembly. Cam means are associated with the movable pintle assembly for moving the bearing housing of such movable pintle assembly along the axis of the reel for clamping the reel between the two reel supporting members.

Abstract: A process and apparatus for producing a thread from staple fibers by the open-end or round-about spinning methods wherein the individual fibers are transported by an air stream to the thread forming zone in the nip between two air-permeable rollers with suction applied from within the rollers, characterized by the use of a fiber-transporting air stream directed at an angle of impingement with reference to the thread forming zone of less than 45.degree., preferably 10.degree. or even less, with a vector of movement of the air stream being counter to the thread draw-off direction. An improved thread or yarn product is obtained by this process, being more compact and free of loose fibers.

Abstract: A chain saddle assembly is disclosed which permits a chain used as a sling to be supported at any point between its opposite ends. The supported link is placed in a groove so that the link is lying sideways with one leg of the link above the other. Ledges are provided which engage the two links of the chain adajacent to the link which is being supported. The assembly thus prevents possible slipage of the chain through the assembly while providing proper support without imposing undo stress concentrations on the supported link or the links adjacent to it.

Abstract: The gas turbine engine includes a centrifugal fan having radial blades for receiving inlet air through inner entrance openings to spaces between adjacent blades. The air passes through outer exit openings from the spaces between the blades. Stationary inner and outer circumferential segments define closure members which successively eclipse the inner entrance and outer exit openings of the centrifugal fan blades when the fan rotates to position adjacent blades between the closure members. The closure members and space between the blades thus define closed combustion chambers. Fuel is injected and ignited so that continuous combustion takes place at constant volume, the exhaust gases escaping through the outer exit openings when rotation of the fan positions these openings beyond the outer closure members. This continuous combustion at constant volume provides for increased efficiency in the gas turbine engine over the Brayton cycle constant pressure type turbine engine.

Abstract: The steerable wheels of a hydraulically driven vehicle are provided with auxiliary motors which are connected in parallel both with each other and with the motor which powers the main drive wheels. A selector valve permits the motors for the steerable wheels to be optionally connected and disconnected from the reversible, variable displacement main pump. Flow dividers in the hydraulic lines limit the maximum flow of fluid to any one hydraulic motor. The auxiliary motors are of the variable displacement type, enabling them to be destroked to neutral when disconnected from the main pump. Destroking to neutral eliminates energy loss due to the pumping of large quantities of hydraulic fluid through a closed loop when the motors are driven by the wheels.

Abstract: A hydraulic fluid storage tank for an industrial vehicle. A small surge tank (44) is mounted on top of a main tank (10) and communicates with the main tank via a drain back hole (49) formed in the top of the main tank. A first breather tube (46), having one end opening within the surge tank, extends directly into the main tank. A second breather tube (48), having one end opening within the surge tank, enters the main tank through the drain back hole, extends along the top of the tank, and opens into the tank at a point substantially rearward of the first vent tube. If, due to movement of the vehicle, one of the breather tubes becomes filled with oil, the other will still function. Oil which momentarily floods one of the breather tubes enters the surge tank and drains back to the main tank via the drain back hole.

Abstract: An apparatus for producing electrical energy from multidirectional water wave action including a central support for placement on the bottom of a body of water with the support extending vertically above the surface of the water. A multiplicity of shafts extend radially and horizontally from the central support. A multiplicity of floats are supplied for each shaft with an elongated member connected at the upper end to each float and in engagement with a weight connected to the lower end of each elongated member and extending below the shaft. A one way clutch is mounted on each of said shafts and associated with each of said elongated members intermediate the ends thereof adapted to rotate each shaft in one direction when the float raises on a wave and not affect the shafts when said floats lower in a trough between waves. Each of said shafts is connected to electrical generating means for actuation of the same.

Abstract: A closed fluid working system for a Stirling engine is disclosed. The working system has a plurality of chambers subdivided by double-acting pistons operating therein; the subdivided chambers are respectively hot and cold and connected in series whereby a hot chamber is always in communication with a cold chamber of the next most adjacent cylinder. Parallel arranged gas flow paths are interposed in each communication between hot and cold chambers, and regenerator-cooler mechanisms are disposed in each of said parallel arranged paths. Control means are employed to permit flow through one or more of said parallel paths or flow of different levels through all of the paths, during different load conditions of the engine to permit the regenerator-cooling capacity to be tuned to the needs of the engine.

Abstract: A synchronizer is provided for synchronizing the movements of two hydraulic actuators. The synchronizer consists of a two-piston pump which supplies hydraulic fluid to both actuators. The two pistons are mechanically connected so as to move simultaneously through equal distances, and on each complete stroke of the pump, each actuator receives fluid from both cylinders of the pump, so that both actuators receive precisely equal amounts of fluid.

Abstract: The device comprises a master piston and cylinder assembly the piston of which is interconnected with the piston of an assisting jack by means of a connecting element on which is articulated the brake lever. The end of the brake lever remote from the brake pedal acts on a distributor adapted to feed the assisting jack with assisting hydraulic pressure so that when a force is applied to the brake pedal and thereby to the master piston via the connecting element, the distributor directs hydraulic fluid under pressure to the assisting jack, the piston of which then applies an assisting force to the connecting element.In the improvement of the invention, an abutment surface is provided for the brake lever located between the articulation point of the lever and its point of contact with the distributor so as to increase the mechanical advantage of the brake lever in the event of failure of the assisting hydraulic system.

Abstract: In a servo-motor assembly for a vehicle braking system a valve controlling the servo pressure is operated by an operating assembly including a rotary valve actuator positioned between a pedal-operated input member and an abutment member. The valve actuator is axially movable through a limited distance and a camming mechanism translates axial movement of the actuator into angular movement which operates the valve.

Abstract: An apparatus for holding the speed of an engine to a fixed level with provision for increasing engine speed above that setting without losing the set point. A combination of piston and cylinder assemblies are joined together to control engine speed. An equipment attendant pressurizes one end of a closed hydraulic system to activate a hydraulic operator to change engine speed. Shutting an isolation valve, hydraulically locks that speed setting into the engine. With the isolation valve shut, a biased, bypass piston and cylinder assembly is activated to increase engine speed. The bypass piston and cylinder assembly is actuated by the same device used by the equipment attendant to pressurize the hydraulic system control initially.

Abstract: A method of operating a vapor generating system for use in a power plant having a turbine control valve means, steam turbine and condenser connected in a main flow circuit in a series flow relationship, in which fluid is passed through a vapor generator furnace section at a predetermined flow rate and a firing rate is established in the furnace section to apply heat to the fluid while controlling the pressure of the fluid as it exits from the furnace section. The turbine control valve means are fixed at a predetermined percent open. The firing rate is increased to a predetermined percent of full load firing rate until the firing rate approximately corresponds to the percentage of full load flow rate of the fluid. The fluid flow rate is then increased together with the firing rate in a manner to increase the throttle pressure of the fluid to the turbine in proportion to load demand on the turbine until the load on the turbine reaches a predetermined percentage of full load.

Abstract: The disclosure is of a combustion chamber having prevaporizing pipes for the injection of fuel and shield cups intended to play the role of thermal barriers, upon which the hot jets issuing from the injectors are broken up. The shield cups have ribs toward which high velocity jets of air are directed, the jets of air issuing from small orifices. Other small orifices may addtionally open on a ridge of the ribs, so as to form supplementary jets of air convergent with the first set of jets of air.

Abstract: Apparatus and method for storing material at and below a permissible upper temperature below the freezing point in a refrigeration chamber containing a heat exchanger and a thermostat to activate a refrigeration to supply coolant to the heat exchanger to maintain a set temperature. Periodically defrosting the heat exchanger by introducing heat, usually by an electric heating element in the refrigeration chamber, but prior to initiating defrosting, the thermostat is taken out of control of the refrigeration unit and the latter automatically activated to effect a drop in temperature in the chamber sufficient to prevent the stored material from exceeding it permissible upper temperature during subsequent defrosting.

Abstract: Incoming cold water is delivered to a storage tank upstream from the customary domestic hot water heater. Waste heat recovery coils are located in the furnace flue and on the outlet of an air conditioning condenser unit. A system pump upstream from the water heater and between it and the storage tank circulates water from the storage tank through the two coils and back into the water inlet line leading to the water heater in a preheated state enabling the thermostatic setting of the water heater to be set at a significantly lower level than is customary.

Abstract: An air flow control assembly in a refrigerator having a freezer compartment on top and a fresh food compartment on the bottom separated by a partition and interconnected by an air duct located at the rear of the compartments. The air duct has an air inlet opening in the freezer compartment and an air outlet opening in the fresh food compartment. A movable damper opens and closes the air duct outlet opening and a storage pan is located in air flow communication with the air duct outlet opening. The storage pan has a stationary cover. There is a movable control mechanism located at the front of the storage pan, a push rod linkage member cooperating at one end with the damper to open and close the air duct outlet opening upon movement of the push rod linkage member and the other end is connected to the control mechanism for moving the push rod linkage member.

Abstract: A comestible freezer has a freezing barrel with a cold wall, an input end and an output end and a feeder therewithin having a ribbon auger flight helix and a stationary blending bar within the helix. A portion of the ribbon auger flight helix has an outward twist or skew diverging from a radial plane through the axis of the helix and outwardly toward the barrel wall whereby to exert a component of thrust on the comestible toward the cold wall. A portion of the ribbon also has an inward twist or skew diverging from the radial plane and inwardly toward the blending bar whereby to exert a component of thrust on the comestible toward the bar.

Abstract: An air conditioning unit including a compressor-expander employing a vaned rotor defining enclosed compartments which become smaller in the compressor and larger in the expander as the shaft rotates, for positive compression and expansion. A primary heat exchanger having an associated separator-sump is connected between the compressor outlet port and the expander inlet port for dissipation of heat. A secondary heat exchanger is connected between the expander outlet port and compressor inlet port for absorption of heat and to complete a closed loop. The loop is charged with a main refrigerant in the form of a non-condensing gas, such as air, plus an auxiliary refrigerant mixed with oil, the auxiliary refrigerant being chosen (a) to have appreciable heat of vaporization and (b) to be capable of liquifaction at the pressure and temperature existing in the primary heat exchanger and evaporation at the pressure and temperature existing in the secondary heat exchanger.

Abstract: In the specific embodiments of the invention disclosed, a semiconductor radiation detector located in a logging tool sized for passage through a borehole is maintained at cryogenic temperatures by a cryostat housed in the tool. The cryostat includes a cryogen chamber containing a melting-solid type cryogen. Thermal insulation in the form of radiation heat shields and a vacuum chamber surround the cryogen chamber. The integrity of the vacuum insulation is maintained by an active vacuum pump. The pump may be mounted either externally of the cryostat, such that its operation is independent of temperature conditions within the cryostat, or internally thereof, so as to be cooled by the cryogen. Alternatively, a second cryostat may be provided to cool the pump.

Abstract: An elastic shaft coupling, especially for motor vehicles, with two coupling parts each adapted to be connected with a shaft end, which are non-rotatably connected with each other under interposition of a rubber-elastic layer; one or both coupling parts are provided with approximately axially directed fastening tongues uniformly distributed at the circumference which are adapted to be screwed together with a correspondingly directed centering surface that is provided at the shaft itself or at a fastening flange adapted to be connected with the shaft.

Abstract: A changeable plug exposed shackle padlock comprising a padlock casing and a U-shaped shackle having legs with locking notches interfitting in sockets in the upper end of the casing. A key lock plug is removably received in a plug cavity in the casing and an elongated slideway cavity overlying the plug cavity extends through one end of the padlock casing outwardly adjacent the socket for the shorter leg and receives a reciprocative slidable cover member in its upper portion extending in covering relation over the plug cavity with a hole for the shorter shackle leg registering with the socket for that shackle leg when said slide member is in covering relation to the plug cavity. A slidable bolt plate member is guided for longitudinal sliding movement between locking and release positions in the lower portion of the slideway and has locking shoulders engageable in the locking notches of the shackle legs as is driven from the key lock plug.

Abstract: An improved bolt mechanism for use in a rotary lock has a fixed transverse pin and a spring biased movable transverse pin. The movable pin may be retracted within the body of the bolt under the action of a key inserted into the lock. The protrusion mechanism comprises a shaft inside the bolt a portion of which is conical. A conical member is likewise attached to the spring biased transverse pin cooperating with the conical member of the shaft thereby allowing the external end of the transverse pin to be moved flush with the external surface of the bolt or to extend transversely therefrom. When the movable pin extends transversely from the bolt, the bolt is retained between key plates in the lock. When the movable pin is retracted, the bolt may be moved longitudinally along its axis through the key plates to unlock the lock.

Abstract: An apparatus for roll-forming a blank ring into an annular product such as a seamless wheel rim. The apparatus includes an annular die rotatably supported in a die head, and a pressure roll rotatably supported in a roll head and movable toward and away from the annular die. The apparatus further includes a cylinder unit for moving the pressure roll radially of the annular die when the pressure roll is in the annular die, whereby the blank ring can be interposed between the pressure roll and the annular die. As the die is rotated, the blank ring is roll-formed between the roll and the die into an annular ring, which then is confined in the annular die and can be taken out when the die is disassembled into a plurality of segments. The product thus formed has a high degree of circularity and precision, and is free from distortions.

Abstract: An improved tapered wheel disc and method of making the same which includes the steps of spin-forming a radially outwardly-tapering concave disc from a section of blanked stock and piercing hand holes in the spun-tapered disc, the improvement comprising the step of placing the disc surface area around each hand hole in compression by embossing the disc from a direction internally of disc concavity to form a region surrounding each hand hole which is offset outwardly of disc concavity.

Abstract: A method and apparatus are provided for producing a cross-slotted die for forming cross-slotted screw heads. One end face of a cylindrical blank is turned to form a cone having a cone angle of between 124.degree. and 140.degree.. The cross shape is produced in this face by a single cold forming stage while preserving the outer diameter of the blank. The blank is held in a cylindrical holder having a bore with an internal diameter corresponding to the diameter of the cylindrical blank. An ejection mandrel engages in the bore to form the base of the holder. A platen carries a punch for insertion into the bore to deform the end face of the blank.