Abstract: A projectile release mechanism is disclosed for facilitating launching of a jet-propelled projectile in the form of a spherical spin-stabilized missile. The apparatus includes a projectile support means which includes a rotary portion having a register section for receiving a unitary nozzle member which is fixed to the missile, for securing the missile to the support means. A fusible joint is formed integral with the unitary nozzle member and is disposed for heating by high-temperature exhaust gas expelled by the missile to release the missile from the rotary portion of the support means. The fusible joint comprises a peripheral ring portion of the unitary nozzle member, which is of a reduced sectional thickness. A plurality of passages are formed through the reduced ring portion for conducting the exhaust gas through the fusible joint.

Abstract: A low pH solution and a method for conversion coating aluminum and aluminum alloy surfaces, as well as the coated surfaces themselves, utilizing zirconium, fluoride and nickel and, optionally, fluorophosphate.

Abstract: This is a molding apparatus designed to mold a plastic tub of circular transverse cross-section and re-entrant shape. Specifically, the tub tapers from its closed bottom to its opened top. The mold core is, therefore, collapsed radially to permit extraction of the plastic tub from the mold. This radial collapse is accomplished by forming the mold core of a central segment and a plurality of peripheral segments, and then axially extending the central segment while moving the peripheral segments along a radially inward path so that core collapse occurs. The exterior shape of the peripheral core segments defines a circular cross-sectional shape for the interior of the tub, despite the fact that the central core segment has the configuration of a hexagonal pyramid. Side mold segments which move radially outwardly and a tub extraction ram complete the equipment for extracting the tub from the mold.

Abstract: A repair construction and method are disclosed for repairing a damaged portion in the wall of a tire. A patch is installed over the damaged portion on the inside of the tire, and the inside of the tire is pressurized to force the patch into the damaged portion, preferably in a concave shape. The remainder of the plug area then is filled on the outside of the patch with a suitable plug material, and the plug material and patch are then cured while the patch is maintained in position at least partially within the damaged portion. This construction and repair method eliminates bulging on the exterior of the tire after the repair is completed.

Abstract: A device for holding a saw chain during sharpening of the chain cutters which prevents wobble by gripping both the cutter train and the drive train of the saw chain.

Abstract: An improved process for synthesizing high molecular weight polyamines utilizing a self-limiting neutralizing agent to maintain a generally constant alkaline ph over the course of the synthesis reaction, and the improved high molecular weight polyamines produced thereby.

Abstract: A filament wound pressure vessel is disclosed and has a spherical shape including a polar opening with a fitting disposed in the opening and protruding therefrom. A plurality of layers of filaments are wound about the polar fitting. Each layer comprises a sequence of polar winding patterns wound with incrementally increasing wind angles away from the polar fitting, creating voids at the junctures of adjacent patterns near the polar fitting and thus between sequential layers at said junctures. One or more annular fill doilies are installed in annular regions about the polar fitting to fill the voids between the layers at the junctures of adjacent winding patterns. The doilies are circular in configuration with a central opening for installation concentric with the polar opening.

Abstract: A spinner is disclosed for use with a model airplane, or the like, which has a propeller on a propeller shaft, the propeller being disposed between a thrust plate fixed to the propeller shaft and retaining means such as a propeller nut threaded onto the propeller shaft. A base plate has an axial passage for receiving the propeller shaft and the propeller nut holds the base plate between the thrust plate and the propeller for conjoint rotation therewith. An air piercing nose cone is releasably mounted to the base plate and has radial openings for receiving the shanks of the propeller blades. A locking ring is rotatably mounted on the base plate for rotation relative thereto about the axis of the propeller shaft between a locking position and a release position. The nose cone has at least one interior stud having a radial notch for engagement by a locking edge of the locking ring when in said locking position to releasably hold the nose cone on the base plate for conjoint rotation therewith.

Abstract: A liquid or gaseous impervious barrier is disclosed for use in composite structures, such as pressure vessels or the like, which include a juncture at which a first filament wound laminate meets a second member, such as a second laminate or a fixed boss or fitting. The juncture is capable of separating upon flexing of the first and second laminates or members. The barrier includes a flexible member disposed between the first and second laminates at the juncture thereof, with the barrier member being sealed, as by bonding, to the first and second laminates to prevent moisture penetration about the barrier member. The barrier member is split from the exterior thereof partially therethrough to accommodate any separation at the juncture due to flexing of the first and second laminates. A folded film sheet is disposed in the split in the barrier member to prevent the split portions thereof from adhering to each other.

Abstract: An automatically cancelling turn signal apparatus for a powered vehicle including left turn and right turn indicators. A switch selectively activates the indicators. A mechanism inactivates the indicators responsive to a predetermined increase in vehicle velocity over any base vehicle velocity attained after activating the switch.

Abstract: A compact, portable, clinical instrument dedicated to hemoglobin determination employs an L.E.D. light source with a peak output wavelength of about 553 nanometers and a yellow-blocking filter with a long wavelength cut-off not longer than about 565 nanometers. Thus, the relative amount of energy incident upon the blood sample in the 540 nm. hemoglobin absorption band is maximized. In addition to the L.E.D., the photodetector and the amplifying, inverting, log conversion, digital conversion, display and power supply regulation circuits are also exclusively solid-state. The display is of the reflective or liquid crystal type, and the power supply regulator is a sophisticated integrated circuit containing the equivalent of many discrete components. As a result, current consumption is minimized, and battery life and instrument accuracy are maximized. As an alternative illumination source, an infra-red L.E.D. can be employed, and the instrument is then capable of blood turbidity measurement.

Abstract: An electrically actuated locking mechanism is disclosed which employs a reciprocating lock bolt actuated by a solenoid in response to a momentary electrical signal. The lock bolt engages a latch means when extended to the locking position, and the latch means may be disengaged to unlock the device by either electrically or mechanically actuated release means.

Abstract: This is a desk top tray set comprising trays and connector-spacer members for connecting the trays in vertically stacked relationship two or more tiers high. Each tray has a versatility that makes it universally applicable either for individual use or for positioning anywhere in the vertical stack. That is to say, a given tray, when equipped with removeable and replaceable plugs for the upwardly facing bayonet ports thereof, can be used individually or as the topmost tray in a vertical stack. When the bayonet plugs are removed, however the tray can be used in the interior or at the bottom of the stack. Moreover the plugs, once removed can again be replaced, and the tray thus restored to the top of the stack or to individual use. The tray is also designed to receive connector bayonets plugged in from above or below, so that each tray can be used at the top, in the middle, or at the bottom of the stack.

Abstract: A position indicating valve is disclosed and includes a housing, a valve port through the housing, and a valve member mounted on the housing for movement toward and away from the valve port. An electrically conductive valve seat is disposed about the valve port, and an electrically conductive valve seal is disposed on the valve member for engagement with the valve seat. The electrically conductive valve seal and valve seat define engageable electrical contact means and circuit means is coupled thereto, whereby the circuit means is closed when the valve seat and valve seal are in contact with each other.

Abstract: A device is disclosed for individually flattening cylindrical containers, such as metal cans. A base is provided for supporting a can in a crushing position in which the can is disposed on its side on the base. A lever mechanism is pivotally attached to the base and is swingable upwardly therefrom to a raised position to permit a can to be positioned on its side on the base and downwardly toward the base for crushing the positioned can. The lever mechanism is jointed and includes a can engaging edge projecting from the joint whereby the edge is pivotable both about the pivot axis of the lever mechanism on the base and about the joint to effect crushing of one side of the can at one end thereof with the one end flattened over the crushed side. The partially flattened can then is turned over for similarly flattening the other side and other end thereof until the can is completely crushed into a flattened condition.

Abstract: A desensitizing solution and process for using the solution are disclosed to desensitize a diazo photosensitive printing plate after development. The solution comprises a water soluble desensitizing agent capable of reacting with any residual photosensitive diazo on the developed plate to render the diazo incapable of forming an oleophilic substance and a filming agent selected from water soluble aliphatic polyols have less than eight carbon units, the acid derived monoesters of these polyols, and the alkali metal salts of the monoesters.

Abstract: A method of and apparatus and system for determining temperature conditions within an environment is disclosed. The method includes utilization of one or more transducers disposed within the environment. One or more of the transducers are selectively scanned to either intermittently or continuously monitor signals generated at any location along the transducers. Additionally, the method includes selectively identifying one or more of the scanned transducers which generate signals of interest and converting such signals into a sense perception signal indicative of a temperature of interest. The apparatus and system includes utilization of one or more transducers disposed within the environment. It also includes scanning means operatively associated with at least one transducer for sensing signals generated at any location along the transducers and which is capable of identifying one or more scanned transducers which generate signals of interest.

Abstract: The invention relates to the recovering of free metal entrained in dross or skimmings obtained from melts of aluminum and aluminum based alloys wherein the dross zhas been partially prepared by prior art preparation processes. The invention is directed to the cleaning and preparation of the dross by the more effective removal of substantial portions of the oxide coatings on the dross. This results in the recovery of a significantly higher proportion of the free metal contained in the dross than is recovered using prior art cleaning and recovery processes. The dross, as partially processed by prior art methods, is sequentially fed through selected mechanical rolling and milling stages so as to separate aluminum oxide dust and aluminum concentrates from one another. The aluminum concentrates may be utilized in conventional furnace recovery methods to produce aluminum ingot or may be further processed through selected stages to produce high quality aluminum pellets.