Abstract: A massive crane luffing jib is held and loaded under compression atop the main crane boom such as a hydraulically extensible and retractable telescopic boom whose sections may be locked for safety. The luffing jib is pivoted to an adapter atop the boom to enable swinging the jib to a stowed position close to and along the front side of the boom. First, second and third masts are pivotally attached to the jib base section. The second and third masts are connected by foldable tension links. An upper foldable ladder in the pendant line between the point of the jib and bridle assembly forms a hard connection between the first and second masts. A lower foldable ladder including a gooseneck forms a hard connection between the second and third masts following automatic coupling of the gooseneck with the third mast after the tension link becomes fully extended.

Abstract: Disclosed is a mixing and dispensing system including a tubular housing with an inlet opening for receiving a first liquid ingredient and a tubular casing for retaining a second liquid ingredient to be combined therewith. A piston is longitudinally movable in the tubular casing to force the second liquid through an outlet opening that liquid tightly engages the inlet opening of the tubular housing. Extending through an end of the tubular housing opposite to the inlet opening is a rod having an inner end secured to a seal mechanism for contacting the inlet to liquid tightly seal the inlet opening. The rod also extends through and is longitudinally movable within a passage in a plunger having an outer periphery conforming to the inner walls of the tubular housing. A coupling mechanism is operable to selectively secure the plunger to the rod so as to provide common longitudinal movement thereof.

Abstract: The base frame of a crawler truck for cranes or similar heavy equipment is provided on at least two opposite sides with projecting heavy attachment plates which coact with support structures projecting in an opposite direction from the side frames of self-contained crawler assemblies requiring attachment to the truck base frame. The side projecting structures of the crawler frames include permanent upper mounting pins and lower mounting openings. The upper pins rest within seating notches formed in the heavy attachment plates of the truck base frame and the lower mounting openings receive reciprocatory lower mounting and locking pins of the crawler assemblies, which pins are connected with power-actuators on the crawler assemblies. Safety latches prevent premature withdrawal of the lower pins from their mounting and locking positions. Awkward and tedious alignment problems are avoided.

Abstract: A fuel burner control system including a valve for controlling the flow of fuel to a burner, a resistive heater element for igniting fuel, a power supply for supplying current to the heater element, a flame sensing circuit comprising an ac source for supplying ac voltage to the heater element, and a detector for producing an output signal only in response to the flow through the heating element of current rectified by the flame, a valve control circuit for maintaining the valve open in response to the output signal, and a coupling circuit interconnecting the heating element with both the power supply and the sensing circuit and adapted to prevent the flow of current therebetween. By utilizing a coupling circuit that prevents the flow of current between the power supply and the flame sensing circuit, the resistive heater element can be efficiently and alternately used both as a fuel igniting mechanism and as an electrode for deriving current rectified by flame at the burner.

Abstract: A thermometer for temperature measurement of a body is provided wherein a temperature probe electrically connects to a temperature read-out means and a probe cover or sheath fits over such probe. The sheath has a temperature sensor e.g. a thermistor mounted thereon, which sensor is electrically connected to the probe when such probe is inserted into such sheath to provide a rapid measurement and read-out of the temperature of a body. The sheath with temperature sensor is disposable and readily replaced for the next use of the electric thermometer of the invention. Alternatively, the sheath can be sterilized for reuse.

Abstract: An electrical control system including a source of electrical power and an electrical load coupled together by a power switch having alternate circuit open and circuit closed conditions. A closure means activates the power switch to a circuit closed condition to produce power transmission between the source and the load in response to a closure signal produced by a condition responsive control circuit. Connected in series with the power switch is a protective switch also activated from a circuit open to a circuit closed condition in response to the closure signal. A sensing circuit produces a fault signal in response to a closed condition of the power switch and a simultaneous circuit open condition of the protective switch.

Abstract: A pneumatic system for banking consists of a pair of upright customer and teller terminals joined at right angles at their lower ends by a carrier transit tube. Each terminal includes a carrier elevator, a blower and a special ducting such that while only one blower propels the carrier from the sending to the receiving terminal both blowers are used to raise the elevator and carrier at the receiving terminal. Air valves at each terminal influence the movement of the carrier, and various controls initiate the sequence of operations by which the carrier is transferred between the terminals.

Abstract: A discharge valve adapted to be affixed to a container housing pressurized fire extinguishing materials. The discharge valve is opened by activating an explosive squib to provide a shock wave which destroys a diaphragm sealing the contents of the fire extinguishing fluid within the container or housing therefor. There are two explosive squibs, one of which may be electrically operated and the other of which may be manually operated.

Abstract: A multi-section hydraulically operated telescoping crane boom includes a manual fly section which may be safely extended and retracted, securely latched in the extended position and pin locked by remote operation of a biased hydraulically powered latching plunger and a biased cooperative hydraulically powered locking pin both embodied in a static pressure hydraulic circuit which includes a pressure-responsive indicator to indicate when the latching plunger is engaged. The circuit also includes safety interlocks for the cooperative latching plunger and locking pin preventing their operation in improper sequence.

Abstract: An electrical instrument including a housing with a faceplate, a component for providing a variable electrical characteristic and a control shaft having one end coupled to the component and rotatable to vary the electrical characteristics thereof and an opposite end extending through the faceplate. Attached to the opposite end of the shaft is a coupling that is shaped and arranged so as to prevent relative rotational movement therebetween while allowing relative axial movement therebetween during removal of the coupling from the shaft. A control knob is attached to the coupling in a manner that allows both relative axial and rotational movement therebetween which movement can be restrained by activation of a locking means. An indication of the relative angular position of the knob is provided by a scale located adjacent thereto on the faceplate.

Abstract: The present invention is directed to an improved locking mechanism for a money box assembly. The mechanism includes a fusible plastic cam which acts as a transmission member operatively connecting the lock to locking bolts. The bolts engage with the wall of a housing to which the money box assembly is mounted. The cam is formed of a material having a melting temperature substantially lower than the melting temperature of the material forming the lock. Any attempt to gain access to the money box by melting the lock and then operating the cam by a screwdriver or other tool will be frustrated since the drive cam linkage will have been destroyed or rendered inoperative by the heat thereby breaking the link between the lock and the locking bolts so that the money box assembly remains locked in place.

Abstract: To resist side deflection and buckling of the top and side plates in larger size multi-section telescopic crane booms, top plate lateral supports for the movable boom sections in the fully extended and fully retracted critical zones are provided to supplement the action of bottom lateral wear pads. The top plate lateral supports include adjustable spring bars on the sides and forward ends of the boom sections and coacting cam pads on the top plates of the boom sections at their forward ends and in the socketing zones when the boom sections are fully extended.

Abstract: A lock-down mechanism for use with an exit door wherein an electromagnet on the door attracts an armature on the push rail when the latter is pushed to unlatch the door, the door being held unlatched as long as the electromagnet is energized.

Abstract: A massive crane luffing jib is held and loaded under compression atop the main crane boom such as a hydraulically extensible and retractable telescopic boom whose sections may be locked for safety. The luffing jib is pivoted to an adapter atop the boom to enable swinging the jib to a stowed position close to and along the front side of the boom. First, second and third masts are pivotally attached to the jib base section. The second and third masts are connected by foldable tension links. An upper foldable ladder in the pendant line between the point of the jib and bridle assembly forms a hard connection between the first and second masts. A lower foldable ladder including a gooseneck forms a hard connection between the second and third masts following automatic coupling of the gooseneck with the third mast after the tension link becomes fully extended.

Abstract: An aircraft seat adapted to be releasably secured to a track member having a plurality of longitudinally spaced openings interconnected by slots in the top surface thereof and an internal channel communicating with these openings and slots, comprising a rear leg, a track fitting including lugs selectively sized and located for downward insertion into the track channel through selected track openings, a mounting pin for securing the track fitting to the rear leg, a plunger displaceable in a selected direction and selectively sized for mating insertion into a track opening, the plunger including a horizontally extending bore, a lever pivotally mounted on the mounting pin and having a medial bore, a shaft passing through the lever medial bore and the plunger horizontal bore interconnecting same, a spring clip including the shaft, a catch secured to the rear leg for retaining the spring clip at a selected orientation substantially perpendicular to the lever and for preventing upward displacement of the lever, the

Abstract: A vehicular toilet comprising a toilet bowl having an upper rim defining a bowl opening and a lower outlet, a flush valve for selectively controlling the application of a vacuum to the bowl outlet for flushing the toilet, a flush ring proximate the toilet bowl rim having apertures for directing liquid downwardly onto the surface of the bowl during flushing, means for increasing the cleaning effectiveness of the liquid as it flows downwardly over the toilet bowl during flushing including means for sealing the toilet bowl opening, a manifold having air inlet apertures and air outlet apertures communicating with the interior of the toilet bowl above the flush ring, and a baffle for directing the air pulled into the bowl from the air manifold during flushing downwardly over the liquid discharged from the flush ring.

Abstract: An aircraft seat comprising a pair of pivot pins, a pair of spaced seat back mounting brackets having apertures therein to permit the insertion of the pins therethrough, a pair of side frame forgings, each including a boss, each of the bosses including a peripheral clamping surface and an aperture therein for receiving one of the pins such that the pin and the boss surface have a common axis, a tray assembly including a pair of legs having bifurcated clamp ends for clamping over the peripheral clamping surfaces for selective pivotal motion relative thereto, whereby the tray assembly and the seat back brackets pivot about the common axis, the tray assembly can be removed without removing the seat back mounting brackets, and the seat back mounting brackets may be removed, by removing the pins, without removing the tray assembly.

Abstract: A handle for luggage cases and the like includes a grip molded from resilient, low durometer plastic and means for mounting the grip on a case and for supporting the weight of the case. The grip is formed with a cavity in a central portion thereof and has a plurality of resilient members within the cavity, the members adapted to be deformed when the handle is grasped to allow the central portion to flex to impart a soft feel to the grip. The handle may also include a shell assembled on the grip, and a clip having first projections adapted to enter an opening in the shell and a second projection adapted to be received in a slot in the grip, for holding the shell and the grip in assembled relationship.